Synopsis..
A shortwave moving into the state from the Great Lakes region will bring a chance of showers for this evening across the entire commonwealth, although southeast regions may dodge most of the shower activity. Snow will mix in after sunset across the northern portions of the state and across the Laurel Highlands. Some lake effect activity may stir up at times over the weekend over far northwestern sections of the state (Erie/Meadville areas). Beyond the northwest region, most of the rest of the state will see mostly clear skies and fairly seasonable temperatures for the weekend. A cold front approaches toward the beginning of next week bringing a chance of showers back into the forecast for Monday.
Short Term...
As stated in the synopsis, a 500mb shortwave is approaching the region from the Great Lakes and brings a threat of showers across most of the state as indicated by the GFS and NAM. Southeast sections of the state will be in the "iffy" zone for any sort of precipitation. Decreasing 1000-500mb thicknesses throughout the day indicate that northern/higher elevation regions could see some snow mixing in at times with the rain showers. After the short wave moves away later this evening and tomorrow, a slight chance of some lake effect may bring some rain/snow showers to Erie and Crawford counties early on in the weekend.
Long Term..
The weekend looks mostly clear for the rest of the state, with seasonable temps as a ridge of high pressure builds in to our south. However, an approaching cold front will bring a chance of showers to the region sometime Monday or early Tuesday. Details on timing will have to be determined by later shifts. Have a good Thanksgiving break all!
Forecaster: Kyle Imhoff
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