Apr. 11, 2012: A firefighter stands near a shoulder-deep wall of hail, water and ice following storms in northern Potter County. (National Weather Service)
Apr. 12, 2012: A National Weather Service employee holds some of the hail that fell over the area on the night of April 11. (National Weather Service)
Apr. 12, 2012: The heavy rains carved a path through the large hail piles, brown from dust kicked up by high winds. (National Weather Service)
Apr. 12, 2012: The largest hailstones were still ping-pong ball size even after sitting out overnight and morning, according to the NWS. (National Weather Service)
Apr. 12, 2012: 21 hours later, the largest hail stone that remains is still about the size of a ping pong ball, the National Weather Service wrote on Facebook. (National Weather Service)
April 11, 2012: A motorist sits in a truck partially buried in slushy hail near Amarillo, Texas. Weather service crews are assessing the damage from a Texas Panhandle storm that dumped several feet of nickel-sized hail, stranded motorists in muddy, hail drifts and closed a highway for several hours. (AP Photo/Courtesy of Amarillo/Potter/Randall Office of Emergency Management)
Apr. 12, 2012: Hail piled up along the side of the road, following gusty winds and tremendous storms in Texas. (National Weather Service)
Apr. 12, 2012: Another huge hail pile over 20 hours after the event. The hail is brown due to the high moisture in the area and gusty winds that blew dust around that stuck to the hail. (National Weather Service)