Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 070912
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0412 AM CDT THU APR 07 2005
   
   VALID 071200Z - 081200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   BEHIND AN UPPER TROUGH THAT WILL MOVE THROUGH THE SERN
   STATES...UPPER RIDGING WILL SHIFT EWD ACROSS THE PLAINS PROVIDING
   FOR A WARMING TREND TO THIS REGION. SWLY MID LEVEL FLOW WILL
   INCREASE ACROSS THE NRN ROCKIES ALLOWING FOR STRENGTHENING OF THE
   LEE TROUGH OVER THE CENTRAL/NRN HIGH PLAINS. SSWLY SFC WINDS WILL
   INCREASE OVER MUCH OF THE NRN HI PLAINS ON EITHER SIDE OF THIS LEE
   TROUGH IN RESPONSE TO AN INCREASING PRESSURE GRADIENT. THE
   COMBINATION OF MIN RH READINGS OVER THIS REGION LESS THAN 20 PERCENT
   AND SUSTAINED WINDS FROM 15-20 MPH WILL PRODUCE NEAR CRITICAL FIRE
   WEATHER CONDITIONS.
   
   FARTHER WEST...ANOTHER SYSTEM WILL MOVE FROM THE WEST COAST INTO THE
   GREAT BASIN THROUGH THE PERIOD. AHEAD OF AN ASSOCIATED COLD
   FRONT...SWLY WINDS WILL INCREASE OVER MUCH OF THE GREAT BASIN AND 
   FOUR CORNERS REGION. DESPITE SUSTAINED WINDS/RH READINGS AT CRITICAL
   LEVELS...SPRING GREENUP/ABOVE NORMAL LONG TERM PRECIPITATION IN THE
   REGION WILL ACT TO PRECLUDE A CRITICAL FIRE WEATHER THREAT.
   
   ...NRN PLAINS...
   AS THE UPPER RIDGE OVER THE REGION BREAKS DOWN AND SHIFTS EWD INTO
   THE PLAINS...SWLY MID LEVEL FLOW WILL INCREASE OVER THE NRN ROCKIES
   THROUGH THE PERIOD. THE RESULT AT LOW LEVELS WILL BE TO AID IN
   STRENGTHENING THE SFC LEE TROUGH OVER THE REGION. TO THE EAST OF
   THIS TROUGH...STRENGTHENING PRESSURE GRADIENT BETWEEN THE TROUGH AND
   RETREATING SFC HIGH CENTERED OVER THE UPPER MIDWEST WILL AID IN
   SUSTAINED SELY WINDS FROM 15 TO 20 MPH OVER THE WRN/CENTRAL PORTIONS
   OF THE DAKOTAS...ERN MT/ERN WY. WARMING SFC TEMPERATURES IN THE
   70S/LOWER 80S COMBINED WITH DEWPTS IN THE 20S/LOWER 30S WILL SUPPORT
   MIN RH READINGS IN THE 15-25 PERCENT RANGE. DESPITE THESE LOW RH
   VALUES...SUSTAINED WINDS ARE FCST TO BE JUST UNDER CRITICAL LEVELS
   PRECLUDING A CRITICAL FIRE WEATHER THREAT.
   
   ..CROSBIE.. 04/07/2005
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 070917
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0417 AM CDT THU APR 07 2005
   
   VALID 081200Z - 091200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE SRN ROCKIES...SRN
   HIGH PLAINS...
   
