Wednesday, September 11, 2013

Harrisburg: Storms, Then Dramatically Cooler by Friday

By , Expert Senior Meteorologist
September 11,2013; 8:38PM,EDT
 
 
After a brief spell of late-summer heat, a couple of rounds of thunderstorms will roll through Harrisburg and much of southern and central Pennsylvania, followed by some of the coolest weather of the season so far.
One or more rounds of thunderstorms are forecast into Thursday night.
Any storm through Thursday can be locally strong with blinding downpours and gusty winds. A few areas could be hit with travel delays and sporadic power disruptions.

RELATED:
Forecast Temperature Maps
Pennsylvania Interactive Radar
Locally Severe Storms: I-90 Wednesday, I-95 Thursday

The storms will not break the hot and humid conditions until Thursday night.
With the humid air and spotty rain around Wednesday night, some areas may start foggy Thursday morning.
By Friday, Canadian air will settle in over the region with much lower temperatures and humidity, as well as a gusty breeze. Some people will feel refreshed, while others may mind the sudden chill. That breeze should prevent fog Friday morning.
The pattern Friday into the weekend could yield some of the lowest temperatures of the season so far for the metro area and the region in general. High temperatures may fail to reach 70 degrees in some locations.
Meanwhile, Gabrielle is forecast to remain well offshore of New Jersey, Delaware and Maryland waters this week, but it affected Bermuda Wednesday with showers, gusty winds and rough seas.
Windswept rain from Gabrielle are forecast to spread from Nova Scotia to Newfoundland, Canada Friday into Saturday.

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