High pressure aloft has continued to bring in very nice, but pleasant conditions across the area as high temperatures topped out in the low 80’s under mostly sunny skies. The ridge was once situated over the Ohio Valley region has now progressed further eastward into the New England Region. Return flow has helped gradual warming across the region as temperatures have jumped a degree or two higher since Monday.
700mb heights and winds map showing the ridge just to our east over parts of Pennsylvania with a projected north-east path. Red arrows indicate return flow which explains the gradual climb in temperatures for highs since Monday.
The ridge will continue its track off the east coast as a mainly dry front sets to move through the region Thursday night. Normally with a front we would see showers and storms develop just ahead of it. Significant dry air above the lower level and precipitable water values around normal or just above will lead to relatively low chances for any development for pop up showers and storms. We should continue to see partly cloudy conditions over the next couple of days as the weak frontal passage works through the region. Highs look to be a tad bit warmer for your Thursday with temperatures topping out in the mid 80’s across the Commonwealth. Thursday night should bring partly cloudy skies with a SLIGHT chance for an isolated shower over the area. Look for lows to be a bit cooler as temperatures are expected to bottom out around 60 degrees.
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Friday: Expect slightly cooler conditions with a high of 79 degrees. Partly cloudy skies should stick around into the evening and overnight hours. Low: 56, Light winds from the north around 5 mph.
Saturday: Expect mostly sunny conditions with a comfortable high around 76 degrees. Low: 56, Light winds from the north around 3 mph.