Bolaris: Possible Frost By Week’s End

Thunderstorms swept into the area Monday night, bringing with them gusty winds, small hail and always dangerous cloud-to-ground lightening. All showers and leftover storms will slip off the coast Tuesday, allowing for a return to sunshine and pleasantly mild temperatures.

The return of the Big Chill

On Wednesday, a modified polar front will lead to afternoon showers and scattered storms. Temperatures will still be in the 60s, however unseasonably cold air will greet you Thursday as temperatures by day hover in the middle 50s.

Some parts of the Philadelphia region could be hit with frost either Friday or Saturday morning as the thermometer falls back into the winter-like 30s. How widespread will the frost be? It will depend on the amount of cloud cover and a light or near calm wind. Clear and calm conditions are the best case scenario for widespread frost.

Read more at http://www.philly.com/philly/news/Bolaris_Severe_threat_then_possible_frost.html#ukgWoqRM6Cd28mRL.99

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Cold Stretch To Continue Overnight, Record Low Temp Possible In Philly

Philadelphians could wake up to a new record-low temperature on Tuesday.

The cold-for-May snap hitting the region today — temperatures are about 15 degrees below normal — should continue overnight, with a low temperature of around 41 degrees expected, the National Weather Service says.

If the mercury drops any lower than that, Philadelphia would have a new record: The coldest temperature ever recorded on May 14 is 40 degrees, according to the weather service.

The weather service is calling that mark a “possible vulnerable record low.”

Read more at http://www.philly.com/philly/news/Cold_stretch_to_continue_overnight_record_low_temp_possible_in_Philly.html#3eUFqHvhv5DTxxW8.99