March 30, 2025 Sunday Weather Update

Enhanced risk of severe weather including tornado threat

Good Sunday!

A lot of cloud cover across the Lower 48 within a humid, warm airmass east of the Rockies. The southerly flow will fuel the development of severe thunderstorms ahead of storm system tracking through the Midwest into the Great Lakes into Monday.

High Temperatures on Sunday

70s will extend into southern Michigan and western PA and NY. However, the cold easterly flow with a backdoor cold front has chilled NYC into the 40s and 50s today. Even chillier in Boston, and parts of Maine stuck below freezing.

Over the next 10-days, 80°F on Monday and Thurs/Fri in Washington D.C. but then back to the 50s by next week.

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Next 9-days High Temperatures

A mini-heat wave will build from Wednesday into Saturday across the Southeast with some places flirting with 90°F including Atlanta (earliest is April 23, 1980). Then, a strong trough/cold front blasts through the eastern U.S. from Canada cooling down dramatically — or back to reality of early Spring.

HRRR simulated radar next 18-hours

Thunderstorms will develop ahead of a cold front later this afternoon and form a squall that races eastward into early Monday morning.

Looking at convective initiation in central/eastern Missouri into Illinois then the southern part of the lines fires in far NE Texas and northern Louisiana.

Today’s Convective Outlook & Hazard Threats into Sunday morning

Hazard Threats into early Monday morning

SPC discussion has the main threats we’d expect with supercells including large hail, damaging winds, and several tornadoes — a few of which could be strong.

The area under threat is vast — centered on the Mississippi River valley into the southern Great Lakes.

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Temperature Analysis | 11:00 AM ET