Nocturnal thunderstorms moved across the region north of a stalled frontal boundary that set up across the Nebraska and Kansas border. A severe thunderstorm watch was in effect. A flash flood watch was also in effect. The Omaha metro was especially hit hard with storms with quite a bit of wind damage, hail up to golf ball size, and hail that was several inches deep on roads which had to be removed with snow plows. State Farm insurance alone had reported 2000 claims from hail and wind damage.  Flash flooding occurred in both the Omaha and Lincoln metro areas. Several river flood warnings were also issued during the early morning hours for southeast Nebraska and southwest Iowa.

Thunderstorm Wind in SARPY, NEBRASKA
From 28-MAY-19 03:20:00 to 28-MAY-19 03:20:00 (CST-6)
Location: CHALCO
Magnitude: 65.00 EG
Reported by: Public

Substantial tree damage in the area. Roof damage to homes.

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:23:00 to 28-MAY-19 03:23:00 (CST-6)
Location: OMAHA MILLARD ARPT
Magnitude: 1.50 
Reported by: Public

Thunderstorm Wind in SARPY, NEBRASKA
From 28-MAY-19 03:23:00 to 28-MAY-19 03:23:00 (CST-6)
Location: CHALCO
Magnitude: 52.00 EG
Reported by: Public

One inch tree limbs blown down.

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:30:00 to 28-MAY-19 03:30:00 (CST-6)
Location: MILLARD
Magnitude: 1.75 
Reported by: Trained Spotter

Up to 10 minutes of golf ball size hail was reported near 120th and Center.

Hail in GAGE, NEBRASKA
From 27-MAY-19 23:48:00 to 27-MAY-19 23:48:00 (CST-6)
Location: PICKRELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in LANCASTER, NEBRASKA
From 28-MAY-19 14:30:00 to 28-MAY-19 15:30:00 (CST-6)
Location: LAKEVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads are still impacted in Lincoln with high water from this morning.

Hail in JOHNSON, NEBRASKA
From 28-MAY-19 00:25:00 to 28-MAY-19 00:25:00 (CST-6)
Location: STERLING
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:31:00 to 28-MAY-19 03:31:00 (CST-6)
Location: DUNDEE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:33:00 to 28-MAY-19 03:33:00 (CST-6)
Location: DUNDEE
Magnitude: 1.00 
Reported by: Public

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:34:00 to 28-MAY-19 03:34:00 (CST-6)
Location: ALBRIGHT
Magnitude: 1.00 
Reported by: Broadcast Media

Near 42nd and Interstate 80.

Thunderstorm Wind in SARPY, NEBRASKA
From 28-MAY-19 03:34:00 to 28-MAY-19 03:34:00 (CST-6)
Location: PAPILLION
Magnitude: 52.00 EG
Reported by: Public

One inch tree limbs blown down. Shingles blown off roof.

Thunderstorm Wind in SAUNDERS, NEBRASKA
From 28-MAY-19 02:55:00 to 28-MAY-19 02:55:00 (CST-6)
Location: CERESCO
Magnitude: 52.00 EG
Reported by: Public

Tree limbs blown down.

Thunderstorm Wind in CASS, NEBRASKA
From 28-MAY-19 03:00:00 to 28-MAY-19 03:00:00 (CST-6)
Location: GREENWOOD
Magnitude: 65.00 EG
Reported by: Public

Damage was reported to outbuildings.

Thunderstorm Wind in SAUNDERS, NEBRASKA
From 28-MAY-19 03:03:00 to 28-MAY-19 03:03:00 (CST-6)
Location: ASHLAND
Magnitude: 73.00 MG
Reported by: Trained Spotter

Measured by a personal weather station northeast of Ashland. Large cottonwood trees were downed and some roof damage was noted in the Sandy Point area.

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:15:00 to 28-MAY-19 03:15:00 (CST-6)
Location: ELKHORN
Magnitude: 1.00 
Reported by: NWS Employee

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:40:00 to 28-MAY-19 03:40:00 (CST-6)
Location: MILLARD
Magnitude: 1.00 
Reported by: Trained Spotter

Hail pea to quarter size, drifts up to 2 feet deep covering the roads. Snow plows had to be deployed to clear the streets.

Hail in DOUGLAS, NEBRASKA
From 28-MAY-19 03:44:00 to 28-MAY-19 03:44:00 (CST-6)
Location: OMAHA
Magnitude: 1.00 
Reported by: Public

Flash Flood in DOUGLAS, NEBRASKA
From 28-MAY-19 03:40:00 to 28-MAY-19 04:40:00 (CST-6)
Location: MILLARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Up to 2.5 inches of rain reported. Road closed. Nearby basements flooded.

Flash Flood in DOUGLAS, NEBRASKA
From 28-MAY-19 03:40:00 to 28-MAY-19 04:40:00 (CST-6)
Location: DUNDEE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Street flooding. Street is closed. Cars stranded. Water rescues needed.

Hail in SARPY, NEBRASKA
From 28-MAY-19 03:15:00 to 28-MAY-19 03:15:00 (CST-6)
Location: GRETNA
Magnitude: 1.25 
Reported by: Trained Spotter

Thunderstorm Wind in DOUGLAS, NEBRASKA
From 28-MAY-19 03:15:00 to 28-MAY-19 03:15:00 (CST-6)
Location: ELKHORN
Magnitude: 52.00 EG
Reported by: NWS Employee

Wind blown hail up to 1 inch in diameter.

Hail in SARPY, NEBRASKA
From 28-MAY-19 03:20:00 to 28-MAY-19 03:20:00 (CST-6)
Location: CHALCO
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in DOUGLAS, NEBRASKA
From 28-MAY-19 03:20:00 to 28-MAY-19 03:20:00 (CST-6)
Location: OMAHA MILLARD ARPT
Magnitude: 65.00 EG
Reported by: Public

Substantial wind damage to homes and large trees blown down. Garage door blown in, roof lifted off walls on garage.

Flash Flood in DOUGLAS, NEBRASKA
From 28-MAY-19 03:50:00 to 28-MAY-19 04:50:00 (CST-6)
Location: OMAHA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Saddle Creek and Dodge flooded. Cars stranded.

Flash Flood in DOUGLAS, NEBRASKA
From 28-MAY-19 04:00:00 to 28-MAY-19 05:00:00 (CST-6)
Location: BENNINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several videos posted to social media showing flowing water across several roads across the Omaha metro.

Flash Flood in LANCASTER, NEBRASKA
From 28-MAY-19 04:09:00 to 28-MAY-19 04:09:00 (CST-6)
Location: WEST LINCOLN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several intersections are flooded. At least one with water up to the headlights of vehicles.

Flood in SAUNDERS, NEBRASKA
From 28-MAY-19 09:34:00 to 28-MAY-19 10:34:00 (CST-6)
Location: WAHOO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Water reported over Highway 92 west of Wahoo.