Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Boise ID
520 PM MDT Fri Aug 21 2026
...GUSTY WINDS AND LOW RELATIVE HUMIDITIES ACROSS PORTIONS OF
SOUTHEAST OREGON DISTRICTS...
...SCATTERED THUNDERSTORMS WITH LIGHTNING EXPECTED ACROSS
PORTIONS OF SOUTHWEST IDAHO DISTRICTS...
Pre-frontal winds pick up on Saturday with afternoon wind gusts
up to 35 mph at the same time RHs are 10-15% across Oregon zones
670, 671 and 672. In addition, isolated thunderstorms are
possible over mountains early Saturday increasing in coverage
across portions of Southwest Idaho Saturday afternoon and
evening. Isolated thunderstorms possible across the Vale district
Saturday afternoon with frontal passage. Storms that do develop
will be fairly strong, capable of producing lightning, outflow
gusts up to 50 mph, and heavy rain.
IDZ401>403-421-424-426-222100-
/O.NEW.KBOI.FW.W.0019.260822T1800Z-260823T0600Z/
Western Payette National Forest-Eastern Payette National Forest-
Northern Boise National Forest-
Southern Boise/Western Sawtooth NF, including the Camas Prairie-
Western Twin Falls BLM-Southern Highlands-
520 PM MDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM NOON SATURDAY TO MIDNIGHT MDT
SATURDAY NIGHT FOR LIGHTNING FOR WESTERN PAYETTE NATIONAL
FOREST...EASTERN PAYETTE NATIONAL FOREST... NORTHERN BOISE
NATIONAL FOREST...SOUTHERN BOISE/WESTERN SAWTOOTH NF, INCLUDING
THE CAMAS PRAIRIE...WESTERN TWIN FALLS BLM AND SOUTHERN
HIGHLANDS...WHICH ARE FIRE WEATHER ZONES 401...402...
403...421...424 AND 426...
The National Weather Service in Boise has issued a Red Flag
Warning for lightning, which is in effect from noon Saturday to
midnight MDT Saturday night.
* AFFECTED AREA...In Idaho, Fire Weather Zones 401 Western
Payette National Forest, 402 Eastern Payette National Forest,
403 Northern Boise National Forest, 421 Southern Boise/Western
Sawtooth NF, including the Camas Prairie, 424 Western Twin
Falls BLM and 426 Southern Highlands.
* TIMING...From noon Saturday to midnight MDT Saturday night.
* THUNDERSTORMS...Scattered coverage with abundant lightning.
* OUTFLOW WINDS...Gusty erratic winds up to 50 mph.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will occur shortly.
&&
$$
W
URGENT - FIRE WEATHER MESSAGE
National Weather Service Boise ID
520 PM MDT Fri Aug 21 2026
...GUSTY WINDS AND LOW RELATIVE HUMIDITIES ACROSS PORTIONS OF
SOUTHEAST OREGON DISTRICTS...
...SCATTERED THUNDERSTORMS WITH LIGHTNING EXPECTED ACROSS
PORTIONS OF SOUTHWEST IDAHO DISTRICTS...
Pre-frontal winds pick up on Saturday with afternoon wind gusts
up to 35 mph at the same time RHs are 10-15% across Oregon zones
670, 671 and 672. In addition, isolated thunderstorms are
possible over mountains early Saturday increasing in coverage
across portions of Southwest Idaho Saturday afternoon and
evening. Isolated thunderstorms possible across the Vale district
Saturday afternoon with frontal passage. Storms that do develop
will be fairly strong, capable of producing lightning, outflow
gusts up to 50 mph, and heavy rain.
ORZ670>672-222100-
/O.NEW.KBOI.FW.W.0019.260822T1800Z-260823T0300Z/
Burns BLM-Steens Mountain-Southern Grasslands-
420 PM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM PDT SATURDAY FOR
WINDS AND LOW RELATIVE HUMIDITIES FOR BURNS BLM...STEENS MOUNTAIN
AND SOUTHERN GRASSLANDS...WHICH ARE FIRE WEATHER ZONES 670...
671 AND 672...
The National Weather Service in Boise has issued a Red Flag
Warning for winds and low relative humidities, which is in effect
from 11 AM to 8 PM PDT Saturday.
* AFFECTED AREA...In Oregon, Fire Weather Zones 670 Burns BLM,
671 Steens Mountain and 672 Southern Grasslands.
* TIMING...From 11 AM to 8 PM PDT Saturday.
