|Dew Point:||36.0°F (2.2°C)|
|Wind:||From the SE at 3.3 MPH Gusting to 5.0 MPH|
|Wind Chill:||34°F (1°C)|
|Sea Level Pressure:||26.20" (887.1 mb)|
Light Rain LikelyHigh: 61 Low: 59
Light Rain LikelyHigh: 68 Low: 63
Showers And Thunderstorms LikelyHigh: 72 Low: 57
Chance Showers And ThunderstormsHigh: 62 Low: 57
Slight Chance Showers And ThunderstormsHigh: 67 Low: 56
Rain likely. Cloudy, with a high near 61. East wind 9 to 13 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Rain likely. Cloudy, with a low around 59. Southeast wind 12 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Rain likely. Cloudy, with a high near 68. South wind around 13 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain. Mostly cloudy, with a low around 63. South wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
A slight chance of rain before 8am, then showers and thunderstorms likely. Mostly cloudy, with a high near 72. Southwest wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
A chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 62. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
A chance of rain showers before 8am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 67. Chance of precipitation is 40%.
...High pressure will build to the north over New England today and move offshore tonight. A warm front will lift through the area Wednesday morning followed by a strong cold front late Wednesday. High pressure will build over the region again at the end of the week.
NEAR TERM /THROUGH TONIGHT/...
Surface wedge is expected to strengthen today as strong high pressure builds across southern Quebec and northern New England today. Meanwhile, isentropic lift is expected to increase later today into tonight along with RRQ jet dynamics. This is expected to result in another period of steady light to moderate rain today into Tue morning. Heaviest amounts are expected across wrn MD and ern WV. However, the latest guidance has trended lower with QPF amnts than 24 hrs and the overall amounts should be lower than yesterday. Given stratiform nature of precip and downward trend in QPF from models will hold off of any flood watches attm. MARFC has some fcst points on the Potomac and northern Shenandoah getting close to minor flooding Tue night. These were run with higher QPF from 24 hrs ago.
SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
Steady rain will probably linger into Tue morning across northern MD into srn PA. Otherwise, expect steady rain to end by afternoon as h850 warm front lifts north of the area with drizzle or mist possible due to drying aloft and upslope flow.
Then, attention turns to next cold front fcst to cross the area late Wed. Area should get into the warm sector Wed with modest destabilization expected. SPC has area under slight risk of severe wx Wed. Brief heavy rainfall is also possible as front crosses the area.
LONG TERM /THURSDAY THROUGH SUNDAY/...
After a pretty wet majority of the week, improving weather is forecast by the end of the week and over the weekend.
The frontal boundary that moves across the area Wednesday will likely stall out offshore and southwestward into southern VA and North Carolina for Thursday and Thursday night, as a weak surface wave moves along it. At the same time, a ~1025mb surface high will build into southeastern Canada and wedge down the northeastern US coastline, helping to induce northeast surface flow. Aloft, southwest flow will persist, and a return of warm/moist air advection will likely occur. The region is also progged to be in the right entrance region of an upper jet. This all spells out a day that will likely end up on the cool/cloudy side with increasing chances for showers by Thursday afternoon and Thursday night, especially south. The extent/location of which will be determined by the eventual location of the boundary and how much dry air can push southward. Highs in the 60s to around 70F.
The frontal boundary will begin to clear eastward by Friday as a secondary front passes by to the north. High pressure will begin to build into the region by late in the day. This should lead to drier weather although a few lingering showers will still be possible. Highs should rebound back to near or above normal, in the 70s to near 80F.
A baroclinic zone is then expected to set up from the Midwest eastward into New England which will serve as the focus for frontal systems into the following week, with the Mid-Atlantic on the warm side. High pressure will generally build overhead on Saturday and Sunday, with a system passing north Saturday night into Sunday along that zone. Temperatures should generally run above climatology, with highs in the 70s to near 80F and lows in the 50s to near 60F.