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 151308
   
   DAY 1 FIRE WEATHER OUTLOOK CORR 1
   NWS STORM PREDICTION CENTER NORMAN OK
   0808 AM CDT WED AUG 15 2007
   
   VALID 151200Z - 161200Z
   
   CORRECTED FOR GRAPHIC
   
   ...CRITICAL FIRE WEATHER AREA FOR NRN CA...NWRN NV AND SRN OR...FOR
   LOW RH AND STRONG GUSTY WINDS...
   ...CRITICAL FIRE WEATHER AREA FOR NERN CA...NWRN NV...ERN OR...EXTRM
   S WA AND EXTRM WESTERN ID...FOR DRY THUNDERSTORM CONDITIONS...
   
   ...SYNOPSIS...
   A TROUGH IN THE GREAT LAKES REGION WILL BE SEPARATED BY A RIDGE OVER
   THE NORTHERN ROCKIES AND ANOTHER TROUGH APPROACHING THE PACIFIC
   NORTHWEST. AHEAD OF THE TROUGH IN THE NORTHWEST...MID-LEVEL MOISTURE
   WILL ADVECT INTO THE CENTRAL ROCKIES BRINGING A DRY THUNDERSTORM
   THREAT...AND FURTHER WEST...LOW RELATIVE HUMIDITY VALUES AND STRONG
   GUSTY SURFACE WINDS WILL CREATE A CRITICAL FIRE WEATHER THREAT IN
   THE REGION. ELSEWHERE...HOT AND DRY CONDITIONS IN THE GREAT PLAINS
   AND UNSEASONABLY WARM TEMPERATURES IN THE SOUTHEAST UNITED STATES
   WILL CONTINUE.
   
   ...CRITICAL FIRE WEATHER AREA - NRN CA...NWRN NV AND SRN OR...
   
   PRIMARY CONDITIONS: LOW RELATIVE HUMIDITY VALUES AND STRONG GUSTY
   WINDS...LONG TERM DROUGHT
   
   SURFACE WINDS AHEAD OF AN APPROACHING TROUGH WILL INCREASE OVER THE
   AREA DURING THE AFTERNOON AND WILL APPROACH 15-25 MPH.
   ADDITIONALLY...RELATIVE HUMIDITY VALUES WILL DROP TO BELOW 20
   PERCENT...WITH A MINIMUM NOTED ESPECIALLY OVER SACRAMENTO VALLEY. 
   STEEP MID-LEVEL LAPSE RATES OVER THE AREA OF LOWEST RELATIVE
   HUMIDITIES ARE FORECAST AS WELL...SO THE HIGHEST WIND GUSTS ARE
   EXPECTED TO BE IN NE CALIFORNIA. PORTIONS OF THIS REGION ARE ALSO
   UNDER A SUSTAINED DROUGHT...AND A CRITICAL FIRE WEATHER THREAT WILL
   EXIST.
   
   ...CRITICAL FIRE WEATHER AREA - NWRN NV...ERN OR...EXTRM S WA AND
   EXTRM WESTERN ID...
   
   PRIMARY CONDITIONS: DRY THUNDERSTORM CONDITIONS
   
   MID-LEVEL MOISTURE WILL INCREASE AHEAD OF THE SAME UPPER-LEVEL
   TROUGH AS IT MOVES INTO THE PACIFIC NORTHWEST. THIS MOISTURE WILL
   HELP SUPPORT SCATTERED ELEVATED THUNDERSTORMS THROUGHOUT THE REGION
   AND GIVEN THE FORECAST LOW SURFACE RELATIVE HUMIDITY VALUES...DRY
   THUNDERSTORMS ARE POSSIBLE. STORMS THAT FORM IN THIS ENVIRONMENT
   WILL LIKELY CAUSE SUDDEN WIND SHIFTS AS ERRATIC OUTFLOW INTERACTS
   WITH THE COMPLEX TERRAIN...AND POSSIBLE NEW FIRES FROM LIGHTNING
   STRIKES.
   
   ...NORTH AND SOUTH DAKOTA...
   SURFACE WINDS BEHIND A COLD FRONT MOVING SOUTHWARD OUT OF THE REGION
   WILL INCREASE TO 15-25 MPH DURING THE AFTERNOON. RELATIVE HUMIDITY
   VALUES WILL BE LOW...AROUND 15 TO 25 PERCENT...AND TEMPERATURES WILL
   CLIMB TO NEAR THE UPPER 80S...APPROACHING CRITICAL FIRE WEATHER
   CONDITIONS.
   
   ...SRN NV...
   SOME ELEVATED DRY THUNDERSTORMS ARE POSSIBLE HERE GIVEN THE
   MID-LEVEL MOISTURE VALUES...COVERAGE IS EXPECTED TO BE ISOLATED
   GIVEN THE LACK OF A SIGNIFICANT STORM SYSTEM TO TRIGGER CONVECTION.
   
   ...OK AND TX PANHANDLES...
   VERY HOT TEMPERATURES...ABOVE 100 DEGREES F...AND LOW RELATIVE
   HUMIDITY VALUES COUPLED WITH STRONG AND GUSTY WINDS WILL BRING THIS
   AREA CLOSE TO A CRITICAL FIRE WEATHER THREAT. FORECAST RELATIVE
   HUMIDITY VALUES ARE AROUND 20 TO 25 PERCENT.
   
