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Overview

Two rounds of severe thunderstorms impacted the region on May 20th. The first occurred during the overnight hours between midnight and 5 AM. Then we had a lull during the late morning into midday before additional clusters of storms formed by 2 PM across southeast Missouri and pushed east into west Kentucky through the early evening. There were two tornadoes that happened with the first round, including an EF-1 that struck the north side of Cape Girardeau, MO shortly after 1 AM. There were scattered reports of wind damage and some hail with these storms, although most of the hail was sub-severe (dime sized or smaller).

Tornadoes

Select a tornado from the table to zoom into the track and view more information. The default table view is limited to 8 tracks, but can be scrolled by a mouse wheel or dynamically expanded. Additionally, the table can fill the entire window by clicking the small circular expanding arrow icon at the very top right of the table and returned to its original size by clicking the button again. The side information panel that opens over the map can be closed using the "X" on the upper right corner of the pop-up. Zoom into the map and click damage points to see detailed information and pictures from the surveys.

How to Use the Map

NOTE: times shown below are local to your device's time zone.

Download Data | Instructions




EF-Scale

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0
Weak

65-85 mph
EF1
Moderate
86-110 mph
EF2
Significant
111-135 mph
EF3
Severe
136-165 mph
EF4
Extreme
166-200 mph
EF5
Catastrophic
200+ mph
ef-scale
Tornadoes that fail to impact any ratable structures on the EF-Scale are rated EF-Unknown (EF-U)

Storm Reports

Here is an interactive map of local storm reports issued during this event.


Radar

Here is a radar loop for the 1st part of this event, from 12 to 5 AM CDT.
 
Here is a radar loop for the 2nd part of this event, from 2 to 10 PM CDT.

Photos

Header

Photo Photo Photo Photo
NWS Damage Survey of tornado damage in Cape Girardeau, MO NWS Damage Survey of tornado damage in Cape Girardeau, MO NWS Damage Survey of tornado damage in Union County, IL Thunderstorm Wind Damage near Grand Tower, IL via Orval Rowe 

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