Red Flag Warning 25, NWS Las Vegas, NV

000 
WWUS85 KVEF 041150
RFWVEF

RED FLAG WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
450 AM PDT WED JUN 4 2008

AZZ101-102-CAZ228-229-NVZ461>466-050300-
/O.CON.KVEF.FW.W.0025.080604T1900Z-080605T0300Z/
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-
NORTHWEST DESERTS/NORTHWEST PLATEAU-MOJAVE DESERT-
LOWER COLORADO RIVER VALLEY-LINCOLN COUNTY/ELY DISPATCH-
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-SHEEP RANGE-
SPRING MOUNTAINS-
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-
450 AM PDT WED JUN 4 2008 /450 AM MST WED JUN 4 2008/

...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 ACROSS MUCH OF SOUTHERN
NEVADA AND NORTHWEST ARIZONA BELOW 7000 FEET FOR STRONG WINDS AND
LOW RELATIVE HUMIDITY.

A STRONG LOW PRESSURE SYSTEM WILL MOVE INTO EAST CENTRAL NEVADA
TODAY. AN ASSOCIATED COLD FRONT WILL MOVE ACROSS THE AREA TODAY
AND THIS EVENING WITH STRONG SOUTHWEST WINDS AHEAD OF THE FRONT
AND STRONG NORTHERLY WINDS BEHIND THE FRONT. SUSTAINED WINDS IN
THE 20 TO 30 MPH RANGE ARE EXPECTED WITH GUSTS BETWEEN 40 AND 50
MPH LIKELY LATER THIS AFTERNOON AND DURING THE EVENING. MINIMUM
RELATIVE HUMIDITIES WILL BE BELOW 15 PERCENT OVER MUCH OF THE AREA
EXCEPT ABOVE 7000 FEET AND PERHAPS ACROSS NORTHERN AND EASTERN
LINCOLN COUNTY WHERE THERE WILL BE A CHANCE OF SHOWERS AND
THUNDERSTORMS. STRONG WINDS WILL LIKELY CONTINUE PAST 8 PM IN MANY
AREAS BUT RELATIVE HUMIDITY SHOULD BE RECOVERING BY THEN.

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.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
355 PM PDT TUE JUN 3 2008

.SYNOPSIS...STRONG GUSTY WINDS CAN BE EXPECTED WEDNESDAY AS A COLD
FRONT PUSHES THROUGH THE GREAT BASIN. SHOWERS AND THUNDERSTORMS WILL
BE CONFINED TO EASTERN NEVADA AND FAR NORTHWEST ARIZONA. COOLER
TEMPERATURES WILL PREVAIL WEDNESDAY AND THURSDAY WITH A QUICK
REBOUND TO NEAR NORMAL FRIDAY.

&&

.SHORT TERM...PROGRESSIVE SPRING-LIKE PATTERN CONTINUES WITH AN
UNSEASONABLY STRONG JETSTREAM (> 150-KTS) DIGGING INTO THE BACK SIDE
OF THE AMPLIFYING OFFSHORE TROUGH. CLOSED LOW AND ATTENDANT COLD
FRONT WILL DIVE INTO NEVADA TOMORROW RESULTING IN STRONG SW WINDS
AHEAD OF THE FRONT AND STRONG NW WINDS BEHIND IT. WIND ADVISORY
CONDITIONS ARE EXPECTED TO BE EXCEEDED OVER THE WESTERN MOJAVE
DESERT INTO NORTHWEST ARIZONA. SOUTHERN NEVADA WILL BE WINDY BUT NOT
LOOKING FOR ADVISORY WINDS UNTIL AFTER THE COLD FRONT PASSES HERE.
NORTH-SOUTH VALLEYS WILL BE PARTICULARLY PRONE TO STRONG GUSTS
BEHIND THE FRONT. AFTERNOON HIGHS WILL FALL ABOUT 10-12 DEGREES
BETWEEN TODAY AND THURSDAY BUT SHOULD REBOUND QUICKLY FRIDAY AND
SATURDAY UNDER THE INFLUENCE OF THE JUNE SUN AND HEIGHT RISES OF
MORE THAN 200M.