   ...SYNOPSIS...
   A STRONG UPPER TROUGH WILL CONTINUE TO DEEPEN OVER THE WRN
   CONUS...AS ANOTHER SHORTWAVE DIGS ALONG THE WEST COAST THROUGH THE
   PERIOD. THE NET RESULT AT THE SFC WILL BE AN INCREASE IN THE SSWLY
   WINDS ALONG IN LOWER ELEVATIONS ON EITHER SIDE OF THE LEE TROUGH
   SITUATED ALONG THE HIGH PLAINS...AND INCREASING WINDS IN THE HIGHER
   ELEVATIONS OF THE SRN/CENTRAL ROCKIES. OVER MUCH OF THE
   ROCKIES...TEMPERATURES WILL BE SUFFICIENTLY COOL THAT CRITICAL FIRE
   WEATHER CONDITIONS WILL NOT BE MET DESPITE THE STRONG WINDS.
   HOWEVER...WARMER TEMPERATURES SITUATED ALONG THERMAL RIDGE AXIS
   EXTENDING FROM THE SRN ROCKIES NEWD ALONG THE LEE TROUGH INTO THE
   SRN HIGH PLAINS WILL AID IN MIN RH READINGS LESS THAN 15 PERCENT.
   COMBINED WITH SUSTAINED SFC WINDS FROM 20-25 MPH A CRITICAL FIRE
   WEATHER THREAT WILL EXIST OVER THIS REGION. TO THE EAST OF THE LEE
   TROUGH FROM PORTIONS OF SWRN TX INTO ERN CO/WRN KS...SLIGHTLY HIGHER
   RH VALUES FROM 20-30 PERCENT WILL PRECLUDE A CRITICAL FIRE WEATHER
   THREAT FROM OCCURRING. ELSEWHERE ACROSS THE NATION...LIGHT WINDS
   AND/OR RECENT PRECIPITATION WILL RESULT IN NO OTHER FIRE WEATHER
   CONCERNS.
   
   ...CRITICAL FIRE WEATHER AREA 1 - SERN AZ...SRN/CENTRAL NM EWD INTO
   FAR WRN TX...
   
   PRIMARY CONDITIONS: SUSTAINED WINDS FROM 20 TO 25 MPH WITH GUSTS
   OVER 30 MPH...MIN RH READINGS FROM 10-15 PERCENT...EXTREME FIRE
   DANGERS AT LOWER ELEVATIONS
   
   APPROACHING STRONG UPPER TROUGH WILL AID IN INCREASING WINDS FIELDS
   OVER THE REGION. IN ADDITION...STRONG MIXING TO THE WEST OF A LEE
   TROUGH WITH NEARLY DRY ADIABATIC LAPSE RATES THROUGH THE LOWEST 3
   KM/S WILL AID IN MOMENTUM TRANSFER OF THE STRONGER WINDS TO THE SFC.
   SUSTAINED WINDS FROM 20 TO 25 MPH WILL BE COMMON. EXTREMELY HIGH
   FIRE DANGERS WERE PRESENT OVER MUCH OF THE REGION DUE TO LITTLE 
   RECENT PRECIPITATION. LONG TERM LACK OF DROUGHT CONDITIONS WILL
   FAVOR MAINLY A WIND DRIVEN GRASS FIRES THREAT AS THE STRONG WINDS
   COMBINE WITH MIN RH READINGS FROM 10-15 PERCENT.
   
   ...CENTRAL/NRN HIGH PLAINS...
   STRONG SLY WINDS FROM 20-25 MPH WILL EXIST OCCUR OVER THE REGION AS
   A STRONG PRESSURE GRADIENT REMAINS BETWEEN LEE TROUGH AND SFC HIGH
   PRESSURE OVER THE GREAT LAKES. SLIGHTLY HIGHER DEWPTS THAN ON DAY
   ONE WILL LEAD TO MIN RH READINGS FROM 20-30 PERCENT. IN ADDITION
   ISOLATED THUNDERSTORMS MAY DEVELOP ALONG THE LEE TROUGH DURING THE
   AFTERNOON HOURS...FROM ERN CO NWD INTO WRN SD. HIGH LFC AROUND 10
   KFT AGL AND PWAT VALUES LESS THAN 0.50 INCH SUGGEST THAT THESE
   STORMS WILL INITIALLY BE DRY.
   
   ..CROSBIE.. 04/07/2005
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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