A strong cold front pushed into a very warm unstable air mass as a significant upper level storm system tracked into the northern Great Lakes on June 29-30, 2014. A major severe weather and flash flood event unfolded across the area. This event resulted in the direct deaths of 2 people and direct injuries to 7 others. Three weak tornadoes, widespread damaging winds of 60 to 80 mph, and life-threatening flash flooding due to 4 to 6 inches of rainfall was reported. Two of the tornadoes were in northeast Iowa while another tornado was spotted in northwest Illinois. Law enforcement reported a business building destroyed by high winds from a severe thunderstorm in Fairfax, Iowa. One person was killed and another injured due to the collapsed structure. A severe thunderstorm packing 80 mph winds blew a tarp on top of several people trying to cover the infield at Veterans Memorial Stadium in Cedar Rapids, Iowa. Three people suffered concussions while another person had a dislocated shoulder. In North Liberty, Iowa a tree fell on a person who was then transported to a local hospital. Severe flash flooding in Cedar Rapids, Iowa resulted in the drowning death of a teenage boy with another boy injured. They were swept into a storm sewer and were found a mile away in a lake.

Flash Flood in SCOTT, IOWA
From 30-JUN-14 20:55:00 to 30-JUN-14 20:55:00 (CST-6)
Location: DAVENPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported flash flooding on East 35th Street west of Brady Stadium and east of Harrison Street.

Flash Flood in MUSCATINE, IOWA
From 30-JUN-14 21:05:00 to 30-JUN-14 21:05:00 (CST-6)
Location: ATALISSA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported the entire town of Atalissa was flooded with water 1 foot deep in places.  Highway 6 was closed west of town.

Flash Flood in DUBUQUE, IOWA
From 30-JUN-14 18:00:00 to 30-JUN-14 18:00:00 (CST-6)
Location: CENTER GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported the intersection of 22nd and Central was closed due to flooding.

Flash Flood in DUBUQUE, IOWA
From 29-JUN-14 21:44:00 to 29-JUN-14 21:44:00 (CST-6)
Location: DUBUQUE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported water 2 to 3 feet deep on 17th street and Kaufmann avenue.

Flash Flood in LINN, IOWA
From 30-JUN-14 01:45:00 to 30-JUN-14 01:45:00 (CST-6)
Location: CEDAR RAPIDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The fire department reported significant damage at Mercy Hospital in Cedar Rapids due to flash flooding.  Water was filling the first floor.

Flash Flood in LOUISA, IOWA
From 30-JUN-14 19:15:00 to 30-JUN-14 19:15:00 (CST-6)
Location: COLUMBUS JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported several streets closed due to water over the roads.

Flash Flood in LOUISA, IOWA
From 30-JUN-14 19:20:00 to 30-JUN-14 19:20:00 (CST-6)
Location: WAPELLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported several streets closed due to water over the roads.

Flash Flood in LOUISA, IOWA
From 30-JUN-14 19:20:00 to 30-JUN-14 19:20:00 (CST-6)
Location: GRANDVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported several streets closed due to water over the roads.

Flash Flood in WASHINGTON, IOWA
From 30-JUN-14 16:00:00 to 30-JUN-14 16:00:00 (CST-6)
Location: KALONA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported creeks out of their banks and Highway 22 was closed from 6th Street to Highway 1. Major flash flooding was reported in the Kalona area.

Flash Flood in JOHNSON, IOWA
From 30-JUN-14 14:45:00 to 30-JUN-14 14:45:00 (CST-6)
Location: IOWA CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported motorists rescued from vehicles stranded in flood waters.

Flash Flood in KEOKUK, IOWA
From 30-JUN-14 18:15:00 to 30-JUN-14 18:15:00 (CST-6)
Location: COAL CREEK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported 140th street at 110th avenue closed due to high water.

Flash Flood in CEDAR, IOWA
From 29-JUN-14 23:34:00 to 29-JUN-14 23:34:00 (CST-6)
Location: WEST BRANCH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported basements and roads flooded in West Branch with widespread flash flooding throughout Cedar County.

Flash Flood in IOWA, IOWA
From 30-JUN-14 16:45:00 to 30-JUN-14 16:45:00 (CST-6)
Location: PARNELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Many roads closed due to flash flooding and fields flooded.

Flash Flood in JONES, IOWA
From 30-JUN-14 00:00:00 to 30-JUN-14 00:00:00 (CST-6)
Location: LANGWORTHY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported the low lying town of Langworthy was evacuated.

Flash Flood in JACKSON, IOWA
From 30-JUN-14 00:58:00 to 30-JUN-14 00:58:00 (CST-6)
Location: MONMOUTH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported major stream flooding on Bears Creek due to 5.20 inches of rain.

Flash Flood in SCOTT, IOWA
From 30-JUN-14 19:00:00 to 30-JUN-14 19:00:00 (CST-6)
Location: SCOTT COUNTY PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Flash flooding reported with water knee deep in places.

Flash Flood in SCOTT, IOWA
From 30-JUN-14 15:57:00 to 30-JUN-14 15:57:00 (CST-6)
Location: DAVENPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur Radio reported urban flash flooding along Kimberly Road near Harbor Freight.

Flash Flood in JONES, IOWA
From 29-JUN-14 22:51:00 to 29-JUN-14 22:51:00 (CST-6)
Location: OLIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported flash flooding in Olin, Onslow and 3 miles north of Onslow. A report of 3.30 inches of rain in a short time was received 3 miles north of Scotch Grove.

Flash Flood in BENTON, IOWA
From 29-JUN-14 22:27:00 to 29-JUN-14 22:27:00 (CST-6)
Location: URBANA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported water flowing over Richland Avenue and nearby driveways.

Flash Flood in LINN, IOWA
From 29-JUN-14 22:55:00 to 29-JUN-14 22:55:00 (CST-6)
Location: CEDAR RAPIDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported widespread flash flooding along with basements flooded.

Flash Flood in WASHINGTON, IOWA
From 30-JUN-14 19:28:00 to 30-JUN-14 19:28:00 (CST-6)
Location: WELLMAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported Lower Deer Creek out of its banks and flowing over 540th Street.  Rainfall for the day was more than 5 inches.

Flash Flood in JOHNSON, IOWA
From 30-JUN-14 19:39:00 to 30-JUN-14 19:39:00 (CST-6)
Location: IOWA CITY MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported major flash flooding in the southeast portion of Iowa City with many roads closed.

Flash Flood in LINN, IOWA
From 29-JUN-14 22:55:00 to 29-JUN-14 22:55:00 (CST-6)
Location: MT VERNON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Total washout of Highway 1 north of Mount Vernon with a vehicle falling into the washed out road, but no injuries reported.

Flash Flood in LINN, IOWA
From 29-JUN-14 23:20:00 to 29-JUN-14 23:20:00 (CST-6)
Location: CEDAR RAPIDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported cars fully submerged and several fire trucks stranded in the water. Boat rescues were underway.

Flash Flood in CEDAR, IOWA
From 29-JUN-14 23:30:00 to 29-JUN-14 23:30:00 (CST-6)
Location: LOWDEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer reported street washouts in Lowden along with basements flooded.

Flash Flood in JONES, IOWA
From 30-JUN-14 00:00:00 to 30-JUN-14 00:00:00 (CST-6)
Location: MORLEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported the low lying town of Morley was evacuated.

Flash Flood in SCOTT, IOWA
From 30-JUN-14 19:39:00 to 30-JUN-14 19:39:00 (CST-6)
Location: DAVENPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported water up to a foot deep in downtown Davenport.

Flash Flood in LINN, IOWA
From 30-JUN-14 18:15:00 to 30-JUN-14 18:20:00 (CST-6)
Location: CEDAR RAPIDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

One teenager drowned and another was injured when they were swept into a large storm sewer during heavy rains. Three 17-year-olds were playing Frisbee near Arthur Elementary School when one of the boys was swept into the storm sewer and another boy went to try rescue him but was also swept in. The first boy drowned but the second boy came out of the sewer drain more than a mile away in Cedar Lake.