Storm Prediction Center Day 1 Fire Weather Outlook

Created: Thu Aug 25 15:52:02 UTC 2016 (20160825 1700Z Day 1 FireWX shapefile | 20160825 1700Z Day 1 FireWX KML)

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 251548

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1048 AM CDT THU AUG 25 2016

   VALID 251700Z - 261200Z

   NO CHANGES HAVE BEEN MADE TO THE ELEVATED AREA ACROSS PARTS OF SWRN
   WA AND WRN ORE. SEE THE PREVIOUS DISCUSSION BELOW FOR MORE
   INFORMATION.

   ..GLEASON.. 08/25/2016

   .PREV DISCUSSION... /ISSUED 0202 AM CDT THU AUG 25 2016/

   ...SYNOPSIS...
   WEAK MID-LEVEL TROUGHING WILL PERSIST ACROSS WESTERN PORTIONS OF THE
   COUNTRY TODAY...WHILE RIDGING REMAINS STRONG OVER THE SOUTHEAST. 
   MID-LEVEL FLOW WILL BE RELATIVELY WEAK IN DRY AREAS OF THE WEST.  AT
   THE SURFACE...A WEAK LOW/INVERTED TROUGH WILL PERSIST ACROSS THE
   WESTERN GREAT BASIN...WHILE HIGH PRESSURE MOVES SOUTHWARD ACROSS THE
   NORTHERN HIGH PLAINS AND A 1037 MB HIGH MOVES SLOWLY WESTWARD NEAR
   45N/145W IN THE NORTHEASTERN PACIFIC.  ALTHOUGH FIRE WEATHER
   CONCERNS OVERALL SHOULD BE MODEST ACROSS THE COUNTRY DUE TO WEAK
   FLOW IN MOST DRY AREAS...PARTS OF THE PACIFIC NORTHWEST WILL
   EXPERIENCE ELEVATED FIRE WEATHER CONDITIONS THIS AFTERNOON.

   ...SOUTHWESTERN WASHINGTON STATE AND WESTERN OREGON...
   HIGH-RESOLUTION MODEL GUIDANCE /PARTICULARLY THE RAP AND NAM4/
   SUGGEST THAT NORTHERLY SURFACE FLOW WILL DEVELOP IN THE REGION THIS
   AFTERNOON...PARTIALLY IN RESPONSE TO MODEST NORTHERLY MID-LEVEL FLOW
   AND THE PRESSURE GRADIENT BETWEEN THE NORTHEASTERN PACIFIC HIGH
   PRESSURE AREA AND THE WESTERN GREAT BASIN INVERTED TROUGH.  WINDS
   WILL APPROACH 15 MPH IN SEVERAL AREAS...WITH HIGHER GUSTS NOT
   COMPLETELY OUT OF THE QUESTION.  SUNSHINE AND WARMING SURFACE
   TEMPERATURES WILL FOSTER FALLING RH VALUES REACHING 10-15
   PERCENT...ESPECIALLY IN AREAS AWAY FROM THE COAST.  DRY FUELS IN THE
   REGION WILL BE CONDUCIVE FOR FIRE SPREAD...AND LATEST GUIDANCE FROM
   THE NORTHWEST GACC INDICATE A CRITICAL BURN ENVIRONMENT FOR PARTS OF
   THE AREA.  AN ELEVATED FIRE WEATHER DELINEATION HAS BEEN INTRODUCED
   TO ADDRESS THIS THREAT.

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

      

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