Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic

Click for Day 1 FireWX Areal Outline Product

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 300704
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0204 AM CDT TUE SEP 30 2008
   
   VALID 301200Z - 011200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NRN NV...CNTRL AND ERN
   OR...CNTRL AND WRN ID...FAR NWRN UT...
   
   ...SYNOPSIS...
   A STRONG UPPER RIDGE WILL CONTINUE TO DOMINATE THE WESTERN
   STATES...WITH WIDESPREAD HOT AND DRY WEATHER. TEMPERATURES WILL BE
   NEAR 10 TO 15 DEGREES ABOVE CLIMATOLOGICAL NORMALS FOR MANY
   LOCATIONS BENEATH THE STRONGER SUBSIDENCE AND DRIER AIR.
   
   MEANWHILE...A SHORT WAVE TROUGH CONTINUES TO TRAVERSE NWWD ALONG THE
   WRN PERIPHERY OF THE UPPER RIDGE. MID LEVEL MOISTURE INCREASE FROM
   THE SOUTH IN COMBINATION WITH THE SHORT WAVE WILL SUPPORT DRY
   THUNDERSTORM DEVELOPMENT...MAINLY ACROSS PORTIONS OF THE PACIFIC
   NORTHWEST...AS LOW LEVELS REMAIN HOT AND DRY.
   
   ELSEWHERE...A LARGE UPPER TROUGH WILL AMPLIFY OVER THE GREAT LAKES
   AND OH VALLEY REGION...PUSHING A COOL AND DRY AREA OF HIGH PRESSURE
   SWD OUT OF THE PLAINS AND INTO THE LOWER MS VALLEY/GULF COAST
   REGION. ALTHOUGH RELATIVE HUMIDITIES ARE GENERALLY EXPECTED TO
   REMAIN ABOVE CRITICAL THRESHOLDS...GUSTY NWLY WINDS WILL DEVELOP.
   
   ...CRITICAL FIRE WEATHER AREA - PORTIONS OF NRN NV...CNTRL AND ERN
   OR...CNTRL AND WRN ID...FAR NWRN UT...
   
   PRIMARY CONDITIONS: ISOLATED TO SCATTERED DRY THUNDERSTORMS...LOW RH
   
   THE STRONG UPPER RIDGE IS BEGINNING TO SHIFT EWD...AND WILL
   GRADUALLY BEGIN TO WEAKEN AHEAD OF THE NEXT AREA OF LOW
   PRESSURE...SEEN CLEARLY ON SATELLITE IMAGERY THIS MORNING ROUGHLY
   NEAR 35N AND 140W. AHEAD OF THIS AND ON THE WRN PERIPHERY OF THE
   RIDGE...A SHORT WAVE TROUGH IS TRAVERSING NWD...WITH A VORT MAX NEAR
   THE SRN NV/CA BORDER AND A SEPARATE MAX NEAR THE NRN CA/NWRN NV
   BORDERS. MID LEVEL MOISTURE HAS GRADUALLY BEEN INCREASING FROM THE
   S...EVIDENCED ON GOES PWAT...AND WILL CONTINUE TODAY IN DEEP SLY
   FLOW.
   
   WHILE FORECAST INSTABILITY WAS SOMEWHAT LIMITED IN DETERMINISTIC
   MODEL FORECASTS YESTERDAY...THESE FORECASTS WERE NOT NECESSARILY
   REPRESENTATIVE...AS QUITE A BIT OF LIGHTNING ACTIVITY WAS RECORDED.
   A SIMILAR SCENARIO IS EXPECTED TODAY. THUNDERSTORMS WILL ONCE AGAIN
   INITIATE IN ASSOCIATION WITH THE TWO VORT CENTERS...WITH THE BEST
   JUXTAPOSITION OF GREATER MOISTURE/INSTABILITY POSSIBLE OVER THE
   HIGHER TERRAIN OF N/CNTRL NV. THUNDERSTORMS WILL VARY IN COVERAGE
   FROM ISOLD TO SCATTERED...ALTHOUGH GIVEN DRY CONDITIONS IN LOW
   LEVELS AND HOT TEMPERATURES...NEAR 10 TO 15 DEGREES ABOVE
   NORMAL...EXPECT LITTLE PRECIPITATION WITH THESE STORMS.
   
   ...LOWER MS/TN VALLEYS...GULF COAST STATES...
   HIGH PRESSURE WILL BE DRIVEN IN BY THE STRONG UPPER TROUGH TO THE
   N...AND WILL RESULT IN LOCALLY GUSTY WINDS AND LOW RH. SUSTAINED NW
   WINDS NEAR 15 MPH WITH HIGHER GUSTS ARE EXPECTED OVER SERN MO/NERN
   AR AND WRN KY/TN WHERE DROUGHT PERSISTS AND LITTLE RAINFALL HAS BEEN
   RECEIVED RECENTLY. FARTHER SE...WEAKER WINDS NEAR 10 MPH WILL OCCUR
   OVER THE GULF COAST STATES. ALTHOUGH MINIMUM RELATIVE HUMIDITIES MAY
   ONLY BRIEFLY DROP INTO THE 30S...A MARGINAL CRITICAL THREAT WILL
   EXIST IN THE DRIEST AREAS SUCH AS WRN KY/TN AND FAR SERN MO/NERN AR.
   
   ..HURLBUT.. 09/30/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      
Day 2 Fire Weather Forecast graphic

Click for Day 2 FireWX Areal Outline Product

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 300758
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0258 AM CDT TUE SEP 30 2008
   
   VALID 011200Z - 021200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   THE UPPER RIDGE IN THE WEST WILL GRADUALLY SHIFT EWD AND WEAKEN AS
   THE NEXT UPPER TROUGH BEGINS TO MOVE ONSHORE. STRONGER SLY WINDS
   WILL OVERSPREAD COASTAL AREAS OF NRN CA/SWRN OR AHEAD OF A COLD
   FRONT...WITH SUSTAINED SPEEDS NEAR 20 MPH AND GUSTS UP TO 30 MPH AT
   LOWER ELEVATIONS. HOWEVER...AT THE MOMENT IT APPEARS RELATIVE
   HUMIDITIES WILL BE SOMEWHAT MARGINAL...AND AREAL COVERAGE OF STRONG
   WINDS IS NOT EXPECTED TO BE VERY WIDESPREAD. 
   
   FARTHER E...DRY NWLY FLOW WILL CONTINUE OVER THE SERN STATES WITH
   HIGH PRESSURE BUILDING IN FROM THE NW AND WITH A STRONG UPPER TROUGH
   JUST TO THE N. ALTHOUGH NWLY WINDS NEAR 10 TO 15 MPH WITH HIGHER
   GUSTS WILL BE LIKELY...COOLER TEMPERATURES WILL KEEP MINIMUM
   RELATIVE HUMIDITIES ABOVE CRITICAL THRESHOLDS.
   
   ..HURLBUT.. 09/30/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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