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 040751
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0251 AM CDT MON SEP 04 2006
   
   VALID 041200Z - 051200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   HIGHLY AMPLIFIED UPPER-LEVEL PATTERN WILL FEATURE A LARGE TROUGH
   OVER THE MID-MS RIVER VALLEY...A RIDGE ACROSS THE NRN ROCKIES/HIGH
   PLAINS...AND A WEAK TROUGH LIFTING NWD ACROSS THE PACIFIC NW. THE
   LATTER OF WHICH WILL HELP MAINTAIN WEAK SLY FLOW IN THE
   MID-LEVELS...BRINGING ADDITIONAL MOISTURE SLOWLY NWD ACROSS THE
   ERN/NRN GREAT BASIN.
   
   ...NERN NV/NRN UT/FAR SRN ID...
   WIDELY SCATTERED DRY TSTMS ARE EXPECTED LATE THIS AFTERNOON...MAINLY
   IN HIGHER TERRAIN AREAS...AS SUFFICIENT MID-LEVEL MOISTURE LIES ATOP
   A DRY LOW-LEVEL AIR MASS. AFTERNOON DEVELOPMENT WILL BE LARGELY TIED
   TO DAYTIME HEATING/OROGRAPHIC LIFT. RELATIVELY WARM UPPER-LEVEL
   TEMPERATURES AND WEAK FLOW/STORM MOVEMENT ARE EXPECTED TO LIMIT
   INSTABILITY AND COVERAGE.
   
   ...ERN ORE/CNTRL ID/FAR SWRN MT/EXTREME SERN WA...
   AN UPPER-LEVEL TROUGH FROM NERN CA NWWD TO SWRN WA WILL MOVE N/NE
   TODAY. DIFFLUENT FLOW ALOFT AHEAD OF THIS FEATURE WILL CONTRIBUTE TO
   LARGE-SCALE LIFT AND DRY TSTMS. ISOLATED TSTM ACTIVITY HAS BEEN
   ONGOING EARLY THIS MORNING ACROSS PORTIONS OF THE UMATILLA RANGE IN
   ORE. ALTHOUGH MID-LEVEL MOISTURE HAS INCREASED OVER THE PAST 24
   HOURS PER OBSERVED SOUNDINGS...IT SHOULD REMAIN RELATIVELY MEAGER
   COMPARED TO AREAS FURTHER S. THUS COVERAGE IS EXPECTED TO REMAIN
   ISOLATED TO WIDELY SCATTERED...AND ACROSS HIGHER TERRAIN AREAS WHERE
   OROGRAPHIC LIFT IS MAXIMIZED. GUSTY AND ERRATIC OUTFLOW WINDS WILL
   ACCOMPANY THE TSTMS AND COULD AFFECT ONGOING LARGE FIRES IN THE
   REGION.
   
   ..GRAMS.. 09/04/2006
   
   ...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 040902
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0402 AM CDT MON SEP 04 2006
   
   VALID 051200Z - 061200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A LARGE UPPER-LEVEL TROUGH WILL AMPLIFY ACROSS THE MID-MS AND OH
   RIVER VALLEYS. THE NRN ROCKIES UPPER RIDGE WILL RETROGRADE WWD...AS
   AN IMPULSE ACROSS THE PACIFIC NW PIVOTS E/SEWD. CONSEQUENTLY...THE
   CENTER OF THE RIDGE SHOULD BE ACROSS CA AND GREAT BASIN. GENERALLY
   LIGHT SURFACE FLOW WILL CONTINUE ACROSS THE NWRN CONUS.
   HOWEVER...RESIDUAL MID-LEVEL MOISTURE BENEATH THE RIDGE SHOULD LEAD
   TO ISOLATED/WIDELY SCATTERED DRY TSTMS ACROSS MUCH OF THE ERN GREAT
   BASIN/NRN ROCKIES.
   
   ...NERN NV/FAR ERN ORE/MUCH OF ID/NRN UT/SWRN MT/FAR WRN WY...
   A DRY TSTM THREAT SHOULD CONTINUE FROM DAY 1...SHIFTING SLOWLY EWD
   TO THE S OF A MID-LEVEL IMPULSE EXPECTED TO BE CROSSING THE MT
   ROCKIES. MODEL FORECAST SOUNDINGS INDICATE DRY LOW-LEVEL CONDITIONS
   WILL CONTINUE BENEATH MODEST MID-LEVEL MOISTURE...WITH TOTAL COLUMN
   PRECIPITABLE WATER AROUND A HALF INCH OR LESS. WITH DAYTIME
   HEATING...AN INVERTED-V TYPE THERMODYNAMIC STRUCTURE SHOULD
   DEVELOP...ALLOWING GUSTY AND ERRATIC DOWNDRAFT WINDS TO ACCOMPANY
   TSTMS. LIMITED INSTABILITY AND RELATIVELY WEAK FLOW SHOULD KEEP
   COVERAGE FROM ISOLATED TO WIDELY SCATTERED AT BEST...MAINLY
   AFFECTING HIGHER TERRAIN LOCALES.
   
   ..GRAMS.. 09/04/2006
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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