Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL FNUS21 KWNS 040842 DAY 1 FIRE WEATHER OUTLOOK RESENT 1 NWS STORM PREDICTION CENTER NORMAN OK 0342 AM CDT SAT AUG 04 2007 VALID 041200Z - 051200Z ...CRITICAL FIRE WEATHER AREA FOR NWRN MT... ...CRITICAL FIRE WEATHER AREA FOR NERN CA...NWRN NV...FAR SERN OREGON... ...SYNOPSIS... AN UPPER TROUGH WILL REMAIN OVER THE PACIFIC NW...AND WILL GRADUALLY SINK SWD INTO THE WRN GREAT BASIN LATE IN THE PERIOD. A LEAD SHORTWAVE TROUGH WILL CONTINUE EWD INTO MANITOBA...LEAVING A COLD FRONT IN ITS WAKE OVER MT...WHERE DRY WLY WINDS WILL CREATE LOCALLY CRITICAL CONDITIONS. FLOW ALOFT WILL ALSO INCREASE INTO THE WRN GREAT BASIN AND WILL CREATE CRITICAL CONDITIONS FROM NERN CA INTO THE FAR WRN GREAT BASIN WITH GUSTY WINDS AND LOW RH. ELSEWHERE...HIGH PRESSURE WILL SETTLE ACROSS THE GREAT LAKES REGION WITH DRY AND MILD CONDITIONS. WARM AND BREEZY CONDITIONS WILL PREVAIL ACROSS THE CNTRL PLAINS SOUTH OF A COLD FRONT WHICH WILL EXTEND FROM MN INTO NEBRASKA WITH NUMEROUS THUNDERSTORMS. ...CRITICAL FIRE WEATHER AREA - NWRN MT... PRIMARY CONDITIONS: STRONG WIND GUSTS...LOW RH...SHIFTING WINDS WLY WINDS WILL INCREASE THROUGH THE DAY BEHIND A COLD FRONT. SUSTAINED SPEEDS OF 15-20 MPH WILL BE WIDESPREAD...WITH HIGHER GUSTS TO AROUND 30 MPH MAINLY NEAR RIDGE TOPS. RH WILL DECREASE TO AROUND 15 PERCENT BY LATE AFTERNOON. THE DOWNSLOPE WINDS AND STRONG HEATING WILL RESULT IN DEEP MIXING LAYERS WHICH WILL BE FAVORABLE FOR FIRE GROWTH. WINDS WILL WEAKEN LATE IN THE DAY BUT WILL SHIFT TO MORE OF A NLY DIRECTION WHICH MAY RESULT IN CHANGING FIRE DIRECTION. ...CRITICAL FIRE WEATHER AREA - NERN CA...NWRN NV...FAR SERN OREGON... PRIMARY CONDITIONS: STRONG WINDS...VERY LOW RH...MDT HAINES MID TO UPPER LEVEL WINDS WILL INCREASE ACROSS THE REGION AS UPPER TROUGH SINKS SWD OUT OF THE PACIFIC NW. STRONG HEATING AND WLY DOWNSLOPE FLOW WILL RESULT IN SUSTAINED WINDS NEAR 20 MPH WITH HIGHER GUSTS OVER 30 MPH. MIN RH WILL LIKELY AVERAGE NEAR 10 PERCENT BY AFTERNOON. THE DEEPLY MIXED AND DRY AIR MASS WILL RESULT IN A MDT HAINES INDEX. ...SWRN MT...ERN ID...NWRN WY... PRESENCE OF COOL AIR ALOFT WITH UPPER TROUGH...HEATING AND SWLY FLOW WILL RESULT IN ISOLATED TO SCATTERED THUNDERSTORMS THIS AFTERNOON. A MIXTURE OF WET AND DRY STORMS IS LIKELY. SUB-CLOUD LAYER RH WILL AVERAGE 25-35 PERCENT WHICH WILL FAVOR EVAPORATION OF RAIN AND GUSTY WINDS. DEEP LAYER WIND SHEAR WILL BE FAVORABLE FOR A FEW STRONG STORMS...WHICH WOULD CONTAIN RAIN AND GUSTY WINDS. ..JEWELL.. 08/04/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL FNUS22 KWNS 040905 DAY 2 FIRE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0405 AM CDT SAT AUG 04 2007 VALID 051200Z - 061200Z ...CRITICAL FIRE WEATHER AREA FOR NERN CA...NWRN NV...SERN OR... ...SYNOPSIS... UPPER RIDGE WILL WEAKEN A BIT ACROSS THE WRN STATES AS SHORTWAVE TROUGH MOVES ACROSS CA INTO THE WRN GREAT BASIN. WINDS WILL LIKELY BE A BIT STRONGER THAN PREVIOUS DAY WITH CONTINUED LOW RH. THIS APPROACHING UPPER TROUGH WILL ALSO RESULT IN STRONGER WINDS OVER THE SRN GREAT BASIN INTO SRN CA. A FEW DRY THUNDERSTORMS ARE LIKELY AS WELL...MAINLY OVER NV LATE. MEANWHILE...SURFACE FRONT WILL SETTLE OVER SRN MT WITH MAINLY LIGHT NLY WINDS PREVAILING N OF THE FRONT. ...CRITICAL FIRE WEATHER AREA - NERN CA...NWRN NV...SERN OR... PRIMARY CONDITIONS: STRONG WIND GUSTS...LOW RH SUSTAINED SWLY WINDS NEAR 20 MPH WILL OCCUR WITH HIGHER GUSTS TO 30 MPH. THIS WILL COMBINE WITH RH NEAR 15 PERCENT AND VERY DRY FUELS TO PRODUCE CRITICAL CONDITIONS DURING THE AFTERNOON/PEAK HEATING HOURS. WINDS MAY REMAIN GUSTY NEAR RIDGE TOPS WITH UPPER JET OVERHEAD. IN ADDITION...THE APPROACHING SHORTWAVE ALOFT AND ASSOCIATED MOISTURE AND LIFT COULD RESULT IN A FEW DRY THUNDERSTORMS. AT THIS TIME IT APPEARS ANY STORMS WOULD BE ISOLATED DUE TO LITTLE IF ANY INSTABILITY...BUT WILL CONTINUE TO MONITOR. ...SRN CA DESERTS... PRESSURE GRADIENT WILL INCREASE BETWEEN MARINE LAYER AND HEAT LOW ACROSS THE MOJAVE DESERT...RESULTING IN GUSTY WINDS FROM THE ANTELOPE VALLEY INTO OWENS AND DEATH VALLEYS. SUSTAINED SWLY WINDS OF 20 MPH APPEAR LIKELY WITH HIGHER GUSTS WITH MODERATELY LOW RH OF 10-15 PERCENT. ..JEWELL.. 08/04/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...