.LONG TERM...SATURDAY MORNING THROUGH TUESDAY...BROAD AGREEMENT
FINALLY IN MODELS WITH DIFFERENCES BEING IN DEPTH AND TIMING OF
SYSTEMS. STARTING ON SATURDAY AREA WILL BE UNDER A BROAD TROUGH THAT
WILL MOVE THROUGH THE AREA WITH PASSAGE SOMETIME EARLY ON SUNDAY.
FOR NOW EXPECT MAIN EFFECTS ON WEATHER TO BE SOME BREEZY CONDITIONS
IN PARTS OF THE EASTERN CWA. NO MOISTURE IS EXPECTED TO BE
ASSOCIATED WITH THIS SYSTEM THIS FAR SOUTH SO HAVE KEPT CLOUD COVER
MINIMAL AND JUST GHOST POPS IN THE NORTH. MONDAY AND TUESDAY BRING
IN SOME GREATER MODEL DIFFERENCES IN HANDLING THE NEXT SYSTEM TO
ENTER THE PICTURE. GFS BRINGS IN A STRONGER LOW TOWARDS THE PACNW
COAST AND FURTHER SOUTH THAN THE ECMWF BY TUESDAY. THIS DIFFERENCE
WILL NOT MATER MUCH IN SENSIBLE WEATHER THIS FAR SOUTH AND HENCE
MONDAY AND TUESDAY WILL SEE ESSENTIALLY ZONAL FLOW OVER THE AREA AND
A SLOW WARMING TREND ON TUESDAY ONWARDS.
&&

.AVIATION...FOR MCCARRAN...WINDS WILL BE THE MAIN CONCERN THROUGH
THURSDAY MORNING. FOR THIS AFTERNOON SOUTHWEST GUSTS WILL WEAKEN
THIS EVENING AND A STEADY SOUTHWEST WIND WILL CONTINUE THROUGH LATE
MORNING WEDNESDAY. AN APPROACHING COLD FRONT WILL BRING
STRENGTHENING SOUTHWEST WINDS WEDNESDAY AFTERNOON WITH GUSTS
APPROACHING 35 KNOTS. DURING WEDNESDAY EVENING A FRONT WILL PASS
THROUGH HE LAS VEGAS VALLEY AND SWITCH THE WINDS TO THE NORTHWEST TO
NORTH WITH GUSTS 35-40 KNOTS LIKELY. NORTH WINDS WILL CONTINUE
THROUGH WEDNESDAY NIGHT AND INTO TUESDAY MORNING. NO PRECIPITATION
OR SIGNIFICANT CLOUD COVER EXPECTED THROUGH THURSDAY MORNING.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A FRONT WILL MOVE THROUGH THE AREA LATE WEDNESDAY
BRINGING WITH IT WIDESPREAD STRONG WINDS. UNTIL THEN THE ONLY
SIGNIFICANT WEATHER WILL BE GUSTY WEST WINDS IN WESTERN SAN
BERNARDINO COUNTY THIS AFTERNOON AND WEDNESDAY MORNING WITH GUSTS TO
40 KNOTS. BY WEDNESDAY AFTERNOON THE ENTIRE AREA WILL SEE GUSTY
SOUTHWEST WINDS AHEAD ON AN APPROACHING FRONT AND THEN GUSTY FROM
THE NORTH AFTER ITS PASSAGE AND LASTING THROUGHOUT WEDNESDAY NIGHT
AND INTO THURSDAY MORNING.

&&

.FIRE WEATHER...STRONG WINDS WILL DEVELOP WEDNESDAY AFTERNOON FROM
THE MOJAVE DESERT EASTWARD INTO NORTHWEST ARIZONA IN ADVANCE OF A
COLD FRONT MOVING THROUGH THE GREAT BASIN. STRONG NORTHWEST WINDS
BEHIND THE FRONT WILL IMPACT PARTS OF EAST CENTRAL CALIFORNIA AND
CENTRAL NEVADA. A RED FLAG WARNING IS IN EFFECT FOR SEVERAL ZONES
FROM SOUTHEAST CALIFORNIA ACROSS SOUTHERN NEVADA AND NORTHWEST
ARIZONA WHERE THESE STRONG WINDS WILL BE ACCOMPANIED BY CRITICALLY
LOW RELATIVE HUMIDITY VALUES.

