A small tornado developed east of Garnavillo (Clayton County) and traveled east/northeast to the Mississippi River before crossing over into Wisconsin. This tornado was part of a larger severe weather outbreak that occurred across much of northeast Iowa during the afternoon of May 29th. These storms developed in a warm and moist airmass behind a warm front that was moving north across the Upper Midwest. In addition to the tornado, a farm east of Oelwein (Fayette County) was hit hard by straight line winds and flash flooding occurred in Protivin (Howard County).

Flash Flood in FAYETTE, IOWA
From 29-MAY-13 18:15:00 to 29-MAY-13 22:00:00 (CST-6)
Location: ARLINGTON
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rains caused several small streams that feed the Maquoketa River to go out of their banks south of Arlington. At least three roads were closed due to washouts or water over the road.

Tornado in CLAYTON, IOWA
From 29-MAY-13 16:46:00 to 29-MAY-13 16:51:00 (CST-6)
Location: GARNAVILLO
Tornado F-scale: EF0
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A pole barn was damaged and numerous trees were knocked down from east of Garnavillo to the Wisconsin state line in the Mississippi River east of Clayton.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-MAY-13 13:12:00 to 29-MAY-13 13:12:00 (CST-6)
Location: NASHUA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 60 mph wind gust was reported in Nashua.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-MAY-13 13:27:00 to 29-MAY-13 13:27:00 (CST-6)
Location: IONIA
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The automated mesonet observing equipment near Ionia measured a wind gust of 62 mph.

Flash Flood in HOWARD, IOWA
From 29-MAY-13 15:49:00 to 29-MAY-13 22:00:00 (CST-6)
Location: PROTIVIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sandbagging occurred in Protivin after heavy rain pushed Bohemian Creek out of its banks.

Thunderstorm Wind in CHICKASAW, IOWA
From 29-MAY-13 13:40:00 to 29-MAY-13 13:40:00 (CST-6)
Location: NEW HAMPTON
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wind gust of 63 mph occurred in New Hampton.

Hail in CLAYTON, IOWA
From 29-MAY-13 16:50:00 to 29-MAY-13 16:50:00 (CST-6)
Location: EDGEWOOD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash Flood in CLAYTON, IOWA
From 29-MAY-13 17:46:00 to 30-MAY-13 01:15:00 (CST-6)
Location: STRAWBERRY PT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain overwhelmed small streams east of Edgewood causing water to go over State Highway 3. Numerous other streams over the southern half of the county also went out of their banks causing water to flow over roads. The COOP observer in Edgewood reported 4.1 inches of rain.

Flood in FAYETTE, IOWA
From 29-MAY-13 19:53:00 to 30-MAY-13 00:00:00 (CST-6)
Location: MAYNARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous fields were underwater north of Oelwein from heavy rain.

Flash Flood in FLOYD, IOWA
From 29-MAY-13 23:26:00 to 30-MAY-13 04:00:00 (CST-6)
Location: CHARLES CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous streets were under water in Charles City from excessive rain. The storm sewers were not able to keep up with the rain as it fell.

Heavy Rain in CLAYTON, IOWA
From 29-MAY-13 16:15:00 to 29-MAY-13 20:41:00 (CST-6)
Location: EDGEWOOD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

In Edgewood, 4.5 inches of rain fell.

Heavy Rain in FAYETTE, IOWA
From 29-MAY-13 15:40:00 to 29-MAY-13 20:23:00 (CST-6)
Location: FAIRBANK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

In Fairbank, 3.2 inches of rain fell.

Flood in ALLAMAKEE, IOWA
From 30-MAY-13 02:00:00 to 30-MAY-13 11:40:00 (CST-6)
Location: CHESTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from heavy rain pushed the Upper Iowa River out of its banks near Dorchester. The river crested almost a foot above the flood stage at 14.99 feet.

Flood in CLAYTON, IOWA
From 30-MAY-13 02:30:00 to 31-MAY-13 19:15:00 (CST-6)
Location: ELKADER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from heavy rain pushed the Turkery River out of its banks in Elkader. The river crested almost four feet above the flood stage at 15.86 feet.

Flash Flood in CHICKASAW, IOWA
From 29-MAY-13 15:25:00 to 30-MAY-13 00:00:00 (CST-6)
Location: SAUDE
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain produced street flooding and caused water to go into several basements in Lawler. Widespread flooding also occurred over the eastern sections of the county and numerous streets were flooded in New Hampton.

Flood in CLAYTON, IOWA
From 29-MAY-13 20:30:00 to 31-MAY-13 23:15:00 (CST-6)
Location: GARBER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Runoff from heavy rain pushed the Turkey River out of its banks in Garber. The river crested almost five and a half feet above the flood stage at 22.47 feet.

Thunderstorm Wind in FAYETTE, IOWA
From 29-MAY-13 16:05:00 to 29-MAY-13 16:05:00 (CST-6)
Location: OELWEIN
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A farm shed was blown down, a grain bin was twisted and torn, windows were broken and machines were damaged on a farm east of Oelwein.

Flash Flood in WINNESHIEK, IOWA
From 29-MAY-13 16:25:00 to 29-MAY-13 23:30:00 (CST-6)
Location: FT ATKINSON
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused Goddard Creek to go out of its banks with water covering part of State Highway 24 just outside of Fort Atkinson. In and around Calmar, water was over several county roads and State Highway 24. Street flooding in Calmar also occurred along with water getting into the basements of some houses. Widespread street flooding from heavy rain occurred in Decorah. In about an hour and 45 minutes, 3.5 inches of rain fell in Fort Atkinson, the COOP observer in Calmar received 3.43 inches and the public reported 3.5 inches of rain in Decorah.