A powerful and slow moving storm system spread heavy rainfall from the southern Plains into the central Plains over a two day period from 13th through the 14th of December. The closed upper level low pressure moved from the southern Plains on the 13th through the central Plains on the 14th and along and to the northwest of this track very heavy rainfall was observed. Rainfall records were set across the area with Omaha setting daily rainfall records for 3 consecutive days from the 13th through the 15th. The system was anomalously warm for December and thunderstorms were observed in many areas on the 13th of December. Colder air finally did work into the storm during the early morning of the 15th and resulted in some light snow over east central Nebraska and southwest Iowa. The most significant aspect of the storm system though was the resulting river flooding for the region.

Flood in MONTGOMERY, IOWA
From 14-DEC-15 06:30:00 to 15-DEC-15 12:00:00 (CST-6)
Location: RED OAK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rainfall over a two-day period in mid December brough the East Nishnabotna River above flood stage with a crest to just below moderate stage. The crest reached 21.02 feet in the early afternoon hours of December 14th. This was 3.02 feet above flood stage.

Flood in POTTAWATTAMIE, IOWA
From 14-DEC-15 15:30:00 to 15-DEC-15 22:15:00 (CST-6)
Location: HANCOCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rainfall over a two-day period in mid Decmbert brought the West Nishnabotna River near Hancock above flood stage with a crest to just above the flood stage of 14.0 feet. The river crested on the evening of December 14th at a state of 14.32 feet.

Flood in FREMONT, IOWA
From 14-DEC-15 06:30:00 to 15-DEC-15 18:00:00 (CST-6)
Location: RANDOLPH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rainfall during mid December caused the western Nishnabotna River over flood state at Randolph. The river crested at 21.04 feet during the early morning on the 15th. The flooding was confined to low-land agricultural areas.

Flood in FREMONT, IOWA
From 13-DEC-15 23:11:00 to 17-DEC-15 19:02:00 (CST-6)
Location: RIVERTON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rainfall during mid December led to river flooding along both the East and West Nishnabotna Rivers. The West Nishnabotna River crested during the late afternoon on the 14th, while the East Nishnabotna crested late on the 15th. The river flooding was generally confined to low agricultural land along the rivers, but State Highway J46 was closed due to flooding.

Flood in FREMONT, IOWA
From 14-DEC-15 13:54:00 to 17-DEC-15 01:52:00 (CST-6)
Location: HAMBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rainfall over a two-day period in mid December brought the Nishnabotna River above flood stage with a crest to just above moderate stage. The crest reached 27.27 feet in the early evening hours of December 15th. This was 2.27 feet above flood stage. The majority of the flooding was confined to areas within the levee system, but State Highway 275 to the southeast of Hamburg did see some water across the road.

Flood in PAGE, IOWA
From 14-DEC-15 05:00:00 to 14-DEC-15 22:39:00 (CST-6)
Location: HEPBURN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rainfall over a two-day period in mid December brought the Nodaway River above flood stage. The crest reached 24.83 feet in the early afternoon hours of December 14th. This was 1.83 feet above flood stage. Flooding was confined to low agricultural areas along the river.