Two separate thunderstorm events produced a little severe weather and flash flooding on this Friday. The first episode was associated with a couple supercells that formed near McCook, Nebraska the prior evening. These storms evolved into a small multicell cluster that was joined by a few other storms as it moved southeast across north-central Kansas between midnight at 3 a.m. CST. This small cluster was mostly sub-severe, producing penny size hail and measured winds of 50-55 mph in a few spots. However, it did produce a severe wind gust of 61 mph in Logan. Later in the day, between 5 and 6 pm CST, several thunderstorms formed over Rooks, Phillips, and Smith Counties. They quickly congealed into a multicell cluster. This cluster remained quasi-stationary between 5:30 and 8:30 p.m., with the most persistent heavy rain over southeastern Phillips and northeastern Rooks Counties. Three to six inches of rain were measured in this short time span and this resulted in flash flooding, with numerous gravel roads under water and some washed out in spots. One of these storms did produce hail to the size of quarters in Stockton, which is in Rooks County.
The overnight storms occurred near a dissipating frontal boundary, with no forcing aloft. The late afternoon and evening storms formed along a weak cold front that had dropped through Nebraska, during the day, and was slowing its forward progress over north central Kansas. In the upper levels, a broad ridge encompassed the Plains atop a subtropical high over the Southern Plains. The Central Plains were on the southern fringe of the Westerlies. Surface temperatures in advance of the storms were in the mid 80s, with dewpoints near 70. With mid-level lapse rates of 7.5 deg C/km, MLCAPE values were between 2000 and 3000 J/kg. Deep layer shear was between 30 and 40 knots.

Flash Flood in PHILLIPS, KANSAS
From 24-JUL-15 22:00:00 to 25-JUL-15 01:00:00 (CST-6)
Location: KIRWIN RES
Flood cause: Heavy Rain
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall fell across the area, with the highest totals near 6 inches. This rain resulted in numerous roads with water running over them. Some of the gravel roads had enough water running over them to wash away the rock covering.

Flash Flood in ROOKS, KANSAS
From 24-JUL-15 22:00:00 to 25-JUL-15 01:00:00 (CST-6)
Location: STOCKTON
Flood cause: Heavy Rain
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall fell across the area, with the highest totals near 6 inches. This rain resulted in numerous roads with water running over them. Some of the gravel roads had enough water running over them to wash away the rock covering.

Hail in MITCHELL, KANSAS
From 24-JUL-15 01:16:00 to 24-JUL-15 01:16:00 (CST-6)
Location: BELOIT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Thunderstorm Wind in PHILLIPS, KANSAS
From 24-JUL-15 00:19:00 to 24-JUL-15 00:19:00 (CST-6)
Location: LOGAN
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Hail in ROOKS, KANSAS
From 24-JUL-15 20:03:00 to 24-JUL-15 20:03:00 (CST-6)
Location: STOCKTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center