Skip Navigation Links 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

< Day 2 FW Outlook    
Day 3-8 Fire Weather Outlook Issued on Jul 25, 2017
Updated: Tue Jul 25 20:00:03 UTC 2017  (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
Population Cities CWAs Interstates Counties FEMA Regions

Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
D3Thu, Jul 27, 2017 - Fri, Jul 28, 2017 D6Sun, Jul 30, 2017 - Mon, Jul 31, 2017
D4Fri, Jul 28, 2017 - Sat, Jul 29, 2017 D7Mon, Jul 31, 2017 - Tue, Aug 01, 2017
D5Sat, Jul 29, 2017 - Sun, Jul 30, 2017 D8Tue, Aug 01, 2017 - Wed, Aug 02, 2017
(All days are valid from 12 UTC - 12 UTC)
   FNUS28 KWNS 251957

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0257 PM CDT Tue Jul 25 2017

   Valid 271200Z - 021200Z

   Through the weekend, a mid/upper ridge initially anchored over New
   Mexico will slowly build west towards the Great Basin. Along its
   northwestern periphery, weak impulses will continue to traverse the
   Pacific Northwest and northern Rockies. Thereafter, the ridge will
   amplify across much of the western US, with stronger westerly flow
   generally relegated to the Canadian border and points north. As a
   result, conditions should gradually turn warmer/drier across parts
   of the Inter-Mountain West.

   ...Dry-Thunderstorm Threat...
   The closed mid/upper low currently along the northern California
   coast will open and lift northeast through the end of the week, as
   it's absorbed by stronger west/southwesterly flow over the northern
   Rockies. Thunderstorm chances on D3/Thu will generally be confined
   to areas along/ahead of this system, and the 10% area is maintained
   across the northern Rockies. On D4/Fri, while somewhat drier
   mid-level air may have overspread parts of the region (in the wake
   of the previous system), another weak shortwave trough may approach
   from the eastern Pacific. In turn, the potential for isolated
   dry-lightning strikes could persist, and a 10% area is introduced
   from eastern Oregon to western Montana.

   ...Gusty Winds/Low RH Threat...
   A shortwave trough will transit from Vancouver Island to the
   Canadian Rockies on D3/Thu, with an attendant surface front crossing
   Washington during the day. Behind this front, breezy winds and low
   RH should materialize, supporting at least an elevated fire-weather
   threat. Therefore, the ongoing 40% area is maintained in the lee of
   the Cascades for D3/Thu. The front will continue east through
   D4/Fri, with dry/breezy conditions possible across northern/central
   Montana during the afternoon and evening. With dry fuels likely
   remaining in place here, the 40% area is maintained with some
   spatial adjustments to account for recent guidance trends.

   ..Picca.. 07/25/2017

   ...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.
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
Page last modified: July 25, 2017
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities