Thunderstorms developed by mid afternoon on Sept. 13 along and north of a warm front that had moved into east central Nebraska.  The air mass south of the boundary was moderately unstable with temperatures in the mid to upper 80s and dew point temperatures around 70.  Additional thunderstorms developed in this unstable air mass south of the front, several of which were supercells.  One supercell, the right-mover of a storm that split in Jefferson county produced a brief tornado southwest of Fairbury.  Meanwhile, another supercell produced a swath of wind damage as it tracked south-southeast from around Wahoo into the southeast corner of Nebraska.  Especially hard hit from that particular storm was the area from southeast Saunders county into Cass and Otoe counties where winds were estimated by an assessment team from the NWS at 60 to 80 mph.  Several semi-trucks were blown off of Interstate 80 in this area and almost 3,000 customers lost power due to significant damage to trees, power poles/lines, houses and other structures in that region.  The Nebraska Emergency Management Agency estimated that preliminary estimates of damage to public infrastructure totaled more than $2.7 million from the storms and 7 counties applied for federal disaster aid.

Hail in PLATTE, NEBRASKA
From 13-SEP-10 14:35:00 to 13-SEP-10 14:35:00 (CST-6)
Location: HUMPHREY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CASS, NEBRASKA
From 13-SEP-10 16:35:00 to 13-SEP-10 16:35:00 (CST-6)
Location: GREENWOOD
Magnitude: 75.00 EG
Reported by: Emergency Manager

Thunderstorm wind gusts estimated at 80 to 90 mph tore the roof off of a motel near the Greenwood exchange on Interstate 80 exposing 23 rooms.  The winds also blew several semi-trucks off of Interstate 80 in the region prompting a partial closure.  Tree and other damage was noted in the area.

Hail in SALINE, NEBRASKA
From 13-SEP-10 14:39:00 to 13-SEP-10 14:39:00 (CST-6)
Location: WILBER
Magnitude: 1.75 
Reported by: Emergency Manager

Golf ball-size hail was reported in the Wilber area.

Hail in JEFFERSON, NEBRASKA
From 13-SEP-10 14:48:00 to 13-SEP-10 14:48:00 (CST-6)
Location: POWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CASS, NEBRASKA
From 13-SEP-10 16:45:00 to 13-SEP-10 16:45:00 (CST-6)
Location: MURDOCK
Magnitude: 65.00 EG
Reported by: Emergency Manager

Thunderstorm wind gusts estimated at over 70 mph blew a tree onto a car causing significant damage, and also downed many large limbs and uprooted a few trees in the Murdock area.  The winds also snapped power poles in the region and blew a truck off of Highway 1.  School was canceled the next day due to loss of power.

Thunderstorm Wind in OTOE, NEBRASKA
From 13-SEP-10 17:16:00 to 13-SEP-10 17:16:00 (CST-6)
Location: OTOE
Magnitude: 70.00 EG
Reported by: Emergency Manager

Emergency management estimated thunderstorm wind gusts approached 80 mph near Otoe.  The winds toppled many trees in the area, especially north and west of town where 5 county roads were closed.  The wind was accompanied by hail up to 1 inch in diameter.

Hail in GAGE, NEBRASKA
From 13-SEP-10 18:25:00 to 13-SEP-10 18:25:00 (CST-6)
Location: KRIDER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JEFFERSON, NEBRASKA
From 13-SEP-10 16:00:00 to 13-SEP-10 16:00:00 (CST-6)
Location: THOMPSON
Magnitude: 1.00 
Reported by: Public

Hail up to 1 inch in diameter covered the ground up to a depth of 8 inches south of Fairbury.

Hail in STANTON, NEBRASKA
From 13-SEP-10 15:08:00 to 13-SEP-10 15:08:00 (CST-6)
Location: PILGER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in JEFFERSON, NEBRASKA
From 13-SEP-10 14:42:00 to 13-SEP-10 14:42:00 (CST-6)
Location: FAIRBURY
Magnitude: 0.88 
Reported by: Emergency Manager

Hail up to nickel-size was accompanied by thunderstorm winds which were estimated at around 65 mph.

Thunderstorm Wind in OTOE, NEBRASKA
From 13-SEP-10 17:20:00 to 13-SEP-10 17:20:00 (CST-6)
Location: NEBRASKA CITY ARPT
Magnitude: 55.00 EG
Reported by: Emergency Manager

Thunderstorm wind gusts estimated at over 60 mph destroyed a machine shed on the western outskirts of Nebraska City driving some of the boards through a window of a house and also into the roof.

