Storm Prediction Center Day 1 Fire Weather Outlook
Created: Tue Jun 26 07:34:03 UTC 2012
Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 260732
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0232 AM CDT TUE JUN 26 2012
VALID 261200Z - 271200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF SRN/E-CNTRL
NV...W-CNTRL/SWRN UT...
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF CNTRL/ERN MT...CNTRL
WY...
...CRITICAL FIRE WEATHER AREA FOR FAR SERN CO...OK PANHANDLE...WRN
KS...FAR SWRN/S-CNTRL NEB...
...SYNOPSIS...
AN UPPER-LEVEL SHORTWAVE TROUGH WILL EJECT NEWD FROM THE PAC NW
ACROSS THE NRN ROCKIES TODAY. AS THIS OCCURS...SURFACE LOW PRESSURE
WILL DEEPEN OVER ERN MT AND SRN SK. A COLD FRONT WILL THEN
ACCELERATE EWD INTO THE NRN HIGH PLAINS...WHILE ITS SWWD SEGMENT
MOVES MORE SLOWLY ACROSS THE GREAT BASIN. OVER THE CNTRL HIGH
PLAINS...A LEE TROUGH WILL SHARPEN BY AFTERNOON...WHICH WILL FAVOR
STRENGTHENING LOW-LEVEL S-SWLYS ACROSS THE REGION.
...PORTIONS OF SRN/E-CNTRL NV...W-CNTRL/SWRN UT...
A BAND OF MODERATE MIDLEVEL SWLYS OVER THE GREAT BASIN WILL TRAIL
THE DEPARTING TROUGH LIFTING ACROSS THE NRN ROCKIES TODAY. THIS FLOW
COMBINED WITH DEEP BOUNDARY LAYER MIXING WILL FAVOR SUSTAINED
SURFACE WINDS FROM 20-25 MPH DURING THE AFTERNOON. THE STRONG WINDS
COMBINED WITH RH VALUES IN THE SINGLE DIGITS TO LOW TEENS WILL
RESULT IN A CRITICAL FIRE WEATHER THREAT.
...PORTIONS OF CNTRL/ERN MT...CNTRL WY...
A 70 KT MIDLEVEL SPEED MAX IS FORECAST TO ENTER WRN/CNTRL MT LATER
THIS AFTERNOON...AND WILL BE ACCOMPANIED BY A DRY SLOT SPREADING
NEWD INTO CNTRL WY AND ERN MT. THIS WILL LEAD TO THE RAPID ONSET OF
CRITICALLY STRONG SURFACE WIND SPEEDS /FROM 20-30 MPH/ BY LATE
MORNING/EARLY AFTERNOON. RH VALUES WILL ALSO PLUMMET TO 5-15 PERCENT
AS DOWNSLOPE SWLY WINDS SPREAD ACROSS THE AREA. CRITICAL FIRE
WEATHER CONDITIONS WILL BE PROBABLE.
...FAR SERN CO...OK PANHANDLE...WRN KS...FAR SWRN/S-CNTRL NEB...
AS A LEE TROUGH SHARPENS OVER THE CNTRL HIGH PLAINS DURING THE
AFTERNOON...THE SURFACE PRESSURE GRADIENT WILL TIGHTEN AND FAVOR THE
DEVELOPMENT OF SUSTAINED S-SWLY WIND SPEEDS NEAR 20 MPH. VERY HOT
AFTERNOON TEMPERATURES AND A DRY ANTECEDENT AIRMASS WILL ALSO YIELD
SINGLE DIGIT RH VALUES DURING THE PERIOD OF STRONGEST SURFACE WIND
SPEEDS. THESE CONDITIONS COMBINED WITH DRYING FUELS WILL RESULT IN A
CRITICAL FIRE WEATHER THREAT.
...ERN AZ...NWRN NM...ERN UT...WRN/CNTRL CO...SERN WY...
ISOLATED THUNDERSTORMS ARE FORECAST TO DEVELOP THIS AFTERNOON WITHIN
A PLUME OF MIDLEVEL MOISTURE ARCING N-NEWD FROM ERN AZ INTO ERN
UT/WRN CO AND SERN WY. HIGHEST PROBABILITY FOR A FEW DRY
THUNDERSTORMS WILL LIKELY RESIDE ACROSS ERN UT...WRN/CNTRL CO...AND
SERN WY...WHERE WEAK CAPE...PW VALUES BELOW 0.75 INCH...AND
MODERATELY FAST STORM SPEEDS WILL BE PROBABLE.
..GARNER.. 06/26/2012
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...