Monday, July 27, 2009

More Thunderstorms Expected Monday


More thunderstorms are expected in much of Central Virginia from lunchtime through Monday evening. Afternoon dewpoint temperatures are expected to remain in the upper 60's and low 70's, indicating ample low-level moisture, and air temperatures should climb into the mid- to upper-80's this afternoon. The warmth and humidity will combine as fuel for afternoon thunderstorms as the lower atmosphere destabilizes.
Most of the storms should remain below severe limits, but still be strong with wind gusts to 40mph, small hail, frequent lightning, and heavy rain that can lead to flash flooding. A few of these storms may become marginally severe with hail up to the size of pennies or nickels, and damaging wind gusts above 60mph. This threat does warrant a slight risk area for much of Central and Eastern Virginia this afternoon and evening.

Overnight Thunderstorms Not Severe, But Still Loud!

Unless you are a sound sleeper, you probably heard the thunderstorms rolling through Central Virginia overnight. None were severe, but they certainly had a lot of heavy rain and lightning! In fact, these storms produced around 3/4 of an inch as they moved through. At Richmond International Airport, 0.8" of rain was recorded between 1 a.m. and 3 a.m.

These scattered storms have continued to move eastward through the state through the early, pre-dawn hours, but have never strengthened to become severe. Still, though, they continue to produce heavy rainfall that leads to brief flooding, frequent lightning, gusty winds to 40 mph, and small hail at times.
--Carrie

Scattered Showers Overnight

Showers and isolated thunderstorms continue to develop across the area. I'm expecting this trend to continue for the next few hours, then showers will taper by early Monday morning. Another round of rain will then return late Monday morning and into the afternoon.