Severe thunderstorms, heavy rainfall, and flooding are possible from the northern Rockies into the Upper Midwest. A derecho is likely across portions of the northern Plains, with several gusts expected to exceed 75 mph. Extreme heat is expected to intensify across much of the Southeast and Tennessee Valley, continuing through much of this week. Read More >
Severe Weather Outbreak on September 11th, 2019
Severe thunderstorms developed north of Denver, by late afternoon, and then tracked east northeast across the plains through early Wednesday evening. Several reports of large hail, up to baseballs at times, along with strong winds occurred in some areas.
Two brief EF2 tornadoes occurred early Wednesday evening west Northwest of Fleming, Colorado. Tornado #1 snapped power poles while tornado #2 demolished a well constructed pole barn.
.TORNADO #1... RATING: EF-2 ESTIMATED PEAK WIND: 118 MPH PATH LENGTH /STATUTE/: 0.5 MILES PATH WIDTH /MAXIMUM/: 50 YARDS FATALITIES: 0 INJURIES: 0 DATE: 09/11/2019 TIME: 703 to 704 PM MDT LOCATION: 9 MILES WEST NORTHWEST OF FLEMING, COLORADO .TORNADO #2... RATING: EF-2 ESTIMATED PEAK WIND: 112 MPH PATH LENGTH /STATUTE/: 0.5 MILES PATH WIDTH /MAXIMUM/: 50 YARDS FATALITIES: 0 INJURIES: 0 DATE: 09/11/2019 TIME: 705 to 706 PM MDT LOCATION: 6 MILES WEST NORTHWEST OF FLEMING, COLORADO EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE FOLLOWING CATEGORIES. EF0...WEAK......65 TO 85 MPH EF1...WEAK......86 TO 110 MPH EF2...STRONG....111 TO 135 MPH EF3...STRONG....136 TO 165 MPH EF4...VIOLENT...166 TO 200 MPH EF5...VIOLENT...>200 MPH NOTE: THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS STORM DATA.
Radar Loop from late Wednesday afternoon through Wednesday evening.
Preliminary Storm Reports for September 11th
Logan County, Colorado tornado tracks.
Colorado storm reports.