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 200907
   
   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0407 AM CDT SUN AUG 20 2006
   
   VALID 201200Z - 211200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR CENTRAL AND ERN UT...
   
   ...SYNOPSIS...
   UPPER/THERMAL RIDGE WILL CONTINUE TO STRENGTHEN ACROSS THE
   WEST...WITH AXIS FROM THE PACIFIC NW INTO THE GREAT BASIN. THE AIR
   MASS WITHIN WILL BE HOT AND DRY WITH MDT TO HIGH HAINES AND LIGHT
   WINDS. TO THE SOUTH...WRN EDGE OF MONSOONAL MOISTURE WILL ALLOW FOR
   DRY STORMS ACROSS THE MTNS OF CENTRAL AND ERN UT.
   
   TO THE NORTH...A COLD FRONT WILL EXTEND FROM CENTRAL ND WWD ACROSS
   SRN MT/NRN WY. BEHIND THIS FRONT...THE AIR MASS WILL BE MODERATELY
   WARM AND DRY...WITH INCREASED NLY WINDS. ISOLATED THUNDER WILL ALSO
   BE LIKELY IN UPSLOPE REGION OF SWRN MT.
   
   ELSEWHERE...IT WILL REMAIN HOT SOUTH OF A FRONT FROM CNTRL/NRN TX
   INTO THE LOWER MS VALLEY WITH LIGHT WIND.
   
   ...CRITICAL FIRE WEATHER AREA - CENTRAL AND ERN UT...
   
   PRIMARY CONDITIONS: DRY THUNDERSTORMS / LOW RH
   
   SCATTERED STORMS WILL DEVELOP ON THE MTNS OF CNTRL AND ERN UT BY
   LATE AFTERNOON. STORMS WILL MOVE LITTLE DURING THE DAY DUE TO WEAK
   WINDS ALOFT.  LOW LEVELS WILL BE DRY WITH MIN RH NEAR 15 PERCENT.
   STORMS MAY TRANSITION TO MORE A WET REGIME BY EVENING AS THEY SHIFT
   INTO SERN UT.
   
   ...SWRN MT...
   A FEW STORMS WILL DEVELOP BY LATE AFTERNOON OVER THE HIGH TERRAIN OF
   SW MT DUE TO HEATING...INCREASED CONVERGENCE AND UPSLOPE FLOW WITH
   FRONT. RH LEVELS WILL BE BELOW 20 PERCENT WITH TEMPERATURES IN THE
   80S. THUS...THE STORMS SHOULD BE MAINLY DRY. LIGHTNING IGNITION
   EFFICIENCY IS NOT VERY HIGH BUT A FIRE START CANNOT BE RULED OUT.
   
   ...ERN MT/WY INTO WRN DAKOTAS...
   A COLD FRONT WILL MOVE SWD ACROSS MT AND THE DAKOTAS
   TODAY...USHERING IN A DRY AIR MASS. RH WILL DROP INTO THE TEENS WITH
   TEMPS MAINLY 85-90 F. NLY WINDS SHOULD AVERAGE 10-15 MPH WITH A FEW
   HIGHER GUSTS FOR A MARGINAL FIRE THREAT.
   
   ...SWRN OR/NRN CA...
   STRONG HEATING AND AN INCREASE IN MOISTURE MAY YIELD ISOLATED LATE
   DAY STORMS ACROSS THE OREGON CASCADES INTO FAR NRN CA. ANY STORMS
   THAT DO FORM WILL BE DRY GIVEN VERY HOT AND DRY AIR MASS BENEATH
   CLOUD BASE. CHANCES OF THUNDER WILL INCREASE INTO MONDAY.
   
   ...GREAT BASIN INTO OR/WA/ID...
   THERMAL RIDGE WILL INTENSIFY TODAY...WITH HAINES INDEX INCREASING
   INTO THE MDT TO HIGH CATEGORY. THUS...CONDITIONS WILL FAVOR PLUME
   DOMINATION OF EXISTING FIRES LATE IN THE DAY. WINDS WILL BE LIGHT
   WHICH WILL TEND TO LIMIT SPREAD IN ABSENCE OF SLOPED TERRAIN.
   
