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Eastern and Western Storms

A strong cold front will sweep across the eastern U.S. with gusty winds, showers and thunderstorms, and lake effect snow. A slow moving western system will bring locally heavy rain that could cause flash flooding and heavy mountain snow. Heavy snow and blowing snow is expected across much of the northern 2/3rds of Alaska from two strong weather systems. Read More >

Overview

A broken line of supercellular thunderstorms (rotating thunderstorms) broke out on the afternoon of Saturday, December 1st, 2018. Three of of these thunderstorms produced multiple tornadoes across portions of western and central Illinois. Below are the tornadoes that affected the NWS St. Louis county warning area. For more detailed, interactive maps, please visit: https://apps.dat.noaa.gov/StormDamage/DamageViewer/