May 21, 2011 Severe Weather Summary Including Large Hail


May 21, 2011

Severe Weather Event

Isolated Severe Storms Featuring Large Hail

National Weather Service Radar loop
from 315 pm CDT to 800 pm CDT on the right. NWS Hastings coverage  area located within orange outlined area labeled "GID".

     (Click Radar Loop To Enlarge)    

Severe Weather Summary:

Continuing an active few days of strong to severe thunderstorms and localized flooding, the afternoon and early evening hours of Saturday, May 21, 2011, featured a handful of fairly isolated severe storms, mainly affecting the eastern half of South Central Nebraska, along with parts of North Central Kansas. The primary instigator for these storms was a lobe of mid-level energy swinging across the Central Plains along the southern periphery of a powerful, closed mid-level low pressure system spinning through western South Dakota. While a few areas saw locally heavy rainfall, by far the main impact from these storms was large hail, with numerous reports of hailstones from quarter to golf ball size, and even hail up to 3 inches in diameter in the city of York.

Here are a few "highlights" of the event, based on reports from storm spotters/chasers, local law enforcement, emergency management, and the public:

  • Golf ball to 3-inch diameter hail in and near York, Nebraska in the 500-520 PM time frame (see photos below)
  • Golf ball size hail covering the ground 3 miles southwest of Gresham, Nebraska at 601 PM
  • Half-dollar to golf ball size hail along a path from near Kirwin to Portis, Kansas in the 530-615 PM time frame

For a complete listing of storm reports, please click the top left linked image below...  


 May 21, 2011 Storm Reports.
Click image for detailed reports.
Large hail in York, NE. 
Photograph by Steve Green.
 Large 3 inch hailstone in York, NE. 
Photograph by Brian Welch.
Large hailstones in York, NE. 
Photograph by Brian Welch.


This page was composed by the staff at the National Weather Service in Hastings, Nebraska.

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