Showers and storms overnight could produce damaging winds and hail and will linger into the Tuesday morning commute. Heavy rain is expected to occur over a short period of time.
A Flash Flood Watch will be put into place Tuesday around 3 p.m. for counties north of D.C. and along the Maryland and Pennsylvania line.
A Flood Warning has been issued for Sweetwater Creek near Austell, affecting Cobb and Douglas counties until 9 p.m. Wednesday.
The river crested late Friday at 13.82 feet, its highest level since 1908, and the second-highest level ever recorded.
Rivers and lakes reaching flood stage in inland Northwest
Flood stage is 19.5 feet.
The Huron River in Hamburg Township is under a Flood Warning, with the river expected to crest more than a foot above flood stage later tonight.
A flood watch also was issued for the Fox River, which the Weather Service reports could affect Racine County.
Ponding of water is possible in low lying areas like ditches, culverts and fields. There are indications that storms may repeatedly move over the same areas, especially during the evening hours, they said.