Thunderstorm Wind in JOHNSON, NEBRASKA
From 13-SEP-10 17:35:00 to 13-SEP-10 17:35:00 (CST-6)
Location: ELK CREEK
Magnitude: 60.00 EG
Reported by: Newspaper

Thunderstorm wind gusts estimated at around 70 mph downed a lot of large tree limbs in the Elk Creek area and the fallen limbs caused some shingle and other damage.  At least one window was blown out of a local business.

Hail in OTOE, NEBRASKA
From 13-SEP-10 17:16:00 to 13-SEP-10 17:16:00 (CST-6)
Location: OTOE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The hail was accompanied by thunderstorm wind gusts estimated at 70 to 80 mph.

Hail in SAUNDERS, NEBRASKA
From 13-SEP-10 15:55:00 to 13-SEP-10 16:22:00 (CST-6)
Location: ITHACA
Magnitude: 2.50 
Reported by: NWS Storm Survey

Hail up to baseball-size caused significant house and vehicle damage in the Ithaca area.  The hail was accompanied by winds that gusted to at least 50 mph.  By some accounts the hail lasted up to 45 minutes.  Almost every house in town had siding damage and/or windows broken out, mainly on the north side of the house.  Vehicles also sustained damage as did trees and other structures.  Some crops east of town were shredded to the ground.

Hail in SAUNDERS, NEBRASKA
From 13-SEP-10 15:45:00 to 13-SEP-10 15:57:00 (CST-6)
Location: WAHOO
Magnitude: 2.00 
Reported by: Law Enforcement

Hail up to 2 inches in diameter was reported from around 5 miles north of Wahoo into Wahoo.  The hail was accompanied by thunderstorm winds at least 50 mph which downed some small tree limbs in Wahoo.

Thunderstorm Wind in RICHARDSON, NEBRASKA
From 13-SEP-10 18:15:00 to 13-SEP-10 18:15:00 (CST-6)
Location: SHUBERT
Magnitude: 55.00 EG
Reported by: COOP Observer

Thunderstorm winds were estimated to gust over 60 mph downing at least one large tree limb in the area.  Very heavy rain accompanied the storm with almost 3 inches reported.

Thunderstorm Wind in RICHARDSON, NEBRASKA
From 13-SEP-10 18:05:00 to 13-SEP-10 18:05:00 (CST-6)
Location: STELLA
Magnitude: 55.00 EG
Reported by: Trained Spotter

Thunderstorm wind gusts estimated at over 60 mph downed many very large tree limbs blocking east-west travel on Highway 62 in Stella.  The winds also ripped shingles off of some roofs and was accompanied by small hail.  Grain bins and corn and bean fields suffered damage north of town.

Thunderstorm Wind in CASS, NEBRASKA
From 13-SEP-10 16:50:00 to 13-SEP-10 16:50:00 (CST-6)
Location: ELMWOOD
Magnitude: 65.00 EG
Reported by: Public

Thunderstorm wind gusts estimated at over 70 mph blew a tree onto a home and also blew the window out of a house in the Elmwood area.  The winds ripped the roof off of a funeral home and caused significant tree and power pole damage in the area.  A three-mile portion of a recreation trail near town was closed for several days because of fallen trees and limbs and a bridge railing was damaged by the storm.

Hail in JEFFERSON, NEBRASKA
From 13-SEP-10 16:40:00 to 13-SEP-10 16:43:00 (CST-6)
Location: HEDRIX
Magnitude: 1.25 
Reported by: Fire Department/Rescue

Hail up to half dollar-size was reported from around 4 miles west of Fairbury into Fairbury.

Thunderstorm Wind in CASS, NEBRASKA
From 13-SEP-10 16:50:00 to 13-SEP-10 17:00:00 (CST-6)
Location: ELMWOOD
Magnitude: 70.00 EG
Reported by: Public

Thunderstorm wind gusts estimated at around 80 mph downed around 100 structures that supported high voltage transmission lines between Elmwood and Weeping Water.  Significant tree damage was also noted over the area.  The downed power lines caused several thousand people to lose power in the region.

