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U.S. Day 1 Fire Weather Outlook

   ZCZC SPCFWDDY1 ALL
   FNUS21 KWNS 281556

   Day 1 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   1056 AM CDT Fri Aug 28 2026

   Valid 281700Z - 291200Z

   No changes were made to the existing drawn areas. The extent of the
   existing Elevated wind/RH areas remain on track with the latest
   forecast guidance. The most uncertain part of the forecast remains
   the area of Isolated Dry Thunderstorms over portions of west-central
   CA. While plenty of moisture and lift (via both dynamic forcing from
   the approaching trough and mechanical forcing from terrain) exists
   from the plume of moisture being drawn northeastward, the biggest
   uncertainty remains the magnitude and areal extent of instability.
   While areas along the northern periphery of the aforementioned
   moisture plume are likely to see too much cloud cover, areas along
   the southern periphery stand the best chance at experiencing
   isolated thunderstorm activity late this afternoon and evening. The
   limited coverage, fast storm motions, low-level dryness, and dry
   fuels, are expected to balance the higher moisture content streaming
   through the mid/upper levels.

   ..Stearns.. 08/28/2026

   .PREV DISCUSSION... /ISSUED 1217 AM CDT Fri Aug 28 2026/

   ...Synopsis...
   ...Northern California into southeast Oregon...
   Broad troughing across the West Coast will promote modest surface
   trough development from southeast Oregon into portions of the
   Sacramento Valley. Surface winds of 15-20 mph and afternoon RH of
   10-20% will combine with very dry fuels to bring elevated fire
   weather concerns.

   ...Northwest Montana...
   A modest mid-level jet will persist across the northern Rockies into
   the afternoon. This feature, along with a surface trough to the
   east, will bring dry, downslope winds to the lee of the terrain in
   northwest Montana. Winds of 15-20 mph (locally higher in
   terrain-favored areas) and 10-20% RH will promote elevated fire
   weather during the afternoon.

   ...Southern California Coastal Ranges into San Joaquin Valley...
   Moisture from the remnants of a tropical system will be drawn
   northward by the trough off the West Coast. This increase in
   moisture at midlevels and subtle lift from the terrain/trough will
   contribute to isolated thunderstorm potential. Storm motions will be
   fast enough and low levels dry enough to limit rainfall
   accumulations where storms can develop. Uncertainty in storm
   coverage remains high, but dry fuels would support lightning
   ignitions.

   ...Southern California Transverse Ranges...
   A weak offshore flow regime will bring 10-15 mph (locally higher)
   winds within the higher terrain. Given the very hot temperatures and
   dry fuels, fire weather will be elevated during the afternoon.
      

U.S. Day 2 Fire Weather Outlook


   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 281910

   Day 2 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0210 PM CDT Fri Aug 28 2026

   Valid 291200Z - 301200Z

   An area of Elevated wind/RH was added over western OK and northern
   TX where criteria will be met under southwesterly winds amid hot and
   dry (afternoon RHs near 15-25%) surface conditions. A deeply mixed
   boundary layer will support sustained winds up to 15-20 mph reaching
   the ground across western OK and northern TX. Even though recent
   precipitation has occurred over portions of the drawn area, long and
   short term drought continues across the area, leading to ERC/BI
   values exceeding their 90th percentiles.

   The existing Elevated fire weather area will remain in place across
   portions of southeast OR, northwest NV, and surrounding areas. The
   latest forecast guidance has trended the combined wind/RH threat
   slightly farther south, necessitating a slight reduction along the
   northern periphery of the drawn area. However, given recent
   monsoonal influence and a current plume of moisture moving over the
   region, there is a sharp gradient in fuels receptivity over central
   portions of NV that precluded areas further south/east from being
   included in the drawn area.

   Over portions of north-central/northwest MT, potential for mostly
   wet thunderstorms will exist during the afternoon of Day 2/Saturday.
   Given the cooler (below normal) temperatures, increased storm
   coverage, relatively slow storm motions, and precipitable water
   values above 3/4 of an inch, the threat of dry thunderstorms remains
   low.

   ..Stearns.. 08/28/2026

   .PREV DISCUSSION... /ISSUED 1218 AM CDT Fri Aug 28 2026/

   ...Synopsis...
   The broad western trough will evolve into a compact upper low within
   the Pacific Northwest on Saturday. As this feature progresses
   eastward, stronger mid-level winds will overspread the Northwest
   into parts of the Great Basin. With a deeper surface low developing
   in the northern Great Basin, winds will increase to 15-20 mph near a
   surface boundary in southeast Oregon/northwest Nevada. Fuels remain
   quite dry in these areas. RH of 10-20% will support an elevated fire
   weather threat during the afternoon.


U.S. Day 3-8 Fire Weather Outlook


   ZCZC SPCFWDD38 ALL
   FNUS28 KWNS 282143

   Day 3-8 Fire Weather Outlook  
   NWS Storm Prediction Center Norman OK
   0443 PM CDT Fri Aug 28 2026

   Valid 301200Z - 051200Z

   ...Synopsis...
   A series of mid-level troughs will continue impacting the Pacific
   Northwest and neighboring areas of the western CONUS throughout the
   Extended Outlook time frame. This will leave the northwestern
   quadrant of the CONUS under periodically strong southwest to
   westerly flow into early next week. Embedded disturbances will
   continue to move through the persistent troughing and along the
   northern periphery of the flattening/displaced upper-level ridge
   centered over the southern Plains. This activity will deflect
   monsoonal moisture to the south and east. Low predictability and
   poor agreement among ensemble clusters precludes additional
   probabilities beyond Day 5/Tuesday. The general consensus does favor
   continued well below normal temperatures across the western third of
   the CONUS mid-to-late next week along with increasing chances for
   multiple days of accumulating rainfall over a good portion of the
   Pacific Northwest.

   ...Southern Plains...
   Over the southern Plains, the continued hot and dry period
   exacerbating existing drought conditions will allow for gusty
   southwesterly low/mid level flow to impact the region amid
   underlying very dry fuels. Continuing through Day 3/Sunday and Day
   4/Monday, deep boundary layer mixing amid continued above normal
   temperatures (and dry RHs falling to near 15-20%) will support
   southerly winds sustained at 15-20 mph at the surface. Thus, 40%
   Critical probabilities have been introduced for Day 4/Monday and Day
   5/Tuesday over portions of southern KS, western OK, and the TX
   Panhandle.

   ...Northwest, Northern Great Basin, and Northern California...
   Drier southwest flow aloft associated with perpetual troughing over
   the northwest CONUS will promote continued fire weather concerns
   into early next week. 40% Critical probabilities have been
   maintained with minor adjustments for Day 4/Monday and Day 5/Tuesday
   over northeastern California, northwestern Nevada, and southeastern
   Oregon. West to southwest sustained winds of 15-20 mph and afternoon
   RHs near 15-20% will bring near-daily elevated fire weather concerns
   to this region. Well below normal temperatures will moderate the
   threat slightly, but conditions will remain conducive to wildfire
   spread until accumulating precipitation occurs.

   ..Stearns.. 08/28/2026
      




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