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 090850
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0350 AM CDT SUN SEP 09 2007
   
   VALID 091200Z - 101200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR WRN OREGON AND FAR SWRN WA...
   ...CRITICAL FIRE WEATHER AREA FOR W SLOPES OF NRN SIERRA...
   ...CRITICAL FIRE WEATHER AREA FOR CNTRL AND SRN UT...
   ...CRITICAL FIRE WEATHER AREA FOR NWRN CO AND NERN UT...
   
   ...SYNOPSIS...
   AN UPPER SHORTWAVE TROUGH WILL MOVE SEWD ACROSS THE NRN ROCKIES INTO
   THE ERN GREAT BASIN...BRINGING STRONG WINDS WITH A COLD FRONT AND
   ALSO SOME DRY THUNDERSTORMS TO UT AND NWRN CO. HIGH PRESSURE BEHIND
   THIS FRONT WILL CREATE LOCALLY CRITICAL WINDS OVER WRN OREGON AND
   NRN CA. MEANWHILE...A GENERAL UPPER RIDGE WILL PERSIST OVER THE SERN
   STATES WITH WARM AND DRY WEATHER OVER MUCH OF THE INTERIOR SE BUT
   WINDS WILL BE LIGHT.
   
   ...CRITICAL FIRE WEATHER AREA - WRN OREGON AND FAR SWRN WA...
   
   PRIMARY CONDITIONS: STRONG NELY WINDS...VERY LOW RH
   
   A THERMAL RIDGE/SFC PRESSURE TROUGH WILL DEEPEN W OF THE CASCADES
   THIS AFTERNOON WITH HIGH PRESSURE CREATING STRONG NELY WINDS.
   SUSTAINED WINDS SHOULD AVERAGE 15-25 MPH WITH GUSTS OVER 30 MPH. IT
   WILL BE WARMER AND DRIER THAN PREVIOUS DAY...WITH HIGHS NEAR 90 AND
   MIN RH IN THE TEENS. THE STRONG WINDS AND VERY LOW RH WILL CREATE
   VERY DANGEROUS FIRE CONDITIONS. WIND GUSTS WILL PERSIST OVERNIGHT
   ESPECIALLY IN THE HIGHER TERRAIN WITH POOR RH RECOVERY.
   
   ...CRITICAL FIRE WEATHER AREA - W SLOPES OF NRN SIERRA...
   
   PRIMARY CONDITIONS: INCREASING ELY WINDS AND LOW RH
   
   HIGH PRESSURE WILL CONTINUE TO FILTER SWD INTO THE GREAT BASIN
   BEHIND A COLD FRONT. MEANWHILE...A THERMAL RIDGE WILL SET UP DURING
   THE DAY OVER INTERIOR CA INTO WRN OREGON. THIS WILL CREATE A STRONG
   PRESSURE GRADIENT WHICH WILL BE ENHANCED AT NIGHT. E WINDS WILL
   INCREASE LATE TODAY INTO TONIGHT MAINLY IN THE FOOTHILLS AND W
   SLOPES OF THE SIERRA...WITH STRONG WIND GUSTS AND LOW RH. SOME AREAS
   WILL LIKELY SEE WINDS IN EXCESS OF 25-30 MPH.
   
   ...CRITICAL FIRE WEATHER AREA - CNTRL AND SRN UT...
   
   PRIMARY CONDITIONS: STRONG AND SHIFTING WINDS WITH DRY COLD FRONT
   AND LOW RH
   
   A COLD FRONT WILL SURGE SEWD ACROSS THE ERN GREAT BASIN
   TODAY...CAUSING WINDS TO SHIFT FROM SWLY TO NWLY INCREASING TO OVER
   20 MPH WITH HIGHER GUSTS. WHILE THE FRONT WILL BRING COOLER AIR TO
   NRN UT...PORTIONS OF CNTRL AND SRN UT WILL HAVE WARMER TEMPERATURES
   DUE TO LATER TIMING OF FRONT AND THUS RH NEAR 15 PERCENT AT PEAK
   HEATING. IN ADDITION...ISOLATED DRY THUNDERSTORMS MAY OCCUR OVER THE
   WASATCH AND S CNTRL MTNS LATE IN THE DAY.
   
   ...CRITICAL FIRE WEATHER AREA - NWRN CO AND NERN UT...
   
