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FNUS22 KWNS 271855
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0155 PM CDT Thu Jul 27 2017

Valid 281200Z - 291200Z

No changes are necessary to the ongoing forecast. While a very
weak/sheared vorticity maximum will support thunderstorm development
along higher terrain across portions of Nevada, they should
primarily be wet and confined to areas of less receptive fuels.
Therefore, an isolated dry-thunderstorm area is not introduced for
parts of the Great Basin Friday.

..Picca.. 07/27/2017

.PREV DISCUSSION... /ISSUED 0243 AM CDT Thu Jul 27 2017/

...Synopsis...
As a strong deep-layer cyclone approaches the British Columbia
coast, a series of lower-amplitude troughs to the south and east of
the cyclone is expected to move into the Northwest and northern
Rockies. At the surface, a cold front will move across portions of
the northern Rockies and the northern High Plains as a surface low
approaches Hudson Bay. Portions of California and the Great Basin
will remain hot and dry.

...Interior Northwest into the Northern Rockies -- Dry Thunderstorm
Potential...
As a low-amplitude trough approaches the Pacific Northwest, isolated
to widely scattered thunderstorms are expected from portions of the
interior Northwest into the Northern Rockies. At this time, as with
the previous system, it appears that thermodynamic profiles will
support a mix of wet and dry thunderstorms, with some risk of
ignitions in areas of dry fuels.

...Northern Montana -- Elevated Wind/RH Threat...
Dry westerly flow in the wake of a frontal passage will support the
potential for near-critical RH across portions of northern Montana.
There is some spread in model guidance related to the strength of
the low-level flow in this region, but given the potential for wind
speeds in the 15-20 mph range at peak heating, an elevated fire
weather threat appears possible.

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

$$


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