Strong thunderstorms are threatening to ruin St. Patrick's Day celebrations from southern Missouri to southern Indiana this evening.
The stage is set for more potent thunderstorms to erupt from St. Louis and Poplar Bluff, Mo., to Louisville, Ky., this evening with record warmth and moist air in place.
Other cities in the path of the thunderstorms include Cape Girardeau, Mo., Paducah, Ky., and Evansville, Ind.
Some of the same areas being threatened this St. Patrick's Day were the targets of the massive tornado outbreak earlier this month.
A repeat of that outbreak is not expected since any tornado that touches down into this evening will be an isolated event. Damaging winds, hail and flooding downpours are greater concerns.
Even if a storm-related warning is not issued for your area, be sure to seek shelter immediately once thunder is heard. The sound of thunder means you are close enough to get struck by lightning.
The severe weather danger will lessen across the lower Ohio Valley later this evening following the loss of daytime heating.
Attention will then turn toward an outbreak of severe weather, including tornadoes, that will expand from the southern Plains to the South and Ohio Valley next week.
Cold air and flurries are in store for the New Hampshire primary on Tuesday but should not significantly impact voter turnout.
Snow and slippery travel will arrive in the mid-Atlantic states prior to the middle of the week.
Waves of arctic air invading the eastern half of the United States this week will culminate with the coldest weather of the season so far for some areas by the Valentine's Day weekend.
Chilly air will visit New Orleans this year for the annual Mardi Gras celebrations and linger over the city until later in the week.
Warmer air will build from California to Washington into Tuesday raising temperatures to near-record levels and increasing the risk of wildfires in some areas.
Denver Broncos fans celebrating the Super Bowl win will see ideal conditions for Tuesday's parade and pep rally.
Snowstorm, worst of season. 12-18 inches in the western mountains . . . a foot common statewide up to 24 inches in the mountains of Vermont, between Bristol and Waitsfield. 16 inches in other mountain areas, 12-14 inches in valleys, 14 inches at Albany, NY and 10 inches at Plattsburgh, NY.
Chicago, FL (1987)
Wind gusts of 65-70 mph from the north and northeast produced 15 foot waves on Lake Michigan. There were extensive shoreline erosion resulting in millions of dollars, and boulders 6 feet in diameter were pushed on shore.
60-80 mph winds from a powerful storm in the Pacific.