* WINDS...Southwest 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...10 to 15 percent.
* TEMPERATURES...86 to 94 degrees.
* THUNDERSTORMS...Isolated coverage with lightning across 671 and
672.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will occur shortly.
&&
$$
W
URGENT - FIRE WEATHER MESSAGE
National Weather Service Seattle WA
102 PM PDT Fri Aug 21 2026
WAZ658-220415-
/O.UPG.KSEW.FW.A.0005.260822T1200Z-260823T0600Z/
/O.NEW.KSEW.FW.W.0006.260822T1200Z-260823T0300Z/
West Slopes of the North Cascades Generally above 1500 Feet-
102 PM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 5 AM TO 8 PM PDT SATURDAY FOR
LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONE 658...
The National Weather Service in Seattle has issued a Red Flag
Warning for lightning and gusty outflow winds, which is in effect
from 5 AM to 8 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
Cascades Generally above 1500 Feet.
* LIGHTNING...Scattered thunderstorm coverage is possible across
the North Cascades.
* OUTFLOW WINDS...Any storms that develop will be capable of
gusty and erratic outflow winds between 20 and 30 miles per
hour. Outflow winds can occur ahead of and behind storms and
cause erratic wind directions.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire`s
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either imminent or occurring now. Any fires that develop will
likely spread quickly. Outdoor burning is not recommended.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Seattle WA
102 PM PDT Fri Aug 21 2026
WAZ659-220415-
/O.NEW.KSEW.FW.W.0006.260822T0800Z-260823T0000Z/
West Slopes of the Central Cascades Generally above 1500 Feet-
102 PM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 1 AM TO 5 PM PDT SATURDAY FOR
LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONE 659...
The National Weather Service in Seattle has issued a Red Flag
Warning for lightning and gusty outflow winds, which is in effect
from 1 AM to 5 PM PDT Saturday.
* AFFECTED AREA...Fire Weather Zone 659 West Slopes of the Central
Cascades generally above 1500 Feet north of Gifford Pinchot
National Forest.
* LIGHTNING...Scattered thunderstorm coverage is possible across
the Central Cascades.
* OUTFLOW WINDS...Any storms that develop will be capable of
gusty and erratic outflow winds between 20 and 30 miles per
hour. Outflow winds can occur ahead of and behind storms and
cause erratic wind directions.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire`s
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either imminent or occurring now. Any fires that develop will
likely spread quickly. Outdoor burning is not recommended.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Seattle WA
102 PM PDT Fri Aug 21 2026
WAZ652-661-220415-
/O.UPG.KSEW.FW.A.0005.260822T0800Z-260823T0600Z/
/O.NEW.KSEW.FW.W.0006.260822T0800Z-260823T0000Z/
West Portion of the Olympic Mountains-
East Portion of the Olympic Mountains-
102 PM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 1 AM TO 5 PM PDT SATURDAY FOR
LIGHTNING AND GUSTY OUTFLOW WINDS FOR FIRE WEATHER ZONES 652 AND
661...
The National Weather Service in Seattle has issued a Red Flag
Warning for lightning and gusty outflow winds, which is in effect
from 1 AM to 5 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zone 652 West Portion of the
Olympic Mountains and Fire Weather Zone 661 East Portion of
the Olympic Mountains.
* LIGHTNING...Scattered thunderstorm coverage is possible across
the Olympics.
* OUTFLOW WINDS...Any storms that develop will be capable of
gusty and erratic outflow winds between 20 and 30 miles per
hour. Outflow winds can occur ahead of and behind storms and
cause erratic wind directions.
* IMPACTS...Scattered lightning in dry fuels can cause multiple
fire starts. Thunderstorms can also bring sudden sharp wind
shifts on existing fires, causing rapid changes in a fire`s
rate of spread and direction of spread. Thunderstorm outflow
winds can be a threat for several hours following the start of
a new lightning-caused fire. If a fire were to begin, air
quality may diminish in the surrounding area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either imminent or occurring now. Any fires that develop will
likely spread quickly. Outdoor burning is not recommended.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1157 AM PDT Fri Aug 21 2026
...WIDESPREAD BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY
SATURDAY...
...HIGH-BASED SHOWERS AND THUNDERSTORMS TONIGHT AND SATURDAY
ALONG THE WASHINGTON CASCADES AND BLUE MOUNTAINS...
