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Overview

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.

NOTE: An additional 4 tornadoes occurred on April 27th that produced no observable damage and were rated EF-U.

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 and Warnings


Radar

Radar Image Radar Image Radar Image
Radar Loop from 3 PM to 11 PM CDT on April 27th Radar image as the Bingham/Ashby Tornado crossed Highway 2. Radar image of the Merritt Tornado

Environment

Environment Environment Environment Environment
Figure 1: 12Z 250mb Map Figure 2: 12Z 500mb Map Figure 3: 12Z 850mb Map Figure 4: 21Z Surface Obs


Near-storm environment summary.

Environment Environment Environment Environment
Figure 5: Surface Based CAPE Figure 6: 0-3km Storm Relative Helicity Figure 7: Supercell Composite Parameter Figure 8: Significant Tornado Parameter

 


Photos & Video

Photo Photo Photo Photo
Tornado crossing Highway 2.
(Source: Gage Gibson)
Large hail near Ashby, NE.
(Source: Dan Fitts)
Tornado near Bingham, NE.
(Source: John McKinney)
Tornado NW of Hyannis, NE.
(Source: Tim H)

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