Archive for August 31, 2014

RAIN CHANCES HAVE BEEN LOWERED FOR LABOR DAY… ABOVE NORMAL TEMPERATURES AND VERY HUMID CONDITIONS WILL KEEP THE AIR CONDITIONERS HUMMING THE NEXT FEW DAYS

I’m posting to let you know that weather forecasters have lowered our rain chances for Monday (Labor Day). Although rain chances for Monday were never really that high to begin with, the thinking was that we would see a few isolated to scattered showers and thunderstorms. As I stated in my post on Saturday, there is no well-defined mechanism to produce rain but the computer models were indicating a 30 to 40 percent chance of rain. I stated that I thought the coverage would be minimal. Now, the probability of precipitation has been lowered to 20%… As I’ve mentioned many times throughout the spring and summer, when it is very humid and dew points are on the high side, it doesn’t take much to trigger a shower or storm. We are now in a very stable environment so there aren’t really any triggers around to produce convection despite the high humidity levels. Also, as we head into September, atmospheric instability tends to decrease since the sun’s intensity is lessening along with other factors. High pressure offshore has been keeping us rain-free and should continue to do so for the remainder of the weekend. See my “Weather Fact” entitled “What is the weather like in September in Hampton Roads?”.

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