|Dew Point:||21.4°F (-5.9°C)|
|Wind:||From the East at 4.0 MPH Gusting to 5.0 MPH|
|Wind Chill:||44°F (7°C)|
|Sea Level Pressure:||30.01" (1016.1 mb)|
Mostly CloudyLow: 34
Chance Rain ShowersHigh: 48 Low: 32
Snow Showers LikelyHigh: 35 Low: 21
Slight Chance Snow Showers then Mostly SunnyHigh: 34 Low: 30
SunnyHigh: 52 Low: 39
Mostly cloudy, with a low around 34. South wind around 7 mph.
A chance of rain showers after 7am. Cloudy, with a high near 48. West wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Rain showers likely before midnight, then sleet likely and rain and snow likely between midnight and 1am, then snow showers likely. Mostly cloudy, with a low around 32. West wind 8 to 17 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Snow showers likely. Mostly cloudy, with a high near 35. West wind 16 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Snow showers likely. Mostly cloudy, with a low around 21. Northwest wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
A slight chance of snow showers before 8am. Mostly sunny, with a high near 34. Chance of precipitation is 20%. Little or no snow accumulation expected.
Clear, with a low around 30.
Sunny, with a high near 52.
A slight chance of rain after 3am. Mostly cloudy, with a low around 39.
... Dry weather will come to an end as the next system brings light rain Thursday. Rain and snow showers will be possible Friday before a drier weekend.
NEAR TERM /THROUGH THURSDAY/... Little change was needed to the overnight forecast, though did adjust PoPs upwards across far northern portions of the CWA given current radar trends. The aforementioned slower onset of rain across central portions of the region continues to look valid as we remain in an area of dry air and subsidence between the developing east coast low and western shortwave. Latest hires models hint that central portions of the area, including Pitt Metro, could see little more than a brief light shower. Will ponder further lowering of PoPs across this area as needed later this morning. Otherwise, forecast remains on track.
Prev. discussion follows...
A southern stream shortwave will approach the area out of the midwest as another drops south out of the Great Lakes...and a third transitions up the east coast. Guidance shows these features all eventually phasing.
Precipitation will be relatively light with a quarter inch of rainfall expected through Thursday evening. Many locations will likely see less than half of that.
SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/... Another series of shortwaves within deep east coast troughing will rotate through late Thursday night into Friday. Cold air advection following the first trough will allow the thermal profile to support snow as the primary ptype for much of the area as these shortwaves rotate across. However, column moisture will be on the light side so heavy snow is unlikely. Rather, stratiform light snow is probable in the early portions of Friday. This precip may be mixed with rainfall in areas south of Pittsburgh and lower in elevation.
And then, per usual for the Allegheny Plateau and Mtns, northwest flow in wake of any system means a chance of precip within a broken stratocu deck. Temperatures on Friday may be too marginal for snow, especially if the sun manages to shine through the broken strato deck, at least in the southern zones. Snow showers will gradually decrease in coverage late Friday, eventually ending in the mountain regions by dawn Saturday. Only very light snow totals are expected for the majority of the CWA. The highest elevations along the Allegheny Front may see upwards of a couple inches through the period.
LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... Temperatures will moderate a bit over the weekend as the deep eastern CONUS troughing progrades into the Atlantic. NW flow aloft will flatten with approach of a shortwave ridge. Conditions will remain mostly dry though a few quick passing shortwaves on the NW periphery of our area may enhance cloud cover and a few brief showers in what will largely be a dry weekend.
The next chance for precipitation will come Monday as southern stream energy interacts with a northern stream shortwave. However, global model solutions differ on timing and placement so will hold off on details and go with a general blend in the forecast package.