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 210901
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0401 AM CDT SAT JUN 21 2008
   
   VALID 211200Z - 221200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   THE UPPER PATTERN ACROSS THE COUNTRY WILL REMAIN DOMINATED BY A
   LARGE RIDGE CENTERED OVER THE SWRN STATES...AND AN UPPER LOW
   CENTERED OVER HUDSON/S BAY CANADA. BROAD NW FLOW AT MID LEVELS WILL
   RESIDE BETWEEN THESE TWO FEATURES SUPPORTING SCT TSTMS OVER MUCH OF
   THE HIGH PLAINS REGION AND ADJACENT ROCKY FRONT RANGE. ON THE WRN
   EDGE OF THIS TSTM POTENTIAL...ISOLATED DRY TSTMS WILL BE POSSIBLE
   OVER PORTIONS OF FAR WRN NM/SERN AZ. MEANWHILE...A SEPARATE
   SHORTWAVE TROUGH WILL MOVE ACROSS THE PAC NW/NRN ROCKIES AIDING IN A
   SLIGHT BREAKDOWN OF THE UPPER RIDGE OVER THE NRN ROCKIES/NRN GREAT
   BASIN. AHEAD OF THIS TROUGH...SCT TSTMS WILL OCCUR WITH SOME BEING
   DRY.
   
   ...ERN ORE/ERN WA..WRN ID...NRN NV...NRN CA AND FAR WRN MT...
   AHEAD OF A SEASONABLY STRONG SHORTWAVE TROUGH...MID LEVEL MOISTURE
   AND INSTABILITY HAVE PRODUCED ISOLATED TO SCT TSTMS OVER NWRN
   CA/SWRN ORE EARLY THIS MORNING. SOME OF THESE TSTMS ARE EXPECTED TO
   REMAIN DRY POSING A THREAT FOR LIGHTNING GENERATED FIRE STARTS.
   LATER TODAY...THIS SHORTWAVE WILL MOVE INTO THE INTERIOR PAC NW AND
   NRN GREAT BASIN. AS THIS OCCURS...SCT TSTMS ARE EXPECTED TO 
   INCREASE IN COVERAGE DUE TO DAYTIME HEATING/OROGRAPHIC INFLUENCES.
   FORECAST SOUNDINGS INDICATE THE POTENTIAL FOR DRY TSTMS INITIALLY.
   HOWEVER...STRENGTH OF THE FORCING SHOULD SUPPORT MOISTENING MID
   LEVELS...INCREASING PWAT VALUES AND A TRANSITION TO WET TSTMS DURING
   THE LATE AFTERNOON/EARLY EVENING. GIVEN THIS EXPECTED SCENARIO...A
   CRITICAL FIRE WEATHER OUTLOOK AREA IS NOT WARRANTED.
   
   ...FAR SERN AZ/WRN NM...
   ALONG THE WRN EDGE OF THE LOW-MID LEVEL MOISTURE /RESULTING FROM
   OVERNIGHT CONVECTION OVER ERN NM/...ISOLATED TO WIDELY SCT TSTMS ARE
   EXPECTED TO DEVELOP OVER THE HIGHER TERRAIN OVER FAR SERN AZ...WRN
   NM. ON THE WRN EDGE OF THIS MOISTURE...DRY/HOT BOUNDARY LAYER
   /TEMPERATURES AOA 100 DEG F AND DEWPTS AOB 30 DEG F/ WILL FAVOR HIGH
   CLOUD BASES /ABOVE 12 KFT AGL/. COMBINED WITH SUFFICIENT
   INSTABILITY...THERE EXISTS SOME POTENTIAL FOR DRY TSTMS.
   
   ...CA/SRN NV...
   VERY HOT TEMPERATURES WILL AGAIN BE PREVALENT OVER THE REGION TODAY.
   WITH THE PASSAGE OF THE UPPER TROUGH ACROSS THE PAC NW...ONSHORE
   FLOW WILL STRENGTHEN OVER NRN CA SUPPORTING A 5-10 DEG COOL DOWN
   OVER COASTAL VALLEYS. HOWEVER...INLAND AREAS WILL CONTINUE TO SEE
   NEAR RECORD HIGH TEMPERATURES AND LOW RH READINGS FROM 5-10
   PERCENT...WITH POOR RH RECOVERY OVERNIGHT IN HIGHER ELEVATIONS.
   FURTHER SOUTH...LITTLE TO NO ONSHORE FLOW WILL BE PRESENT OVER SRN
   CA...SUSTAINING HOT TEMPERATURES/LOW RH READINGS IN COASTAL VALLEYS
   AND CONSEQUENT VERY HIGH FIRE DANGER. ALTHOUGH MODERATE WLY WINDS
   WILL BE POSSIBLE NEAR THE SEA BREEZE FRONT OVER THE COASTAL VALLEYS
   OF NRN CA...IMPROVING RH READINGS WITH THE PASSAGE OF THIS BOUNDARY
   WILL PRECLUDE ANY CRITICAL FIRE WEATHER THREAT.
   
