Monday, September 23, 2013

Forecast Discussion 9/23 Afternoon Shift

A cold front has left temperatures in Pennsylvania cool and autumn-like, and high pressure is set to take over and create very pleasant and sunny conditions for the week ahead.

Short term (Mon-Wed)
Cloudy skies Monday morning have dissipated thanks to a high-pressure ridge moving into Pennsylvania. This high-pressure ridge will bring very little moisture content with it, setting up for low humidity with little to no cloud cover. The absence of clouds will allow for temperatures to steadily climb through the 70s heading later into the week. Low temperatures overnight will be in the low 40s and possibly the 30s for the northern portions of the state, so frost is a possibility.

Long term (Wed-Fri)
Sunny skies will persist through Wednesday. A trough extending down from Canada will begin to make its way east, but will most likely weaken and dissipate when matched against the ridge currently over Pennsylvania, and any low-pressure air will be diverted south, leaving the same weather pattern in place through the weekend. Temperatures will be a bit warmer for September, reaching the mid-70s in most areas of the state, with overnight lows in the 40s.

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