|
U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 021631
Day 1 Fire Weather Outlook CORR 1
NWS Storm Prediction Center Norman OK
1031 AM CST Fri Jan 02 2026
Valid 021700Z - 031200Z
CORRECTED FOR GRAPHIC ERROR
No changes are needed to the D1 Fire Weather Outlook. See previous
discussion below for more information.
..Thornton.. 01/02/2026
.PREV DISCUSSION... /ISSUED 0144 AM CST Fri Jan 02 2026/
...Synopsis...
The large-scale pattern will consist of a western ridge and an
eastern trough on Friday. A short-wave trough will undercut the
western ridge and traverse the Southern Plains as it moves toward
the Southeast. As this trough moves east, a surface low will develop
across eastern Texas on Friday. To the west of this low, westerly
downslope flow will support gusty surface winds and modest drying.
This will support elevated fire-weather conditions across portions
of west and southwest Texas. Here, the greatest potential relative
humidity values to fall into the 20%s amidst winds in the 10-15 mph
range with stronger gusts.
|
U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 021917
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0117 PM CST Fri Jan 02 2026
Valid 031200Z - 041200Z
...NO CRITICAL AREAS...
No changes are needed to the D2 Fire Weather Outlook. See previous
discussion for more information.
..Thornton.. 01/02/2026
.PREV DISCUSSION... /ISSUED 0145 AM CST Fri Jan 02 2026/
...Synopsis...
The prevailing large-scale mid-level pattern will remain the same on
Saturday (as compared to Friday) with a western ridge and eastern
trough. The short-wave trough that will have moved across the
Southern Plains on Friday will be absorbed into the eastern US
longwave trough on Saturday. As this happens, low-level moisture
will be drawn northward into the Southeast. To the west of this
trough (across the Southern Plains), relative humidity will once
again fall into the 20%s across portions of southern and southwest
Texas, however, with the departure of the mid-level wave, winds
should be light enough to preclude fire-weather highlights.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 022142
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0342 PM CST Fri Jan 02 2026
Valid 041200Z - 101200Z
Mid-level flow aloft will overspread the northern/central Rockies
with short-waves traversing the crest of the central US ridge
through the extended period. Eventually the ridge will break down,
with potential for ejection of a deeper wave across Southwest into
the Plains by the end of the period. Widespread rainfall will be
common across the western US/eastern US during this time period,
with little to no precipitation extending into the central/southern
High Plains. As such, multiple periods of interest are expected to
produce fire weather concerns.
...D3/Sunday through D4/Monday - Central/Southern High Plains...
On D3/Sunday, aforementioned westerly flow aloft will increase
across the northern/central Rockies. As a result of increasing
westerly gradients and surface low development, an increase in
downslope flow is expected across portions of the Front Range. There
remains some disconnect in deterministic model runs in the strongest
winds with the lowest relative humidity, with the strongest winds
across Wyoming into Nebraska and the driest conditions across
eastern Colorado into western Kansas.
Given the pattern, confidence is increasing that winds across the
immediate Front Range and downslope favored zones will likely be
higher than progged with lower relative humidity than in current
guidance, with sustained westerly flow 15-20 mph gusting 30+ mph. It
is also likely that through the higher elevations, winds may be even
stronger. Fuels across portions of northeastern Colorado into
Wyoming continue to be historically dry (seasonally above average
and approaching maximum dryness for the time period). As such, a 40
percent area was introduced along the Front Range and into
southeastern Wyoming.
...D5/Tuesday - Southern/Central Plains...
Upper-level flow will shift southward D5/Tuesday, with increase in
downslope flow expected to extend into the Texas/Oklahoma
Panhandles. Fuels across these regions remain critically dry. A 40
percent area was maintained with this outlook across eastern New
Mexico into the Oklahoma/Texas Panhandle and extend into
southeastern Colorado. Some consideration was given to a small 70
percent region across the Texas Panhandle. For now, have maintained
the 40 percent with some disagreement remaining in exactly how low
relative humidity will be.
Beyond D5/Tuesday, periods of locally Elevated conditions may occur
across portions of the Central/Southern Plains as flow aloft remains
strong. However, surface pressure gradients weaken D6/Wednesday with
a building surface high. A stronger wave may eject from the
Southwest on D7/Thursday to D8/Friday. At the same time, a
stationary front may evolve across the eastern US into the southern
Plains, bringing several rounds of precipitation. It is likely that
some area of the central/southern High Plains will see additional
increased fire weather potential. For now, model spread on features
remains too high to include areas at this time.
..Thornton.. 01/02/2026
|
|