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Topic: SPC Day 3-8 Fire Weather Outlook (Read 23 times) previous topic - next topic

SPC Day 3-8 Fire Weather Outlook

SPC Day 3-8 Fire Weather Outlook

[html]SPC Day 3-8 Fire Weather Outlook
         
Day 3-8 Fire Weather Outlook Image

Day 3-8 Fire Weather Outlook 
NWS Storm Prediction Center Norman OK
0442 PM CDT Mon Aug 05 2024

Valid 071200Z - 131200Z

The extended period will be characterized primarily by modest
mid-level zonal flow across the Northwest and Northern Rockies, as
well as warming and drying across much of the Western U.S. beneath a
mid-level anticyclone centered over the Great Basin. Some chances
for isolated dry thunderstorms will exist early on in the forecast
period, but predictability of thunderstorm occurrence later on in
the period will be low. Mid-level zonal flow and a shortwave trough
are expected to bring dry and windy conditions to portions of the
Northwest by D6/Saturday.

...Dry Thunder...
Monsoonal moisture will persist over the Great Basin, resulting in
chances for dry thunderstorms across eastern UT, western CO, and far
southern WY on D3/Wednesday and D4/Thursday. By D4/Thursday, modest
PWAT values of 0.6-0.75 in will overspread portions of far eastern
Idaho into southern Montana, resulting in some chances for dry
thunderstorms further north into those regions. Some modification to
these areas may be needed due to wetting rainfall in the preceding
days. Dry thunderstorm chances could persist into D6/Saturday and
D7/Sunday, but predictability remains too low at this time to
highlight any specific areas.

...Dry/Windy...
Modest zonal flow will support some Elevated to locally Critical
fire-weather conditions across the Snake River Plain in Idaho on
D3/Wednesday. Afterwards, flow will remain generally weak until
D6/Saturday, when Euro and GFS forecasts signal an intensification
of the geopotential height gradient over Idaho owing to an
approaching shortwave trough, increasing mid-level flow. Dry and
windy conditions beneath this enhanced flow could result in Critical
fire-weather conditions, and these conditions may persist into
D7/Sunday. However, uncertainties remain in the magnitude of the
flow and resulting surface winds, so highlights have been reserved
for D6/Saturday, where there is better agreement in critical
conditions.

..Halbert/Lyons.. 08/05/2024

...Please see www.spc.noaa.gov/fire for graphic product...


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Source: SPC Day 3-8 Fire Weather Outlook (http://ht**://www.spc.noaa.gov/products/exper/fire_wx/)