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< Day 2 FW Outlook    
Day 3-8 Fire Weather Outlook Issued on Sep 29, 2020
Updated: Tue Sep 29 21:35:05 UTC 2020  (Print Version)
Note: Fire weather probabilistic information in MS-Word or PDF.
Note: Through September 29, 2015 the SPC will issue Experimental Probabilistic Fire Weather Dry Thunder and Strong Wind Outlooks for Days 3 to 8 with individual web graphics. Mouse over or click on the tabs above the graphic to view daily Probabilistic Dry Thunder (DryT) and Strong Wind (Wind) Fire Weather Outlooks. Please read the Product Description Document (PDD) and provide feedback using this link: "
Categorical D3-8 FW Otlk D3 D4 D5 D6 D7 D8
Exp. DryT/LowRH/Wind D3 D4 D5 D6 D7 D8
 Pop.  Cities  CWAs  RFCs  Interstates  Counties  ARTCC  FEMA Regions

Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
D3Thu, Oct 01, 2020 - Fri, Oct 02, 2020 D6Sun, Oct 04, 2020 - Mon, Oct 05, 2020
D4Fri, Oct 02, 2020 - Sat, Oct 03, 2020 D7Mon, Oct 05, 2020 - Tue, Oct 06, 2020
D5Sat, Oct 03, 2020 - Sun, Oct 04, 2020 D8Tue, Oct 06, 2020 - Wed, Oct 07, 2020
(All days are valid from 12 UTC - 12 UTC)
   FNUS28 KWNS 292131

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0431 PM CDT Tue Sep 29 2020

   Valid 011200Z - 071200Z

   Upper-level ridging over the West Coast will dominate the overall
   pattern through the extended forecast period. Very hot, dry, and
   unstable conditions are expected underneath the ridge, while cooler
   but, dry and breezy conditions are expected to the east across the

   ...West Coast...
   With ridging firmly in place over the West Coast, hot, dry and
   unstable conditions are expected over much of California. With the
   ridge continuing to strengthen through the week, synoptic winds are
   forecast to decrease substantially through the next several days.
   Despite the lack of stronger background winds, the development of a
   surface thermal pressure trough will likely enhance surface winds
   through the afternoon hours. This and terrain favored areas should
   support stronger down valley flow and locally elevated to critical
   fire weather conditions through the weekend. Periodic offshore flow
   may also develop, with remnant offshore pressure gradients across
   portions of southern California.

   Heading into the weekend, a weak shortwave trough will move over the
   northern tip of the ridge, flattening it somewhat. This should bring
   some onshore flow in across portions of the West Coast. A brief
   respite with higher humidity and weaker winds is expected. However,
   localized fire weather conditions will likely remain as the ridge
   rebuilds quickly early next week.

   ...Central and Northern Plains...
   To the east of the ridge, gusty northwest flow will remain anchored
   over the central US keeping elevated fire weather concerns in the
   forecast. A more significant shortwave trough on Day5/Saturday will
   support enhanced mixing in a dry post frontal airmass. This may
   result in elevated and locally critical fire weather conditions
   despite the cooler temperatures.

   ..Lyons.. 09/29/2020

   ...Please see for graphic product...


Fire Wx Graphics | Links | Product Info | Fire Weather Composite Maps (updated 4 times daily)

To retrieve previous Day 3-8 FireWX outlooks, type in the date you wish to retrieve in YYMMDD (e.g., 060205 for Feb. 5, 2006).
Data available since January 1, 2006.
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Page last modified: September 29, 2020
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