|
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 270526
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1126 PM CST Fri Dec 26 2025
Valid 271200Z - 281200Z
...Synopsis...
An upper-level ridge over the central CONUS will gradually shift
east throughout the day, while an upper-level trough enters the
Northern Rockies and impinges on western periphery of the ridge.
This process will promote a tightening of the height gradient aloft
and enhancement of the flow, from the southern High Plains into the
central Great Plains. At the surface, a combination of lee
cyclogenesis and diurnally driven mixing west of a developing dry
line should allow for a few hours of Elevated fire-weather
conditions to develop. Sustained winds of 15-20 mph and RH values
into the low to mid 20s will be possible across portions of the
TX/OK Panhandles and vicinity where prolonged arid conditions have
led to dry/receptive fuels.
..Karstens.. 12/27/2025
|
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 270528
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1128 PM CST Fri Dec 26 2025
Valid 281200Z - 291200Z
...Synopsis...
An upper-level trough over the central/northern High Plains will
shift east into the Great Lakes and Ohio Valley region throughout
the day. At the surface, an area of low pressure will track from the
central Great Plains to the Great Lakes region. In its wake, a cold
front will sweep across much of the central CONUS, replacing near
record warmth with more seasonal temperatures.
Model guidance suggests there could be a window of up to a few hours
supporting Elevated fire-weather conditions associated with the
pre/post cold front passage, mainly across portions of the southern
High Plains. Pre-frontal residual dry air and diurnally driven winds
should be present ahead of the front by early afternoon. Then,
temperatures should remain above the minimum thresholds behind the
front for another 2-3 hours amid gusty northwest winds despite
rising RH values. Therefore, Elevated highlights have been
introduced for a small portion of West Texas and far southeast New
Mexico, confined to areas where fuels appear most receptive. The
frontal passage may at least temporarily exacerbate any ongoing
fires across the region as well.
..Karstens.. 12/27/2025
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 262111
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0311 PM CST Fri Dec 26 2025
Valid 281200Z - 031200Z
A longwave mid-level ridge has been in place over the central CONUS
for the last several days. By early D3/Sunday, this feature will
begin to move eastward with a shortwave trough digging across the
northern and central Rockies on the western periphery of the ridge.
This shortwave trough will move eastward through D4/Monday, pushing
a cold front southward across the central and eastern CONUS.
Brief Elevated fire weather conditions may occur across portions of
west Texas and the Permian basin on Sunday with the cold front
passage, however rapidly cooling temperatures and increasing RH
behind the front is expected to inhibit a long-duration risk.
Additional fire weather risk may be present in the post-frontal
regime across central Texas on Monday afternoon. However, several
factors preclude introduction of highlights in this area, including
cool temperatures and uncertainties regarding cloud cover, which
could keep temperatures cooler and RH higher. Additionally, fuels in
the area are not particularly receptive to fire spread, and
precipitation early in the day may reduce susceptibility even
further.
By D5/Tuesday, a longwave trough is expected to become established
over the eastern half of the CONUS and remain there through the end
of the period, promoting surface high pressure and light winds
across the southern Plains. A shortwave trough embedded in the
northwesterly flow may push another cold front southward sometime
around D6/Wednesday or D7/Thursday, and this may carry some fire
risk with it, as well. However, confidence in any particular outcome
is not high enough to warrant highlights at this time.
..Supinie.. 12/26/2025
|