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 070947
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0347 AM CST TUE NOV 07 2006
   
   VALID 071200Z - 081200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR MTNS/CANYONS OF SRN CA THROUGH THE
   MORNING...
   
   ...SYNOPSIS...
   THE UPPER RIDGE WILL BREAKDOWN OVER THE WEST TODAY IN ADVANCE OF AN
   UPPER TROUGH THAT MOVE EWD FROM THE ERN PACIFIC INTO THE PAC NW/NRN
   ROCKIES. AHEAD OF THIS UPPER TROUGH...SFC HIGH PRESSURE OVER THE 
   GREAT BASIN AND OFFSHORE GRADIENTS OVER SRN CA WILL WEAKEN THROUGH
   THE PERIOD. HOWEVER...VERY WARM TEMPERATURES WILL REMAIN OVER MUCH
   OF THE SOUTHWEST AND SRN CA. MODERATE WINDS AND VERY LOW RH READINGS
   WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS THIS MORNING OVER THE
   HIGHER TERRAIN OF SRN CA. WITH THE CESSATION OF THE OFFSHORE
   GRADIENT...WINDS WILL SHIFT TO WLY TONIGHT LEADING TO HIGHER RH
   READINGS. ELSEWHERE ACROSS THE NATION...WELL ABOVE NORMAL
   TEMPERATURES WILL AGAIN OCCUR OVER THE NRN/CENTRAL PLAINS WHILE
   DEVELOPING SWD INTO THE SRN PLAINS. THE BREAKDOWN OF THE UPPER RIDGE
   OVER THE ROCKIES AND INCREASING WLY FLOW WILL SUPPORT INCREASING
   SWLY SFC WINDS OVER THE CENTRAL/NRN HIGH PLAINS. HOWEVER MIN RH
   READINGS IN THIS REGION WILL REMAIN HIGH ENOUGH /ABOVE 25 PERCENT/
   TO PRECLUDE CRITICAL FIRE WEATHER CONDITIONS.
   
   ...CRITICAL FIRE WEATHER AREA - MTNS/CANYONS OF SRN CA THROUGH THE
   MORNING...
   
   PRIMARY CONDITIONS: SUSTAINED WINDS FROM 20-25 MPH WITH GUSTS UP TO
   40 MPH...RH READINGS AROUND 15 PERCENT
   
   EARLY MORNING RAWS/MESOWEST DATA SHOWS SURPRISINGLY STRONG WIND
   GUSTS /40 MPH/ GIVEN RELATIVELY MODEST OFFSHORE PRESSURE GRADIENT /6
   MB/. RECENT RADAR VAD WIND PROFILE DATA MAY INDICATE THE REASON FOR
   THESE MODERATE WINDS.  A 20-25 KT NELY WIND MAX BETWEEN 1-2 KM
   EXISTED OVER THE HIGH DESERTS/SRN NV ON THE SERN PERIPHERY OF THE
   850 MB RIDGE CENTERED OVER CENTRAL NV. THESE MODERATE LOW LEVEL
   WINDS WERE ALSO EVIDENT PER CHAFF ECHO RETURNS OVER THE MOJAVE
   DESERT. COMBINED WITH DIURNAL EFFECTS...MODERATE SFC WIND FIELDS
   OVER THE HIGHER TERRAIN OF SRN CA SHOULD REMAIN IN PLACE /OR LOCALLY
   STRENGTHEN/ THROUGH THE REST OF THE EARLY MORNING HRS. SINCE WINDS
   SHOULD REMAIN MODERATE THROUGH THE REMAINDER OF THE MORNING HRS AND
   RH READINGS WILL AGAIN BE VERY LOW...A CRITICAL OUTLOOK IS BEING
   ISSUED. WINDS SHOULD DIMINISH TO LESS THAN 20 MPH BY EARLY-MID
   AFTERNOON...LEADING TO AN END OF CRITICAL CONDITIONS. HOWEVER MIN RH
   READINGS WILL AGAIN BE LOW /6-10 PERCENT/ IN INLAND LOCATIONS ALL
   AFTERNOON.
   
