222 
FXUS01 KWBC 120738
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
336 AM EDT Wed Aug 12 2026

Valid 12Z Wed Aug 12 2026 - 12Z Fri Aug 14 2026

...Dangerous heat continues across the Central Plains and
Southeast, but cooler temperatures soon for the Intermountain West
and Northern Plains...

...Severe thunderstorm and heavy rainfall threats continue across
the Plains, Midwest, Ohio Valley, and central Appalachians the
next couple of days...

Oppressive heat will continue from the Central Plains to the
Southeast this week as intense heat dome originating from the
Southwest builds over the next few days. Many areas will see their
hottest temperatures of the year so far as temperatures climb into
the upper 90s and triple digits, leading to heat indices of 105 to
115 degrees when combined with the high humidity in place. Along
the northern fringe of the heat, a wavy stationary front in the
Nation's midsection will be the focus for daily showers and
thunderstorms capable of widely scattered flash flooding and
severe weather from the High Plains to the Ohio Valley.

Over the West, a cooling trend is still on deck for much of the
region beginning today when many areas will see below normal highs
for the first time in several days thanks to expanding coverage of
afternoon showers/storms. Some storms could produce excessive
rainfall that could cause local flash flooding across the region,
especially in southern Arizona and New Mexico. High temperatures
in Montana near the Canadian border may stay in the 60s (coolest
since June). By Thursday, the cooler air will filter into more of
the region as the heat dome exits the West entirely. Areas from
the Rockies (and northern High Plains) to the West Coast will see
temperatures 5-15 degrees below normal which could be the coolest
since late May or early June.

Asherman/Fracasso

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




$$