SPC Day 2 Fire Weather Outlook
[html]SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0145 AM CDT Thu Jul 14 2022
Valid 151200Z - 161200Z
...Synopsis...
A stagnant upper-air regime will continue to limit the potential for
widespread fire weather threats for Friday. Regional concerns are
expected to emerge across northwest Nevada and southwest Kansas
Friday afternoon, but will likely remain limited in nature owing to
weak flow aloft. Dry thunderstorms will remain possible across
eastern NV into far western UT, but an increasing probability of
wetting storms limits confidence in the dry-lightning threat.
...Northwest Nevada...
Another day of modest southwesterly flow is expected over the
northern Sierra Nevada. This will allow for breezy and dry downslope
conditions across northwest NV and into far southeast OR/southwest
ID. Winds near 15 mph appear most likely with RH values as low as
10% possible. Given the limited rainfall chances through Friday
afternoon and antecedent dry fuels, elevated conditions appear
probable. Breezy winds through the upper Snake River Plains in
eastern ID may allow for areas of elevated conditions, but modest
confidence in the wind forecast coupled with recent rainfall
preclude an eastward expansion of the risk area.
...Southwest Kansas...
A stalling surface trough/cool front across the central Plains will
allow for another day of southerly winds across western KS. Most
guidance suggests that sustained winds near 15 mph are likely, but
given the co*mon low bias in wind speeds under such dry return-flow
patterns, winds between 15-20 mph appear more likely with gusts up
to 25-30 mph. Hot temperatures near 100 F will yield afternoon RH
values between 20-25% over a region with drying grasses, which
should support elevated fire weather conditions.
...Dry Thunderstorms...
Lingering monsoonal moisture on the western periphery of the Four
Corners ridge will maintain thunderstorm chances through Friday
afternoon for eastern NV and far western UT. Forecast soundings
continue to show around a 2 km depth of dry sub-cloud layers, but a
slight increase in PWAT values to 0.8 to 1.2 inches is noted in most
solutions. While a few dry thunderstorms are possible, this
bolstered moisture hints at an increasing propensity for wet
thunderstorms. Latest ensemble and hi-res deterministic solutions
support this idea with a stronger QPF signal for Friday afternoon
co*pared to previous days. As such, no risk highlights are
introduced, though thermodynamic conditions will continue to be
monitored.
..Moore.. 07/14/2022
...Please see www.spc.noaa.gov/fire for graphic product...
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Source: SPC Day 2 Fire Weather Outlook (http://ht**://www.spc.noaa.gov/products/fire_wx/fwdy2.html)