A Facebook video timestamped 9:35 a.m. shows the swirling cloud near Harsens Island as a cold front rolled through.

St. Louis gets a sunny Sunday with a high near 82 before warmer temperatures return midweek. Rain stays mostly away until small storm chances emerge Wednesday night and Saturday.

Philadelphia faces a chance of early showers and thunderstorms Sunday before a sunny, drier stretch takes over through Wednesday.

Sunny skies and a high near 84 set up a pleasant Sunday in D.C. Dry weather lasts through Tuesday before humidity and storm chances return.

Fog, clouds and shower chances will shape Sunday in Boston before sunshine and lower humidity arrive Monday. The forecast stays mostly bright through midweek, with rain chances returning late Thursday.

Cleveland gets a cool, windy Sunday with early showers, a brief afternoon sun break and a stormier night ahead. Lake Erie swimmers face a high rip-current risk through Monday evening.

Raleigh gets a sunny, drier Sunday with a high near 88 before storm chances return Thursday.

Columbus starts Sunday cool and clear, with a slim chance of late-day storms. A sunny warmup takes over through midweek.

Morning thunderstorms could bring heavy rain, gusty winds and small hail to New York City Sunday. The rest of the week looks cooler and mostly sunny before storms return Thursday and Friday.

Cincinnati wakes to fog Sunday, but sunshine arrives quickly with a high near 78. A warmer pattern builds toward the mid-80s later this week.

Fog fades into sunshine Sunday as Pittsburgh warms back up midweek. Storm chances return Thursday afternoon.

Patchy fog fades Sunday as Indianapolis warms to a sunny 78°F. A warmer, stormier pattern returns Wednesday and Thursday.

Tampa's Sunday forecast brings heat, humidity and scattered storms before a hotter, wetter stretch takes over later in the week.