Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
326 AM EDT Sat Jun 11 2022

Valid 12Z Sat Jun 11 2022 - 12Z Mon Jun 13 2022

...Dangerous heat continues from California to the Southern Plains today...

...Heavy rainfall and flooding potential to continue through the weekend
across the Pacific Northwest and Northern Rockies...

...Strong to severe storms possible from the northern Rockies to the lower
Missouri Valley today...

Excessive Heat Warnings and Heat Advisories remain in place across much of
interior California, the Desert Southwest, and the southern Great Plains. 
Temperatures across these regions will remain well above-normal today,
with daytime temperatures forecast to reach the triple digits, setting new
daily records in many locations.  For Northern California, relief is
expected to arrive on Sunday as a pair of Pacific cold fronts bring much
cooler temperatures into the region.  This cooler airmass will continue to
spread farther south and east through early next week, with well
below-normal temperatures expected across the Pacific Northwest, Northern
California, the Great Basin, and the northern Rockies on Monday.  However,
farther east the heat will remain, with above-normal temperatures forecast
across the Plains and Midwest through early next week.

Dry conditions, increasing winds, and the continuing heat ahead of the
front will likely contribute to elevated to critical fire weather
conditions across portions of the Great Basin and the Southwest on Sunday.
 Red Flag Warnings have been raised for much of southern Utah and
southwestern Colorado, where conditions on Sunday are likely to promote
extreme fire behavior.

In addition to bringing cooler temperatures, the previously noted Pacific
fronts are forecast to bring widespread precipitation across the Northwest
and northern Rockies, including rounds of heavy rainfall through the
weekend.  These rains, in addition to melting snow are likely to produce
rises along the region's rivers and streams.  Flood Advisories and Flood
Watches currently cover a large portion of Washington, Oregon, northern
Idaho, and western Montana.  A Winter Storm Watch is in effect for the
West Glacier Region and the Northern Rocky Mountain Front in northwestern
Montana, where several inches of heavy wet snow are possible for
elevations above 5000 feet.

Unsettled weather is expected east of the Rockies as well, with showers
and thunderstorms developing from the northern Rockies into the middle and
lower Missouri Valley later today into tonight.   Some of these storms may
become strong to severe, with damaging winds, large hail, and an isolated
tornado possible.  Isolated to scattered severe thunderstorms, producing
damaging winds and large hail, are expected to occur across portions of
the northern and central Plains on Sunday.  Severe weather is also
possible for parts of the Midwest, Ohio Valley, and the Mid-Atlantic.

Pereira

Graphics are available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php