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
No Risk Areas Forecast

Click for Day 1 FireWX Areal Outline Product

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 291626

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1126 AM CDT FRI JUL 29 2016

   VALID 291700Z - 301200Z

   NO CHANGES...SEE PREVIOUS DISCUSSION BELOW FOR MORE DETAILS.

   ..DEAN.. 07/29/2016

   .PREV DISCUSSION... /ISSUED 0253 AM CDT FRI JUL 29 2016/

   ...SYNOPSIS...
   NORTHWESTERLY DEEP LAYER FLOW WILL CONTINUE TODAY FROM THE PACIFIC
   NORTHWEST TO THE CENTRAL ROCKIES AS UPPER ANTICYCLONE PERSISTS OVER
   THE SOUTHWEST DESERTS. MIDLEVEL MOISTURE WILL CONTINUE STREAMING
   NORTHWARD ACROSS THE GREAT BASIN AND ISOLATED TO WIDELY SCATTERED
   THUNDERSTORMS ARE EXPECTED OVER PORTIONS OF THE SIERRA MOUNTAINS AND
   WESTERN GREAT BASIN. THESE STORMS WILL PRODUCE LITTLE RAINFALL WITH
   PW VALUES GENERALLY BELOW 0.75 INCHES AND A DEEP...VERY DRY
   SUB-CLOUD LAYER IN PLACE. LIGHTNING STRIKES IN VERY DRY FUEL BEDS
   WILL POSE AN IGNITION THREAT WITH THESE STORMS. FIRE WEATHER
   CONCERNS NOT EXPECTED ELSEWHERE ACROSS THE CONUS.

   ...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
Critical 22,184 761,785 Yakima, WA...Kennewick, WA...Richland, WA...Pasco, WA...Walla Walla, WA...

Click for Day 2 FireWX Areal Outline Product (KWNSPFWFD2)

   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 291934

   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0234 PM CDT FRI JUL 29 2016

   VALID 301200Z - 311200Z

   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE COLUMBIA BASIN...

   NO CHANGES HAVE BEEN MADE TO THE EXISTING ELEVATED/CRITICAL
   AREAS...WITH AT LEAST LOW-END CRITICAL CONDITIONS STILL EXPECTED
   OVER PORTIONS OF THE COLUMBIA BASIN. SEE THE PREVIOUS DISCUSSION
   BELOW FOR MORE DETAILS.

   MEANWHILE...THE ISOLATED DRY THUNDERSTORM AREA HAS BEEN EXPANDED
   SLIGHTLY ON THE NORTHERN AND WESTERN EDGES...BUT THE FORECAST
   REASONING REMAINS UNCHANGED. THUNDERSTORM COVERAGE FROM NV/NRN UT
   INTO ERN ID/SWRN MT/NWRN WY MAY SUPPORT AN UPGRADE IN SUBSEQUENT
   OUTLOOKS IF CONFIDENCE IN THE DRYNESS OF THE TSTM ACTIVITY BECOMES
   SUFFICIENT.

   ..DEAN.. 07/29/2016

   .PREV DISCUSSION... /ISSUED 0253 AM CDT FRI JUL 29 2016/

   ...SYNOPSIS...
   AN UPPER SHORTWAVE TROUGH WILL TRACK ACROSS THE PACIFIC NORTHWEST
   AND NORTHERN ROCKIES ON SATURDAY. FALLING HEIGHTS AND INCREASED DEEP
   LAYER WESTERLY FLOW ASSOCIATED WITH THE TROUGH WILL RESULT IN
   INCREASING SURFACE WINDS AHEAD OF AN EASTWARD ADVANCING COLD FRONT.
   WESTERLY SURFACE WINDS NEAR 20 MPH WITH SOME HIGHER GUSTS ARE
   EXPECTED AS RH VALUES FALL TO AROUND 15-20 PERCENT. THESE WINDY/DRY
   CONDITIONS IN COMBINATION WITH DRY FUELS WILL LEAD TO CRITICAL FIRE
   WEATHER CONDITIONS. ELEVATED FIRE WEATHER CONDITIONS WILL EXTEND
   FURTHER SOUTH THROUGH EASTERN OREGON INTO NORTHWEST NV AND FAR NE
   CA. WIND SPEEDS WILL BE SOMEWHAT WEAKER HERE...BUT RH VALUES WILL BE
   CRITICALLY LOW. ADDITIONALLY...ISOLATED DRY THUNDERSTORMS WILL BE
   POSSIBLE FROM SOUTHEAST OREGON TO THROUGH THE SIERRA MOUNTAINS
   EASTWARD ACROSS THE GREAT BASIN AND CENTRAL/NORTHERN ROCKIES.

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

      

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