HIGHER HUMIDITY LEVELS RETURN TO HAMPTON ROADS… TYPICAL MID-AUGUST WEATHER SEEMS LIKELY WELL INTO NEXT WEEK

I’ve noticed since I moved to Virginia Beach back in 1998 that whenever a warmer and more humid air mass moves into the region during the nighttime hours in the late spring and summer, showers and thunderstorms sometimes develop. And sure enough, many folks were awoken last night to thunder and lightning. About a third of an inch of rain fell in my backyard but higher amounts were reported further to the north. The relatively pleasant air mass that moved into Hampton Roads on Thursday is now history, and we will be returning to a more typical weather pattern for the middle of August. As I’ve said before in previous posts, when humidity levels are high, it doesn’t take much of a trigger to cause showers and thunderstorms to pop up. Any type of boundary can be a trigger. This time of year, we see weakening cold fronts that stall out in our region causing a focal point for convection. Sea breeze boundaries can also cause convection as well as boundaries from thunderstorm downdrafts. Upper level disturbances, however, are usually the cause of thunderstorm development. So, the bottom line is that we will see a string of typical mid-August weather with a chance each day of a shower or storm. Some days the rain chances will be higher especially when a cold front approaches late on Monday and Tuesday… The tropical Atlantic is quiet for now but a disturbance has just moved off of the African coast that will have to be watched.

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