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 191631
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1131 AM CDT THU AUG 19 2010
   
   VALID 191700Z - 201200Z
   
   ...NO CRITICAL AREAS...
   
   ...A PORTION OF FAR N-CNTRL MT...
   WITH A MODERATELY TIGHT LOW-LEVEL PRESSURE GRADIENT BETWEEN A
   CYCLONE OVER SWRN SASKATCHEWAN AND AN ANTICYCLONE OVER THE NERN
   PACIFIC...WLY DOWNSLOPE FLOW WILL AGAIN PROMOTE ABOVE-NORMAL
   TEMPERATURES AND DRY CONDITIONS IN THE LEE OF THE NRN ROCKIES.
   AFTERNOON TEMPERATURES WILL REACH INTO THE MIDDLE TO UPPER
   80S...WITH RH VALUES BECOMING LOW /NEAR 15 PERCENT/. ONGOING
   SUSTAINED SURFACE WINDS OF 20 TO 25 MPH /REF 16Z SURFACE OB AT
   KCTB/...WILL PERSIST THROUGH MUCH OF THE AFTERNOON. ALTHOUGH MOST OF
   THE AREA HAS RECEIVED ABOVE-NORMAL RAINFALL DURING THE PAST WEEK OR
   TWO...LESSER AMOUNTS ACROSS PORTIONS OF GLACIER AND TOOLE COUNTIES
   ALONG WITH DRY FUELS INDICATED BY LATEST NRCC OUTLOOK...SHOULD YIELD
   RATHER LOCALIZED CRITICAL CONDITIONS TODAY.
   
   ...PORTIONS OF THE COLUMBIA BASIN IN S-CNTRL WA/FAR N-CNTRL ORE...
   A MARGINAL FIRE WEATHER THREAT IS EXPECTED THIS AFTERNOON AS
   MODERATE WLY LOW/MID-LEVEL FLOW PERSISTS DOWNSTREAM OF THE CASCADES.
   ALTHOUGH THE LOW-LEVEL THERMAL PROFILE WILL BE SLIGHTLY COOLER
   COMPARED TO YESTERDAY...MORNING MODEL FORECASTS SUPPORT SURFACE RH
   VALUES FALLING TO BETWEEN 15 AND 25 PERCENT AS TEMPERATURES WARM
   INTO THE MIDDLE 80S TO LOWER 90S. SUSTAINED SURFACE WINDS SHOULD
   LARGELY AVERAGE AROUND 15 MPH...BUT WILL BE LOCALLY STRONGER WHERE
   TERRAIN ENHANCEMENT IS FAVORABLE.
   
   ..GRAMS.. 08/19/2010
   
   .PREV DISCUSSION... /ISSUED 0158 AM CDT THU AUG 19 2010/
   
   ...SYNOPSIS...
   A WEAK UPPER TROUGH IN THE NRN GREAT BASIN WILL WEAKEN AND QUICKLY
   PROGRESS EWD TO THE UPPER MS VALLEY OVER NIGHT. MEANWHILE...AN UPPER
   TROUGH DEVELOPING OVER COASTAL BRITISH COLUMBIA WILL STRENGTHEN WLY
   FLOW OVER WA/NRN ID AND INTO WRN MT THIS AFTERNOON/EVENING. THIS
   WILL LEAD TO A MARGINAL FIRE THREAT IN DOWNSLOPE AREAS OF THE
   CASCADES AND THE LEE OF THE N ROCKIES OF WRN MT WHERE RELATIVE
   HUMIDITIES WILL FALL INTO THE UPPER TEENS AS SUSTAINED WIND SPEEDS
   REACH 15 TO 20 MPH...WITH OCCASIONALLY STRONGER GUSTS.
   
   FARTHER E...A SERIES OF EWD MOVING UPPER DISTURBANCES WILL INFLUENCE
   WET THUNDERSTORM DEVELOPMENT FROM THE SOUTHWEST NWD/NEWD INTO THE
   CNTRL/NRN PLAINS...AND THE UPPER MS VALLEY. A STRONGER UPPER TROUGH
   IN THE EAST WILL SHIFT OFF THE ATLANTIC COAST...WITH WET
   THUNDERSTORMS EXPECTED OVER THE GREAT LAKES...NORTHEAST...MID
   ATLANTIC AND THE SOUTHEAST. ELSEWHERE...LIGHT WINDS AND/OR RELATIVE
   HUMIDITIES ABOVE CRITICAL THRESHOLDS WILL HINDER THE FIRE THREAT.
   
   ...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 190819
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0319 AM CDT THU AUG 19 2010
   
   VALID 201200Z - 211200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   A STRONG UPPER TROUGH WILL BUILD ALONG THE PACIFIC COAST...WITH
   WINDS ALOFT INCREASING OVERNIGHT OVER THE WESTERN STATES...THOUGH
   STABLE CONDITIONS AT THE SURFACE WILL LIMIT THESE STRONGER WINDS
   FROM MIXING DOWNWARD UNTIL D3. MEANWHILE...AN UPPER RIDGE WILL SHIFT
   EWD INTO THE CNTRL STATES...AND A WEAK UPPER TROUGH WILL MOVE INTO
   THE GREAT LAKES REGION. WET THUNDERSTORMS FROM THE SOUTHWEST THROUGH
   THE CNTRL PLAINS AND NEWD INTO THE UPPER MS VALLEY...IN ADDITION TO
   STORMS IN THE SOUTHEAST...WILL LIMIT THE FIRE THREAT ACROSS A BROAD
   AREA. ELSEWHERE...LIGHT WINDS AND/OR RELATIVE HUMIDITIES ABOVE
   CRITICAL THRESHOLDS WILL TEMPER THE THREAT AS WELL.
   
   ..HURLBUT.. 08/19/2010
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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