A COLD FRONT WILL BRING COOLER TEMPERATURES ON FRIDAY INTO THE WEEKEND… WILL WE GET MUCH NEEDED RAIN FROM THIS COLD FRONT?

A cold front is marching towards Hampton Roads and the air mass behind it will make it more comfortable on Friday and this should last into the weekend before higher humidity builds back into the region. The big question is whether we see much needed rain from thunderstorms that develop out ahead of the front. The computer models are sending conflicting signals as far as rain chances here in Southeast Virginia. The NWS gives us a 60% chance of rain today and tonight (July 29th). Some parts of SE VA have received very little rainfall over the past month or so, so any rainfall would be welcome. High pressure will build into the region on Friday and then it will move off the coast over the weekend. The southerly flow on the backside of the high will bring back the humidity and warmer temperatures later in the weekend. This may cause some showers or storms to develop on Sunday and Monday… I’ve seen reports that upwelling has been occurring at the beaches due to the persistent offshore windflow and this can cause a profound drop in the ocean temperature. Last weekend, the air temperature was hitting record highs (105 degrees at ORF) and yet the ocean temperature was very chilly due to the upwelling condition. Upwelling is a result of the offshore wind blowing the warm surface water out to sea and the colder water below the surface of the ocean moving towards the shoreline. I may have an update on Friday.

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