Thursday will bring a massive blizzard to portions of the upper Midwest, flooding to portions of the Great Lakes and Ohio River Valley and even severe weather including the potential for tornadoes across Indiana/Ohio and further south into Kentucky, Tennessee and Mississippi and Alabama. We are about to break down every threat right here! To access maps like the ones below for yourself and look specifically at your area, click here!
As a low pressure system rapidly deepens across the Upper Midwest into the Great Lakes, heavy snow will begin to fall to the northwest of the low. In addition to this heavy snow, very strong winds will create total whiteout conditions. Blizzard WARNINGS and Winter Storm Warnings and Watches are in effect. The image above shows Blizzard Warnings in Red, with Winter Storm Warnings in Pink. Our Blizzard Conditions index hints at the area across Iowa as the hotspot for potential Blizzard Conditions.
A very moist and moderately unstable airmass, ahead of a powerful cold front, will set the stage for severe thunderstorms Thursday afternoon and evening.. The Storm Prediction Center has outlined an area for severe weather. Thunderstorms will develop along and ahead of the front and pose the risk for severe weather including damaging winds, large hail and possibly even some tornadoes. Below are some various images detailing the threat, including the SPC outlook as well as some instability and wind shear forecasts.
As the low pressure moves across the Great Lakes, numerous thunderstorms will develop and move across the same areas. This, in addition to snow that will be melted has led to Flood Watches being issued across portions of Illinois and Indiana.. Here is the total precipitation forecast by the Hi Res NAM.
As the low pressure system rapidly deepens, very strong winds will be felt across a very large area.. Here is a graphic detailing the surface wind gusts forecast.
You can access maps like these and look more specifically at your area by clicking here!