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.
A stormy time across the southern Plains today into Saturday. Flooding rains will be the main issue during the period.
Storms will be severe in the southern mid-Atlantic and in the Southern Plains. Tornadoes possible in the Plains Friday.
The focus of the severe weather will be across southern Iowa into western Illnois where storms should develop around the upper-level low.
Storm coming out of the Rockies will bring tornadoes and severe winds to the Plains and Mississippi. Mid-Atlantic has big storms too.
Severe weather will occur this week as a series of storms move across the country.
The pattern will become active in the Plains and Midwest starting Sunday and lasting into next week.