|Waterspouts are possible over the Great Lakes again today.|
The cool weather this morning stretches all the way down to the Gulf of Mexico with record lows at Pensacola, Florida of 64F and Mobile, Alabama at 63F, one degree off their coldest July morning on record. The cool air aloft has produced numerous showers and thunderstorms over the Great Lakes, several that produced waterspouts on Wednesday. The threat is there again today especially over Lake Erie. Waterspouts are similar to tornadoes but generally weaker. They can certainly upset smaller watercraft.
Meanwhile it is warm in the west with temperatures once again soaring into the middle 30's. Bow Island, Alberta hit 35.2C (96F) on Wednesday while Calgary was 32C (90F). Calgary also had a rare heat burst in the early morning hours of Wednesday. Heat bursts occur from collapsing thunderstorms. Around 1am, a gusty southwest winds hit 85km/h at the airport with a dry dewpoint of 1C (humidity was less than 15%). Meanwhile the mercury shot up to 29C (85F), almost desert like.