.An approaching low-pressure system will bring widespread breezy
westerly winds through the Cascade gaps, across the Columbia
Basin, and into portions of the Blue Mountains Saturday. Coupled
with low relative humidity, this will lead to critical fire
weather conditions. Moreover, high-based showers and
thunderstorms are forecast, with the best chances of abundant
lightning overnight through Saturday morning along the Washington
Cascades and Saturday afternoon for the northeast Blue Mountains.
WAZ695-221400-
/O.UPG.KPDT.FW.A.0011.260822T0600Z-260823T0000Z/
/O.NEW.KPDT.FW.W.0020.260822T0600Z-260822T1900Z/
East Washington South Central Cascade Mountains-
1157 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 PM THIS EVENING TO NOON PDT
SATURDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE WA695...
The National Weather Service in Pendleton has issued a Red Flag
Warning for abundant lightning, which is in effect from 11 PM
this evening to noon PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zone 695 East Washington South
Central Cascade Mountains.
* TIMING...From 11 PM this evening to noon PDT Saturday.
* THUNDERSTORMS...Isolated to scattered coverage with abundant
lightning.
* OUTFLOW WINDS...Gusty, erratic winds up to 40 mph.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1157 AM PDT Fri Aug 21 2026
...WIDESPREAD BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY
SATURDAY...
...HIGH-BASED SHOWERS AND THUNDERSTORMS TONIGHT AND SATURDAY
ALONG THE WASHINGTON CASCADES AND BLUE MOUNTAINS...
.An approaching low-pressure system will bring widespread breezy
westerly winds through the Cascade gaps, across the Columbia
Basin, and into portions of the Blue Mountains Saturday. Coupled
with low relative humidity, this will lead to critical fire
weather conditions. Moreover, high-based showers and
thunderstorms are forecast, with the best chances of abundant
lightning overnight through Saturday morning along the Washington
Cascades and Saturday afternoon for the northeast Blue Mountains.
ORZ691-703-WAZ690-691-221400-
/O.UPG.KPDT.FW.A.0011.260822T1900Z-260823T0500Z/
/O.NEW.KPDT.FW.W.0020.260822T1900Z-260823T0500Z/
Lower Columbia Basin of Oregon-Warm Springs Reservation-
Kittitas Valley-Lower Columbia Basin of Washington-
1157 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 10 PM PDT SATURDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES OR691,
OR703, WA690, AND WA691...
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 10 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 691
Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of
Washington and 703 Warm Springs Reservation.
* TIMING...From noon to 10 PM PDT Saturday.
* WINDS...West 15 to 25 mph with gusts of 25 to 40 mph.
* RELATIVE HUMIDITY...15 to 25 percent in the afternoon.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1157 AM PDT Fri Aug 21 2026
...WIDESPREAD BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY
SATURDAY...
...HIGH-BASED SHOWERS AND THUNDERSTORMS TONIGHT AND SATURDAY
ALONG THE WASHINGTON CASCADES AND BLUE MOUNTAINS...
.An approaching low-pressure system will bring widespread breezy
westerly winds through the Cascade gaps, across the Columbia
Basin, and into portions of the Blue Mountains Saturday. Coupled
with low relative humidity, this will lead to critical fire
weather conditions. Moreover, high-based showers and
thunderstorms are forecast, with the best chances of abundant
lightning overnight through Saturday morning along the Washington
Cascades and Saturday afternoon for the northeast Blue Mountains.
ORZ696-698-700-221400-
/O.UPG.KPDT.FW.A.0011.260822T1900Z-260823T0500Z/
/O.NEW.KPDT.FW.W.0020.260822T1900Z-260823T0500Z/
John Day Valley-Southern Blue Mountains-
Central Mountains of Oregon-
1157 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 10 PM PDT SATURDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES OR696,
OR698, AND OR700...
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 10 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* AFFECTED AREA...Fire Weather Zones 696 John Day Valley, 698
Southern Blue Mountains and 700 Central Mountains of Oregon.
* TIMING...From noon to 10 PM PDT Saturday.
* WINDS...West 10 to 20 mph with gusts of 25 to 35 mph.
* RELATIVE HUMIDITY...10 to 20 percent in the afternoon.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1157 AM PDT Fri Aug 21 2026
...WIDESPREAD BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY
SATURDAY...
...HIGH-BASED SHOWERS AND THUNDERSTORMS TONIGHT AND SATURDAY
ALONG THE WASHINGTON CASCADES AND BLUE MOUNTAINS...
.An approaching low-pressure system will bring widespread breezy
westerly winds through the Cascade gaps, across the Columbia
Basin, and into portions of the Blue Mountains Saturday. Coupled
with low relative humidity, this will lead to critical fire
weather conditions. Moreover, high-based showers and
thunderstorms are forecast, with the best chances of abundant
lightning overnight through Saturday morning along the Washington
Cascades and Saturday afternoon for the northeast Blue Mountains.
ORZ693-WAZ693-221400-
/O.NEW.KPDT.FW.W.0020.260822T1700Z-260823T0300Z/
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
1157 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM PDT SATURDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES OR693 AND
WA693...
The National Weather Service in Pendleton has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from 10 AM to 8 PM PDT Saturday.
* AFFECTED AREA...Fire Weather Zones 693 Canyon Grasslands of
Wallowa County and 693 Southeast Washington Grande Ronde
Valley.
* TIMING...From 10 AM to 8 PM PDT Saturday.
* WINDS...Southwest 10 to 20 mph with gusts of 20 to 30 mph,
shifting to the northwest 10 to 20 mph with gusts of 20 to 30
mph late afternoon and evening.
* RELATIVE HUMIDITY...10 to 20 percent late morning and afternoon.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
1157 AM PDT Fri Aug 21 2026
...WIDESPREAD BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY
SATURDAY...
...HIGH-BASED SHOWERS AND THUNDERSTORMS TONIGHT AND SATURDAY
ALONG THE WASHINGTON CASCADES AND BLUE MOUNTAINS...
.An approaching low-pressure system will bring widespread breezy
westerly winds through the Cascade gaps, across the Columbia
Basin, and into portions of the Blue Mountains Saturday. Coupled
with low relative humidity, this will lead to critical fire
weather conditions. Moreover, high-based showers and
thunderstorms are forecast, with the best chances of abundant
lightning overnight through Saturday morning along the Washington
Cascades and Saturday afternoon for the northeast Blue Mountains.
ORZ692-WAZ692-221400-
/O.NEW.KPDT.FW.W.0020.260822T1800Z-260823T0600Z/
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
1157 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 11 PM PDT SATURDAY
FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR692 AND WA692...
The National Weather Service in Pendleton has issued a Red Flag
Warning for abundant lightning, which is in effect from 11 AM to
11 PM PDT Saturday.
* AFFECTED AREA...Fire Weather Zones 692 Northern Blue Mountains
of Oregon and 692 Blue Mountains of Washington.
* TIMING...From 11 AM to 11 PM PDT Saturday.
* THUNDERSTORMS...Isolated to scattered coverage with abundant
lightning.
* OUTFLOW WINDS...Gusty, erratic winds of 40 to 60 mph.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Pocatello ID
1241 PM MDT Fri Aug 21 2026
...CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED ON SATURDAY DUE
TO SCATTERED THUNDERSTORM ACTIVITY ACROSS MUCH OF EASTERN
IDAHO...
IDZ410-422-425-427-475-476-221200-
/O.NEW.KPIH.FW.W.0022.260822T1800Z-260823T0300Z/
Upper Snake River Valley/Idaho Falls BLM-
Sawtooth Range/Northern Sawtooth NF-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
East Salmon River Mountains/Salmon NF-
Lemhi and Lost River Range/Challis NF-
1241 PM MDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SATURDAY FOR
SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 422, 425,
427, 475, AND 476...
The National Weather Service in Pocatello has issued a Red Flag
Warning for scattered thunderstorms, which is in effect from noon
to 9 PM MDT Saturday.
* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River
Valley/Idaho Falls BLM, Fire Weather Zone 422 Sawtooth
Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake
River Valley/Twin Falls BLM north of the Snake River, Fire
Weather Zone 427 Goose Creek and Raft River Valley/Southern
Sawtooth NF/Twin Falls BLM south of the Snake River, Fire
Weather Zone 475 East Salmon River Mountains/Salmon NF and
Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF.
* IMPACTS...Frequent lightning will increase risk of new fire
starts.
* THUNDERSTORMS...Scattered coverage with frequent lightning.
* OUTFLOW WINDS...Gusty and erratic winds to 60 mph.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly based on these criteria
for Southeastern Idaho:
- Relative humidity at or below 15 percent and wind gusts of at
least 25 mph in the mountains, or 30 mph in the Snake Plain.
- Thunderstorm coverage of 25 percent, without specific rainfall
criteria.
