Storm Prediction Center Day 1 Fire Weather Outlook

Created: Mon Aug 3 09:05:03 UTC 2015 (20150803 1200Z Day 1 FireWX shapefile | 20150803 1200Z 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 030859

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0359 AM CDT MON AUG 03 2015

   VALID 031200Z - 041200Z

   ...SYNOPSIS...
   AN ELONGATED UPPER TROUGH STRETCHING FROM THE PACIFIC NORTHWEST TO
   NEAR THE FOUR CORNERS REGION SHOULD CONTINUE LIFTING NEWD
   TODAY...WHILE ANOTHER UPPER TROUGH/CLOSED LOW CURRENTLY OVER BRITISH
   COLUMBIA WILL BEGIN TO DROP SLOWLY SEWD. MEANWHILE...AN UPPER RIDGE
   IS EXPECTED TO BEGIN REBUILDING OVER THE DESERT SOUTHWEST BY THE END
   OF THE PERIOD. SOME THREAT FOR ISOLATED DRY THUNDERSTORMS WILL
   CONTINUE OVER PARTS OF THE NORTHWEST...WITH LOCALLY ELEVATED WIND/RH
   CONDITIONS POSSIBLE OVER PARTS OF THE COLUMBIA BASIN.

   ...DRY TSTM THREAT: INTERIOR NORTHWEST/NRN ROCKIES...
   ISOLATED TO WIDELY SCATTERED TSTMS ARE ANTICIPATED ACROSS PORTIONS
   OF THE INTERIOR NORTHWEST INTO THE CNTRL/NRN ROCKIES AS THE UPPER
   TROUGH LIFTS NEWD. OBSERVED SOUNDINGS AND GPS-BASED ANALYSES
   INDICATE PW VALUES IN THE 0.6 - 1 INCH RANGE ALONG AND AHEAD OF THE
   TROUGH...WHICH ARE SUFFICIENT FOR LOCALLY WETTING RAINS UNDERNEATH
   THE STRONGEST CORES. HOWEVER...WHERE STRONG HEATING AND DRYING OF
   THE BOUNDARY LAYER CAN OCCUR THIS AFTERNOON...EVAPORATION MAY LIMIT
   RAINFALL AMOUNTS AND RESULT IN A THREAT OF AT LEAST ISOLATED DRY
   TSTMS. THE GREATEST CONCURRENCE OF TSTM COVERAGE AND HOT/WELL-MIXED
   CONDITIONS IS EXPECTED TO BE OVER PARTS OF CNTRL ID INTO WRN
   MT...BUT A FAIRLY BROAD REGION WILL SEE AN ISOLATED THREAT OF MIXED
   WET/DRY TSTMS WHERE FUELS ARE RECEPTIVE. WINDS IN THE VICINITY OF
   THESE STORMS MAY BECOME GUSTY AND ERRATIC.

   ...WIND/RH THREAT: PORTIONS OF THE COLUMBIA RIVER VALLEY...
   LOW-LEVEL WLY FLOW IS EXPECTED TO INCREASE THIS AFTERNOON ACROSS THE
   ERN SLOPES OF THE CASCADES INTO PORTIONS OF THE COLUMBIA RIVER
   VALLEY. WHILE TEMPS WILL COOL SLIGHTLY COMPARED TO PREVIOUS
   DAYS...RH VALUES ARE STILL EXPECTED TO DROP INTO THE 10-20 PERCENT
   RANGE AT PEAK HEATING...WHICH WILL COMBINE WITH SUSTAINED WINDS OF
   15-20 MPH TO PRODUCE ELEVATED WIND/RH CONDITIONS IN AN AREA OF VERY
   DRY FUELS.

   ..DEAN.. 08/03/2015

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

      

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