Storm Prediction Center Day 1 Fire Weather Outlook

Created: Sat Jul 30 16:54:03 UTC 2016 (20160730 1700Z Day 1 FireWX shapefile | 20160730 1700Z Day 1 FireWX KML)

Day 1 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...
Dry Tstm 113,019 3,065,294 Salt Lake City, UT...West Valley City, UT...Provo, UT...West Jordan, UT...Orem, UT...

Click for Day 1 FireWX Areal Outline Product

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 301649

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1149 AM CDT SAT JUL 30 2016

   VALID 301700Z - 311200Z

   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE COLUMBIA BASIN FOR
   STRONG WINDS AND LOW RH...
   ...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NERN NV...NRN
   UT...SRN/ERN ID...WRN WY...FAR SWRN MT FOR DRY THUNDERSTORMS...

   THE PRIMARY CHANGE TO THE OUTLOOK IS TO EXPAND THE SCATTERED DRY
   THUNDERSTORM AREA NORTHWARD TO INCLUDE PORTIONS OF SRN/ERN ID...WRN
   WY...AND FAR SWRN MT...WHERE SCATTERED COVERAGE OF THUNDERSTORMS IS
   EXPECTED WITH LIMITED RAINFALL...AND DRY FUELS WILL BE PRONE TO
   LIGHTNING CONDITIONS. GUSTY AND ERRATIC WINDS WILL BE POSSIBLE
   ACROSS THE ENTIRE SCATTERED DRY THUNDERSTORM AREA...WITH SOME
   POTENTIAL FOR LARGER/STRONGER OUTFLOWS GIVEN RELATIVELY WIDESPREAD
   STORM COVERAGE. 

   A SMALL ELEVATED AREA WAS ALSO ADDED ACROSS PORTIONS OF THE SNAKE
   RIVER PLAIN AND ADJACENT RANGES...WHERE SUSTAINED WINDS OF 15-20 MPH
   WITH HIGHER GUSTS COMBINED WITH MINIMUM RH VALUES OF 10-15 PERCENT
   WILL RESULT IN ELEVATED WIND/RH CONDITIONS THIS AFTERNOON. 

   THE CRITICAL AREA ACROSS THE COLUMBIA BASIN AND THE SURROUNDING
   ELEVATED AREA ARE UNCHANGED FROM THE PREVIOUS OUTLOOK...SEE THE
   PREVIOUS DISCUSSION BELOW FOR MORE DETAILS.

   ..DEAN.. 07/30/2016

   .PREV DISCUSSION... /ISSUED 0225 AM CDT SAT JUL 30 2016/

   ...SYNOPSIS...
   AN UPPER SHORTWAVE TROUGH WILL EMERGE OVER THE PACIFIC NORTHWEST AND
   NORTHERN ROCKIES TODAY LEADING TO FALLING HEIGHTS AND INCREASING
   WESTERLY FLOW OVER THE REGION. THIS WILL AID IN DEVELOPMENT OF
   ISOLATED TO SCATTERED THUNDERSTORMS ACROSS A LARGE PORTION OF THE
   GREAT BASIN INTO PARTS OF THE NORTHERN ROCKIES. THESE STORMS MAY BE
   A MIX OF WET AND DRY MODES...WITH HIGHER PW VALUES WITH SOUTHWARD
   EXTENT INTO CENTRAL NV/UT. GIVEN CRITICALLY DRY FUELS AND ISOLATED
   TO SCATTERED STORMS...LIGHTNING IGNITIONS WILL BE OF PARTICULAR
   CONCERN TODAY. FURTHERMORE...INCREASED WESTERLY DEEP LAYER FLOW WILL
   LEAD TO ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS FROM THE
   COLUMBIA BASIN SOUTHWARD ACROSS EASTERN OREGON INTO NORTHEAST
   CA/NORTHWEST NV. WIND SPEEDS WILL RANGE FROM 20-25 MPH WITH SOME
   HIGHER GUSTS IN THESE LOCATIONS...WITH RH VALUES FALLING INTO THE
   10-20 PERCENT RANGE.

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

      

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