732 
FXUS01 KWBC 120804
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 AM EDT Sun Jul 12 2026

Valid 12Z Sun Jul 12 2026 - 12Z Tue Jul 14 2026

...Dangerous heat reaching its peak today from the Great Basin to
the northern Plains with all-time record highs possible...

...Threat of heavy rain today across the southern Appalachians to
the Carolinas will shift to the central Gulf Coast and across
central Texas Monday into Tuesday...

An intensifying upper-level high centered over the western U.S. is
working in concert with an upper-level trough digging toward the
Pacific Northwest to bring anomalous heat from the Great Basin to
the northern Plains.  This heatwave is expected to peak this
afternoon when triple-digit high temperatures will be common along
this corridor.  In fact, a few all-time high temperature records
will be challenged (including the all-time high of 107 at Salt
Lake City, UT, and 108 at Billings, MT).  If you will be situated
within any of these areas forecast to experience extreme heat,
stay hydrated, take frequent breaks and limit outdoor activities
if possible.  A cold front will begin to bring cooler air eastward
from the Pacific Northwest into Montana later today, while
anomalous heat soaring well into the 100s is forecast for the
Northern Plains early this week.

Meanwhile, repeated rounds of showers and thunderstorms are
expected to continue today across the southern Appalachians to the
Carolinas as a couple of low pressure waves undulate along a
slow-moving front.  The threat of heavy rain associated downpours
from thunderstorms continues to pose a slight risk of flash
flooding today along this corridor of the eastern U.S.  By Monday,
the threat of flash flooding is forecast to lessen across the
Mid-Atlantic although scattered heavy downpours remain possible
over interior Southeast.  Meanwhile, heavy rain and flash flooding
threats will shift toward the central Gulf Coast and central Texas
on Monday into Tuesday as Gulf moisture will remain in place near
the tail end of the stationary front.  Farther west, some
monsoonal thunderstorms are expected to emerge across southern
Arizona into New Mexico, which could lead to a few instances of
flash flooding over the next several days.

Kong


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




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