An area of upper level low pressure slowly moved across the central Plains during the September 22nd through the 23rd time frame. Significant moisture was in place across the mid Missouri River Valley ahead of this system. This combination led to scattered to numerous thunderstorms over eastern Nebraska and western Iowa starting on the 22nd and continuing into the day on the 23rd. The heavy persistent thunderstorms, especially late in the night and into the early morning hours on the 23rd led to significant flash flooding across parts of western Iowa, specifically in Council Bluffs.

Hail in KNOX, NEBRASKA
From 22-SEP-15 21:44:00 to 22-SEP-15 21:44:00 (CST-6)
Location: WAUSA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KNOX, NEBRASKA
From 22-SEP-15 22:21:00 to 22-SEP-15 22:21:00 (CST-6)
Location: BLOOMFIELD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in DOUGLAS, NEBRASKA
From 23-SEP-15 03:39:00 to 23-SEP-15 03:39:00 (CST-6)
Location: (OMA)EPPLEY FLD OMAH
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Measured at Eppley Airfield in northeast Omaha.

Tornado in BUTLER, NEBRASKA
From 23-SEP-15 16:44:00 to 23-SEP-15 16:46:00 (CST-6)
Location: DAVID CITY ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Video obtained from Twitter showed a brief tornado touchdown in rural Butler County. A survey from the local emergency management indicated no damage from the tornado.

Hail in STANTON, NEBRASKA
From 22-SEP-15 09:02:00 to 22-SEP-15 09:02:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in STANTON, NEBRASKA
From 22-SEP-15 09:38:00 to 22-SEP-15 09:38:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STANTON, NEBRASKA
From 22-SEP-15 09:55:00 to 22-SEP-15 09:55:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STANTON, NEBRASKA
From 22-SEP-15 09:30:00 to 22-SEP-15 09:30:00 (CST-6)
Location: PILGER
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in CUMING, NEBRASKA
From 22-SEP-15 10:15:00 to 22-SEP-15 10:15:00 (CST-6)
Location: WISNER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in THURSTON, NEBRASKA
From 22-SEP-15 10:20:00 to 22-SEP-15 10:20:00 (CST-6)
Location: PENDER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in STANTON, NEBRASKA
From 22-SEP-15 09:35:00 to 22-SEP-15 09:35:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in CUMING, NEBRASKA
From 22-SEP-15 10:30:00 to 22-SEP-15 10:30:00 (CST-6)
Location: BEEMER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in STANTON, NEBRASKA
From 22-SEP-15 09:43:00 to 22-SEP-15 09:43:00 (CST-6)
Location: STANTON
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Significant damage to a roof and siding reported.

Hail in PIERCE, NEBRASKA
From 22-SEP-15 08:08:00 to 22-SEP-15 08:08:00 (CST-6)
Location: PIERCE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in MADISON, NEBRASKA
From 22-SEP-15 08:50:00 to 22-SEP-15 08:50:00 (CST-6)
Location: NORFOLK
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in BURT, NEBRASKA
From 22-SEP-15 11:25:00 to 22-SEP-15 11:25:00 (CST-6)
Location: DECATUR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CUMING, NEBRASKA
From 22-SEP-15 12:30:00 to 22-SEP-15 12:30:00 (CST-6)
Location: BANCROFT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Hail in PLATTE, NEBRASKA
From 22-SEP-15 21:07:00 to 22-SEP-15 21:07:00 (CST-6)
Location: SHELDONVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PLATTE, NEBRASKA
From 22-SEP-15 21:08:00 to 22-SEP-15 21:08:00 (CST-6)
Location: SHELDONVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter