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    Day 2 FW Outlook >
Jul 5, 2015 Day 1 Fire Weather Outlook
Updated: Sun Jul 5 15:51:02 UTC 2015 (Print Version | 20150705 1700Z Day 1 FireWX shapefile | 20150705 1700Z Day 1 FireWX KML)
Day 1 Fire
 Population  Cities/Towns  CWAs  Interstates  Counties  FEMA Regions  Day 1 Surface Analysis

Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 051542

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1042 AM CDT SUN JUL 05 2015

   VALID 051700Z - 061200Z

   ONLY CHANGE TO ONGOING FORECAST IS TO EXPAND THE ELEVATED
   DELINEATION SLIGHTLY SOUTHWARD TO ACCOUNT FOR INSOLATION/HEATING ON
   NORTHERN EDGE OF CLOUD SHIELD ACROSS SOUTHERN OREGON.  WEAK N/NWLY
   SURFACE FLOW AND PRE-EXISTING DRY CONDITIONS WILL CONTINUE TO
   SUPPORT AN ELEVATED FIRE WEATHER THREAT THERE.  

   THE REMAINDER OF THE FORECAST IS UNCHANGED.  PLEASE SEE PREVIOUS
   DISCUSSION FOR MORE INFORMATION.

   ..COOK.. 07/05/2015

   .PREV DISCUSSION... /ISSUED 0219 AM CDT SUN JUL 05 2015/

   ...SYNOPSIS...
   THE MAIN FOCUS FOR FIRE WEATHER CONCERNS WILL BE ACROSS PARTS OF THE
   PACIFIC NORTHWEST TODAY. AN UPPER TROUGH WILL PIVOT EAST OF THE
   NORTHERN ROCKIES AND CONTINUE TRACKING EASTWARD TODAY...WHILE AN
   UPPER LOW SITS OFF THE COAST OF CA. THIS WILL LEAVE A WEAKNESS IN
   THE HEIGHT FIELD OVER THE PACIFIC NW AND THE SOUTHWESTERN RIDGE WILL
   SLOWLY BUILD NORTHWARD THROUGH THE PERIOD. ABUNDANT MIDLEVEL
   MOISTURE ACROSS SOUTHERN ORE INTO NORTHERN CA WILL LEAD TO ANOTHER
   ROUND OF THUNDERSTORMS AND A THREAT FOR NEW LIGHTNING STARTS.
   FURTHER NORTH OVER THE COLUMBIA BASIN...N/NELY LOW TO MIDLEVEL FLOW
   AND A DRY BOUNDARY LAYER WILL LEAD TO ANOTHER DAY OF ELEVATED FIRE
   WEATHER CONCERNS. 

   ...PACIFIC NORTHWEST...

   DRY CONDITIONS WILL PREVAIL ACROSS THE COLUMBIA BASIN TODAY WITH
   MINIMUM AFTERNOON RH VALUES FALLING INTO THE TEENS AS TEMPERATURES
   WARM INTO THE UPPER 80S TO NEAR 100 DEGREES. THE LACK OF A STRONGER
   PRESSURE GRADIENT WILL KEEP NORTHEAST WINDS SPEEDS BELOW THE
   CRITICAL THRESHOLD...AT 10-15 MPH WITH OCCASIONAL GUSTS TO 20 MPH.
   GIVEN THE ONGOING DROUGHT...LACK OF RECENT RAINFALL AND ABUNDANT DRY
   FUELS...ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED.

   FURTHER SOUTH ACROSS PARTS OF SOUTHERN ORE INTO NORTHERN
   CA...ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED. PW VALUES
   GENERALLY RANGE FROM .75-1.00 INCH...WITH THE LOWER VALUES FURTHER
   WEST. WHILE WETTING RAINS WILL OCCUR IN THE MAIN CORE OF
   THUNDERSTORMS...LIGHTNING STRIKES OUTSIDE THIS AREA WILL POSE A
   THREAT FOR NEW FIRE STARTS GIVEN FAVORABLE FUEL CONDITIONS AND
   LITTLE TO NO WETTING RAIN AWAY FROM THE MAIN CORES. GUSTY AND
   ERRATIC OUTFLOW WINDS ALSO WILL BE A CONCERN FOR ANY ONGOING FIRES
   ACROSS THE REGION.

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

   CLICK FOR DAY 1 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD1)
      
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Page last modified: July 05, 2015
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