- Other high impact events deemed critical by the National
Weather Service and area fire management agencies.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Spokane WA
1055 AM PDT Fri Aug 21 2026
...THUNDERSTORMS, GUSTY WINDS, AND LOW RELATIVE HUMIDITY SATURDAY
INTO SUNDAY...
.A strong cold front will move through the region Saturday into
Sunday, bringing a risk for thunderstorms and strong west to
southwest winds. This will lead to critical fire weather
conditions across the region.
WAZ701-702-705>709-221000-
/O.UPG.KOTX.FW.A.0012.260822T1900Z-260823T0500Z/
/O.NEW.KOTX.FW.W.0022.260822T1900Z-260823T0500Z/
Foothills of Northeast Washington (Zone 701)-
Colville Reservation (Zone 702)-
Foothills of Central Washington Cascades (Zone 705)-
Waterville Plateau (Zone 706)-Western Columbia Basin (Zone 707)-
Eastern Columbia Basin - Palouse - Spokane Area (Zone 708)-
Lower Palouse - Snake River (Zone 709)-
1055 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 10 PM PDT SATURDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 701, 702,
705, 706, 707, 708, AND 709...
The National Weather Service in Spokane has issued a Red Flag
Warning for wind and low relative humidity, which is in effect
from noon to 10 PM PDT Saturday. The Fire Weather Watch is no
longer in effect.
* Affected Area: Foothills of Northeast Washington (Zone 701),
Colville Reservation (Zone 702), Foothills of Central
Washington Cascades (Zone 705), Waterville Plateau (Zone 706),
Western Columbia Basin (Zone 707), Eastern Columbia Basin -
Palouse -Spokane Area (Zone 708) and Lower Palouse -Snake
River (Zone 709).
* Winds: West/Southwest 15 to 25 mph with gusts up to 40 mph.
* Relative Humidities: 17 to 25 percent.
* Impacts: Rapid fire spread is possible with any new or ongoing
fires.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Spokane WA
1055 AM PDT Fri Aug 21 2026
...THUNDERSTORMS, GUSTY WINDS, AND LOW RELATIVE HUMIDITY SATURDAY
INTO SUNDAY...
.A strong cold front will move through the region Saturday into
Sunday, bringing a risk for thunderstorms and strong west to
southwest winds. This will lead to critical fire weather
conditions across the region.
WAZ700-221000-
/O.NEW.KOTX.FW.W.0022.260822T2300Z-260823T1800Z/
Selkirk Mountains of Northeast Washington (Zone 700)-
1055 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 4 PM SATURDAY TO 11 AM PDT
SUNDAY FOR THUNDERSTORMS FOR FIRE WEATHER ZONE 700...
The National Weather Service in Spokane has issued a Red Flag
Warning for thunderstorms, which is in effect from 4 PM Saturday
to 11 AM PDT Sunday.
* Affected Area: Selkirk Mountains of Northeast Washington (Zone
700).
* Affected Area: Northern and Central Idaho Panhandle (Zone 101).
* Thunderstorms: Scattered showers and thunderstorms Saturday
afternoon through Sunday morning.
* Outflow Winds: Gusty outflow winds up to 50 mph.
* Impacts: Lightning strikes will have the potential to start new
fires, and gusty and erratic outflow winds could cause rapid
spread of new and existing wildfires.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Spokane WA
1055 AM PDT Fri Aug 21 2026
...THUNDERSTORMS, GUSTY WINDS, AND LOW RELATIVE HUMIDITY SATURDAY
INTO SUNDAY...
.A strong cold front will move through the region Saturday into
Sunday, bringing a risk for thunderstorms and strong west to
southwest winds. This will lead to critical fire weather
conditions across the region.
IDZ101-221000-
/O.UPG.KOTX.FW.A.0012.260822T2300Z-260823T1800Z/
/O.NEW.KOTX.FW.W.0022.260822T2300Z-260823T1800Z/
Northern and Central Idaho Panhandle (Zone 101)-
1055 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 4 PM SATURDAY TO 11 AM PDT
SUNDAY FOR THUNDERSTORMS FOR FIRE WEATHER ZONE 101...
The National Weather Service in Spokane has issued a Red Flag
Warning for thunderstorms, which is in effect from 4 PM Saturday
to 11 AM PDT Sunday. The Fire Weather Watch is no longer in
effect.
* Affected Area: Northern and Central Idaho Panhandle (Zone 101).