   ..CROSBIE.. 11/07/2006
   
   ...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 070948
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0348 AM CST TUE NOV 07 2006
   
   VALID 081200Z - 091200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   THE UPPER RIDGE OVER THE SW WILL SHIFT EWD INTO THE SRN PLAINS 
   TOMORROW AS ANOTHER UPPER TROUGH MOVES INTO THE WEST COAST.  ONSHORE
   FLOW WILL STRENGTHEN OVER SRN CA AS A RESULT OF THIS APPROACHING
   UPPER SYSTEM. THE RESULT WILL BE A MARKED INCREASE IN RH READINGS
   AND COOLING OF TEMPERATURES IN INTERIOR VALLEYS/MTNS OF SRN CA. SWLY
   WINDS WILL INCREASE OVER PORTIONS OF THE HIGH DESERT AND LOWER
   COLORADO RIVER VALLEY AHEAD OF THIS SYSTEM AND IT/S ASSOCIATED COLD
   FRONT. ELSEWHERE...THE LEAD UPPER SYSTEM WILL MOVE EWD ALONG
   CANADIAN BORDER. THIS SYSTEM WILL SUPPORT A SWD MOVING COLD FRONT
   THROUGH THE NRN PLAINS ACCOMPANIED BY MODERATE NWLY WINDS. VERY WARM
   TEMPERATURES WILL BE PRESENT SOUTH OF THIS FRONT OVER THE
   SRN/CENTRAL PLAINS WITH NEAR RECORD HIGH TEMPERATURES POSSIBLE.
   ALTHOUGH SWLY WINDS ARE FCST TO INCREASE OVER THE SRN HIGH
   PLAINS...THEY SHOULD REMAIN BELOW CRITICAL LEVELS.
   
   ...NRN PLAINS...
   IN THE WAKE OF A COLD FRONT...NWLY WINDS WILL AVERAGE 20-25 MPH WITH
   GUSTS OVER 35 MPH. MUCH COOLER TEMPERATURES ARE EXPECTED TO
   INITIALLY LAG THE FRONT...WITH READINGS IN THE 60S/LOWER 70S IN SD
   AND PORTIONS OF NRN NEB. HOWEVER DWPTS ARE NOT EXPECTED TO BE VERY
   LOW /35-40 DEG F/. THUS MIN RH READINGS SHOULD REMAIN HIGH ENOUGH
   /ABOVE 25 PERCENT/ TO PRECLUDE A CRITICAL FIRE WEATHER THREAT.
   
   ...LOWER CO RIVER VALLEY...
   AHEAD OF THE UPPER TROUGH AND COLD FRONT MOVING THROUGH CENTRAL/NRN
   CA...SSWLY WINDS WILL INCREASE OVER THE AREA DURING THE AFTERNOON.
   ABOVE NORMAL TEMPERATURES IN THE LOWER 90S AND RH READINGS AROUND 15
   PERCENT CAN BE EXPECTED. THE STRONGEST MID LEVEL WIND FIELDS SHOULD
   BE LOCATED POST FRONTAL AND ALONG WITH A MARGINAL PRESSURE
   GRADIENT...LIMIT SUSTAINED SFC WINDS TO LESS THAN 20 MPH.
   
   ...SRN HIGH PLAINS...
   SWLY WINDS WILL AVERAGE FROM 10-15 MPH WITH GUSTS UP TO 20 MPH /IN
   THE GUADALUPE MTNS/ DURING THE AFTERNOON AS THE PRESSURE GRADIENT
   WILL REMAIN RELATIVELY WEAK. UPPER RIDGING AND DOWNSLOPE COMPONENT
   TO THE LOW LEVELS WILL SUPPORT VERY WARM TEMPERATURES IN THE 80S.
   
   ..CROSBIE.. 11/07/2006
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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