   PRIMARY CONDITIONS: SCATTERED DRY THUNDERSTORMS AND COLD FRONT
   PASSAGE
   
   A COLD FRONT WILL STRETCH FROM SWRN WY ACROSS NWRN CO AND ERN UT
   THIS AFTERNOON. AHEAD OF THE FRONT...IT WILL BE WARM AND DRY WITH
   TEMPERATURES MAINLY IN THE 80S AND RH IN THE TEENS. LIFT ALONG THE
   FRONT AND WITH UPPER TROUGH WILL RESULT IN SCATTERED THUNDERSTORMS.
   STEEP MID/UPPER LEVEL LAPSE RATES AND STRONG FORCING SUGGEST
   NUMEROUS LIGHTNING STRIKES POSSIBLE...ALONG WITH LITTLE
   PRECIPITATION GIVEN MARGINAL INSTABILITY AND DRY SUB CLOUD LAYER.
   VERY GUSTY WINDS WILL BE LIKELY WITH ANY STORMS.
   
   ...SRN AND WRN ID ALONG WITH ERN OREGON/NRN NV...
   IT WILL BE BREEZY AND DRY IN A POST FRONTAL REGIME WITH NEAR
   CRITICAL FIRE CONDITIONS. NWLY WINDS OF 15-20 MPH WITH HIGHER GUSTS
   APPEAR LIKELY THROUGH THE SNAKE RIVER VALLEY...WITH RH DROPPING INTO
   THE MID TEENS DESPITE RATHER COOL TEMPERATURES IN THE 60S AND 70S.
   
   ..JEWELL.. 09/09/2007
   
   ...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 090940
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0440 AM CDT SUN SEP 09 2007
   
   VALID 101200Z - 111200Z
   
   ...NO CRITICAL AREAS...
   
   ...SYNOPSIS...
   UPPER LOW WILL BECOME CUT OFF FROM NRN STREAM JET AND DECELERATE AS
   IT MOVES SEWD ACROSS UT/WY/CO. AT THE SURFACE...THE COLD FRONT WILL
   EXTEND FROM WRN CO INTO SRN UT/NV. LOCALLY STRONG W TO NW WINDS WILL
   PERSIST NEAR THIS FRONT...AS WELL AS ALONG THE W SLOPES OF THE NRN
   SIERRA INTO THE CASCADES. NUMEROUS THUNDERSTORMS ARE LIKELY AHEAD OF
   THE UPPER LOW FROM SRN WY INTO CO BUT THEY WILL BE WET IN NATURE.
   
   MEANWHILE...SURFACE PRESSURE GRADIENT WILL INCREASE ACROSS THE NRN
   ROCKIES/PLAINS AS AN AREA OF LOW PRESSURE MOVES SEWD ACROSS
   SASKATCHEWAN AND MANITOBA. THIS WILL RESULT IN WINDY AND DRY WEATHER
   FOR ERN MT INTO ND.
   
   ...WRN OREGON AND SWRN WA...
   STRONG/GUSTY WINDS WILL BE ONGOING MONDAY MORNING ALONG THE W SLOPES
   OF THE CASCADES BUT WILL DECREASE THROUGH THE DAY. IT WILL AGAIN BE
   WARM AND DRY WITH MIN RH IN THE TEENS...BUT IT APPEARS THAT WINDS
   WILL NOT BE AS STRONG AS PREVIOUS DAY. STILL...LOCALLY CRITICAL FIRE
   CONDITIONS MAY DEVELOP.
   
   ...ERN MT INTO ND...
   WLY WINDS WILL INCREASE TO 15-25 MPH AS LOW PRESSURE PASSES TO THE
   N. IT WILL BE RELATIVELY COOL WITH HIGHS ONLY IN THE 70S...BUT MIN
   RH SHOULD DROP INTO THE MID TEENS OVER MT AND INTO THE 20 PERCENT
   RANGE OVER CNTRL AND WRN ND.
   
   ...SRN UT/NRN AZ...
   THE COLD FRONT WILL EXTEND ACROSS SWRN CO INTO SRN UT/NRN AZ WITH
   GUSTY WLY TO NWLY WINDS OF 15-20 MPH. IT WILL NOT BE PARTICULARLY
   WARM...BUT RH AROUND 15 PERCENT IS EXPECTED.
   
   ...W SLOPES OF NRN SIERRA...
   WINDS WILL BE QUITE GUSTY MONDAY MORNING BUT WILL DECREASE THROUGH
   THE DAY AS PRESSURE GRADIENT RELAXES. STRONG HEATING WILL RESULT IN
   RH LEVELS IN THE LOW TO MID TEENS WITH E TO NELY WINDS GENERALLY
   LESS THAN 15 MPH BY AFTERNOON.
   
   ..JEWELL.. 09/09/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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