At least one tornado touched down in the St. Louis region on Monday, with National Weather Service survey crews confirming an EF1 twister near Mascoutah, Illinois. The tornado, surveyed in the area around MidAmerica St. Louis Airport, snapped multiple wooden utility poles and peeled metal siding from buildings at a local trucking yard as crews across the metro-east fanned out to map the damage and start the cleanup.
Survey teams from the National Weather Service office in St. Louis were sent to inspect the hardest-hit spots, and the agency stressed that it is the pattern of damage, not simply how bad it looks, that determines whether a tornado is confirmed, according to NWS St. Louis. Emergency managers in Clinton and St. Clair counties reported scattered wind and structural damage and said crews were busy clearing roads and checking on power outages, as reported by RiverBender.
EF1 touchdown near Mascoutah
Damage survey crews rated the Mascoutah tornado an EF1, with estimated peak winds near 95 mph, according to KSDK. Investigators documented snapped wooden utility poles along with metal walls and panels torn from buildings owned by a local trucking company near MidAmerica St. Louis Airport.
Warnings, outages and local response
The National Weather Service issued multiple tornado warnings across the St. Louis metro on Monday as severe cells tracked east, and live local coverage followed warnings from Granite City through the metro-east, according to The Telegraph. County officials said they were concentrating on restoring power and clearing debris and urged residents to steer clear of downed lines and storm-damaged properties, as reported by RiverBender.
How to follow survey results and stay safe
Survey work is still underway, and preliminary data from field teams is being posted to the NWS Damage Viewer. The St. Louis weather office says final ratings will be released once teams wrap up their assessments, according to NWS St. Louis. Residents are advised to avoid downed power lines, take photos of damage for insurance purposes if it is safe to do so, and follow local emergency management pages for updates on road closures and power restoration.
National Weather Service crews are expected to publish a full storm survey in the coming days, and this story will be updated as new information comes in. If you live in the affected area, keep an eye on your county emergency page for the latest safety guidance and available assistance.
