Severe weather conditions could affect Wednesday afternoon and evening rush hour in the region, with two rounds of storms bringing the risk of flash flooding and damaging winds.
A severe thunderstorm watch is in effect for Washington, DC, Northern Virginia and western Maryland through 9 p.m. tonight.
Around 1:45 p.m., heavy rain and storms are already moving east to areas around Dulles Airport and Fairfax County, Virginia.
Severe weather will likely impact Wednesday afternoon rush hour through the DC area, with two separate rounds of storms bringing the risk of flash flooding and damaging winds.
The National Weather Service has issued a flash flood warning for large parts of DC, Maryland, Virginia and West Virginia that will be in effect from 3 p.m. until tonight.
Storm Team4 meteorologist Chuck Bell expects the day to go like this: After a hot and humid morning, an offshore low pressure system and a slow-moving cold front will trigger thunderstorms east of the Blues. Ridge Mountains, starting around 3 p.m. Wednesday.
These storms are likely to affect the immediate DC and Baltimore areas later in the afternoon, with the potential for damaging wind gusts and small hail.
Evening commuters in the Shenandoah Valley could find themselves facing a second wave of thunderstorms Wednesday evening overnight. The main threat from these will be heavy rain and a risk of flooding, especially if the ground is saturated after previous weather conditions.
In a flood watch released for DC and parts of Maryland and northern Virginia from 3 p.m. to 10 p.m. Wednesday, the National Weather Service said downpours could be heavy enough to cause water to rise quickly on roads. and streams prone to flooding.
“Wide showers and thunderstorms are expected later this afternoon into the evening,” the weather service said. “Given a very warm and humid air mass, these will produce very heavy precipitation at times. Rainfall amounts of 1 to 3 inches are possible within a few hours, with locally higher amounts possible.
Rain is clearing the area late Wednesday evening, and overnight lows are getting cooler as the front moves. Another round of showers will act to limit sunshine on Thursday and keep temperatures in the lower 70s.
“The front will move slowly through the region tomorrow, keeping our skies cloudy and temperatures low,” Bell said. “Thursday’s most chance of rain is in the morning, and the rain could reach several inches in a few places, so flash flooding will remain a concern.”
WEDNESDAY: Thunderstorms likely. Thunderstorms can be violent. Rain at times heavy with possible flash flooding and hail in some areas. Heavy. Highs in the upper 80s to lower 90s.
WEDNESDAY EVENING: Showers and thunderstorms. Storms can be violent, the rain can sometimes be heavy. Lows between the low and mid 60s.
THURSDAY: Showers ending near noon. A bit of sun in the afternoon. Highs in the lows in the mid 70s.
FRIDAY: Sunny. Highs in the low to mid 80s.
SATURDAY: Fairly sunny and more humid. From mid 80s highs to 90s lows.
SUNDAY: Hot and heavy. Risk of thunderstorm after sunset. Highs around 90.
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