Thunderstorms developed north of a warm front across northeast Iowa during the afternoon of June 14th. Initially, these storms produced some wind damage and large hail before they became heavy rain producers that led to flash flooding. A semi truck was blown over by the winds southwest of Monona (Clayton County) and golf ball sized hail fell west of New Hampton (Chickasaw County). Flood waters covered State Highway 9 east of Osage (Mitchell County) and washed out roads between Marble Rock and Rudd (Floyd County).

Flash Flood in FLOYD, IOWA
From 14-JUN-16 18:33:00 to 14-JUN-16 19:15:00 (CST-6)
Location: FOLKERTS FLD ARPT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flash flooding from heavy rains washed out or caused water to go over several roads in the western sections of Floyd County.

Flood in HOWARD, IOWA
From 14-JUN-16 18:56:00 to 14-JUN-16 20:00:00 (CST-6)
Location: ELMA
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Some basements were flooded in Elma from heavy rains.

Flood in CHICKASAW, IOWA
From 14-JUN-16 19:05:00 to 14-JUN-16 21:00:00 (CST-6)
Location: DEERFIELD
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Some basements were flooded west of Alta Vista by runoff from heavy rains. Some minor street flooding also occurred.

Hail in CHICKASAW, IOWA
From 14-JUN-16 15:32:00 to 14-JUN-16 15:32:00 (CST-6)
Location: NEW HAMPTON MUNI ARP
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Golf ball sized hail fell along U.S. Highway 18 west of New Hampton.

Thunderstorm Wind in CLAYTON, IOWA
From 14-JUN-16 14:47:00 to 14-JUN-16 14:47:00 (CST-6)
Location: FROELICH
Magnitude: 35.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A semi truck was blown over south of Monona near the intersection of U.S. Highway 52 and State Highway 13.

Flash Flood in MITCHELL, IOWA
From 14-JUN-16 17:02:00 to 14-JUN-16 18:30:00 (CST-6)
Location: RICEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused Watsons Creek to go out of its banks and over Addison Ave. north of Riceville.

Flash Flood in MITCHELL, IOWA
From 14-JUN-16 17:59:00 to 14-JUN-16 19:15:00 (CST-6)
Location: NEW HAVEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused the Little Cedar River to go out of its banks and over State Highway 9 east of Osage.

Flood in FLOYD, IOWA
From 14-JUN-16 17:24:00 to 14-JUN-16 19:00:00 (CST-6)
Location: WALLER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy rain caused street flooding to occur in Charles City.

Flash Flood in HOWARD, IOWA
From 14-JUN-16 18:06:00 to 14-JUN-16 19:15:00 (CST-6)
Location: RICEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Heavy rain caused Cranes Creek to go out of its banks in several locations across western Howard County.

Flash Flood in HOWARD, IOWA
From 14-JUN-16 18:10:00 to 14-JUN-16 19:15:00 (CST-6)
Location: SARATOGA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Heavy rains caused Cranes Creek to go out of its banks and over State Highway 9 west of Davis Corners. Cars were reported to be driving into the flood waters.

Flash Flood in MITCHELL, IOWA
From 14-JUN-16 17:02:00 to 14-JUN-16 18:30:00 (CST-6)
Location: ORCHARD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused Slough Creek to go out of its banks and cover U.S. Highway 218 at the intersection with 330th Street southeast of Osage.

Flood in CLAYTON, IOWA
From 15-JUN-16 00:50:00 to 15-JUN-16 05:45:00 (CST-6)
Location: LITTLEPORT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rains across portions of northeast Iowa pushed the Volga River out of its banks in Littleport. The river crested at 12.71 feet, less than a foot above the flood stage.

Flood in CLAYTON, IOWA
From 14-JUN-16 22:20:00 to 15-JUN-16 05:00:00 (CST-6)
Location: ELKADER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rains across portions of northeast Iowa pushed the Turkey River out of its banks in Elkader. The river crested at 12.81 feet, less than a foot above the flood stage.

Flood in CLAYTON, IOWA
From 15-JUN-16 02:45:00 to 15-JUN-16 11:30:00 (CST-6)
Location: GARBER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rains across portions of northeast Iowa pushed the Turkey River out of its banks in Garber. The river crested at 18.62 feet, which was over a foot and a half above the flood stage.

Flash Flood in MITCHELL, IOWA
From 14-JUN-16 18:00:00 to 14-JUN-16 19:15:00 (CST-6)
Location: ORCHARD
Flood cause: Heavy Rain
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rains caused a branch of Spring Creek to go out of its banks north of Orchard. Between 15 and 20 calves were lost in the flooding.

Heavy Rain in HOWARD, IOWA
From 14-JUN-16 15:29:00 to 14-JUN-16 19:20:00 (CST-6)
Location: RICEVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

In Riceville, 5.54 inches of rain was reported.

Flash Flood in MITCHELL, IOWA
From 14-JUN-16 18:00:00 to 14-JUN-16 19:15:00 (CST-6)
Location: ORCHARD
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rains caused Spring Creek to go out of its banks and undercut railroad tracks near Orchard.

Flash Flood in MITCHELL, IOWA
From 14-JUN-16 17:02:00 to 14-JUN-16 18:30:00 (CST-6)
Location: BROWNVLLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain caused the Little Cedar River to go out of its banks and over State Highway 9 near 380th Street.

Heavy Rain in HOWARD, IOWA
From 14-JUN-16 15:30:00 to 14-JUN-16 18:30:00 (CST-6)
Location: ELMA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

In Elma, 4.45 inches of rain was reported.

Heavy Rain in HOWARD, IOWA
From 14-JUN-16 16:30:00 to 14-JUN-16 21:30:00 (CST-6)
Location: RICEVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet reporting station near Riceville measured 3.79 inches of rain.

Thunderstorm Wind in CHICKASAW, IOWA
From 14-JUN-16 15:35:00 to 14-JUN-16 15:35:00 (CST-6)
Location: IONIA
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree branches were blown down along U.S. Highway 18 west of New Hampton.