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 220732
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0232 AM CDT FRI MAY 22 2009
   
   VALID 221200Z - 231200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   LATEST UPPER AIR RAOBS AND EARLY MORNING SATELLITE IMAGERY DENOTE A
   MEAN UPPER LOW INVOF THE SWRN U.S. DESERT/SONORA MEXICO WITH ANOTHER
   UPPER LOW OVER THE E-CNTRL GULF OF MEXICO.  THESE AFOREMENTIONED
   FEATURES ARE EXPECTED TO MEANDER DURING THE FORECAST PERIOD AS A
   ZONAL FLOW REGIME AND BELT OF STRONG WLY/S ALOFT REMAINS CONFINED TO
   THE U.S.-CANADIAN BORDER.  AT THE SURFACE...A WEAK LOW PRESSURE AREA
   WILL REMAIN OVER THE LOWER CO RIVER VALLEY WITH ISOLD TO WIDELY
   SCATTERED SHOWERS/TSTMS POSSIBLE OVER PARTS OF THE GREAT BASIN EWD
   INTO THE PLAINS.  A COLD FRONT WILL MOVE SEWD OVER NEW ENGLAND AND
   INTO THE NWRN ATLANTIC BY FRIDAY EVENING BRINGING WITH IT
   COOLER/DRIER AIR ACCOMPANIED BY MODEST POST-FRONTAL WIND GUSTS.
   
   ...NRN NV/EXTREME SWRN ID...
   EARLY MORNING GPS H2O DATA OVER THE GREAT BASIN SHOWS HIGHER QUALITY
   MOISTURE OOZING NWD OVER THE CO RIVER VALLEY CHARACTERIZED BY
   PRECIPITABLE WATER IN EXCESS OF 0.75 INCH.  A RELATIVELY DRY AIRMASS
   WILL REMAIN ON THE NRN PERIPHERY OF UPPER LOW FEATURE OVER THE SWRN
   U.S.  FORECAST SOUNDINGS SHOW STEEP LAPSE RATES AND SUFFICIENT
   MID-LEVEL MOISTURE CONDUCIVE FOR MODEST CONVECTIVE INSTABILITY. 
   DIABATIC HEATING IN ADDITION TO A SUBTLE WEAK DISTURBANCE WILL
   PROBABLY AID IN PERHAPS ISOLD--MAINLY DRY TSTMS OVER THE AREA DURING
   THE AFTERNOON/EARLY EVENING.  ONLY MARGINALLY SUPPORTIVE FUELS AND
   EXPECTED LIMITED NATURE OF THREAT PRECLUDES A CRITICAL ISSUANCE. 
   
   ...NEW ENGLAND...
   AS TEMPS WARM AHEAD OF A COLD FRONT...RH MAY FALL INTO THE 30S OVER
   PARTS OF NEW ENGLAND.  LATEST MODEL FORECAST SOUNDINGS SHOW
   RELATIVELY LAX BOUNDARY LAYER WINDS...SUGGESTING RATHER WEAK
   SUSTAINED SPEEDS /AOB 15 MPH/ WILL BE COMMON...BUT HIGHER GUSTS MAY
   OCCUR.
   
   ..SMITH.. 05/22/2009
   
   ...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 220837
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0337 AM CDT FRI MAY 22 2009
   
   VALID 231200Z - 241200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   STRONG UPPER FLOW WILL GENERALLY REMAIN N OF THE U.S.-CANADA BORDER
   DURING THE D2 PERIOD.  A WEAK UPPER TROUGH WILL APPROACH THE NRN
   PART OF THE GREAT BASIN AS IT OVERSPREADS THE PACIFIC NW AND A WEAK
   CLOSED LOW WILL MEANDER OVER UT BY SATURDAY EVENING.  SHOWERS AND
   TSTMS WILL DEVELOP OVER A LARGE PART OF THE INTERMOUNTAIN WEST.
   
   ...SERN ORE/NWRN NV/SWRN ID...
   LATEST DETERMINISTIC AND ENSEMBLE OUTPUT INDICATE MID-LEVEL MOISTURE
   WILL CONTINUE TO SPREAD N AND NW OVER THE NRN GREAT BASIN. 
   MEANWHILE STRONG DAYTIME HEATING WILL RESULT IN STEEP BOUNDARY LAYER
   LAPSE RATES DEVELOPING OVER THE REGION AND COMBINE WITH INCREASING
   LARGE SCALE ASCENT ASSOCIATED WITH APPROACHING UPPER TROUGH AND
   OROGRAPHIC ENHANCEMENT TO INITIATE TSTMS.  NAM/GFS FORECAST
   SOUNDINGS GENERALLY SHOW PRECIPITABLE WATER AOB 0.60
   INCH...SUGGESTING THE POTENTIAL EXISTS FOR A DRY ISOLD TSTM THREAT. 
   A CRITICAL HIGHLIGHT DOES NOT APPEAR WARRANTED DUE TO LIMITED FUEL
   RECEPTIVENESS.
   
   ..SMITH.. 05/22/2009
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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