Synopsis:
Windy conditions linger behind the low pressure system that passed through overnight last night. In its wake a polar continental air mass will be firmly in place across Pennsylvania. Chances for precipitation are close to zero until a clipper system moves through over the weekend. Even this system looks to be a weak one and the chance of precipitation remains small.
Short-term:
Wind and wind chill advisories are currently in place across much of the state until the overnight hours. The WRF shows fairly large areas of 10-15kt winds persisting throughout much of the week, however, and they might be worth mentioning when combined with the cold temperatures {especially in the nighttime hours}. This could create dangerously low wind chill factors. Both the WRF and GFS show the 510-thickness line moving north and south across the state through the short-term. Low relative humidity values at both the 700- and 850-mb levels show clear skies across the state.
Long-term:
A warm-up looks to be in store for the weekend with the beginnings of a break down of the longwave trough that has been in place over the Eastern US for nearly a month. While a clipper system is looking to pass through this weekend, it will not have much moisture with it and as a result we are expecting very little precipitation from it. Sunday may be interesting, as very early model runs and NOAA forecasters are predicting the possibility of some rain/snow mixtures. Future shifts will have to keep an eye on this developing pattern.
Windy conditions linger behind the low pressure system that passed through overnight last night. In its wake a polar continental air mass will be firmly in place across Pennsylvania. Chances for precipitation are close to zero until a clipper system moves through over the weekend. Even this system looks to be a weak one and the chance of precipitation remains small.
Short-term:
Wind and wind chill advisories are currently in place across much of the state until the overnight hours. The WRF shows fairly large areas of 10-15kt winds persisting throughout much of the week, however, and they might be worth mentioning when combined with the cold temperatures {especially in the nighttime hours}. This could create dangerously low wind chill factors. Both the WRF and GFS show the 510-thickness line moving north and south across the state through the short-term. Low relative humidity values at both the 700- and 850-mb levels show clear skies across the state.
Long-term:
A warm-up looks to be in store for the weekend with the beginnings of a break down of the longwave trough that has been in place over the Eastern US for nearly a month. While a clipper system is looking to pass through this weekend, it will not have much moisture with it and as a result we are expecting very little precipitation from it. Sunday may be interesting, as very early model runs and NOAA forecasters are predicting the possibility of some rain/snow mixtures. Future shifts will have to keep an eye on this developing pattern.
-Burkely Twiest
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