Thunderstorm Wind in LANCASTER, NEBRASKA
From 13-SEP-10 16:38:00 to 13-SEP-10 17:00:00 (CST-6)
Location: (LNK)LINCOLN ARPT
Magnitude: 50.00 MG
Reported by: ASOS

Thunderstorm wind gusts were measured at 58 mph by the Asos at the Lincoln airport, although winds could have gusted higher across the city.  The wind gust measured by Asos occurred at 538pm CDT.  The winds downed numerous trees and large branches which caused some vehicle and home damage and also knocked out power to 10,000 LES customers.  Most of the damage was noted across the northern sections of the town where 9 out of 12 areas of damage occurred according to LES.  In addition, 2 people sustained minor injuries when the car they were driving collided with a fallen tree near 30th and Dudley Streets.  The damage extended south to at least 5 miles south of town where a fence was blown down and a lot of 2 inch in diameter tree limbs were downed.

Hail in OTOE, NEBRASKA
From 13-SEP-10 17:18:00 to 13-SEP-10 17:18:00 (CST-6)
Location: DUNBAR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in NEMAHA, NEBRASKA
From 13-SEP-10 17:50:00 to 13-SEP-10 17:50:00 (CST-6)
Location: AUBURN
Magnitude: 66.00 EG
Reported by: Emergency Manager

Thunderstorm winds destroyed a 50 X 70 ft machine shed with the debris blown about a 1/4 mile.  Corn and soybeans were flattened in the area with winds estimated at 70 to 80 mph.

Thunderstorm Wind in NEMAHA, NEBRASKA
From 13-SEP-10 17:50:00 to 13-SEP-10 17:50:00 (CST-6)
Location: AUBURN
Magnitude: 61.00 EG
Reported by: Emergency Manager

Thunderstorm wind gusts estimated at around 70 mph downed large limbs and some trees in the Auburn area.

Hail in JEFFERSON, NEBRASKA
From 13-SEP-10 17:15:00 to 13-SEP-10 17:15:00 (CST-6)
Location: STEELE CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in JEFFERSON, NEBRASKA
From 13-SEP-10 14:42:00 to 13-SEP-10 14:42:00 (CST-6)
Location: HEDRIX
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management estimated that thunderstorm winds gusted to 65 mph a little west of the Fairbury area.  The winds were accompanied by dime to nickel-size hail.

Thunderstorm Wind in RICHARDSON, NEBRASKA
From 13-SEP-10 18:35:00 to 13-SEP-10 18:43:00 (CST-6)
Location: (FNB)BRENER FLD FALL
Magnitude: 50.00 MG
Reported by: Emergency Manager

Thunderstorm wind gusts were measured at 58 mph by Asos at the Falls City airport at 743pm CDT.  Winds were estimated at close to 65 mph in town which downed numerous tree limbs.   Pea-size hail and over 3 inches of rain in an hour was also reported.  The storm total in the Fall City area this evening was over 3 inches.

Tornado in JEFFERSON, NEBRASKA
From 13-SEP-10 15:04:00 to 13-SEP-10 15:05:00 (CST-6)
Location: THOMPSON
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A small, brief tornado was observed by emergency management about 1 mile south of Thompson or about 5 miles or so southwest of Fairbury.  The width of the damage path was about 50 yards and the length was about 1/4 mile.  Damage was mainly to crops.

Thunderstorm Wind in NEMAHA, NEBRASKA
From 13-SEP-10 17:45:00 to 13-SEP-10 17:45:00 (CST-6)
Location: JOHNSON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts estimated at close to 70 mph downed large tree limbs in the area and caused some power poles to lean.

Hail in OTOE, NEBRASKA
From 13-SEP-10 17:19:00 to 13-SEP-10 17:19:00 (CST-6)
Location: SYRACUSE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Reported near the intersection of Highways 50 and 2.

Thunderstorm Wind in SAUNDERS, NEBRASKA
From 13-SEP-10 16:00:00 to 13-SEP-10 16:25:00 (CST-6)
Location: MEAD
Magnitude: 65.00 EG
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds and hail up to 2 inches in diameter caused substantial damage to the University of Nebraska agricultural research center.  Winds were estimated to have gusted between 70 and 80 mph.  Damage estimates to the center included $800,000 in crop damage, $500,000 in building damage and $250,000 in vehicle damage.  Thirty-seven buildings had broken windows, siding and/or roof damage.  Several horses were injured and had to be euthanized when the open-front portable building they were in was toppled.

Thunderstorm Wind in OTOE, NEBRASKA
From 13-SEP-10 17:15:00 to 13-SEP-10 17:20:00 (CST-6)
Location: SYRACUSE
Magnitude: 65.00 EG
Reported by: Trained Spotter

Thunderstorm wind gusts estimated at over 70 mph uprooted about a dozen trees and caused other widespread tree damage in the Syracuse area.  Some of the downed trees damaged homes and businesses in the region and also downed power lines.  Some outbuildings were also destroyed.