* Thunderstorms: Scattered showers and thunderstorms Saturday
afternoon through Sunday morning.
* Outflow Winds: Gusty outflow winds up to 50 mph.
* Impacts: Lightning strikes will have the potential to start new
fires, and gusty and erratic outflow winds could cause rapid
spread of new and existing wildfires.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Spokane WA
1055 AM PDT Fri Aug 21 2026
...THUNDERSTORMS, GUSTY WINDS, AND LOW RELATIVE HUMIDITY SATURDAY
INTO SUNDAY...
.A strong cold front will move through the region Saturday into
Sunday, bringing a risk for thunderstorms and strong west to
southwest winds. This will lead to critical fire weather
conditions across the region.
WAZ696>699-704-221000-
/O.UPG.KOTX.FW.A.0012.260822T1800Z-260823T1500Z/
/O.NEW.KOTX.FW.W.0022.260822T1800Z-260823T1500Z/
East Washington Central Cascades (Zone 696)-
East Portion of North Cascades National Park/Lake Chelan National
Recreation Area (Zone 697)-
East Washington North Cascades (Zone 698)-
Okanogan Highlands and Kettle Mountains (Zone 699)-
Methow Valley (Zone 704)-
1055 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 8 AM PDT
SUNDAY FOR THUNDERSTORMS FOR FIRE WEATHER ZONES 696, 697, 698,
699, AND 704...
The National Weather Service in Spokane has issued a Red Flag
Warning for thunderstorms, which is in effect from 11 AM Saturday
to 8 AM PDT Sunday. The Fire Weather Watch is no longer in
effect.
* Affected Area: East Washington Central Cascades (Zone 696),
East Portion of North Cascades National Park/Lake Chelan
National Recreation Area (Zone 697), East Washington North
Cascades (Zone 698), Okanogan Highlands and Kettle Mountains
(Zone 699) and Methow Valley (Zone 704).
* Thunderstorms: Scattered showers and thunderstorms Saturday
through Sunday morning.
* Outflow Winds: Gusty outflow winds up to 40 mph.
* Impacts: Lightning strikes will have the potential to start new
fires, and gusty and erratic outflow winds could cause rapid
spread of new and existing wildfires.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Spokane WA
1055 AM PDT Fri Aug 21 2026
...THUNDERSTORMS, GUSTY WINDS, AND LOW RELATIVE HUMIDITY SATURDAY
INTO SUNDAY...
.A strong cold front will move through the region Saturday into
Sunday, bringing a risk for thunderstorms and strong west to
southwest winds. This will lead to critical fire weather
conditions across the region.
WAZ703-221000-
/O.UPG.KOTX.FW.A.0012.260822T1800Z-260823T1500Z/
/O.NEW.KOTX.FW.W.0022.260822T1800Z-260823T1500Z/
Okanogan Valley (Zone 703)-
1055 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 8 AM PDT
SUNDAY FOR THUNDERSTORMS, WIND, AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONE 703...
The National Weather Service in Spokane has issued a Red Flag
Warning for thunderstorms, wind, and low relative humidity, which
is in effect from 11 AM Saturday to 8 AM PDT Sunday. The Fire
Weather Watch is no longer in effect.
* Affected Area: Okanogan Valley (Zone 703).
* Thunderstorms: Scattered showers and thunderstorms Saturday
afternoon through Sunday morning.
* Timing of Thunderstorms: Best chances for thunderstorms are
from 11 AM Saturday morning through 8 AM Sunday morning.
* Outflow Winds: Gusty outflow winds up to 50 mph.
* Impacts: Lightning strikes will have the potential to start new
fires, and gusty and erratic outflow winds could cause rapid
spread of new and existing wildfires.
* General Winds: South winds 15 to 20 mph with gusts up to 40
mph.
* Timing of General Winds: Peak general winds will be seen from
noon to 10 PM Saturday.
* Relative Humidities: 20 to 25 percent.
* Impacts: Rapid fire spread is possible with any new or ongoing
fires.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
930 AM PDT Fri Aug 21 2026
ORZ625-220430-
/O.UPG.KMFR.FW.A.0009.260822T2100Z-260823T0400Z/
/O.NEW.KMFR.FW.W.0018.260822T2100Z-260823T0400Z/
South Central Oregon Desert including the BLM Land in Eastern
Lake and Western Harney Counties-
930 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT SATURDAY FOR
STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 625...
