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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
0200 PM CDT Thu Jul 28 2022

Valid 291200Z - 301200Z

An isolated dry thunderstorm area has been added to portions of
southwestern Oregon into far northern California. Though upper
support is weak, upslope flow of a marginally unstable airmass along
the western slopes of the southern Cascades will promote isolated,
high based thunderstorm development. Though a gradient in fuel
receptiveness exists across the Cascades, current fuels are modestly
to highly receptive to wildfire spread, necessitating isolated dry
thunderstorm highlights. Otherwise, the previous forecast (see
below) remains on track, with minor changes made to the ongoing
highlights to reflect the latest guidance consensus.

..Squitieri.. 07/28/2022

.PREV DISCUSSION... /ISSUED 0200 AM CDT Thu Jul 28 2022/

...Synopsis...
Similar to Day 1/Thursday, a large-scale ridge will persist over the
northwestern CONUS, where widespread 10-15 percent minimum RH is
expected. Along the northeastern periphery of the ridge, a subtle
midlevel impulse will cross the northern Rockies, which co*bined
with sufficient midlevel moisture/instability will support isolated
high-based thunderstorms along the higher terrain in southeast ID,
southwest MT, and far western WY. Given highly receptive fuels over
these areas, isolated lightning-induced ignitions will be possible.

Farther west over eastern OR, southwest ID, and northern NV, breezy
northerly surface winds near 15 mph will overlap widespread 10-15
percent RH during the afternoon. These conditions will yield
elevated fire-weather conditions during the afternoon -- especially
over terrain-favored areas.

...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)