FXUS01 KWBC 270800

PMDSPD



Short Range Forecast Discussion

NWS Weather Prediction Center College Park MD

359 AM EDT Mon Oct 27 2025



Valid 12Z Mon Oct 27 2025 - 12Z Wed Oct 29 2025



...Unsettled weather and cool temperatures will continue to spread

through the Southeast and southern Appalachians Monday with some

isolated flash flooding possible...



...A new storm system will organize across the Middle and Lower

Mississippi Valley by midweek with widespread showers and

thunderstorms expected...



...Another Pacific system will bring some lower elevation/coastal

rain and higher elevation snow to the Pacific Northwest Tuesday...



...Well above average, hot temperatures in the 90s continue for

south Texas; a warm up into the 80s and 90s has prompted Heat

Advisories for southern California Tuesday...



Ongoing showers and thunderstorms continue this morning with an

easterly moving upper-low and associated frontal system over the

Southeast. The upper-low is also helping to support the

development of a coastal low as it approaches the Atlantic, which

will bring a renewed influx of moisture to the Atlantic coast as

well as inland through the southern Appalachians. The ongoing

storms plus additional daytime development will bring locally

heavy rainfall, especially along the immediate

Florida/Georgia/Carolina coasts and inland into the terrain of the

Appalachians where some isolated flash flooding will be possible.

Low pressure will meander off the coast into Tuesday, drifting

northward a bit, with some continued shower and thunderstorm

chances and moderate rainfall lingering in the Carolinas and

spreading into the southern Mid-Atlantic.  



Another upper-trough passing along the northern tier of the

western to central U.S. and an accompanying cold front will bring

scattered showers and some thunderstorms to portions of the

northern Plains/Upper Midwest Monday, with some more isolated

storms possible into the Missouri Valley and central Plains.

Lingering snow showers also continue at higher elevations of the

northern Rockies under the influence of the upper-trough. Then, on

Tuesday, the trough will begin to dig deeply southward helping to

organize another low pressure/frontal system over the Middle to

Lower Mississippi Valley. Widespread showers and thunderstorms

with some locally heavy rainfall are expected, especially across

the Mid-South where some isolated flash flooding will be possible.

Storms are also expected to continue along a lingering frontal

boundary stretching northward through the Missouri Valley into the

Upper Midwest.



Precipiation chances will linger into Monday for portions of the

Pacific Northwest including snow showers for the Cascades

following the departure of this weekend's storm system to the

east. Another Pacific system will approach the region Tuesday

bringing a renewed round of lower elevation/coastal rain and

higher elevation snow. However, amounts will remain much more

moderate compared to this pass weekend's system, and should taper

off rather quickly into Wednesday. Elsewhere, some spotty showers

will be possible in New England Monday.



Temperatures along the southern tier of the country will generally

be above average the next couple of days, with highs mostly into

the 80s. A couple regions will see rather hot conditions for late

October, including across south Texas where highs into the 90s to

near 100 continue to be around daily record tying/breaking levels.

A warm up will also come to southern California Tuesday with a

Heat Advisory now in effect for highs in the 80s and 90s. Just to

the north, much cooler temperatures are expected with the noted

system passages. Well below average conditions will overspread

most of the Southeast Monday-Tuesday as the upper-low/cold front

pass through the region, with highs generally in the 50s and 60s.

A cold front will also bring well below average, cooler

temperatures in the 50s and 60s to much of the Plains on Tuesday

after highs reach into the 60s and 70s Monday. Conditions will

remain well below average Monday across the Pacific Northwest and

northern Great Basin/Rockies with highs mainly in the 40s and 50s,

with some moderation expected Tuesday. Temperatures will be around

typical Fall averages across the Northeast and into the Great

Lakes/Midwest, with highs mainly in the 50s. 



Putnam



Graphics available at

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



$$