The cold has finally arrived and winter-like weather is here to stay. January will be a much different month weather-wise than December and honestly a complete flip. Temperatures near average now (highs in 20s and 30s, lows in teens and 20s), until January 9th will lead to well below normal temperatures by Mid-January. Models have been consistently indicating this truly icy cold for mid-month for nearly three weeks.
Along with this cold, the potential for winter storms has developed, especially between January 9th-12th and that’s just the beginning. All three major models being the GFS (American), ECMWF (Euro) and GEM (Canadian), have all indicated the potential for a winter storm or even two in Pennsylvania between January 9th-12th. Will conditions be favorable? Yes, extremely favorable. A negative AO and MJO phase 8 will be in place both supplying the necessary cold air, as well as a neutral to negative NAO which supports the possibility of a coastal low pressure.
If cold air is as overwhelming as it is on the image above, the southern half of Pennsylvania would have the best shot at snow produced by a low pressure to the south. However, several cold shots will fly in beginning Sunday, bringing the lake effect snow potential sky-high.
That’s all for now, we will continue to monitor the threat(s) of a winter storm between the 9th and 12th.
We will be posting much more on our app regarding the expected weather such as exclusive videos and weather models. The app also offers a current conditions, interactive radar, local forecasts and much more so be sure to download it!
Josh has been passionate about weather as long as his memory dates! From watching the Weather Channel at age 7, to making hand-drawn hurricane maps at age 11, starting his first weather site at 13, and founding PWA at 15 and forecasting for the state for the past 9 years, Josh's interest in weather has never dwindled! As difficult as it is, he greatly enjoys forecasting for Pennsylvania due to its countless microclimates. The state is an East Coast severe weather hotspot and nearly always home to the rain/snow line during winter storms!
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