These storms extend eastward to the storm that is producing Quarter sized hail in Benton County…

…SIGNIFICANT WEATHER ADVISORY FOR NORTHERN TAMA…SOUTHERN BLACK HAWK AND SOUTHERN GRUNDY COUNTIES UNTIL 1130 PM CDT…

AT 1055 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A LINE OF A STRONG THUNDERSTORM 5 MILES SOUTH OF GRUNDY CENTER…OR 26 MILES SOUTHWEST OF WATERLOO…MOVING EAST AT 35 MPH.

PENNY SIZE HAIL…AND WINDS IN EXCESS OF 45 MPH ARE EXPECTED WITH THIS STORM. THE STORMS WILL ALSO PRODUCE HEAVY RAINFALL WITH UP TO ONE TO TWO INCHES OF RAINFALL POSSIBLE IN A SHORT PERIOD OF TIME.