Hail in NEMAHA, NEBRASKA
From 13-SEP-10 17:43:00 to 13-SEP-10 17:43:00 (CST-6)
Location: AUBURN
Magnitude: 1.75 
Reported by: Trained Spotter

Accompanied by thunderstorm winds which gusted to at least 50 mph.

Hail in SAUNDERS, NEBRASKA
From 13-SEP-10 16:00:00 to 13-SEP-10 16:25:00 (CST-6)
Location: MEAD
Magnitude: 2.00 
Property damage: 250.00K
Crop damage: 800.00K
Reported by: Newspaper

Thunderstorm winds and hail up to 2 inches in diameter caused substantial damage to the University of Nebraska agricultural research center.  Winds were estimated to have gusted between 70 and 80 mph.  Damage estimates to the center included $800,000 in crop damage, $500,000 in building damage and $250,000 in vehicle damage.  Thirty-seven buildings had broken windows, siding and/or roof damage and several horses were injured and had to be euthanized when the open-front portable building they were in was toppled.

Thunderstorm Wind in SAUNDERS, NEBRASKA
From 13-SEP-10 16:25:00 to 13-SEP-10 16:30:00 (CST-6)
Location: ASHLAND
Magnitude: 66.00 MS
Reported by: Trained Spotter

A spotter with an anemometer measured a thunderstorm wind gust of 76 mph a little west of Ashland.  The winds caused major damage to at least one roof in or near Ashland with numerous large tree limbs and a few trees downed from southwest of town into town.  The fallen trees damaged several houses and vehicles in the area.

Thunderstorm Wind in CASS, NEBRASKA
From 13-SEP-10 16:59:00 to 13-SEP-10 16:59:00 (CST-6)
Location: WEEPING WATER
Magnitude: 65.00 EG
Reported by: Broadcast Media

Thunderstorm winds that were estimated at over 70 mph snapped power poles and caused significant tree damage in the Weeping Water area.  The fallen trees/limbs caused some structural and vehicle damage in the area.

Hail in RICHARDSON, NEBRASKA
From 13-SEP-10 18:35:00 to 13-SEP-10 18:35:00 (CST-6)
Location: (FNB)BRENER FLD FALL
Magnitude: 1.75 
Reported by: Newspaper

Golf ball-size hail was reported north of Falls City along with 3.5 inches of rain.  The hail caused some crop damage in the area.

Thunderstorm Wind in OTOE, NEBRASKA
From 13-SEP-10 17:12:00 to 13-SEP-10 17:12:00 (CST-6)
Location: UNADILLA
Magnitude: 60.00 EG
Reported by: Emergency Manager

Thunderstorm wind gusts estimated at close to 70 mph downed numerous trees and power lines in the Unadilla area.  A few outbuildings in the area were also destroyed.

Thunderstorm Wind in OTOE, NEBRASKA
From 13-SEP-10 17:17:00 to 13-SEP-10 17:17:00 (CST-6)
Location: DUNBAR
Magnitude: 65.00 EG
Reported by: Emergency Manager

Thunderstorm winds estimated at over 70 blew a tractor trailer off of the road near the Highway 2 and County Road 67 interchange and also overturned a fifth-wheel trailer.  Trees were damaged and a few were uprooted which caused some house damage in the area.

Heavy Rain in RICHARDSON, NEBRASKA
From 13-SEP-10 18:30:00 to 13-SEP-10 19:30:00 (CST-6)
Location: (FNB)BRENER FLD FALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Rainfall of 3.5 to 5 inches was reported in the Falls City area, 3 inches of which fell in 1 hour at the airport.  The heavy rain briefly flooded some county roads in the Straussville area northwest of town.

Thunderstorm Wind in JOHNSON, NEBRASKA
From 13-SEP-10 17:30:00 to 13-SEP-10 17:30:00 (CST-6)
Location: TECUMSEH
Magnitude: 60.00 EG
Reported by: Newspaper

Thunderstorm wind gusts estimated at around 70 mph destroyed a 60 by 150 foot machine shed and tipped over a large tractor east of Tecumseh.  The winds caused tree damage throughout the Tecumseh area and fallen tree limbs knocked the power out to 200 customers.

Hail in JEFFERSON, NEBRASKA
From 13-SEP-10 14:15:00 to 13-SEP-10 14:15:00 (CST-6)
Location: POWELL
Magnitude: 1.25 
Reported by: Trained Spotter

The ground was covered white with hail up to half dollar-size.