A major pattern shift is on the way for Pennsylvania as fall’s mild streak gives way to colder air and the threat of early snow between November 9 and 15. Much of the state may see its first winter, with rain turning to snow and Arctic air rushing in from the northwest.
The NOAA Climate Prediction Center predicts that temperatures in Pennsylvania will be near to slightly below normal through the middle of the month, but precipitation will be near or above normal, particularly in the west and north. This combination increases the chances of lake-effect snow around Erie, as well as flurries or mixed precipitation farther south and east.
The National Weather Service offices in Pittsburgh, State College, and Binghamton warn that a cold front will provide widespread rain early next week, followed by considerably colder air. By midweek, highs will be in the 40s and lows in the upper 20s, cold enough to bring snow showers to the Alleghenies, Laurel Highlands, and I-80 corridor…