Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
411 AM MDT Tue May 18 2021
UTZ495-497-498-182200-
/O.CON.KSLC.FW.W.0009.210519T1700Z-210521T0300Z/
/O.CON.KSLC.FW.A.0006.210521T1500Z-210522T0300Z/
Color Country West Desert-Mojave Desert-Grand Staircase-
411 AM MDT Tue May 18 2021
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM WEDNESDAY TO
9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 495, 497, AND 498...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 495, 497, AND 498...
* AFFECTED AREA...Fire Weather Zone 495 Color Country West
Desert, Fire Weather Zone 497 Mojave Desert and Fire Weather
Zone 498 Grand Staircase.
* TIMING...Winds will be the strongest from noon until early
evening Wednesday and Thursday with winds relaxing during the
nighttime hours. Expect stronger winds on Thursday than
Wednesday.
* WINDS...South 20 to 30 mph with gusts up to 45 mph.
* RELATIVE HUMIDITY...As low as 9 percent.
* IMPACTS...Any fires that develop could spread rapidly. Outdoor
burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are imminent. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity
Lake Wind Advisory
URGENT - WEATHER MESSAGE
National Weather Service Reno NV
332 AM PDT Tue May 18 2021
NVZ004-190300-
/O.NEW.KREV.LW.Y.0033.210518T2200Z-210519T0300Z/
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Fernley, Fallon, Lovelock,
Silver Springs, Nixon, and Imlay
332 AM PDT Tue May 18 2021
...LAKE WIND ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO 8 PM
PDT THIS EVENING FOR PYRAMID LAKE...
* WHAT...West to northwest winds 15 to 20 mph with gusts up to 35
mph expected. Waves 1 to 3 feet.
* WHERE...Pyramid Lake.
* WHEN...From 3 PM this afternoon to 8 PM PDT this evening.
* IMPACTS...Small boats, kayaks and paddle boards will be prone to
capsizing and should remain off lake waters until conditions
improve.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Check lake conditions before heading out and be prepared for a
sudden increase in winds and wave heights. Consider postponing
boating activities on the lake until a day with less wind.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/rev
URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
310 AM MDT Tue May 18 2021
IDZ054-190300-
/O.CON.KPIH.LW.Y.0015.210518T1500Z-210519T0300Z/
Lower Snake River Plain-
Including the cities of Pocatello, Blackfoot, American Falls,
Shelley, and Fort Hall
310 AM MDT Tue May 18 2021
...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO
9 PM MDT THIS EVENING...
* WHAT...Southwest winds 15 to 25 mph with gusts up to 35 mph
expected.
* WHERE...American Falls Reservoir.
* WHEN...From 9 AM to 9 PM MDT today.
* IMPACTS...Strong winds and rough waves on area lakes will
create hazardous conditions for small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Boaters on area lakes should use extra caution since strong winds
and rough waves can overturn small craft.
&&
$$
For more information from the National Weather Service visit
https://weather.gov/pocatello
Fire Weather Watch
URGENT - FIRE WEATHER MESSAGE
National Weather Service Las Vegas NV
315 AM PDT Tue May 18 2021
.An approaching weather system will bring gusty south to southwest
winds combined with very dry conditions across the Mojave Desert
of southeast California and parts of southern Nevada and northwest
Arizona Wednesday. Southwest winds will become stronger and
expand across the entire region on Thursday leading to widespread
very high or extreme fire danger.
CAZ226-227-NVZ460-462-182200-
/O.CON.KVEF.FW.A.0005.210520T1500Z-210521T0600Z/
Owens Valley/Southern Inyo Forest-Death Valley National Park-
Esmeralda and Nye County Deserts/CNC Dispatch-
Nye County Deserts/Las Vegas Dispatch-
315 AM PDT Tue May 18 2021
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR
SOUTHEASTERN CALIFORNIA AND SOUTHWEST NEVADA...
* AFFECTED AREA...In California...Fire weather zones 226 and 227.
In Nevada...Fire weather zones 460, 461 and 462.
* TIMING...8 AM PDT Thursday morning until 11 PM PDT Thursday
evening.
* WIND...South-southwest winds 25-35 mph with gusts 40-50 mph.
* HUMIDITY...Relative humidity values will be in the single digits
on Thursday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Make outdoor plans accordingly, and heed
all fire restrictions.
&&
$$
weather.gov/lasvegas
URGENT - FIRE WEATHER MESSAGE
National Weather Service Las Vegas NV
315 AM PDT Tue May 18 2021
.An approaching weather system will bring gusty south to southwest
winds combined with very dry conditions across the Mojave Desert
of southeast California and parts of southern Nevada and northwest
Arizona Wednesday. Southwest winds will become stronger and
expand across the entire region on Thursday leading to widespread
very high or extreme fire danger.