   ...SOUTHEASTERN STATES...
   UNSEASONABLY HOT SURFACE TEMPERATURES...AND LOW RELATIVE HUMIDITY
   VALUES WILL AGAIN BE OBSERVED IN THIS REGION. LACK OF SIGNIFICANTLY
   HIGH SURFACE WIND SPEEDS WILL MINIMIZE THE FIRE WEATHER RISK.
   
   ..LEVIT.. 08/15/2007
   
   ...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 151309
   
   DAY 2 FIRE WEATHER OUTLOOK CORR 1
   NWS STORM PREDICTION CENTER NORMAN OK
   0809 AM CDT WED AUG 15 2007
   
   VALID 161200Z - 171200Z
   
   CORRECTED FOR GRAPHIC
   
   ...CRITICAL FIRE WEATHER AREA FOR MOST OF NV...SW ID...SE OR...EXTRM
   NE CA AND WESTERN UT...FOR LOW RH AND STRONG AND GUSTY WINDS...
   ...CRITICAL FIRE WEATHER AREA FOR EASTERN ID...WESTERN MT...NW
   WY...FOR DRY THUNDERSTORMS...
   
   ...SYNOPSIS...
   A TROUGH IN THE GREAT LAKES REGION WILL CONTINUE TO MOVE EASTWARD
   DURING THE FORECAST PERIOD...WHILE ANOTHER TROUGH ENTERS THE PACIFIC
   NORTHWEST. AHEAD OF THIS TROUGH IN THE WEST...CONDITIONS WILL BECOME
   FAVORABLE FOR DRY THUNDERSTORMS AND A CRITICAL FIRE WEATHER THREAT
   IN THE CENTRAL ROCKIES...AND ANOTHER THREAT WILL EXIST SOUTH OF THAT
   TROUGH DUE TO STRONG SURFACE WIND SPEEDS...LOW RELATIVE HUMIDITY
   VALUES...AND HIGH SURFACE TEMPERATURES. ELSEWHERE...A TROPICAL
   SYSTEM WILL MOVE NORTH INTO TEXAS BRINGING PRECIPITATION TO THE
   REGION...AND HOT WEATHER WILL CONTINUE IN THE SOUTHEAST UNITED
   STATES.
   
   ...CRITICAL FIRE WEATHER AREA - MOST OF NV...SW ID...SE OR...EXTRM
   NE CA AND WESTERN UT...
   
   PRIMARY CONDITIONS: LOW RELATIVE HUMIDITY VALUES...STRONG AND GUSTY
   SFC WINDS...LONG TERM DROUGHT
   
   SURFACE WIND SPEEDS WILL INCREASE DURING THE AFTERNOON AHEAD OF THE
   APPROACH OF AN UPPER-LEVEL TROUGH...WITH VALUES AROUND 15-25 MPH AND
   HIGHER GUSTS.  AFTERNOON TEMPERATURES WILL BE VERY WARM WITH
   OBSERVED VALUES LIKELY IN THE UPPER 90S F...AND RELATIVE HUMIDITY
   VALUES WILL BE VERY LOW...VARYING BETWEEN 10 AND 20 PERCENT. GIVEN
   THESE CONDITIONS AND THE LONG-TERM DROUGHT IN THE REGION...CRITICAL
   FIRE WEATHER CONDITIONS WILL EXIST...ESPECIALLY DURING THE AFTERNOON
   WHEN THE CRITERIA IS MAXIMIZED.
   
   ...CRITICAL FIRE WEATHER AREA - EASTERN ID...WESTERN MT...NW WY...
   
   PRIMARY CONDITIONS: DRY THUNDERSTORMS
   
   VERTICAL MOTION WILL INCREASE OVER THE NORTHERN ROCKIES AHEAD OF THE
   APPROACHING TROUGH IN THE PACIFIC NORTHWEST...AND A PLUME OF
   MID-LEVEL MONSOONAL MOISTURE WILL ADVECT NORTHWARD INTO THE REGION.
   AS IN PREVIOUS DAYS...SCATTERED...ELEVATED...DRY THUNDERSTORMS WILL
   BE POSSIBLE DUE TO THE UNSTABLE ENVIRONMENT AND LOW SURFACE RELATIVE
   HUMIDITY VALUES. LIGHTNING FROM THESE STORMS COULD CAUSE NEW FIRES
   DUE TO THE DROUGHT AND DRY FUELS IN THE REGION...AND DOWNDRAFTS WILL
   CAUSE RAPIDLY CHANGING SURFACE WIND CONDITIONS.
   
   ...SOUTHEAST UNITED STATES...
   SURFACE TEMPERATURES WILL AGAIN CLIMB TO UNSEASONABLY HIGH
   VALUES...IN THE MID TO UPPER 90S F...THROUGHOUT THE REGION. RELATIVE
   HUMIDITY VALUES ARE FORECAST TO BE FAIRLY MODERATE WITH VALUES
   AROUND 25 TO 30 PERCENT...AND WIND SPEEDS WILL BE LIGHT...MINIMIZING
   THE OVERALL FIRE WEATHER RISK. HOWEVER...FUELS ARE LIKELY DRYING DUE
   TO THE SUSTAINED HIGH SURFACE TEMPERATURES.
   
   ..LEVIT.. 08/15/2007
   
   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
   
      

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