Severe thunderstorms are possible across the region Saturday afternoon and evening, possibly capable of producing damaging wind and hail.
The National Weather Service issued a severe thunderstorm watch through 9 p.m. for all of Central Maryland, including Baltimore, Washington, D.C., and the surrounding suburbs.
Heat and high humidity were expected to fuel storms as a cold front approaches the region. Temperatures reached 91 degrees at BWI Marshall Airport by 2 p.m., and with dew points around 70 degrees, the heat index is approaching triple digits.
On the other side of the cold front, passing through Ohio and western Pennsylvania on Saturday afternoon, temperatures were in just the upper 60s.
Severe storm watches extend from northern Virginia to Maine.
The storms will usher in cool, dry air, with low humidity and highs around 80 degrees expected in Baltimore on Sunday.