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    Day 2 FW Outlook >
Jul 29, 2015 Day 1 Fire Weather Outlook
Updated: Wed Jul 29 16:35:02 UTC 2015 (Print Version | 20150729 1700Z Day 1 FireWX shapefile | 20150729 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 291630

   DAY 1 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1130 AM CDT WED JUL 29 2015

   VALID 291700Z - 301200Z

   ...NORTHERN CALIFORNIA AND SOUTHWESTERN OREGON...
   OFFSHORE GRADIENT IS IN PLACE THIS MORNING WITH SURFACE ANALYSIS
   OBSERVING AN 11 MB OFFSHORE GRADIENT FROM STS TO BNO. OBSERVATIONS
   IN THE SISKIYOUS AND SRN COASTAL RANGES ARE REPORTING EASTERLY WINDS
   NEAR 20 MPH AMIDST RH VALUES AROUND 20 PERCENT. THESE METEOROLOGICAL
   CONDITIONS ARE CONSISTENT WITH AN ELEVATED FIRE WEATHER THREAT.
   THESE CONDITIONS ARE EXPECTED TO CONTINUE FOR THE NEXT FEW HOURS
   BEFORE THE GRADIENT DIURNALLY WEAKENS. THE GRADIENT IS NOT EXPECTED
   TO BE AS STRONG LATE TONIGHT AND TOMORROW MORNING WITH THE RESULTING
   WEAKER WINDS TEMPERING THE FIRE WEATHER THREAT.

   ...N-CNTRL MT...
   DOWNSLOPE EFFECTS WILL HELP PUSH TEMPERATURES INTO THE 80S WITH MIN
   RH VALUES AROUND 20 TO 25 PERCENT. HOWEVER...A GRADUALLY WEAKENING
   SURFACE PRESSURE GRADIENT AND THE LACK OF STRONGER MID-LEVEL FLOW
   SHOULD PREVENT THE WIND SPEEDS FROM TOPPING 20 MPH. AS SUCH...SOME
   LOCALLY ELEVATED FIRE WEATHER CONDITIONS ARE POSSIBLE WHERE FUELS
   ARE DRY BUT THE LACK OF MORE SUBSTANTIAL FIRE WEATHER THREAT
   PRECLUDES THE NEED FOR AN OUTLOOK AREA.

   ..MOSIER.. 07/29/2015

   .PREV DISCUSSION... /ISSUED 0156 AM CDT WED JUL 29 2015/

   ...SYNOPSIS...
   A STRONG IMPULSE OVER WESTERN ONTARIO AT THE BEGINNING OF THE
   FORECAST PERIOD WILL CONTINUE LIFTING AWAY FROM THE CONUS AND INTO
   THE HUDSON BAY AREA THROUGH THE DAY...RELAXING FLOW AT THE SURFACE
   AND ALOFT OVER DRY AREAS OF THE WESTERN/NORTHWESTERN CONUS AND
   INTERMOUNTAIN NORTHWEST.  A BAND OF ENHANCED WESTERLY MID-LEVEL FLOW
   WILL EXIST ACROSS THE NORTHERN PLAINS AND UPPER MISSISSIPPI VALLEY
   DURING THE PERIOD AND A SHORTWAVE RIDGE WILL MOVE STEADILY EASTWARD
   OVER THE NORTHEASTERN CONUS.  FARTHER SOUTH...A NEARLY STATIONARY
   UPPER RIDGE WILL REMAIN ANCHORED OVER THE SOUTHERN PLAINS...WITH
   SOME BUILDING OF THIS RIDGE WESTWARD INTO NEVADA.

   ...NORTHERN CALIFORNIA AND SOUTHWESTERN OREGON...
   A SURFACE HIGH WILL REMAIN ESTABLISHED OVER THE NORTHERN ROCKIES IN
   THE WAKE OF THE AFOREMENTIONED CANADIAN IMPULSE.  THIS
   HIGH...COMBINED WITH LOW PRESSURE IN AREAS NEAR THE CALIFORNIA COAST
   WILL LEAD TO A STRONG SURFACE PRESSURE GRADIENT YIELDING GUSTY WINDS
   PRIMARILY IN THE HIGHER TERRAIN AND PASSES EARLY WEDNESDAY. 
   OVERNIGHT RECOVERIES ARE EXPECTED TO REMAIN POOR...AND FUELS REMAIN
   DRY GIVEN PERSISTENT DROUGHT ACROSS THE REGION.  AN ELEVATED FIRE
   WEATHER DELINEATION HAS BEEN RETAINED TO ADDRESS THIS THREAT.

   ...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 29, 2015
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