   ..JEWELL.. 08/20/2006
   
   ...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 201005
   
   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0505 AM CDT SUN AUG 20 2006
   
   VALID 211200Z - 221200Z
   
   ...CRITICAL FIRE WEATHER AREA FOR DRY THUNDER ACROSS MUCH OF
   OREGON...
   
   ...SYNOPSIS...
   A SHORTWAVE TROUGH WILL MOVE NEWD OUT OF CA INTO THE PACIFIC
   NW...HELPING TO BREAK DOWN THE UPPER RIDGE AND CAUSING DRY LIGHTNING
   TO OCCUR OVER MUCH OF OREGON. THERMAL RIDGE AXIS WILL EXTEND FROM
   WA/OR INTO SW ID...SWD INTO THE GREAT BASIN. WINDS WILL INCREASE
   ACROSS THE GREAT BASIN AS TROUGH PASSES TO THE N. HAINES INDEX WILL
   BE HIGH OVER A LARGE AREA...FROM SRN CA INTO NV/WRN UT NWD TO WA.
   PLUME DOMINATED FIRES WILL LIKELY OCCUR WITHIN THIS ZONE.
   
   ELSEWHERE...ISOLATED AFTERNOON DRY THUNDERSTORMS ARE ONCE AGAIN
   LIKELY ACROSS CENTRAL UT BUT COVERAGE APPEARS TO BE LIMITED AT THIS
   TIME.
   
   ...CRITICAL FIRE WEATHER AREA - MUCH OF OREGON...
   
   PRIMARY CONDITIONS: DRY THUNDERSTORMS / MDT TO HIGH HAINES / VERY
   LOW RH
   
   IT WILL BE VERY HOT AND DRY FOR MUCH OF THE DAY WITH THERMAL
   LOW/RIDGE ACROSS ERN OREGON INTO NRN NV...WITH RH DIPPING INTO THE
   SINGLE DIGITS AND LOWER TEENS. MEANWHILE...UPPER SHORTWAVE TROUGH
   WILL APPROACH FROM THE SW. THIS WILL INCREASE MOISTURE LEVELS AND
   LIFT...CAUSING DRY THUNDERSTORMS TO ERUPT OVER MUCH OF OREGON LATE
   IN THE DAY. LIGHTNING ACTIVITY IS EXPECTED TO BE CENTERED OVER
   CENTRAL OREGON...BUT MAY EXTEND AS FAR E AS ID. ERRATIC WINDS WILL
   BE LIKELY WITH ANY STORMS...WITH THE POSSIBILITY OF AN ORGANIZED
   NW/SE ORIENTED LINE OF OUTFLOW.
   
   ...SRN CA INTO NV AND WRN UT...
   NEAR CRITICAL CONDITIONS WILL MATERIALIZE ON MONDAY AS WINDS
   INCREASE TO 15-20 MPH. RH WILL BE VERY LOW FROM THE SINGLE DIGITS
   INTO THE TEENS...WITH A HIGH HAINES INDEX. A FEW DRY STORMS ARE
   LIKELY OVER CENTRAL UT...BUT COVERAGE IS NOT EXPECTED TO MEET
   CRITICAL REQUIREMENTS.
   
   ...WA INTO ID...
   A HIGH HAINES INDEX WILL BE IN PLACE MONDAY IN ASSOCIATION WITH
   THERMAL RIDGE AXIS. WINDS ON THE LARGE SCALE WILL BE LIGHT...BUT
   STRONG MIXING AND LOCALIZED TERRAIN EFFECTS MAY CAUSE OCCASIONAL
   GUSTS. LATER IN THE EVENING...THERE WILL BE AN INCREASING THREAT OF
   DRY THUNDERSTORMS. WHILE THE MAIN CONCENTRATION SHOULD BE FARTHER SW
   INTO OREGON...CRITICAL AREA MAY BE EXPANDED IF CONDITIONS WARRANT IN
   NEXT DAY ONE OUTLOOK.
   
   ..JEWELL.. 08/20/2006
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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