Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
353 AM EDT Tue Oct 28 2025

Valid 12Z Tue Oct 28 2025 - 12Z Thu Oct 30 2025

...Showers and thunderstorms along with some gusty coastal winds for the
Carolinas and southern Mid-Atlantic Tuesday...

...Storm system to bring widespread showers and thunderstorms from the
Mississippi Valley to the Appalachians/Mid-Atlantic Tuesday-Wednesday...

...Much cooler, below average temperatures will continue to overspread
much of the central and eastern U.S. into mid-week...

...Pacific system will bring lower elevation rain and higher elevation
snow to the Pacific Northwest Tuesday...

Showers and a few thunderstorms will continue into Tuesday for portions of
the Carolinas and the southern Mid-Atlantic as a coastal low passes by the
region. Some locally heavy rainfall will be possible particularly right
along the Outer Banks. Gusty winds and some minor to moderate coastal
flooding are also expected. Meanwhile, to the west, an upper-level trough
and accompanying surface cold front will initially bring shower and
thunderstorms chances to the Upper Midwest southward through the Missouri
Valley and into portions of the adjacent Plains Tuesday. Then, into the
overnight hours, reinforcing upper-energy will dig the trough deeply
southward and help to organize/reinforce a low pressure/frontal system in
the Middle/Lower Mississippi Valley. Shower and thunderstorm coverage will
expand overnight in vicinity of the low and the trailing cold front, with
some locally heavy rainfall possible particularly across the Mid-South.
The system will continue eastward Wednesday with widespread showers and
thunderstorms spreading into the Ohio and Tennessee Valleys and
central/southern Appalachians through the day, and into the
Mid-Atlantic/Carolinas by Wednesday night. Locally heavy rainfall will
remain possible, with an isolated risk of flash flooding, particularly in
the more terrain sensitive areas of the Upper Ohio/Tennessee Valleys and
the Appalachians. A prior frontal passage followed by this second
upper-low/frontal passage will keep temperatures cool and well below
average for much of the eastern/central U.S. Widespread highs in the 50s
and 60s are expected for all but the Gulf Coast/Florida Tuesday. Cooler
temperatures in the 60s to 70s will then reach the Gulf Coast by
Wednesday, a change particularly notable across south Texas where highs
into the 90s to near 100 over the past few days have been around daily
record tying/breaking levels.

Another Pacific storm system will bring lower elevation coastal/valley
rain and higher elevation snow to the Pacific Northwest Tuesday. Some
moderate rain and higher elevation snow amounts will be possible, but
should remain lighter than this past weekend's Atmospheric River activity.
The system will also depart the region rather quickly with precipiation
chances tapering off by early Wednesday. Forecast high temperatures will
remain below average for much of the Great Basin/Rockies Tuesday as an
upper-level trough passes overhead, with highs mainly in the 40s and 50s.
An upper-ridge will expand over the western U.S. as the upper-trough
departs to the east, with above average temperatures for most locations by
Wednesday. Highs in the 50s and 60s will be common for the Pacific
Northwest and Interior West, with highs into the 70s and 80s for much of
California. Even hotter temperatures into the 90s are expected for the
Desert Southwest and parts of southern California, where Heat Advisories
have been issued. 

Putnam

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