Storm Prediction Center Day 1 Fire Weather Outlook

Created: Wed Nov 22 16:20:03 UTC 2017 (20171122 1700Z Day 1 FireWX shapefile | 20171122 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

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   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 221619

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   1019 AM CST Wed Nov 22 2017

   Valid 221700Z - 231200Z

   An Elevated fire weather area has been introduced across inland
   areas of southern California. 

   Surface high pressure -- located over the Great Basin -- is
   promoting low-level dry offshore flow across the inland areas of
   southern California this morning. As of 16Z, multiple surface
   observations across the coastal foothills and canyons are indicating
   sustained surface winds in excess of 15 mph (with higher gusts) in
   conjunction with RH values near 20%. These Elevated fire weather
   conditions are expected to continue through the afternoon as diurnal
   heating allows RH values to drop to near 15% and sustained surface
   winds remain around 15-20 mph (locally higher).

   ..Elliott.. 11/22/2017

   .PREV DISCUSSION... /ISSUED 1234 AM CST Wed Nov 22 2017/

   ...Synopsis...
   An amplified west-to-east, ridge-trough mid-level pattern will
   continue on Wednesday. The ridge across the Southwest and Great
   Basin will lead to warm/dry conditions, albeit with light winds.
   Across the East, despite the presence of stronger mid-level flow and
   surface-pressure gradients allowing for strong/gusty winds across
   some locations, relatively cool surface temperatures will act to
   keep relative humidity above elevated-to-critical fire-weather
   thresholds.

   ...Please see www.spc.noaa.gov/fire for graphic product...

      

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