WASHINGTON — Parts of the D.C. area saw thunderstorms and localized flash flooding overnight, but rain continues through Monday morning, which could mean a messy commute.
Someone around here is going to have a Severe Thunderstorm Warning while it’s near 50F tonight. Some of those cells are going to move right over the shallow, cold wedge.
— Met. Matt Ritter (@MetMattRitter) April 15, 2018
A flash flood watch is in effect for parts of the Shenandoah Valley.
There will be showers and maybe some thunderstorms as the cold front moves through, Storm Team4 meteorologist Sheena Parveen said.
Most of the heavy rain will be out of the area by 6 a.m., with scattered showers left over even through the afternoon.
After a rise in temperature before 5 a.m., it will drop and remain in the mid 50s through the afternoon with gusty winds.
Storm Team4 meteorologist Somara Theodore said some areas could see localized flash flooding with as much as one to two inches of rain along with strong gusty winds. Some of the isolated thunderstorms could be severe, especially further to the south.
The front is also leading to a variety of temperatures in the area.
“We are literally situated in the middle of a battle between warm and cold air, and the cold air is winning, for now,” Theodore said.
“A backdoor cold front (one that sneaks in from the northeast as opposed to coming in from the west) dropped in and is duking it out with the warmer air to our south. This is why temperatures in D.C. are in the 50s but are in the 70s in Fredericksburg, Virginia,” Theodore said.
The National Weather Service posted a Hazardous Weather Outlook for the area, also warning that isolated incidents of flooding are possible, as well as a few damaging wind gusts.
NWS believes most of the damage will be seen in the western parts of Virginia and Maryland.
To keep up with the forecast, visit the WTOP weather page.
WTOP’s Abigail Constantino contributed to this report.
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