The National Weather Service has issued a Severe Thunderstorm Watch for much of Western New York and the Finger Lakes region, effective through 10 p.m. This development follows a day of rapidly building atmospheric instability,

The first severe thunderstorm warning of the day in Minnesota has been issued, with the NWS Sioux Falls saying the warning is in effect in Beaver Creek in southwestern Minnesota, where 2-inch size hail is possible. It has now expanded to three Minnesota counties.