Alert archive / Nevada / Red Flag Warnings in 2011

Red Flag Warning 2, NWS Las Vegas, NV

May 6, 2011Mohave County, Arizona; San Bernardino County, California; Clark County, Lincoln County, Nye County, Nevada

NWS Las Vegas, NV issued this red flag warning at May 6, 2011, 3:23 PM MST for Mohave County, Arizona; San Bernardino County, California; Clark County, Lincoln County, Nye County, Nevada. It took effect at May 7, 2011, 12:00 PM MST. It was in force for 32 hr. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 6, 2011, 3:23 PM MST (22:23 UTC)
In effect from
May 7, 2011, 12:00 PM MST
Expired
May 8, 2011, 8:00 PM MST
In force
32 hr
Issued by
NWS Las Vegas, NV

Counties Mohave County, AZ, San Bernardino County, CA, Clark County, NV, Lincoln County, NV, Nye County, NV

What was reported inside it

TimeReportWhereRemark
May 8, 4:15 PM MSTNON-TSTM WND GST 58Well 5b (Nts A05), NV
May 8, 4:24 PM MSTNON-TSTM WND GST 60Desert Rock Airport, NVA PEAK WIND GUST OF 60 MPH WAS MEASURED AT THE DESERT ROCK AIRPORT AT AN ELEVATION OF 3301 FEET.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Las Vegas, NV (KVEF), launched 12:00Z, 10.4 hours before the alert went out and 28 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Las Vegas, NV at 12:00Z on 2011-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Las Vegas, NV at 12:00Z on 2011-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4153 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

796 
WWUS85 KVEF 062223
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
323 PM PDT FRI MAY 6 2011

.A STRONG AREA OF LOW PRESSURE WILL BEGIN TO MOVE DOWN THE WEST
COAST ON SATURDAY...REACHING UTAH AND SOUTHERN NEVADA BY MONDAY
MORNING. GUSTY SOUTHWEST WINDS WILL DEVELOP ON SATURDAY AFTERNOON
OVER MUCH OF NORTHWEST ARIZONA. WINDS WILL BECOME QUITE STRONG ACROSS
THE ENTIRE MOJAVE DESERT SUNDAY AS THE LOW PRESSURE SYSTEM MOVES
INTO SOUTHEAST OREGON.

AZZ102-071400-
/O.UPG.KVEF.FW.A.0003.110507T1900Z-110508T0300Z/
/O.NEW.KVEF.FW.W.0002.110507T1900Z-110509T0300Z/
NORTHWEST DESERTS/NORTHWEST PLATEAU-
323 PM MST FRI MAY 6 2011

...RED FLAG WARNING IN EFFECT FROM NOON SATURDAY TO 8 PM MST
SUNDAY BELOW 3500 FEET...

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG
WARNING BELOW 3500 FEET FOR STRONG WINDS AND LOW RELATIVE
HUMIDITY...WHICH IS IN EFFECT FROM NOON SATURDAY TO 8 PM MST
SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT.

SOUTHWEST WINDS WILL INCREASE SATURDAY WITH SUSTAINED WINDS AROUND
20 MPH AND GUSTS AROUND 35 MPH. WINDS WILL NOT DECREASE MUCH
SATURDAY NIGHT AND WILL BECOME EVEN STRONGER ON SUNDAY WITH GUSTS
BETWEEN 40 AND 50 MPH. RELATIVE HUMIDITY VALUES WILL DROP BELOW 10
PERCENT SATURDAY AFTERNOON. WHILE SOME COOLING IS EXPECTED SUNDAY
IT STILL LOOKS LIKE HUMIDITY VALUES SHOULD DROP BELOW 15 PERCENT
AT LOWER ELEVATIONS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE
EXTREME FIRE GROWTH POTENTIAL.

&&

$$

AZZ101-CAZ229-NVZ462-465-466-071400-
/O.NEW.KVEF.FW.W.0002.110508T1900Z-110509T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
323 PM PDT FRI MAY 6 2011 /323 PM MST FRI MAY 6 2011/

...RED FLAG WARNING IN EFFECT FROM NOON PDT /NOON MST/ TO 8 PM
PDT /8 PM MST/ SUNDAY...

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG
WARNING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT FROM NOON PDT /NOON MST/ TO 8 PM PDT /8 PM MST/ SUNDAY.

WINDS WILL BECOME QUITE STRONG SUNDAY AFTERNOON WITH WIDESPREAD
GUSTS BETWEEN 40 AND 50 MPH ACROSS MUCH OF THE AREA. GUSTS MAY NOT
BE QUITE AS STRONG DOWN IN THE LAKE MEAD AREA AND COLORADO RIVER
VALLEY. MOST AREAS BELOW 4000 FEET WILL SEE RELATIVE HUMIDITY
VALUES DIP BELOW 15 PERCENT DESPITE COOLER TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE
EXTREME FIRE GROWTH POTENTIAL.

&&

$$
5 follow-up statements
965 
WWUS85 KVEF 071310
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
610 AM PDT SAT MAY 7 2011

.A STRONG AREA OF LOW PRESSURE WILL MOVE DOWN THE WEST COAST
TODAY AND THEN CONTINUE SOUTH WITH THE CENTER OF THE STORM OVER
CENTRAL NEVADA BY MONDAY MORNING. GUSTY SOUTHWEST WINDS WILL
DEVELOP THIS AFTERNOON OVER MUCH OF NORTHWEST ARIZONA. WINDS WILL
BECOME QUITE STRONG ACROSS THE ENTIRE MOJAVE DESERT SUNDAY AS THE
LOW PRESSURE SYSTEM CONTINUES TO MOVE INTO THE DISTRICT.


AZZ101-CAZ229-NVZ462-465-466-072230-
/O.CON.KVEF.FW.W.0002.110508T1900Z-110509T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
610 AM PDT SAT MAY 7 2011 /610 AM MST SAT MAY 7 2011/

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/ TO
8 PM PDT /8 PM MST/ SUNDAY...

A RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/ TO
8 PM PDT /8 PM MST/ SUNDAY FOR STRONG AND GUSTY WINDS AND LOW
RELATIVE HUMIDITIES.

WINDS WILL BECOME QUITE STRONG SUNDAY AFTERNOON WITH WIDESPREAD
GUSTS BETWEEN 40 AND 50 MPH ACROSS MUCH OF THE AREA. GUSTS MAY
NOT BE QUITE AS STRONG DOWN IN THE LAKE MEAD AREA AND COLORADO
RIVER VALLEY. MOST AREAS BELOW 4000 FEET WILL SEE RELATIVE
HUMIDITY VALUES DIP BELOW 15 PERCENT DESPITE COOLER TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE
EXTREME FIRE GROWTH POTENTIAL.

&&

$$

AZZ102-072230-
/O.CON.KVEF.FW.W.0002.110507T1900Z-110509T0300Z/
NORTHWEST DESERTS/NORTHWEST PLATEAU-
610 AM MST SAT MAY 7 2011

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MST
SUNDAY BELOW 3500 FEET FOR STRONG AND GUSTY WINDS AND LOW RELATIVE
HUMIDITIES...

A RED FLAG WARNING BELOW 3500 FEET REMAINS IN EFFECT FROM NOON
TODAY TO 8 PM MST SUNDAY FOR STRONG AND GUSTY WINDS AND LOW
RELATIVE HUMIDITIES.

SOUTHWEST WINDS WILL INCREASE THIS AFTERNOON...BECOMING SUSTAINED
AROUND 20 MPH AND GUSTS TO AROUND 35 MPH. WINDS WILL NOT DECREASE
MUCH TONIGHT AND THEN WILL BECOME STRONGER ON SUNDAY WITH GUSTS
BETWEEN 40 AND 50 MPH. RELATIVE HUMIDITY VALUES WILL DROP BELOW 10
PERCENT THIS AFTERNOON AND ALTHOUGH SOME COOLING IS EXPECTED ON 
SUNDAY...IT STILL LOOKS LIKE HUMIDITY VALUES SHOULD DROP BELOW 15
PERCENT AT LOWER ELEVATIONS SUNDAY AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE
EXTREME FIRE GROWTH POTENTIAL.

&&

$$
077 
WWUS85 KVEF 072217
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
317 PM PDT SAT MAY 7 2011

.A STRONG AREA OF LOW PRESSURE WILL MOVE DOWN THE WEST COAST
TODAY AND THEN CONTINUE SOUTH WITH THE CENTER OF THE STORM OVER
CENTRAL NEVADA BY MONDAY MORNING. GUSTY SOUTHWEST WINDS WILL
DEVELOP THIS AFTERNOON OVER MUCH OF NORTHWEST ARIZONA. WINDS WILL
BECOME QUITE STRONG ACROSS THE ENTIRE MOJAVE DESERT SUNDAY AS THE
LOW PRESSURE SYSTEM CONTINUES TO MOVE INTO THE DISTRICT.

AZZ101-CAZ229-NVZ462-465-466-081400-
/O.CON.KVEF.FW.W.0002.110508T1900Z-110509T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
317 PM PDT SAT MAY 7 2011 /317 PM MST SAT MAY 7 2011/

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/ TO
8 PM PDT /8 PM MST/ SUNDAY...

A RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/ TO
8 PM PDT /8 PM MST/ SUNDAY FOR GUSTY WINDS AND LOW RELATIVE
HUMIDITY.  

WINDS WILL BECOME QUITE STRONG SUNDAY AFTERNOON WITH WIDESPREAD
GUSTS BETWEEN 40 AND 50 MPH ACROSS MUCH OF THE AREA. GUSTS MAY
NOT BE QUITE AS STRONG DOWN IN THE LAKE MEAD AREA AND COLORADO
RIVER VALLEY. MOST AREAS BELOW 4000 FEET WILL SEE RELATIVE
HUMIDITY VALUES DIP BELOW 15 PERCENT DESPITE COOLER TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE
EXTREME FIRE GROWTH POTENTIAL.

&&

$$

AZZ102-081400-
/O.CON.KVEF.FW.W.0002.000000T0000Z-110509T0300Z/
NORTHWEST DESERTS/NORTHWEST PLATEAU-
317 PM MST SAT MAY 7 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST SUNDAY BELOW
3500 FEET...

A RED FLAG WARNING BELOW 3500 FEET REMAINS IN EFFECT UNTIL 8 PM
MST SUNDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY.

GUSTY SOUTHWEST WINDS WILL PERSIST THROUGH THIS EVENING AT AROUND
20 MPH WITH GUSTS AROUND 35 MPH. WINDS WILL DECREASE SOME
OVERNIGHT BUT THEN WILL BECOME EVEN STRONGER ON SUNDAY WITH GUSTS
BETWEEN 40 AND 50 MPH. RELATIVE HUMIDITY VALUES WILL BE BELOW 10
PERCENT THROUGH THIS EVENING AND ALTHOUGH SOME COOLING IS
EXPECTED ON SUNDAY...IT STILL LOOKS LIKE HUMIDITY VALUES SHOULD
DROP BELOW 15 PERCENT AT LOWER ELEVATIONS SUNDAY AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE
EXTREME FIRE GROWTH POTENTIAL.

&&

$$
199 
WWUS85 KVEF 081302
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
602 AM PDT SUN MAY 8 2011

.A STRONG AREA OF LOW PRESSURE WILL MOVE DOWN THE WEST COAST
TODAY AND THEN CONTINUE SOUTH WITH THE CENTER OF THE STORM OVER
CENTRAL NEVADA BY MONDAY MORNING. STRONG AND GUSTY SOUTHWEST WINDS
WILL CONTINUE ACROSS THE DISTRICT TODAY...WITH VERY STRONG WINDS
EXPECTED OVER THE DESERT AREAS OF SOUTHEAST CALIFORNIA. WINDS WILL
BEGIN TO DECREASE TONIGHT.

AZZ101-CAZ229-NVZ462-465-466-082230-
/O.CON.KVEF.FW.W.0002.110508T1900Z-110509T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
602 AM PDT SUN MAY 8 2011 /602 AM MST SUN MAY 8 2011/

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/
TODAY TO 8 PM PDT /8 PM MST/ THIS EVENING...

A RED FLAG WARNING REMAINS IN EFFECT FROM NOON PDT /NOON MST/
TODAY TO 8 PM PDT /8 PM MST/ THIS EVENING FOR STRONG WINDS AND LOW
RELATIVE HUMIDITIES.

WINDS WILL BECOME QUITE STRONG THIS AFTERNOON WITH WIDESPREAD
GUSTS BETWEEN 40 AND 50 MPH ACROSS MUCH OF THE AREA. GUSTS MAY NOT
BE QUITE AS STRONG DOWN IN THE LAKE MEAD AREA AND COLORADO RIVER
VALLEY. MOST AREAS BELOW 4000 FEET WILL SEE RELATIVE HUMIDITY
VALUES DIP BELOW 15 PERCENT DESPITE COOLER TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...WILL CREATE EXTREME FIRE GROWTH
POTENTIAL.

&&

$$

AZZ102-082230-
/O.CON.KVEF.FW.W.0002.000000T0000Z-110509T0300Z/
NORTHWEST DESERTS/NORTHWEST PLATEAU-
602 AM MST SUN MAY 8 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING
BELOW 3500 FEET...

A RED FLAG WARNING BELOW 3500 FEET REMAINS IN EFFECT UNTIL 8 PM
MST THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES. 

GUSTY WINDS WILL INCREASE THIS MORNING WITH GUSTS BETWEEN 40 AND
50 MPH EXPECTED LATE THIS MORNING INTO THIS AFTERNOON. ALTHOUGH
SOME COOLING IS EXPECTED THIS AFTERNOON...IT STILL LOOKS LIKE
HUMIDITY VALUES SHOULD DROP BELOW 15 PERCENT AT LOWER ELEVATIONS
THUS CONTINUING THE CRITICAL FIRE WEATHER CONDITIONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...WILL CREATE EXTREME FIRE GROWTH
POTENTIAL.

&&

$$
277 
WWUS85 KVEF 082008
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
108 PM PDT SUN MAY 8 2011

.A STRONG AREA OF LOW PRESSURE WILL CONTINUE TO MOVE INTO OREGON
TODAY WITH THE CENTER OF THE STORM THEN OVER CENTRAL NEVADA BY
MONDAY MORNING. STRONG AND GUSTY SOUTHWEST WINDS WILL CONTINUE
ACROSS THE AREA TODAY...WITH VERY STRONG WINDS EXPECTED OVER THE
DESERT AREAS OF SOUTHEAST CALIFORNIA. WINDS WILL BEGIN TO DECREASE
TONIGHT.

AZZ101-CAZ229-NVZ462-465-466-090300-
/O.CON.KVEF.FW.W.0002.000000T0000Z-110509T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
108 PM PDT SUN MAY 8 2011 /108 PM MST SUN MAY 8 2011/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/
THIS EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/
THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY.

STRONG WINDS WILL CONTINUE THIS AFTERNOON AND EVENING WITH
WIDESPREAD GUSTS BETWEEN 40 AND 50 MPH ACROSS MUCH OF THE AREA.
GUSTS MAY NOT BE QUITE AS STRONG DOWN IN THE LAKE MEAD AREA AND
COLORADO RIVER VALLEY. MOST AREAS BELOW 4000 FEET WILL SEE
RELATIVE HUMIDITY VALUES DIP BELOW 15 PERCENT DESPITE COOLER
TEMPERATURES. WINDS EARLY THIS AFTERNOON WERE ALREADY GUSTING OVER
40 MPH IN MANY LOCATIONS BUT ONLY A COUPLE OF SPOTS HAD HUMIDITIES
DROP TO 15 PERCENT. HUMIDITY IS STILL EXPECTED TO LOWER THROUGHOUT
THE AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...WILL CREATE EXTREME FIRE GROWTH
POTENTIAL.

&&

$$

AZZ102-090300-
/O.CON.KVEF.FW.W.0002.000000T0000Z-110509T0300Z/
NORTHWEST DESERTS/NORTHWEST PLATEAU-
108 PM MST SUN MAY 8 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING
BELOW 3500 FEET...

A RED FLAG WARNING BELOW 3500 FEET REMAINS IN EFFECT UNTIL 8 PM
MST THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY.

STRONG WINDS WILL CONTINUE THIS AFTERNOON AND EVENING WITH GUSTS
BETWEEN 40 AND 50 MPH. ALTHOUGH TEMPERATURES WILL BE COOLER TODAY
IT STILL LOOKS LIKE HUMIDITY VALUES SHOULD DROP BELOW 15 PERCENT
AT LOWER ELEVATIONS THUS CONTINUING THE CRITICAL FIRE WEATHER
CONDITIONS. WINDS EARLY THIS AFTERNOON WERE ALREADY GUSTING OVER
40 MPH IN MANY LOCATIONS BUT ONLY A COUPLE OF SPOTS HAD HUMIDITIES
DROP TO 15 PERCENT. HUMIDITY IS STILL EXPECTED TO LOWER THROUGHOUT
THE AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING OR ARE IMMINENT. A COMBINATION OF STRONG
WINDS...LOW RELATIVE HUMIDITY...WILL CREATE EXTREME FIRE GROWTH
POTENTIAL.

&&

$$
944 
WWUS85 KVEF 090235
RFWVEF

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
735 PM PDT SUN MAY 8 2011

AZZ101-CAZ229-NVZ462-465-466-090345-
/O.EXP.KVEF.FW.W.0002.000000T0000Z-110509T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-LOWER COLORADO RIVER VALLEY-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
735 PM PDT SUN MAY 8 2011 /735 PM MST SUN MAY 8 2011/

...RED FLAG WARNING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL
EXPIRE AT 8 PM PDT /8 PM MST/ THIS EVENING...

RELATIVE HUMIDITY HAD RECOVERED ABOVE 15 PERCENT OVER NEARLY ALL
OF THE WARNING AREA THIS EVENING. THEREFORE...THE RED FLAG
WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM.

$$

AZZ102-090345-
/O.EXP.KVEF.FW.W.0002.000000T0000Z-110509T0300Z/
NORTHWEST DESERTS/NORTHWEST PLATEAU-
735 PM MST SUN MAY 8 2011

...RED FLAG WARNING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL
EXPIRE AT 8 PM MST THIS EVENING...

RELATIVE HUMIDITY HAD RECOVERED ABOVE 15 PERCENT OVER NEARLY ALL
OF THE WARNING AREA THIS EVENING. THEREFORE...THE RED FLAG
WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM.

$$

MORGAN

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 6, 3:35 PM MSTWind AdvisoryVEFMohave53 hr

Nearby

Red Flag Warnings in Nevada, 2011Red Flag Warnings in Arizona, 2011Red Flag Warnings in California, 2011Every red flag warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.