* IMPACTS...Gusty winds combined with low RH could lead to the
rapid spread of any new or existing fires.
* AFFECTED AREA...In Oregon...Fire weather zone 625, including
the high desert of Lake County and the Hart Mountain Antelope
Refuge.
* WIND...South to southwest 15 to 25 mph with with gusts 30 to
35 mph.
* HUMIDITY...Minimum humidity 10 to 15 percent.
* DETAILED URL...View the hazard area in detail at
https://weather.gov/wrh/hazards?wfo=mfr
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Follow all fire restrictions. You can find your county`s
emergency sign up form as well as links to fire restrictions at
weather.gov/medford/wildfire. One less spark, one less wildfire.
Be sure you`re signed up for your county`s emergency alert
system. Familiarize yourself with your emergency plan and make
sure you listen to emergency services. Visit ready.gov/plan for
more information.
A Red Flag Warning is issued when we identify weather conditions
that promote rapid spread of fire which may become life-
threatening. This does not mean there is a fire. These conditions
are either occurring now or will begin soon. It is important to
have multiple ways to receive information from authorities.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
930 AM PDT Fri Aug 21 2026
ORZ624-220430-
/O.UPG.KMFR.FW.A.0009.260822T2100Z-260823T0400Z/
/O.NEW.KMFR.FW.W.0018.260822T2100Z-260823T0400Z/
/O.CON.KMFR.FW.W.0017.260821T2100Z-260822T0400Z/
Klamath Basin and the Fremont-Winema National Forest-
930 AM PDT Fri Aug 21 2026
...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
9 PM PDT THIS EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE
WEATHER ZONE 624...
...RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT SATURDAY FOR
STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONE 624...
* IMPACTS...Gusty winds combined with low RH could lead to the
rapid spread of any new or existing fires.
* AFFECTED AREA...In Oregon, Fire weather zone 624, including the
Wrights Spring Fire and the Fremont-Winema National Forest.
* WIND...South to southwest 15 to 20 mph with gusts up to 30
mph.
* HUMIDITY...Minimum humidity around 12 to 18 percent.
* DETAILED URL...View the hazard area in detail at
https://weather.gov/wrh/hazards?wfo=mfr
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Follow all fire restrictions. You can find your county`s
emergency sign up form as well as links to fire restrictions at
weather.gov/medford/wildfire. One less spark, one less wildfire.
Be sure you`re signed up for your county`s emergency alert
system. Familiarize yourself with your emergency plan and make
sure you listen to emergency services. Visit ready.gov/plan for
more information.
A Red Flag Warning is issued when we identify weather conditions
that promote rapid spread of fire which may become life-
threatening. This does not mean there is a fire. These conditions
are either occurring now or will begin soon. It is important to
have multiple ways to receive information from authorities.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
930 AM PDT Fri Aug 21 2026
CAZ281-220400-
/O.CON.KMFR.FW.W.0017.260821T2100Z-260822T0400Z/
Central Siskiyou County Including Shasta Valley-
930 AM PDT Fri Aug 21 2026
...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
9 PM PDT THIS EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE
WEATHER ZONE 281...
* IMPACTS...Gusty winds combined with low RH could lead to the
rapid spread of any new or existing fires.
* AFFECTED AREA...In California...Fire weather zone 281,
including the Shasta Valley.
* WIND...South to southwest 15 to 25 mph with gusts up to 30
mph.
* HUMIDITY...Minimum humidity 12 to 17 percent.
* DETAILED URL...View the hazard area in detail at
https://weather.gov/wrh/hazards?wfo=mfr
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Follow all fire restrictions. You can find your county`s
emergency sign up form as well as links to fire restrictions at
weather.gov/medford/wildfire. One less spark, one less wildfire.
Be sure you`re signed up for your county`s emergency alert
system. Familiarize yourself with your emergency plan and make
sure you listen to emergency services. Visit ready.gov/plan for
more information.
A Red Flag Warning is issued when we identify weather conditions
that promote rapid spread of fire which may become life-
threatening. This does not mean there is a fire. These conditions
are either occurring now or will begin soon. It is important to
have multiple ways to receive information from authorities.
