A brief, EF-0 tornado formed and tracked east-southeast for a little less than 2 miles, near the far north-central border of Dawson County on this Tuesday evening. This tornado occurred over a sparsely-populated area and no damage was reported. The parent storm rapidly developed along the Custer-Dawson County line, north of Cozad, just after 5 p.m. CDT. Golf ball size hail also occurred with this storm. By 6 p.m. CDT, this storm weakened as it moved southeast, but two new storms developed in its wake and headed northeast into Sherman and Valley counties by 8 p.m. CDT. The western-most storm was a prolific hail-producer, with multiple reports of hail as large as baseballs over southeastern Custer County. This storm was the left-mover of a supercell that split along the Custer-Dawson County line just before 6:30 p.m. CDT. Shortly before dissipating over southern Valley County, the storm produced severe hail near Arcadia. The largest hail was the size of golf balls. The right-mover dissipated over eastern Dawson County. Other storms formed over Frontier County and advanced southeastward into Gosper and Furnas counties. Several people observed severe hail in the town of Wilsonville, in southwestern Furnas county. The largest hail reported was the size of golf balls.
The mesoscale setup for this event was unique. An old front was sinking southward and dissipating. By late afternoon, its remnant trough was over northern Kansas. A lee-side low had moved along it, and was located over north central Kansas.  Resultant low-level winds were from the northeast over South Central Nebraska, even as a new cold front was sagging southward from northern Nebraska. Temperatures were near 90 degrees with dewpoints near 70 degrees. This resulted in an extremely unstable atmosphere, with MLCAPE between 2000 and 3000 J/kg. Deep layer shear was around 40 knots.

Hail in FURNAS, NEBRASKA
From 09-JUL-13 19:23:00 to 09-JUL-13 19:23:00 (CST-6)
Location: WILSONVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in VALLEY, NEBRASKA
From 09-JUL-13 19:32:00 to 09-JUL-13 19:32:00 (CST-6)
Location: ARCADIA
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 500.00K
Reported by: Emergency Manager

Hail in FURNAS, NEBRASKA
From 09-JUL-13 19:30:00 to 09-JUL-13 19:40:00 (CST-6)
Location: WILSONVILLE
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 500.00K
Reported by: Trained Spotter

Hail in VALLEY, NEBRASKA
From 09-JUL-13 19:46:00 to 09-JUL-13 19:46:00 (CST-6)
Location: ARCADIA
Magnitude: 1.25 
Property damage: 10.00K
Crop damage: 250.00K
Reported by: Trained Spotter

Tornado in DAWSON, NEBRASKA
From 09-JUL-13 16:14:00 to 09-JUL-13 16:24:00 (CST-6)
Location: BUFFALO
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A landspout tornado touched down in far northern portions of Dawson County during the late afternoon.  It was on the ground for approximately 10 minutes, with an estimated maximum width of 50 yards and maximum wind speed of 75 MPH.  No damage was reported from this tornado.

Hail in DAWSON, NEBRASKA
From 09-JUL-13 16:25:00 to 09-JUL-13 16:25:00 (CST-6)
Location: BUFFALO
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 500.00K
Reported by: 911 Call Center