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Fire Weather Watch


URGENT - FIRE WEATHER MESSAGE
National Weather Service Las Vegas NV
309 PM PDT Tue May 18 2021

.An approaching weather system will bring gusty south to
southwest winds will combine 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. Winds are expected
to remain gusty through much of Friday across portions of the
region.

AZZ101-102-CAZ228-229-NVZ461-463>466-191200-
/O.UPG.KVEF.FW.A.0005.210519T1900Z-210521T0600Z/
/O.NEW.KVEF.FW.W.0009.210519T1800Z-210521T1200Z/
/O.NEW.KVEF.FW.A.0006.210521T1200Z-210522T0600Z/
Lake Mead NRA/Colorado River-AZ side-
Northwest Deserts/Northwest Plateau-
Mojave Desert Including Morongo Valley/Yucca Valley-
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-
309 PM PDT Tue May 18 2021 /309 PM MST Tue May 18 2021/

...A RED FLAG WARNING IS IN EFFECT FROM 11 AM PDT /11 AM MST/
WEDNESDAY TO 5 AM PDT /5 AM MST/ FRIDAY FOR STRONG WINDS AND LOW
HUMIDITY...

...A FIRE WEATHER WATCH IS IN EFFECT FROM EARLY FRIDAY MORNING
THROUGH EARLY SATURDAY MORNING FOR STRONG WINDS AND LOW
HUMIDITY...

The National Weather Service in Las Vegas has issued a Red Flag
Warning, which is in effect from 11 AM PDT /11 AM MST/ Wednesday
to 5 AM PDT /5 AM MST/ Friday. A Fire Weather Watch has also been
issued. This Fire Weather Watch is in effect from early Friday
morning through early Saturday morning.

* AFFECTED AREA...In Arizona...Fire weather zone 101 and 102. In
  California...Fire weather zone 228 and 229. In Nevada...Fire
  weather zones 461, 463, 464, 465, and 466.

* TIMING...A Red Flag Warning is in effect from 11 AM PDT/MST
  Wednesday afternoon until 5 AM PDT/MST Friday morning. A Fire
  Weather Watch is in effect from 5 AM Friday through 5 AM
  Saturday.

* WIND...South to southwest winds 20-25 mph gusting around 35-45
  mph Wednesday increasing to 25-35 mph with gusts 40-50 mph
  Thursday. Strongest winds are expected across western San
  Bernardino County where gusts to 45-55 mph are possible. Winds
  and dry conditions may persist into Friday.

* HUMIDITY...Relative humidity values be in the single digits both
  Wednesday and Thursday, with marginal overnight recovery.
  Relative humidity could increase marginally but may remain
  below 20-15 percent Friday.

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.

&&

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.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Flagstaff AZ
305 AM MST Tue May 18 2021

AZZ104>114-137>140-182300-
/O.NEW.KFGZ.FW.A.0008.210520T1800Z-210521T0300Z/
Kaibab Plateau (Fire Weather Zone 104)-
Marble and Glen Canyons (Fire Weather Zone 105)-
Grand Canyon Country (Fire Weather Zone 106)-
Coconino Plateau (Fire Weather Zone 107)-
Yavapai County Mountains (Fire Weather Zone 108)-
Northeast Plateau And Mesas Hwy 264 Northward (Fire Weather Zone
109)-Chinle Valley (Fire Weather Zone 110)-
Chuska Mountains and Defiance Plateau (Fire Weather Zone 111)-
Little Colorado River Valley in Coconino County (Fire Weather
Zone 112)-
Little Colorado River Valley in Navajo County (Fire Weather Zone
113)-
Little Colorado River Valley in Apache County (Fire Weather Zone
114)-Yavapai County Valleys and Basins (Fire Weather Zone 137)-
Oak Creek and Sycamore Canyons (Fire Weather Zone 138)-
Black Mesa Area (Fire Weather Zone 139)-
Northeast Plateaus and Mesas South of Hwy 264 (Fire Weather Zone
140)-
305 AM MST Tue May 18 2021

...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY
FOR MUCH OF NORTHERN ARIZONA...

The National Weather Service in Flagstaff has issued a Fire
Weather Watch due to strong winds and low relative humidity,
which is in effect from Thursday morning through Thursday
evening.

* AFFECTED AREA...Locations near Buffalo Pass, Camp Verde,
  Chinle, Chino Valley, Congress, Cottonwood, Dilkon, Eagar-
  Springerville, Fredonia, Ganado, Grand Canyon, Holbrook, Jacob
  Lake, Kayenta, Kykotsmovi, North Rim, Page, Paulden, Prescott,
  Prescott Valley, Saint Johns, Sedona, Seligman, Shonto,
  Snowflake- Taylor, Tuba City, Valle, Window Rock and Winslow.
  This includes portions of the Coconino National Forest, Kaibab
  National Forest, Prescott National Forest and Tonto National
  Forest.

* WINDS...Southwest 20 to 30 mph with gusts up to 40 mph possible.
  Wind prone areas along the ridges, Kaibab and Coconino plateaus,
  and eastern slopes of the Mogollon Rim could see higher gusts of
  up to 50 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* 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...

A Fire Weather Watch means that critical fire weather conditions
are possible. Listen for later forecasts and possible red flag
warnings.

Please notify field crews of this fire weather watch.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/flagstaff

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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