Baltimore-Washington International Marshall Airport, Baltimore’s official weather site, has picked up 2.29 inches of rain today. That pushes its monthly total to 13.26 inches making this Baltimore’s wettest July on record. It passes the previous record of 11.03 inches from 1889. Records for Baltimore date back to 1871.
Unless heavy rain redevelops in the D.C. area, this will be the last update in this post. Modeling does suggest heavy rain and storms may become more numerous late this afternoon and we’ll cover that in new posts later today.
For the forecast through the weekend, scroll down toward the bottom of this post.
10:00 a.m. – Flood warnings extended north through Baltimore
A train of heavy rain is pointed up the Chesapeake Bay into Washington’s eastern suburbs and north through Baltimore. Flood warnings now expand from St. Mary’s County in Southern Maryland through Bowie, Laurel, and Baltimore up to the Mason Dixon line. Ellicott City is included in the warning.
Baltimore-Washington International Marshall Airport reported 1.29 inches of rain in the past hour.
Even though the heaviest rain is east of Fairfax and southern Montgomery counties, a flood warning there was extended until 2 p.m. due to high water from earlier rain and the possibility of more downpours. The National Weather Service has received many reports of road closures just west of the Beltway where heavy rain tracked earlier this morning.
8:25 a.m. – Very heavy rain east of District – flood warning
A conveyor belt of heavy rain is surging north through Southern Maryland into area just east of the District. A flood warning is in effect until 2:15 p.m. for parts of Anne Arundel, Prince George’s, Calvert, and St. Mary’s County. About an inch of rain has fallen in this zone and at least another inch is possible.
Flood warnings may be extended north toward Howard County and Baltimore as this rain moves in that direction, including around Ellicott City and Columbia.
6:30 a.m. – Big area of heavy rain pointed at D.C. region, flood warning for western suburbs
The tornado warning that had been effect for east central Fairfax County has expired but very heavy rain continues tracking through our western suburbs and more is heading our way.
A flood warning stretches from south central Fairfax County through Fairfax City and into south central Montgomery County and lasts until 9:15 a.m. The thunderstorm moving through could produce rainfall rates of an inch an hour.
We have seen no indication an actual tornado occurred (it was radar-indicated) in Fairfax County, but there is enough spin in the atmosphere that we cannot rule out the possibility of more tornado warnings today. We’ll be monitoring that.
The main hazard will be likely flooding. A big area of heavy rain in southeast Virginia and eastern North Carolina is pointed at the region.
5:55 a.m. – TORNADO Warning for east central Fairfax County until 6:15 a.m.
A radar-indicated tornado (no confirmation) is pushing through east-central Fairfax County from around north Springfield through the Bailey’s Crossroads, Lake Barcroft and Seven Corners area and toward Falls Church. Take cover in the lowest level of your residence in an interior room away from windows. Do not commute in this until warning expires at 6:15 a.m.
From 5 a.m.
TODAY’S DAILY DIGIT
A somewhat subjective rating of the day’s weather, on a scale of zero to 10.
1/10: Super soggy saturation situation is no exaggeration.
Today: Showers and storms, heavy at times. Highs: 79-84.
Tonight: More showers and storms. Lows: 70-75.
Tomorrow: Showers and storms, heavy at times. Highs: 77-82.
View the current weather at The Washington Post headquarters.
FORECAST IN DETAIL
We are literally and figuratively stuck in the mud right now with thunderstorms continuing today and tomorrow. Sunshine will find ways to sneak in at times, but flash flooding remains a risk (stay safe). Rain backs off Thursday and Friday with temperatures edging slightly hotter. The weekend brings mixed sky conditions, warm/humid weather and scattered daily showers and storms.
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Today (Tuesday): More of the same. Partly to mostly cloudy skies, scattered showers and thunderstorms, some heavy at times with risks for flash flooding. Location and timing of heaviest rains continue to vary and it is difficult to pinpoint — watch radar for updates. Highs are in the upper 70s to middle 80s with moderate to high humidity, but breezes from the southeast at 10 to 15 mph with higher gusts of 20 to 25 mph at times offset the mugginess. Rainfall varies widely, from a quarter-inch to a full inch along with locally heavier potentials. Confidence: Medium-High
Tonight: Mostly cloudy with scattered showers and some thunderstorms possible. Some activity could produce locally heavy downpours with rain totals widely varied again from one-tenth to three-quarters of an inch and locally even heavier. Lows range from the lower to mid-70s with moderate to high humidity and light breezes from the southeast at 5 to 10 mph. Confidence: Medium-High
Tomorrow (Wednesday): Mostly cloudy with scattered showers and storms along with occasionally heavy downpours. Rain totals again range broadly, from a quarter-inch to an inch to even more locally. Flash flooding concerns continue. Highs in the middle to upper 70s or low 80s with moderate to high humidity and winds from the south at 5 to 10 mph. Confidence: Medium-High
Tomorrow night: Scattered showers and storms mostly early during evening hours, with partly to mostly cloudy skies overnight as lows drift down into the lower to mid-70s again. Rains range anywhere from a trace to a half-inch, locally heavier. Confidence: Medium-High
A LOOK AHEAD
Thursday and Friday are less wet overall with partly sunny to partly cloudy skies as highs edge into the middle to upper 80s along with moderate to high humidity. Look for some scattered showers or thunderstorms around the area each afternoon and evening along with chances at times Thursday and Friday night when lows reach the upper 60s in the outer suburbs to middle 70s in the city. Confidence: Medium
This weekend features the approach of another frontal system that should trigger even more showers and some thunderstorms each afternoon and evening, especially on Sunday when the front nears the area. We should manage a mix of partly sunny to mostly cloudy skies through the weekend with highs in the middle to upper 80s along with moderate to high humidity levels again. Lows range in the upper 60s to low to mid-70s again Saturday night, with partly cloudy skies and scattered showers/storms. The front is forecast to stall out to deliver even more rains early next week, keeping this month in the running for wettest July on record. Confidence: Low-Medium