&&
$$
Visit us at www.weather.gov/Medford
URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
930 AM PDT Fri Aug 21 2026
CAZ284-285-220430-
/O.UPG.KMFR.FW.A.0009.260822T2100Z-260823T0400Z/
/O.NEW.KMFR.FW.W.0018.260822T2100Z-260823T0400Z/
/O.CON.KMFR.FW.W.0017.260821T2100Z-260822T0400Z/
Siskiyou County from the Cascade Mountains East and South to Mt
Shasta-Modoc County Except for the Surprise Valley-
930 AM PDT Fri Aug 21 2026
...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
9 PM PDT THIS EVENING FOR STRONG GUSTY WIND AND LOW RH FOR FIRE
WEATHER ZONES 284 AND 285...
...RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM PDT SATURDAY FOR
STRONG GUSTY WIND AND LOW RH FOR FIRE WEATHER ZONES 284 AND 285...
* IMPACTS...Gusty winds combined with low RH could lead to the
rapid spread of any new or existing fires.
* AFFECTED AREA...In California...Fire weather zones 284 and
285, including the Modoc National Forest.
* WIND...South to southwest 15 to 20 mph with gusts 25 to 30
mph.
* HUMIDITY...Minimum humidity 10 to 17 percent.
* DETAILED URL...View the hazard area in detail at
https://weather.gov/wrh/hazards?wfo=mfr
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Follow all fire restrictions. You can find your county`s
emergency sign up form as well as links to fire restrictions at
weather.gov/medford/wildfire. One less spark, one less wildfire.
Be sure you`re signed up for your county`s emergency alert
system. Familiarize yourself with your emergency plan and make
sure you listen to emergency services. Visit ready.gov/plan for
more information.
A Red Flag Warning is issued when we identify weather conditions
that promote rapid spread of fire which may become life-
threatening. This does not mean there is a fire. These conditions
are either occurring now or will begin soon. It is important to
have multiple ways to receive information from authorities.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
737 AM PDT Fri Aug 21 2026
CAZ270-278-NVZ458-221445-
/O.UPG.KREV.FW.A.0008.260822T1800Z-260823T0600Z/
/O.NEW.KREV.FW.W.0009.260822T1800Z-260823T0600Z/
Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
737 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 11 PM PDT SATURDAY
FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTHEASTERN CALIFORNIA AND
FAR NORTHEASTERN NEVADA...
The National Weather Service in Reno has issued a Red Flag
Warning for gusty winds and low humidity, which is in effect from
11 AM to 11 PM PDT Saturday. The Fire Weather Watch is no longer
in effect.
* CHANGES...Upgraded the Fire Weather Watch to a Red Flag Warning.
* Affected Area...Fire Weather Zone 270 Surprise Valley
California, Fire Weather Zone 278 Eastern Lassen County, Fire
Weather Zone 458 Northern Washoe County.
* Winds...Southwest 15 to 25 mph with gusts up to 40 mph.
* Humidity...As low as 12 percent.
* Duration...3 to 6 hours.
* Impacts...The combination of gusty winds and low humidity can
cause fire to rapidly grow in size and intensity before first
responders can contain them.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Avoid outdoor activities that can cause a spark near dry
vegetation, such as yard work, target shooting, or campfires.
Follow local fire restrictions. Check weather.gov/reno for
updates and livingwithfire.info for preparedness tips.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Reno NV
737 AM PDT Fri Aug 21 2026
NVZ420-221445-
/O.NEW.KREV.FW.W.0009.260822T1800Z-260823T0600Z/
Northern Sierra Front including Carson City, Douglas, Storey,
Southern Washoe, Western Lyon, and Far Southern Lassen Counties-
737 AM PDT Fri Aug 21 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 11 PM PDT SATURDAY
FOR GUSTY WINDS AND LOW HUMIDITY FOR THE NORTHERN SIERRA FRONT...
The National Weather Service in Reno has issued a Red Flag Warning
for gusty winds and low humidity, which is in effect from 11 AM
to 11 PM PDT Saturday.
* Affected Area...Fire Weather Zone 420 Northern Sierra Front
including Carson City, Douglas, Storey, Southern Washoe,
Western Lyon, and Far Southern Lassen Counties.
* Winds...Southwest 15 to 25 mph with gusts up to 40 mph.
* Humidity...As low as 18 percent.
* Duration...3 to 6 hours.
* Impacts...The combination of gusty winds and low humidity can
cause fire to rapidly grow in size and intensity before first
responders can contain them.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Avoid outdoor activities that can cause a spark near dry
vegetation, such as yard work, target shooting, or campfires.
Follow local fire restrictions. Check weather.gov/reno for
updates and livingwithfire.info for preparedness tips.
&&
$$
http://weather.gov/reno
