|Dew Point:||28.4°F (-2.0°C)|
|Sea Level Pressure:||28.67" (970.9 mb)|
Isolated Showers And Thunderstorms then Patchy FogLow: 65
Patchy Fog then Slight Chance Rain ShowersHigh: 80 Low: 65
Mostly Sunny then Slight Chance Rain ShowersHigh: 81 Low: 57
SunnyHigh: 71 Low: 55
Mostly SunnyHigh: 75 Low: 61
Isolated showers and thunderstorms before 8pm, then patchy fog. Partly cloudy, with a low around 65. Southwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Patchy fog before 8am, then a slight chance of rain showers. Mostly sunny, with a high near 80. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 65. Southwest wind around 8 mph. Chance of precipitation is 20%.
A slight chance of rain showers after 5pm. Mostly sunny, with a high near 81. Southwest wind 7 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of rain showers before midnight. Partly cloudy, with a low around 57. West wind 7 to 10 mph. Chance of precipitation is 20%.
Sunny, with a high near 71.
Mostly clear, with a low around 55.
Mostly sunny, with a high near 75.
Mostly clear, with a low around 61.
... High pressure will remain over the Mid Atlantic region the remainder of the weekend with mostly dry conditions and above normal temperatures expected. The high will drift further off the southeast coast by Monday as a cold front approaches from the Ohio Valley. In the wake of the frontal passage, high pressure will situate itself over the region once again through the middle of next week.
NEAR TERM /THROUGH TONIGHT/... High pressure sits atop the Mid Atlantic region this afternoon as a weak shortwave tracks into western PA and WV. This is evident in satellite imagery with a cumulus field west of the Blue Ridge and radar returns to our west showing isolated coverage of showers and thunderstorms. As this shortwave continues moving across PA this afternoon, and temperatures around the CWA rise into the low to middle 80s, some instability will build west of the Blue Ridge. This will be enough to trigger widely scattered shower activity with support of terrain circulations, while an isolated thunderstorm can't be ruled out.
Activity wanes quickly this evening as the sun sets and stability returns. Dry conditions overnight as mostly clear to partly cloudy skies prevail. Temperatures will trend a touch warmer than previous nights, likely holding in the 60s areawide. Patchy fog will be possible given increasing low level moisture and calm winds, especially for areas that see rainfall and remain cloud free.
SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/... High pressure will center itself along the Outer Banks and into the western Atlantic on Sunday, providing warm air advection over the region under persistent southerly flow. As a result, summer like conditions return as temperatures climb into the mid to upper 80s, with dewpoints elevated into the mid to upper 60s. Some hi res guidance is trying to initiate isolated shower activity over the mountains once again Sunday afternoon. Have introduced slight chance POPs into the forecast to account for this, but with the mid to upper ridging cresting over the region and we'll be lacking a trigger, terrain circulations will have to be the main initiator. So do think a majority of the region remains dry.
Another chance of rain exists Monday as a cold front approaches to our west Monday afternoon and evening. However guidance is in fairly good agreement with shower/storm coverage decaying as the front limps across the mountains. This makes sense as the primary upper trough and shortwave energy lifts well to our north. Will continue to advertise low end chance POPs in the forecast as a result. Temperatures will run well above normal for the latter half of September, topping out in the middle 80s to near 90 degrees. Dry conditions Monday night in the wake of the front as high pressure quickly builds in from the west. Lows Monday night back off into the upper 50s to middle 60s.
LONG TERM /TUESDAY THROUGH SATURDAY/... A cold front should be pushing offshore Tuesday morning as high pressure builds over the Tennessee Valley. The high is forecast to move overhead Wednesday, then offshore Thursday with dry weather. Another cold front may approach by week's end, but in this pattern will likely be moisture-starved. Therefore, any rainfall chances in the long term period should be relatively minimal.