   ..CROSBIE.. 06/21/2008
   
   ...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 210904
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0404 AM CDT SAT JUN 21 2008
   
   VALID 221200Z - 231200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   AN UPPER TROUGH WILL MOVE ACROSS THE NRN ROCKIES/NRN GREAT BASIN
   TOMORROW. THIS WILL RESULT IN A CONTINUED BREAKDOWN OF THE UPPER
   RIDGE OVER THESE AREAS TOMORROW. ISOLATED/SCT DRY TSTMS WILL BE
   POSSIBLE OVER PORTIONS OF THE NRN GREAT BASIN AS A RESULT OF
   INCREASED LIFT AND MODERATE INSTABILITY OVER THIS REGION. ADDITIONAL
   ISOLATED DRY TSTMS WILL BE POSSIBLE OVER FAR ERN AZ/WRN NM ON THE
   WRN EDGE OF LOW-MID LEVEL MOISTURE. LOCALIZED GUSTY WINDS WILL BE
   FOUND OVER PORTIONS OF THE MOJAVE DESERT AS MID LEVEL FLOW
   STRENGTHENS AND THE PRESSURE GRADIENT INCREASES OFF THE CENTRAL CA
   COAST. INCREASING ONSHORE FLOW WILL SUPPORT A COOL DOWN OVER THE
   COASTAL VALLEYS OF SRN CA...BUT INTERIOR VALLEYS/MTNS OF CA WILL SEE
   TEMPERATURES REMAIN WELL ABOVE NORMAL ALONG WITH LOW RH READINGS
   LESS THAN 10 PERCENT.
   
   ...NRN GREAT BASIN...
   ISOLATED DRY TSTMS WILL BE POSSIBLE TOMORROW ON THE SRN EDGE OF A
   SEASONABLY STRONG UPPER TROUGH. DEEPLY MIXED/DRY BOUNDARY LAYER WILL
   SUPPORT HIGH CLOUD BASES ABOVE 12 KFT AGL. HOWEVER...WITH A
   RELATIVELY ISOLATED COVERAGE OF TSTMS EXPECTED /GIVEN WEAKER FORCING
   OVER THE REGION/ A CRITICAL FIRE WEATHER THREAT IS NOT ANTICIPATED.
   FURTHER NORTH...GREATER MID LEVEL FORCING WILL LIKELY SUPPORT SCT
   MAINLY WET TSTMS OVER THE NRN ROCKIES.
   
   ...SERN AZ/WRN NM...
   SIMILAR TO TODAY...WRN PROPAGATION OF THE LOW-MID LVL MOISTURE
   /SUPPORTED BY CONVECTIVE OUTFLOW ON DAY 1/ SHOULD SUPPORT ANOTHER
   DAY OF TSTMS OVER THE HIGHER TERRAIN. ERN EDGE OF THE HOT/DRY
   BOUNDARY LAYER WILL COEXIST WITH SOME OF THIS MOISTURE TO SUPPORT
   HIGH BASED MAINLY DRY TSTMS OVER THIS REGION. HOWEVER...LIMITED
   AREAL COVERAGE OF TSTMS WILL PRECLUDE A CRITICAL FIRE WEATHER
   THREAT.
   
   ...SERN CA...
   INCREASING HIGH PRESSURE OFF THE CENTRAL CA COAST /SUPPORTING
   INCREASING ONSHORE FLOW/ WILL SUPPORT MODERATE SWLY WINDS OVER THE
   HIGH DESERT OF SERN CA. HOWEVER THE DURATION OF STRONGEST WINDS /AOA
   20 MPH/ WILL LIKELY BE LIMITED TO LESS THAN 4 HRS DURING THE
   MID-LATE AFTERNOON. THUS A CRITICAL FIRE WEATHER THREAT IS NOT
   EXPECTED.
   
   ..CROSBIE.. 06/21/2008
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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