Las Vegas, NV...Henderson, NV...N. Las Vegas, NV...Flagstaff, AZ...Lake Havasu City, AZ...
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 220722
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0222 AM CDT WED MAY 22 2013
VALID 221200Z - 231200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN NV...EXTREME NE CA
AND MUCH OF NRN AZ...
...SYNOPSIS...
...PORTIONS OF SRN NV...EXTREME NE CA AND MUCH OF NRN AZ...
DEEP LAYER WLY FLOW WILL INCREASE ACROSS THE SOUTHWESTERN U.S. TODAY
AS A LARGE UPPER LOW OVER THE PACIFIC NW DIGS SOUTHWARD. DEVELOPING
SFC LOW PRESSURE ACROSS THE GREAT BASIN WILL LEAD TO A TIGHTENING
PRESSURE GRADIENT FROM NV INTO CNTRL AND SRN CA. AS TEMPERATURES
WARM INTO THE 90S TO NEAR 100 DEGREES /LOWER IN THE MOUNTAINS/ DEEP
BOUNDARY LAYER MIXING WILL OCCUR AND RH VALUES FALLING INTO THE
10-15 PERCENT RANGE WILL BE WIDESPREAD. SUSTAINED WIND SPEEDS MAY BE
SOMEWHAT MARGINAL IN THE 15-20 MPH RANGE...BUT GUSTY WINDS TO 30-35
MPH WILL HELP TO ELEVATE THE FIRE WEATHER THREAT WHERE FUELS ARE DRY
AND AT LEAST LOW-END CRITICAL CONDITIONS ARE EXPECTED FOR A FEW
HOURS DURING THE AFTERNOON. STRONG WINDS AND LOW RH VALUES WILL
EXTEND INTO THE SE CA DESERTS BUT LACK OF FUELS WILL LIMIT A
WIDESPREAD THREAT IN THIS AREA.
...CENTRAL NV...SRN UT INTO SW CO...MUCH OF NM AND SRN AZ...
MARGINAL CONDITIONS ARE EXPECTED SURROUNDING THE CRITICAL AREA. WIND
SPEEDS WILL BE WEAKER TO THE EAST ACROSS NM AND SRN AZ...FURTHER
REMOVED FROM STRONGEST MID LEVEL FLOW AND SFC PRESSURE GRADIENT.
ACROSS SRN UT...A MIX OF DRY AND GREEN FUELS WILL LIMIT POTENTIAL IN
THAT AREA.
...CENTRAL CA VALLEYS...
BREEZY N WINDS ARE EXPECTED TO DEVELOP DURING THE MORNING AND
PERSIST INTO THE AFTERNOON. SPEEDS OF 10-15 MPH WITH SOME HIGHER
GUSTS ARE EXPECTED. RH VALUES WILL RANGE FROM 10-20 PERCENT AS
TEMPERATURES WARM INTO THE 70S...LEADING TO AN ELEVATED FIRE THREAT.
..LEITMAN.. 05/22/2013
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)