National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. 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/
nws logo Media use of NWS Web News Stories is encouraged!
Please acknowledge the NWS as the source of any news information accessed from this site.
nws logo