Theta-e advection and a stationery front helped initiate storms across eastern Nebraska. The largest hail reports were for 2.5 inch hail and peak wind gusts were near 70 mph. Additionally, flash flooding was reported in Cedar County due to heavy precipitation.

Thunderstorm Wind in LANCASTER, NEBRASKA
From 31-AUG-21 05:23:00 to 31-AUG-21 05:23:00 (CST-6)
Location: WOODLAWN
Magnitude: 52.00 MG
Reported by: ASOS

Lincoln Airport ASOS measured a peak wind gust of 60 mph.

Thunderstorm Wind in WASHINGTON, NEBRASKA
From 30-AUG-21 23:30:00 to 30-AUG-21 23:30:00 (CST-6)
Location: BLAIR
Magnitude: 52.00 EG
Reported by: Storm Chaser

Storm chaser estimated peak wind gusts at 60 mph and reported a power outage.

Hail in PIERCE, NEBRASKA
From 30-AUG-21 23:40:00 to 30-AUG-21 23:40:00 (CST-6)
Location: HADAR
Magnitude: 1.00 
Reported by: Trained Spotter

Trained spotter reported quarter size hail in Hadar.

Hail in DODGE, NEBRASKA
From 30-AUG-21 23:43:00 to 30-AUG-21 23:43:00 (CST-6)
Location: SNYDER
Magnitude: 1.00 
Reported by: Public

Public report from mping of 1-inch hail.

Thunderstorm Wind in DODGE, NEBRASKA
From 31-AUG-21 00:07:00 to 31-AUG-21 00:07:00 (CST-6)
Location: FREMONT
Magnitude: 61.00 EG
Reported by: Trained Spotter

Trained spotter estimated peak wind gusts between 70 to 80 mph.

Thunderstorm Wind in DOUGLAS, NEBRASKA
From 31-AUG-21 00:35:00 to 31-AUG-21 00:35:00 (CST-6)
Location: VALLEY
Magnitude: 50.00 MG
Reported by: NWS Storm Survey

Peak wind gust of 58 mph was measured at NWS Omaha.

Flood in PIERCE, NEBRASKA
From 31-AUG-21 08:30:00 to 31-AUG-21 08:30:00 (CST-6)
Location: PLAINVIEW MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous roads with water over the roadway from 2 miles northeast of Plainview to the Knox/Pierce county border.

Thunderstorm Wind in DOUGLAS, NEBRASKA
From 31-AUG-21 00:45:00 to 31-AUG-21 00:45:00 (CST-6)
Location: ELKHORN
Magnitude: 52.00 EG
Reported by: NWS Employee

NWS Employee reported an estimated peak wind gust of 60 mph.

Thunderstorm Wind in CASS, NEBRASKA
From 31-AUG-21 01:10:00 to 31-AUG-21 01:10:00 (CST-6)
Location: LOUISVILLE
Magnitude: 52.00 EG
Reported by: Emergency Manager

Emergency manager relayed report of peak wind gust near 60 mph in Louisville.

Thunderstorm Wind in LANCASTER, NEBRASKA
From 31-AUG-21 05:30:00 to 31-AUG-21 05:30:00 (CST-6)
Location: CHENEYS
Magnitude: 52.00 EG
Reported by: Trained Spotter

Trained spotter reported tree damage due to storm gusts.

Thunderstorm Wind in JEFFERSON, NEBRASKA
From 31-AUG-21 06:11:00 to 31-AUG-21 06:11:00 (CST-6)
Location: PLYMOUTH
Magnitude: 56.00 EG
Reported by: Public

Public reported an estimated peak wind gust of 65 mph.

Thunderstorm Wind in OTOE, NEBRASKA
From 31-AUG-21 06:15:00 to 31-AUG-21 06:15:00 (CST-6)
Location: PAUL
Magnitude: 52.00 MG
Reported by: AWOS

Nebraska City AWOS measured a peak wind gust of 60 mph.

Thunderstorm Wind in RICHARDSON, NEBRASKA
From 31-AUG-21 06:52:00 to 31-AUG-21 06:52:00 (CST-6)
Location: (FNB)BRENER FLD FALL
Magnitude: 50.00 MG
Reported by: ASOS

Falls City ASOS measured a peak wind gust of 58 mph.

Flash Flood in DOUGLAS, NEBRASKA
From 31-AUG-21 04:00:00 to 31-AUG-21 04:00:00 (CST-6)
Location: WATERLOO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported lots of street flooding with water level up to bumper of cars.

Hail in PIERCE, NEBRASKA
From 30-AUG-21 21:50:00 to 30-AUG-21 21:50:00 (CST-6)
Location: OSMOND
Magnitude: 1.00 
Reported by: Public

Public reported quarter sized hail falling in Osmond.

Hail in PIERCE, NEBRASKA
From 30-AUG-21 21:55:00 to 30-AUG-21 21:55:00 (CST-6)
Location: PIERCE
Magnitude: 1.50 
Reported by: Social Media

Public reported vis social media 1.5-inch hail in Pierce.

Hail in WAYNE, NEBRASKA
From 30-AUG-21 21:37:00 to 30-AUG-21 21:37:00 (CST-6)
Location: CARROLL
Magnitude: 1.00 
Reported by: Trained Spotter

Trained spotter reported 1-inch hail.

Hail in WAYNE, NEBRASKA
From 30-AUG-21 22:03:00 to 30-AUG-21 22:03:00 (CST-6)
Location: WINSIDE
Magnitude: 1.00 
Reported by: Broadcast Media

Broadcast media relayed report of quarter sized hail.

Hail in CEDAR, NEBRASKA
From 30-AUG-21 22:11:00 to 30-AUG-21 22:11:00 (CST-6)
Location: BOW VLY
Magnitude: 2.50 
Reported by: Social Media

Public reported via social media tennis ball sized hail.

Hail in PIERCE, NEBRASKA
From 30-AUG-21 21:58:00 to 30-AUG-21 21:58:00 (CST-6)
Location: OSMOND
Magnitude: 1.25 
Reported by: Public

Public report from mping of 1.25-inch hail.

Hail in STANTON, NEBRASKA
From 30-AUG-21 23:05:00 to 30-AUG-21 23:05:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Reported by: Public

Public reported 1.75-inch hail.

Hail in STANTON, NEBRASKA
From 30-AUG-21 22:45:00 to 30-AUG-21 22:45:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Reported by: Emergency Manager

Emergency manager reported golf ball sized hail.

Hail in KNOX, NEBRASKA
From 30-AUG-21 22:50:00 to 30-AUG-21 22:50:00 (CST-6)
Location: VERDIGRE
Magnitude: 2.50 
Reported by: Social Media

Public reported tennis ball sized hail.

Hail in CEDAR, NEBRASKA
From 30-AUG-21 22:15:00 to 30-AUG-21 22:15:00 (CST-6)
Location: BOW VLY
Magnitude: 1.75 
Reported by: Broadcast Media

Broadcast media relayed reported of 1.75-inch hail.

Hail in STANTON, NEBRASKA
From 30-AUG-21 22:40:00 to 30-AUG-21 22:40:00 (CST-6)
Location: STANTON
Magnitude: 2.50 
Reported by: Social Media

Public reported 2.5-inch hail.

Hail in STANTON, NEBRASKA
From 30-AUG-21 22:42:00 to 30-AUG-21 22:42:00 (CST-6)
Location: PILGER
Magnitude: 1.00 
Reported by: Emergency Manager

Emergency manager reported 1-inch hail.

Hail in KNOX, NEBRASKA
From 30-AUG-21 22:45:00 to 30-AUG-21 22:45:00 (CST-6)
Location: VERDIGRE
Magnitude: 1.75 
Reported by: Trained Spotter

Trained spotter reported golf ball sized hail in Verdigre.

Thunderstorm Wind in STANTON, NEBRASKA
From 30-AUG-21 23:17:00 to 30-AUG-21 23:17:00 (CST-6)
Location: STANTON
Magnitude: 61.00 EG
Reported by: Emergency Manager

Emergency manager reported 8-foot diameter tree blown down which took down a utility pool and power line.

Flash Flood in KNOX, NEBRASKA
From 31-AUG-21 02:25:00 to 31-AUG-21 02:25:00 (CST-6)
Location: CREIGHTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Road leading north out of town was inundated with water prompting a barricade to be deployed.