Isolated strong storms developed during the late afternoon hours of July 27th, 2009. A few storms briefly showed supercell characteristics. One of these storms produced a 75 mph wind gust at the O'Donnell 1N mesonet station at 6:20 pm CDT. The O'Donnell mesonet station recorded 1.06 inches of rain in 15 minutes with nickel-sized hail reported near the station.

Lynn County storm as it passed over the O'Donnell mesonet station. Time of picture is 6:20 pm...looking northeast from 7 miles southwest of O'Donnell in Dawson County. Photo Credit: Mark Roye.

KLBB radar reflectivity image for 6:16 pm CDT at 1.3-degree elevation. Click here for radar loop : REFLECTIVITY LOOP (1.3-degrees) for 5:45 pm to 7:00 pm CDT on JULY 27th, 2009.

O'Donnell 1N meteogram plot showing the severe winds.

Graham 5SW (MACY RANCH) meteogram plot showing heavy rain.