A fairly quick-hitting round of severe thunderstorms affected southwest portions of South Central Nebraska on this Monday evening, marking the third day in a row that severe weather affected parts of the 24-county area. These storms were most concentrated across western Dawson, Gosper, Phelps, Furnas and Franklin Counties, first sliding into the area from the northwest around 7 PM CDT, and exiting south into northern Kansas around 930 PM. In terms of storm mode, this event featured a combination of southeast-moving multicells along with a few embedded, outflow-dominant supercells. Severe weather reports included a mix of damaging winds and hail up to quarter size, with Gosper County likely experiencing the greatest impact with reports of hail driven by 60-70 MPH winds across primarily the northeast half of the county.
Although some of these storms developed directly across the area, the initial activity that pushed into western Dawson and Gosper Counties had been approaching from west central Nebraska for a few hours. These southeastward moving storms developed in a mesoscale environment featuring around 2000 J/kg mixed-layer CAPE, and seasonably strong deep-layer vertical wind shear of at least 40 knots. Aloft, west-northwest flow in the mid-levels was enhanced by a shortwave trough tracking southeast across Nebraska. At the surface, the environment was somewhat unusual for early evening severe weather development, given that winds were light and northerly behind a weak cold front stretched across Kansas.

Hail in PHELPS, NEBRASKA
From 08-AUG-11 19:04:00 to 08-AUG-11 19:04:00 (CST-6)
Location: HOLDREGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PHELPS, NEBRASKA
From 08-AUG-11 19:15:00 to 08-AUG-11 19:15:00 (CST-6)
Location: HOLDREGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in GOSPER, NEBRASKA
From 08-AUG-11 18:39:00 to 08-AUG-11 18:39:00 (CST-6)
Location: ELWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Wind gusts were estimated at 60 MPH, resulting in small tree limbs being knocked down.

Thunderstorm Wind in GOSPER, NEBRASKA
From 08-AUG-11 18:05:00 to 08-AUG-11 18:05:00 (CST-6)
Location: JOHNSON RES
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 65 MPH.

Thunderstorm Wind in GOSPER, NEBRASKA
From 08-AUG-11 18:50:00 to 08-AUG-11 18:50:00 (CST-6)
Location: ELWOOD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Wind gusts were estimated at 60 to 70 MPH.

Hail in PHELPS, NEBRASKA
From 08-AUG-11 19:00:00 to 08-AUG-11 19:00:00 (CST-6)
Location: FUNK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in GOSPER, NEBRASKA
From 08-AUG-11 19:00:00 to 08-AUG-11 19:00:00 (CST-6)
Location: SMITHFIELD
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gusts were estimated at 65 MPH.

Hail in FRANKLIN, NEBRASKA
From 08-AUG-11 19:50:00 to 08-AUG-11 19:50:00 (CST-6)
Location: HILDRETH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GOSPER, NEBRASKA
From 08-AUG-11 18:50:00 to 08-AUG-11 18:50:00 (CST-6)
Location: ELWOOD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser