Category Archives: Weather Updates

Philly Winter Weather Update

Over the past day, the NAM model has done well with the temperatures and the precipitation predictions.  The freezing drizzle and very light rain should continue on and off this afternoon.  Just a few snow flakes this evening.   The NAM only cranks out 0.01 inches of water every 6 hours, ending late evening.

During the daylight hours, solar insolation through clouds may keep some dark roadway surfaces just wet, but towards evening, more icey conditions are possible.

Winter Weather Update

The afternoon NAM model continues to show colder surface temperatures around PHL.  Chances of freezing rain or drizzle appear more likely for later tonight and Monday closer to PHL.

I don’t think the models are capturing this low pressure system well.

A small  cyclonic surface wind circulation is developing off the NJ coast.  Could an unexpected secondary low be developing?   Stay tuned.