UPDATE: Severe Thunderstorm Warning Issued for Prince George's County Until 6:30 p.m.

Update, 5:47 p.m.: The National Westher Service has upgraded the watch to a severe thunderstorm warning for Prince George's County through 6:30 p.m.

Original post, 2:24 p.m.: The National Weather Service (NWS) has issued a severe thunderstorm watch for Prince George's County through 8 p.m.

Severe thunderstorms are possible this afternoon and evening. Lightning is the number one severe weather killer in the U.S., the NWS noted. If you are outdoors and storm approaches, seek safe shelter indoors.

A severe thunderstorm watch, according to the NWS, means conditions are favorable for severe storms in and close to the watch area. Severe thunderstorms can and occasionally do produce tornadoes with little or no advanced warning. Residents should monitor weather conditions and listen for later statements and possible warnings.