WASHINGTON — A Yellow Weather Alert is in effect Thursday for showers and storms. Heavy rain with possible flooding will be the main threat. Some storms will have gusty winds.
A Flash Flood Watch is in effect for the DMV region until midnight.
Severe weather Wednesday caused a water main break on Bradley Blvd near Huntington Parkway. Crews are still working to fix the 16-inch break Thursday morning. There were also reports of flooding in Ellicott City. A house was struck by lightning at the intersection of Sligo Creek Parkway and Three Oaks Drive Wednesday night.
LINKS: Severe Weather Alerts | Live radar | All hurricanes to hit or come close to the DMV | NOAA hurricane season outlook Derecho 2012
View Live Interactive Radar Below:
Quick Forecast:
Thursday: Humid with periods of showers and storms, some heavy morning downpours. High: 83.
Thursday Night: Showers and strong storms ending around midnight and muggy. Low: 74.
Friday: Mostly cloudy and humid, scattered thunderstorms, some heavy. High: 86.
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FORECAST DISCUSSION:
A cold front approaches Thursday morning and then stalls north of the DMV until late Thursday. This will spark thunderstorms, some with heavy downpours. We issued a Yellow Weather Alert for Thursday and will monitor Friday. Heaviest storms look to be south of D.C. Thursday morning. Most of the stronger storms with heavy rain will occur after 2 pm.
The humidity stays high through Friday. Highs will be in the 80s.
Detailed Forecast:
Thursday: Mostly cloudy and humid with mainly strong morning storms. Highs: 79-84. Winds: SE/NE - 10.
Thursday Night: Showers and strong storms ending around midnight and muggy. Lows: 70s. Winds: Light.
Friday: Mostly cloudy and humid, scattered thunderstorms, some heavy. Highs: 81-86. Winds: ENE 5-10.
Extended Forecast:
Storm chances remain high through Sunday. An upper-level trough will draw moisture into the DMV, meaning heavy downpours are possible with thunderstorms. Strong storms are possible each day. The clouds and showers will hold temps in the 80s through Sunday.
We'll also be tracking a tropical system in the long-range forecast. Tropical depression Eleven is forecast to become a tropical storm Wednesday night or Thursday. 
Saturday: Mostly cloudy, more showers and storms. Highs: 79-84.
Sunday: Mostly cloudy, scattered showers and storms. Highs: 80-85.
Monday: Partly cloudy, warm and less humid. Highs: 84-88.