Wednesday, August 15, 2012

Scattered Afternoon Thunder Looms

It's a muggy start to the day around the region with some areas of low clouds and fog in the wake of thunderstorms that moved through portions of the region last night.   Reading picked up nearly a half an inch of rain from storms that rolled through just after Midnight, some isolated locations picking up more than that. Those storms have pushed into New England but the instability and moisture in the atmosphere remain.

Once any morning low clouds and fog burn off, skies go to a mix of sun and clouds later on, with increasing instability through the day as the result of sunshine.  A disturbance will push a slow moving frontal boundary off the coast this afternoon and evening and will help fire up thunderstorms later on around the region.  We're under a slight risk for severe weather this afternoon and evening, with gusty winds and hail the chief threats in the strongest of storms.   Additionally, more heavy rains are possible in the stronger thunderstorms and it would not surprise if we get a few flood advisories and warnings in parts of the region as heavy rainfall falls on soils that are getting bogged down from recent rainfall in much of the region.

While any of us could see thunderstorm development this afternoon, they are more likely to fire east of I-95 (New Jersey and Delaware) than they are west of the river.  Thunder development should take place after 2 PM locally, with storms possible until tonight.

Highs this afternoon could get into the middle and upper 80's -- best shot at upper 80's residing in Delaware and South Jersey, with everyone else getting into the middle 80's for a high.  Adding humidity to the mix and it will feel a few degrees warmer.  A typical summer's day around the region with the threat for more afternoon thunderstorms.