AZZ101-CAZ229-NVZ461-463>466-182200-
/O.EXT.KVEF.FW.A.0005.210519T1900Z-210521T0600Z/
Lake Mead NRA/Colorado River-AZ side-Lower Colorado River Valley-
Lincoln County/Ely Dispatch-Sheep Range-Spring Mountains-
Clark and SW Lincoln County Deserts/Las Vegas Dispatch-
Lake Mead NRA/Colorado River-NV side-
315 AM PDT Tue May 18 2021 /315 AM MST Tue May 18 2021/
...FIRE WEATHER WATCH NOW IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH THURSDAY EVENING FOR STRONG WINDS AND LOW HUMIDITY FOR
SOUTHERN NEVADA, SOUTHEAST CALIFORNIA AND THE COLORADO RIVER
VALLEY...
* AFFECTED AREA...In Arizona...Fire weather zone 101. In
California...Fire weather zone 229. In Nevada...Fire weather
zones 463, 464, 465, and 466.
* TIMING...12 PM Wednesday PDT/MST afternoon until 11 PM PDT/MST
Thursday evening.
* WIND...South to southwest winds 20-25 mph gusting around 35 mph
Wednesday increasing to 25-35 mph with gusts 40-50 mph Thursday.
* HUMIDITY...Relative humidity values will be in the single digits
Wednesday and Thursday with poor overnight recovery.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Make outdoor plans accordingly and heed
all fire restrictions.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
411 AM MDT Tue May 18 2021
UTZ495-497-498-182200-
/O.CON.KSLC.FW.W.0009.210519T1700Z-210521T0300Z/
/O.CON.KSLC.FW.A.0006.210521T1500Z-210522T0300Z/
Color Country West Desert-Mojave Desert-Grand Staircase-
411 AM MDT Tue May 18 2021
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM WEDNESDAY TO
9 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 495, 497, AND 498...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING
THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 495, 497, AND 498...
* AFFECTED AREA...Fire Weather Zone 495 Color Country West
Desert, Fire Weather Zone 497 Mojave Desert and Fire Weather
Zone 498 Grand Staircase.
* TIMING...Winds will be the strongest from noon until early
evening Wednesday and Thursday with winds relaxing during the
nighttime hours. Expect stronger winds on Thursday than
Wednesday.
* WINDS...South 20 to 30 mph with gusts up to 45 mph.
* RELATIVE HUMIDITY...As low as 9 percent.
* IMPACTS...Any fires that develop could spread rapidly. Outdoor
burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are imminent. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Salt Lake City UT
358 PM MDT Mon May 17 2021
UTZ101>131-WYZ021-182200-
Great Salt Lake Desert and Mountains-Tooele and Rush Valleys-
Eastern Box Elder County-Northern Wasatch Front-Salt Lake Valley-
Utah Valley-Cache Valley/Utah Portion-Wasatch Back-
Bear Lake and Bear River Valley-Wasatch Mountains I-80 North-
Wasatch Mountains South of I-80-Western Uinta Mountains-
Wasatch Plateau/Book Cliffs-Western Uinta Basin-
Western Millard and Juab Counties-Eastern Juab/Millard Counties-
Central Mountains-Sanpete Valley-Sevier Valley-Castle Country-
San Rafael Swell-Southwest Utah-Lower Washington County-
Zion National Park-Southern Mountains-Upper Sevier River Valleys-
Bryce Canyon Country-South Central Utah-
Capitol Reef National Park and Vicinity-Western Canyonlands-
Glen Canyon Recreation Area/Lake Powell-Southwest Wyoming-
358 PM MDT Mon May 17 2021
This Hazardous Weather Outlook is for portions of central Utah...
northern Utah...southern Utah...southwest Utah and southwest
Wyoming.
.DAY ONE...This Afternoon and Tonight
Scattered showers and thunderstorms can be expected this evening,
especially over the mountains and across the western valleys.
Utah. Small hail, brief moderate rain, and gusty winds will be
possible.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Southwesterly winds are expected to increase Wednesday through
Friday which will result in hazardous fire weather conditions
across southern Utah where fuels are dry. Winds may reach Wind
Advisory levels on Thursday over the southern 2/3 of the CWA.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed. Please relay any information
about observed severe weather to the NWS while following all
local, state, and CDC guidelines.
$$
For more information from NOAA/s National Weather Service visit...
http://weather.gov/saltlakecity
For information on potential road travel impacts visit...
http://www.udottraffic.utah.gov/roadweatherforecast.aspx
