Fire Weather Outlook Discussion
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FNUS22 KWNS 281651

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1150 AM CDT Fri Jul 28 2017

Valid 291200Z - 301200Z

No changes have been made to the ongoing forecast.

..Cohen.. 07/28/2017

.PREV DISCUSSION... /ISSUED 0131 AM CDT Fri Jul 28 2017/

Upper ridging centered over the Four Corners is expected to build
into more of the northern Great Basin, northern Rockies, and
northern Plains during the period while upper troughing deepens over
the eastern CONUS. A weakening shortwave trough will contribute to
the potential for dry thunderstorms across the northern Great Basin.
Generally weak flow aloft and a relaxed surface pressure gradient
over areas where fuels are dry will keep the wind-driven fire
weather threat low.

...Northern Great Basin -- Dry Thunderstorms...
Upper ridging will build into the region, acting to weaken a
slow-moving shortwave trough tracking eastward into southern ID.
Even with the anticipated weakening, this shortwave trough will
provide the impetus for isolated thunderstorm development. A deeply
mixed boundary layer, warm and dry surface conditions, and only
modest mid-level moisture will support a predominately dry
thunderstorm mode. These dry thunderstorms amidst dry fuels will
support increased fire danger.

...Please see for graphic product...

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