Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
246 PM EDT Mon Sep 14 2026

Valid 00Z Tue Sep 15 2026 - 00Z Thu Sep 17 2026

...A strengthening frontal system will bring widespread showers and
thunderstorms from the Intermountain West and Rockies to the Plains and
Upper Midwest over the next few days...

...Dangerous late-summer heat continues across the south-central U.S.
through midweek...

As a sprawling area of high pressure brings a cooler and drier air mass to
much of the eastern U.S. the next couple of days, the weather pattern
turns more active across the western and central U.S. through midweek.
Strengthening southerly flow ahead of a deepening low pressure system
tracking into the northern Plains will draw rich Gulf moisture northward
into the Heartland, setting the stage for several rounds of showers and
thunderstorms across the north-central U.S. Scattered to numerous
instances of flash flooding along with possible severe weather will be
concerns within this very moist and unstable environment. While the cold
front is forecast to slowly sink southward, persistent southerly inflow
into the boundary will keep unsettled weather lingering across the Plains,
enhancing the flash flood threat through midweek. Additionally, increasing
monsoonal moisture will lead to more widespread coverage of afternoon
showers and thunderstorms across the southern Rockies and Four Corners
this week, supporting daily chances of scattered flash flooding.

Meanwhile, an upper-level ridge moving across the Mid/Lower Mississippi
Valley will maintain dangerously hot weather with highs well into the 90s
and low 100s this week, which could set several daily high temperature
records. Combined with little relief at night, several days of Major to
Extreme HeatRisk are likely, which would increase the likelihood of
heat-related illnesses.


Miller/Asherman


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

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