U.S. & Canada 12-UTC 48 Hour Surface Smoke Forecast
Map is in operation from early April through October 31
U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 041517
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1017 AM CDT Fri Apr 04 2025
Valid 041700Z - 051200Z
...NO CRITICAL AREAS...
No changes are necessary, and please see the previous discussion.
..Nauslar.. 04/04/2025
.PREV DISCUSSION... /ISSUED 0147 AM CDT Fri Apr 04 2025/
...Synopsis...
The mid-level flow pattern through the day on Friday will be highly
amplified with a deep trough across the western CONUS and a broad
ridge across the east. This should lead to scattered precipitation
across parts of the southern Rockies and widespread precipitation
across the southern Plains. There may be some brief, localized
Elevated fire weather conditions across portions of southwest New
Mexico, where fuel ERCs are at the 90th percentile. Otherwise, fire
weather concerns should be minimal.
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 040647
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0147 AM CDT Fri Apr 04 2025
Valid 051200Z - 061200Z
...NO CRITICAL AREAS...
...Synopsis...
A deep mid-level shortwave trough over the western CONUS will slowly
move eastward during the day on Saturday. Precipitation accompanying
this trough is expected to fall across parts of the southern Rockies
as well as the southern Plains, which should keep fire concerns
minimal.
..Supinie.. 04/04/2025
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 032134
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0434 PM CDT Thu Apr 03 2025
Valid 051200Z - 111200Z
Widespread precipitation and cooler temperatures accompanying an
active trough pattern will mitigate fire weather concerns across the
eastern U.S., as well as portions of the Southern Plains through the
forecast period. An upper-level ridge, supporting dry and warmer
than normal temperatures across the Western U.S., is expected to
linger into early next week, though surface winds will remain light.
Mid-level ridging transitions into a more zonal flow pattern
beginning D6 (Sunday). The potential for stronger leeward
downsloping winds emerges late in the forecast period across leeward
northern Rockies locations, as northwest flow increases under an
amplifying upper ridge across the western U.S. However, some
precipitation in the Northern Plains increases the uncertainty in
emergent Critical fire weather conditions during this time.
..Squitieri/Williams.. 04/03/2025
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