UPDATE 6:35 EDT:
The Weather Channel is reporting that a tornado has been reported in Hampton, NE., and residents of nearby Bradshaw have been advised to take cover. Bradshaw is about 60 miles west of Lincoln.
The Weather Channel is reporting a large tornado northwest of Amherst, NE. near the town of Kearney.
It is also reporting a "beastly supercell with 3 separate rotations" that has caused residential damage South of Elm Creek, NE.
From the National Weather Service:
AT 426 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A CONFIRMED TORNADO. THIS TORNADO WAS LOCATED NEAR AMHERST...OR 16 MILES NORTHWEST OF KEARNEY...MOVING NORTHEAST AT 20 MPH.
The National Weather Service advises people in the town of Pleasanton to take cover:
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.