Scattered thunderstorms developed in central Nebraska near a warm front during the early morning hours of September 22nd.  The storms intensified as they moved into northeast Nebraska producing some very large hail and areas of heavy rain.  These storms moved out of northeast Nebraska early in the afternoon of the 22nd.  However, additional thunderstorms redeveloped from central into northeast Nebraska later that afternoon and evening.  Heavy rain from these storms produced local flash flooding in northeast Nebraska in addition to isolated severe weather.

Thunderstorm Wind in KNOX, NEBRASKA
From 22-SEP-10 19:19:00 to 22-SEP-10 19:19:00 (CST-6)
Location: VERDIGRE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds that were estimated at 60 mph were accompanied by small hail.

Flash Flood in KNOX, NEBRASKA
From 22-SEP-10 20:41:00 to 22-SEP-10 23:41:00 (CST-6)
Location: CROFTON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rainfall of over 7 inches was reported in less than 24 hours in the Crofton area.  The second round of heavy rain to hit the area during the evening of the 22nd produced flash flooding of streets and a park in Crofton.  Two sections of the fence around a baseball field were taken out by flood waters.

Flash Flood in KNOX, NEBRASKA
From 23-SEP-10 06:35:00 to 23-SEP-10 09:35:00 (CST-6)
Location: SANTEE
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Rainfall of 6 to 7 inches fell on Sept. 22nd which produced flash flooding along Bazile Creek reducing Highway 12 to one lane east of Niobrara.

Hail in KNOX, NEBRASKA
From 22-SEP-10 09:11:00 to 22-SEP-10 09:11:00 (CST-6)
Location: BLOOMFIELD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CEDAR, NEBRASKA
From 22-SEP-10 09:51:00 to 22-SEP-10 09:51:00 (CST-6)
Location: WYNOT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in KNOX, NEBRASKA
From 22-SEP-10 10:35:00 to 22-SEP-10 10:35:00 (CST-6)
Location: VERDEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CEDAR, NEBRASKA
From 22-SEP-10 10:01:00 to 22-SEP-10 10:01:00 (CST-6)
Location: MENOMINEE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KNOX, NEBRASKA
From 22-SEP-10 10:57:00 to 22-SEP-10 10:57:00 (CST-6)
Location: VENUS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KNOX, NEBRASKA
From 22-SEP-10 11:12:00 to 22-SEP-10 11:12:00 (CST-6)
Location: VERDIGRE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in KNOX, NEBRASKA
From 22-SEP-10 09:26:00 to 22-SEP-10 09:44:00 (CST-6)
Location: CROFTON
Magnitude: 4.25 
Reported by: Law Enforcement

Hail up to a little over 4 inches in diameter fell in the Crofton area.  The hail lasted at least 15 minutes but was mostly smaller than golf ball-size.

Heavy Rain in CEDAR, NEBRASKA
From 22-SEP-10 19:30:00 to 23-SEP-10 05:08:00 (CST-6)
Location: ST HELENA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A storm total rainfall of over 6 inches was reported in the St. Helena area.

Hail in KNOX, NEBRASKA
From 22-SEP-10 09:20:00 to 22-SEP-10 09:35:00 (CST-6)
Location: BLOOMFIELD
Magnitude: 3.00 
Reported by: Newspaper

Hail up to around 3 inches in diameter was reported north of Bloomfield.  The hail lasted for around 15 minutes and the larger hailstones were very jagged.  However, because most of the larger hail fell before winds picked up, damage was minimal according to the Bloomfield Monitor.

Heavy Rain in KNOX, NEBRASKA
From 22-SEP-10 20:00:00 to 23-SEP-10 05:00:00 (CST-6)
Location: CROFTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A storm total of over 7 inches of rain was reported in the Crofton area.  Besides causing flash flooding of a local creek in the area, most basements in the area were flooded by the heavy rain.