&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...RED FLAG WARNING FROM 12 PM TO 8 PM PDT WEDNESDAY FOR
NVZ461>466.
WIND ADVISORY FROM 8 PM WEDNESDAY TO 2 AM PDT THURSDAY FOR
NVZ020.
WIND ADVISORY FROM 2 PM TO 9 PM PDT WEDNESDAY FOR NVZ014.

AZ...RED FLAG WARNING FROM 12 PM TO 8 PM MST WEDNESDAY FOR
AZZ101-102.
WIND ADVISORY FROM 2 PM TO 9 PM MST WEDNESDAY FOR AZZ002-003.

CA...RED FLAG WARNING FROM 12 PM TO 8 PM PDT WEDNESDAY FOR
CAZ228-229.
WIND ADVISORY FROM 2 PM TO 9 PM PDT WEDNESDAY FOR
CAZ520-522-524-526-527.
WIND ADVISORY UNTIL 9 PM PDT WEDNESDAY FOR CAZ523-525.
&&

RUNK/JACQUES

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
531 AM PDT TUE JUN 3 2008

AZZ001>003-036-CAZ519>527-NVZ014>022-040345-
NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS-
LAKE MEAD NATIONAL RECREATION AREA-EASTERN SIERRA SLOPES-
OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY-
DEATH VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT-
EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN-
SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
ESMERALDA AND CENTRAL NYE COUNTY-LINCOLN COUNTY-
NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY-
SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY-
SOUTHERN CLARK COUNTY-
531 AM PDT TUE JUN 3 2008 /531 AM MST TUE JUN 3 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
ARIZONA...CALIFORNIA AND SOUTHERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

LOCALLY BREEZY TO WINDY CONDITIONS WILL DEVELOP THIS AFTERNOON AND
CONTINUE TONIGHT AS A LOW PRESSURE SYSTEM DEVELOPS OVER THE
PACIFIC NORTHWEST. WINDS WILL BE PARTICULARLY STRONG OVER THE
SIERRA AND IN THE WESTERN SAN BERNARDINO COUNTY DESERT AREA. A
WIND ADVISORY IS IN EFFECT THIS AFTERNOON AND TONIGHT FOR WESTERN
SAN BERNARDINO COUNTY INCLUDING THE BARSTOW AREA AND NEAR TWENTY
NINE PALMS. WIND GUSTS AROUND 40 MPH ARE EXPECTED THIS AFTERNOON
THROUGH THE EVENING. WINDS MAY DECREASE SOMEWHAT AFTER MIDNIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE LOW PRESSURE SYSTEM WILL MOVE OUT OF THE PACIFIC NORTHWEST AND
INTO NORTHEAST NEVADA WEDNESDAY AND INTO SOUTHEAST UTAH WEDNESDAY
NIGHT. THE WIND ADVISORY FOR THE WESTERN SAN BERNARDINO COUNTY
DESERT AREA CONTINUES WEDNESDAY THROUGH MUCH OF WEDNESDAY NIGHT
WITH GUSTS AROUND 50 MPH POSSIBLE. WINDS WILL BE INCREASING IN
MOST OTHER AREAS WEDNESDAY AFTERNOON THROUGH THURSDAY MORNING AS A
COLD FRONT MOVES THROUGH THE AREA.

IN ADDITION...SCATTERED THUNDERSTORMS WILL DEVELOP WEDNESDAY OVER
LINCOLN COUNTY AND WILL SPREAD INTO NORTHERN MOHAVE COUNTY
WEDNESDAY NIGHT. TEMPERATURES WILL BE ABOUT 10 DEGREES BELOW
NORMAL THURSDAY BEHIND THE COLD FRONT. DRY WEST TO SOUTHWEST FLOW
IS EXPECTED OVER THE FORECAST AREA FRIDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED BUT WEATHER SPOTTERS ARE
ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO
STANDARD OPERATING PROCEDURES.