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SPC Day 2 Fire Weather Outlook

SPC Day 2 Fire Weather Outlook

[html]SPC Day 2 Fire Weather Outlook
         
Day 2 Fire Weather Outlook Image

Day 2 Fire Weather Outlook 
NWS Storm Prediction Center Norman OK
0110 PM CDT Sun Apr 17 2022

Valid 181200Z - 191200Z

Guidance consensus has trended slightly moister across western Iowa,
with minimum RH dipping into the 25-30 percent range. Despite the
slightly higher RH and 0.25-0.5 inch rainfall accumulations within
the past week, the UNL Drought Monitor still indicates the region to
be under a moderate to severe drought, with GACC observations/fuel
charts showing ERCs exceeding the 90th percentile. The 15-25 mph
sustained northwesterly surface winds atop the very dry finer fuels
should co*pensate to support Elevated fire weather conditions. The
Elevated area across the Southwest was also expanded southeast to
reflect the latest guidance consensus. A northwest extension of the
Elevated area was also applied across the Lower Colorado River Basin
given indications of greater fuel receptiveness based on
coordination with local WFOs. Otherwise, solidly Elevated to locally
Critical conditions are expected across much of the Southwest
tomorrow. 15-20 mph sustained westerly surface winds amid 10-15
percent RH by afternoon peak heating should promote at least modest
wildfire-spread potential.

..Squitieri.. 04/17/2022

.PREV DISCUSSION... /ISSUED 0159 AM CDT Sun Apr 17 2022/

...Synopsis...
A large-scale ridge will build over the western CONUS, while modest
westerly midlevel flow persists over the Southwest. Farther east, a
strong midlevel trough will track eastward across the Middle MS
Valley, while breezy northwesterly surface winds develop across the
Middle MO Valley in its wake.

...Southwest into south-central CO...
Modest downslope flow will result in widespread 5-15 percent RH
during the afternoon, where sustained west-southwesterly surface
winds will approach 15 mph. The lack of a tighter surface pressure
gradient and modest midlevel flow should mitigate a higher-end
fire-weather threat, though elevated conditions are still expected.

...Middle MO Valley...
Sustained northwesterly surface winds near 15-25 mph will develop
amid 20-25 percent RH during peak heating. While these conditions
will be near-critical, light rainfall across the region casts
uncertainty on the overall fire-weather threat. With that said, the
dry/breezy conditions co*bined with dry fuels should support at
least elevated conditions.

...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)