U.S. Day 1 Fire Weather Outlook
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 101526
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1026 AM CDT Thu Jul 10 2025
Valid 101700Z - 111200Z
The previous forecast remains on track, with only minor changes made
to the Elevated highlights to reflect the latest guidance consensus.
..Squitieri.. 07/10/2025
.PREV DISCUSSION... /ISSUED 1057 PM CDT Wed Jul 09 2025/
...Synopsis...
A midlevel trough will advance eastward from the Great Basin into
the central Rockies during the day. In the base of the trough,
enhanced deep-layer westerly flow will overspread a diurnally
deepening boundary layer across the Greater Four Corners region
during the afternoon. As a result, an expansive overlap of 10-15
percent RH and 15-20 mph sustained westerly surface winds will yield
elevated to locally critical fire-weather conditions across the
region.
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U.S. Day 2 Fire Weather Outlook
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 101753
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1253 PM CDT Thu Jul 10 2025
Valid 111200Z - 121200Z
...NO CRITICAL AREAS...
An isolated dry thunderstorm delineation was added to portions of
western Colorado for tomorrow (Friday). Thunderstorms should develop
over the higher terrain as upper-support glances the region from the
north. The storms should be initially dry before transitioning to a
more wet phase as they advance toward the central High Plains, where
greater moisture/buoyancy will be present. Fuels are dry across
western Colorado, with ERCs exceeding critically dry thresholds, and
fuel moisture dipping into the single digits amid a severe drought
and more than a month without appreciable rainfall. As such, any
thunderstorms developing over the drier fuel beds will have
considerable ignition potential, warranting the introduction of
isolated dry thunderstorm highlights.
..Squitieri.. 07/10/2025
.PREV DISCUSSION... /ISSUED 1057 PM CDT Wed Jul 09 2025/
...Synopsis...
A large-scale ridge will build over the western CONUS on Friday,
resulting in a warming trend and lighter surface winds. Outside of
terrain-favored areas, this will generally limit fire-weather
concerns regionally compared to previous days.
U.S. Day 3-8 Fire Weather Outlook
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 101933
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0233 PM CDT Thu Jul 10 2025
Valid 121200Z - 181200Z
Upper ridging will develop across the western CONUS through the
weekend, before a mid-level trough traverses the Pacific Northwest
and northern Rockies by early next week. Thereafter, upper ridging
will briefly set in during the middle of next week before another
mid-level trough impinges on the Northwest before next weekend. The
net result will be a warming and drying trend across much of the
Interior West into the Pacific Northwest, which will augment the
curing of fuels.
The passage of the first mid-level trough will provide enough upper
support to induce dry/windy conditions across portions of the
Cascades on Day 4 (Sunday), and then farther east over the Snake
River Plain Days 5-6 (Monday-Tuesday), where 40 percent Critical
probabilities have been introduced. Isolated dry thunderstorms could
occur across portions of the Pacific Northwest into the northern and
central Rockies early next week, but the specifics of timing and
coverage (given model differences) are too unclear to warrant dry
thunderstorm probabilities at this time. Furthermore, considerable
spread exists among medium-range guidance in the placement and
timing of the next mid-level trough late next week. Given these
uncertainties, probabilities for dry/windy conditions and dry
thunderstorms have been withheld.
..Squitieri.. 07/10/2025
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