The triple-digit heatwave that hung over the nation’s 250th聽anniversary may be over Monday. But high temps, souplike humidity and potentially severe storms are expected to outlast the pomp and circumstance after thunderclouds pelted the East Coast with rain and hail over the weekend.
鈥淪cattered showers and storms later today could produce downpours that could lead to flash flooding and also damaging wind gusts,鈥� 7News First Alert Meteorologist Eileen Whelan said.
The National Weather Service issued a flash flood warning for California and Lexington Park in St. Mary’s County, Maryland, until 4:30 p.m. Monday.
It has also issued a flood watch for the entire region beginning at 4 p.m. The advisory extends from Cecil County, Maryland, in the east to Morgan County, West Virginia, in the west and from Baltimore County in the north to Albermarle County, Virginia, in the south.
Storms are expected to bring high winds and heavy rain Monday afternoon and evening, and may drop up to 3 inches of rain per hour “with even higher instantaneous rates,” NWS said. Not every area in the storm’s path will see strorms, according to 7News First Alert meteorologist Steve Rudin, and forecasters expect the wet weather to leave the area sometime Tuesday, but rain — much of it quite heavy — will linger in spots.
There’s a chance of storms again on Tuesday and Wednesday.
Temperatures will range in the 80s and 90s Monday, and forecasters expect humidity to remain high — with dewpoint temperatures in the 70s. The District continues to encourage residents to stay hydrated, take breaks in air-conditioned spaces and check on vulnerable neighbors.
Forecast
FLOOD WATCH UNTIL MIDNIGHT
MONDAY EVENING:
Scattered Showers & Storms
Temperatures: 80s to 70s
Winds: Northeast 5-10 mph
Unsettled weather continues as showers and storms move across the DMV. Some storms could be on the strong side capable of producing damaging winds and very heavy rain that could continue to the flash flooding threat. A FLOOD WATCH has been posted and extends through the evening hours for all areas inside and around the beltway, and along the I-81 corridor.
MONDAY NIGHT:
Lingering Showers
Lows: 68-75
Winds: Northeast 5 mph
Thunderstorm chances will continue through 9 p.m. with rain chances decreasing by, or shortly after, midnight. It will remain cloudy and humid overnight with low temperatures falling into the upper 60s in the suburbs to middle 70s downtown. Areas of patchy fog may develop, so watch for reduced visibility. Pavement will remain damp, so be mindful of slick surfaces.
TUESDAY:
Mostly Cloudy
Chance Showers, Storms
Highs: 82-85
Winds: Northeast 5-10 mph
The active weather pattern rolls on with clouds, high humidity, and rain/storm chances. Afternoon high temperatures will be cooler-than-average with highs in the 80s. Showers and storms will likely develop at some point throughout the day, but there will also be a lot of dry time for your outdoor activities. Humidity levels will remain high, so the stickiness factor will be in play. With the high humidity, any storms that develop could contain heavy rainfall that could lead to isolated flash flooding.
WEDNESDAY:
Partly Sunny
Chance for Storms
Highs: 82-85
Winds: Northeast 5-10 mph
The rinse and repeat weather pattern rolls on with high humidity, more clouds than sun, and chances for showers and storms at any point throughout the day. There is a slightly lower chance for rain midweek, so that may bode better for your outdoor plans. With the continued high humidity and chance for slow-moving storms, isolated instances of flash flooding will be possible.
THURSDAY:
Chance Showers and Storms
Highs: upper 80s
Winds: South 5-10 mph
Temperatures begin to climb again with highs approaching 90 under a mix of sun and clouds. A typical summertime pattern develops with scattered afternoon and evening thunderstorms. Not everyone will see rain, but any storm will be capable of brief heavy downpours and lightning.
FRIDAY:
Scattered Showers, Storms Possible
Highs: near 90
Winds: Southwest 5-10 mph
Warm and more humid conditions continue with afternoon highs around 90. Expect a mix of sun and clouds followed by scattered late-day showers and thunderstorms. Storms should remain fairly typical for July, but locally heavy rain and gusty winds will once again be possible.
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