Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks

Day 1 Fire Weather Forecast graphic
Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
Dry Tstm 51,116 1,010,769 Yakima, WA...Kennewick, WA...Richland, WA...Pasco, WA...Walla Walla, WA...

Click for Day 1 FireWX Areal Outline Product

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 010900

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0400 AM CDT FRI AUG 01 2014

   VALID 011200Z - 021200Z

   ...CRITICAL FIRE WEATHER AREA FOR NERN ORE / ERN SLOPES OF WA
   CASCADES / NERN WA MTNS...

   ...SYNOPSIS...
   THE UPPER-AIR PATTERN TODAY WILL FEATURE A RIDGE OVER MUCH OF THE
   WRN U.S. AND A LONGWAVE TROUGH OVER THE ERN HALF OF THE CONUS. 
   EARLY MORNING SATELLITE IMAGERY SHOWS A DISTURBANCE NEAR THE OREGON
   COAST AND THIS FEATURE WILL MOVE NNEWD AND FAVOR THE BREAKING DOWN
   OF THE UPPER RIDGE OVER THE PACIFIC NW STATES TODAY AND TONIGHT. 
   ISOLATED TO SCATTERED THUNDERSTORMS ARE FORECAST IN ASSOCIATION WITH
   THE UPPER DISTURBANCE AND WILL RESULT IN AN ELEVATED TO CRITICAL
   FIRE WEATHER THREAT FOR DRY THUNDERSTORMS OVER PORTIONS OF
   WASHINGTON AND OREGON.

   ...ERN HALF OF ORE AND WA / NRN ID / NWRN NV / EXTREME NERN CA...
   AN APPRECIABLE THUNDERSTORM AND ASSOCIATED LIGHTNING EPISODE WILL
   BEGIN EARLY TODAY AND GRADUALLY INCREASE DURING THE DAY WHILE MOVING
   NEWD INTO NERN ORE AND THE ERN HALF OF WA AND LINGERING TONIGHT. 
   THE UPPER DISTURBANCE IS FORECAST TO INVOKE MID-LEVEL HEIGHT FALLS
   OVER ORE AND WA TODAY AS LARGE-SCALE ASCENT SPREADS DOWNSTREAM IN
   CONCERT WITH THE DISTURBANCE FAVORING THE DEVELOPMENT OF
   THUNDERSTORMS.  THE 00Z/01 OTX RAOB SHOWED A PRE-CONDITIONED STEEP
   LAPSE RATE AND VERY DRY BOUNDARY-LAYER PROFILE IN ADVANCE OF THE
   APPROACHING UPPER FEATURE.  FORECAST SOUNDINGS SHOW DEEP/WELL-MIXED
   BOUNDARY LAYERS WITH RH IN THE TEENS FROM NWRN NV NWD TO THE WA/BC
   BORDER.  ALTHOUGH PW VALUES WILL RANGE FROM 0.7-1.0 INCH AND
   GENERALLY 15 MPH STORM MOTIONS WILL SUPPORT A MIX MODE OF WET AND
   DRY STORMS...WIDELY SCATTERED TO SCATTERED THUNDERSTORM COVERAGE IS
   FORECAST AND SUPPORTED BY THE LATEST DETERMINISTIC AND
   CONVECTION-ALLOWING MODEL OUTPUT.  FOR THESE REASONS...SATISFACTORY
   CONFIDENCE IS ATTAINED FOR A CRITICAL SCATTERED DRY THUNDERSTORM
   THREAT.

   ..SMITH.. 08/01/2014

   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...

      
Day 2 Fire Weather Forecast graphic
Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast

Click for Day 2 FireWX Areal Outline Product (KWNSPFWFD2)

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 010958

   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0458 AM CDT FRI AUG 01 2014

   VALID 021200Z - 031200Z

   ...SYNOPSIS...
   A LARGE-SCALE TROUGH WILL REMAIN OVER THE ERN U.S. WHILE AN UPPER
   RIDGE INFLUENCES THE WRN STATES.  AN UPPER TROUGH IS FORECAST TO
   MOVE ACROSS THE PACIFIC NW STATES ON SATURDAY AND PROMOTE
   THUNDERSTORM DEVELOPMENT IN THE NWRN GREAT BASIN NWD TO THE WA/ID/BC
   BORDER.  WARM TO HOT TEMPS OVER THE INTERIOR PARTS OF THE PACIFIC NW
   WILL AID IN SUPPORTING A DRY THUNDERSTORM THREAT FOR THE ERN HALVES
   OF ORE/WA AND INTO NRN NV AND WRN ID.

   ...ERN ORE AND WA / WRN ID / NRN NV...
   A PROGRESSIVE UPPER TROUGH --INITIALLY OVER THE ERN PACIFIC ON
   FRIDAY-- IS FORECAST TO MOVE INTO WA/ORE ON SATURDAY AND GLANCE
   AREAS FARTHER S OVER THE NWRN NV.  ASCENT ASSOCIATED WITH THIS UPPER
   FEATURE AND ADEQUATE MOISTURE IN THE REGION WILL FAVOR THE
   DEVELOPMENT OF DIURNALLY PEAKING THUNDERSTORM ACTIVITY.  FORECAST
   SOUNDINGS SHOW VERY STEEP LOWER- TO MID-LEVEL TROPOSPHERIC LAPSE
   RATES AND DEEP/WELL-MIXED AND DRY SUB-CLOUD LAYERS.  CONCERNS
   REGARDING RELATIVELY HIGH PW /AROUND 1 INCH/ IN PARTS OF THE AREA
   WILL PROMOTE A MIX OF SOME WET AND DRY THUNDERSTORM MODES. 
   CONVERSELY...FASTER STORM MOTIONS THAN THE DAY 1 /FRIDAY/ FORECAST
   MAY RESULT IN SMALL RAINFALL AMOUNTS.  DETERMINISTIC GUIDANCE
   SUGGESTS WIDELY SCATTERED TO SCATTERED THUNDERSTORM COVERAGE OVER
   PORTIONS OF THIS GENERAL REGION.  A LOCALIZED CRITICAL FIRE WEATHER
   THREAT IS POSSIBLE IN AREAS --DUE TO SCATTERED DRY THUNDERSTORM
   ACTIVITY-- BUT CONFIDENCE REMAINS SUFFICIENTLY LOW AT THIS TIME TO
   NOT HIGHLIGHT AN AREA YET.

   ..SMITH.. 08/01/2014

   ...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...

      

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