1. The snow in the Midwest will be an unprecedented event for that area. I have never seen that much snow in early May across that area. In fact, some of the research done by Alex shows that many of the major cities had up to 2 inches of snow for early May as the most snow. While I think 3-6 inches of snow can fall, it's not out of the question due to the convection and pivoting of the precip, that some local areas get up to 10 inches of snow.
2. Heavy thunderstorms today in the area shown on the map. Storms in that area will produce large hail and damaging winds. The storms will morph into a heavy rain area which could result in flooding before that change to snow occurs.
3. The upper-level low will settle in the Midwest for a few days, and that will spin heavy rain across the Mississippi Valley. The heavy rains will only aggravate the flooding problems.
Storms will continue to roam along the front today. Some of the storms will become severe. More storms will hit the Upper Midwest Sunday.
The pattern will produce heavy thunderstorms each day as trhe trough remains in the eastern part of the country.
Storms will develop under the trough today, Some of the storms will be heavy at times with gusty winds and hail
Severe storms with damaging winds and hail will hit parts of the Ohio Valley today. The heat wave continues this week in the West.
An unusual storm will bring severe weather today and signifcant flooding potential for Saturday.
Active through this weekend with severe weather and heavy rains. Floodin may become an issue by Saturday.