|
U.S. & Canada 00-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 260627
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1227 AM CST Fri Dec 26 2025
Valid 261200Z - 271200Z
...Synopsis...
An upper-level ridge over the central CONUS will remain
quasi-stationary throughout the day, with an embedded speed max
traversing the ridge from the Southwest into the Central Plains.
Diurnal heating/mixing will allow this enhanced flow aloft to mix
toward the surface, resulting in sustained westerly winds near 15
mph across portions of the southern High Plains. Additionally,
downslope westerly winds near 15-20 mph should develop along the lee
of the Rockies, extending into portions of central Colorado during
the afternoon. Afternoon RH values across these regions should fall
into the lower teens amid dry/receptive fuels, promoting Elevated
fire-weather conditions.
..Karstens.. 12/26/2025
|
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 260628
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1228 AM CST Fri Dec 26 2025
Valid 271200Z - 281200Z
...Synopsis...
An upper-level ridge will remain in place along with an embedded
speed max across the central/southern Plains. The combination of lee
troughing and mixing should allow for sustained winds of 15-20 mph
to develop during the afternoon across the OK/TX Panhandles and
vicinity. Despite somewhat marginal RH values, perhaps approaching
the low to mid 20s, persistent dry conditions have led to
dry/receptive fuels, which will promote a few hours of Elevated
fire-weather conditions for this region.
..Karstens.. 12/26/2025
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 252128
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0328 PM CST Thu Dec 25 2025
Valid 271200Z - 021200Z
...Synopsis...
A mid-level jet moving into the Southwest along with lee troughing
across the Central Plains will support dry downslope flow and
potential fire weather concerns across portions of the southern High
Plains Day 3/Saturday. A positively tilted upper trough should move
and deepen into the eastern U.S. through early next week. A
corresponding strong cold front will erode the recent abnormally
warm temperatures across much of the central and eastern CONUS
through Day 6/Tuesday. Dry, post-frontal flow could support an
increased fire weather threat mainly across the Southern Plains
where minimal rainfall is expected. An evolving upper-level ridge
should bring warming temperatures and dry conditions to the West
through midweek.
...Day 3/Saturday - Southern High Plains...
Fire weather threat is likely to remain across portions of the TX/OK
Panhandles and adjacent areas owing to persistent westerly flow
aloft and breezy west-southwest winds in response to lee troughing
across the Central Plains. Some uncertainty exists regarding
magnitude of surface drying with additional cloud cover hindering
boundary layer mixing. However, with multiple preceding days of
abnormally warm temperatures and multi-week rainfall deficits, fuels
could remain receptive to spread within the breezy west-southwest
winds despite limited RH reductions. Thus, a 40 percent critical
area remains for the TX/OK Panhandles into southeast CO.
..Days 4-8/Sunday-Thursday...
Primary effective fire weather feature will be a cold front sweeping
across much of the central/eastern CONUS early next week beginning
Day 4/Sunday. Latest model guidance still depicts some inhibiting
factors that could reduce fire weather impacts. Expansive cloud
cover and some precipitation in addition to rapidly falling
temperatures within post frontal flow could limit a more significant
fire weather threat across much of the South and Southeast. Less
expected rainfall across the Southern Plains could support pockets
of drier fuels but uncertainty in rainfall distribution precludes
introduction of critical probabilities for Sunday and Monday.
..Williams.. 12/25/2025
|