Henry Margusity

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Interesting Weather Late Wednesday through Thursday

June 10, 2013; 8:58 AM ET


1. The severe weather today and Tuesday will be just heavy thunderstorms as shown on the maps. The main impacts will be heavy rains and locally damaging wind gusts.

2. Wednesday through Thursday becomes interesting in the Midwest, Ohio Valley into the mid-Atlantic. The upper-level system over California this morning will come up and over the ridge this week. By late Wednesday, a cluster of storms will develop in the Midwest and as the low-level jet blows hot air into the system, we should see a cluster of thunderstorms moving across the Ohio Valley. Thursday, that same system will cross the Appalachians and produce a swath of heavy rains and severe storms from West Virginia to Delaware. It's hard to predict if the cluster of storms actually becomes a derecho or not, but in any case, we will see flash flooding and wind damage. I am concerned for flash flooding across southern Pennsylvania and Maryland where heavy rains are falling this morning. So all in all, an interesting system this week.

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Henry Margusity
AccuWeather.com severe weather expert, Henry Margusity, offers the Meteorological Madness blog including detailed analysis of severe weather across the US.