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Red Flag Warning


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 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.

CAZ227-NVZ460-191200-
/O.UPG.KVEF.FW.A.0005.210520T1500Z-210521T0600Z/
/O.NEW.KVEF.FW.W.0009.210520T1800Z-210521T1200Z/
Death Valley National Park-
Esmeralda and Nye County Deserts/CNC Dispatch-
309 PM PDT Tue May 18 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM THURSDAY TO 5 AM PDT
FRIDAY 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 Thursday to 5 AM PDT
Friday. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Nevada...Fire weather zones 460. In
  California...Fire weather zone 227.

* TIMING...11 AM PDT Thursday morning until 5 AM PDT Friday
  morning.

* 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.

&&

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.

&&

$$


weather.gov/lasvegas

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.

NVZ462-191200-
/O.UPG.KVEF.FW.A.0005.210520T1500Z-210521T0600Z/
/O.NEW.KVEF.FW.W.0009.210519T1800Z-210521T1200Z/
Nye County Deserts/Las Vegas Dispatch-
309 PM PDT Tue May 18 2021

...RED FLAG WARNING IN EFFECT FROM 11 AM WEDNESDAY TO 5 AM PDT
FRIDAY 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 Wednesday to 5 AM PDT
Friday. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Nevada...Fire weather zones 462.

* TIMING...11 AM PDT Wednesday morning until 5 AM PDT Friday
  morning.

* WIND...South-southwest winds 25-35 mph with gusts 40-50 mph.

* HUMIDITY...Relative humidity values will mostly be in the single
  digits on Wednesday and Thursday afternoons. Relative humidity
  will marginally recover overnight, better overnight recovery is
  expected Thursday night into early 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.

&&

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
325 PM MDT Tue May 18 2021

UTZ495-497-498-191400-
/O.CAN.KSLC.FW.A.0006.210521T1500Z-210522T0300Z/
/O.EXT.KSLC.FW.W.0009.210519T1700Z-210522T0300Z/
Color Country West Desert-Mojave Desert-Grand Staircase-
325 PM MDT Tue May 18 2021

...RED FLAG WARNING NOW IN EFFECT FROM 11 AM WEDNESDAY TO 9 PM
MDT FRIDAY 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...Red Flag conditions are expected to develop by late
  morning each day and continue until sunset, with lighter winds
  and some overnight RH recovery each night.

* WINDS...South 20 to 30 mph with gusts up to 40 mph Wednesday,
  then increasing to 25 to 35 with gusts in excess of 50 mph
  Thursday. Southwest winds 20 to 30 mph with gusts to 40 mph
  again Friday.

* RELATIVE HUMIDITY...As low as 7 percent each afternoon with poor
  overnight recovery.

* 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.

&&

$$

For more information from NOAA/National Weather Service visit...
http://weather.gov/saltlakecity

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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