...MAY 22 LANCASTER COUNTY TORNADO UPGRADED TO F-4 INTENSITY... 

A SURVEY TEAM FROM THE OMAHA/VALLEY NATIONAL WEATHER SERVICE OFFICE CONTINUED TO SURVEY DAMAGE FROM SATURDAY NIGHT'S STORM IN LANCASTER COUNTY.

THE TEAM DETERMINED THAT THE TORNADO STRENGTH WAS RATED F-4 ON THE FUJITA DAMAGE SCALE.  F-4 TORNADO WINDS ARE BETWEEN 207 AND 260 MPH.  THE TORNADO WAS EXTREMELY WIDE. 

THE TEAM WILL CONTINUE TO SURVEY THE DAMAGE THIS AFTERNOON TO DETERMINE THE TRACK LENGTH.  ADDITIONAL INFORMATION WILL BE RELEASED AS SOON AS IT BECOMES AVAILABLE. 
 

DANIEL NIETFELD
SCIENCE AND OPERATIONS OFFICER
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE