The seasons first severe thunderstorms developed during the evening hours of April 9th. These storms were north of a warm front that was draped across central Iowa. The storms produced up to golf ball sized hail in Meyer (Mitchell County) and wind gusts that approached 70 mph near Cresco (Howard County).

Hail in MITCHELL, IOWA
From 09-APR-13 18:45:00 to 09-APR-13 18:45:00 (CST-6)
Location: MC INTIRE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong ball sized hail fell in McIntire.

Thunderstorm Wind in HOWARD, IOWA
From 09-APR-13 20:12:00 to 09-APR-13 20:12:00 (CST-6)
Location: CRESCO MUNI ARPT
Magnitude: 59.00 MG
Property damage: 7.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts approaching 70 mph in Cresco blew a roof off a garage, damaged a sign, knocked down some trees and blew over a pickup and semi that were both pulling empty cattle trailers.

Hail in MITCHELL, IOWA
From 09-APR-13 18:36:00 to 09-APR-13 18:36:00 (CST-6)
Location: STACYVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail fell in Stacyville.

Hail in MITCHELL, IOWA
From 09-APR-13 18:20:00 to 09-APR-13 18:20:00 (CST-6)
Location: ST ANSGAR ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MITCHELL, IOWA
From 09-APR-13 19:30:00 to 09-APR-13 19:30:00 (CST-6)
Location: OSAGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in ALLAMAKEE, IOWA
From 09-APR-13 04:15:00 to 10-APR-13 03:00:00 (CST-6)
Location: CHESTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The mesonet weather observing site near Dorchester reported 2.67 inches of rain.

Heavy Rain in MITCHELL, IOWA
From 09-APR-13 02:45:00 to 10-APR-13 05:30:00 (CST-6)
Location: ST ANSGAR
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer in St. Ansgar reported 2.9 inches of rain.

Heavy Rain in MITCHELL, IOWA
From 09-APR-13 02:45:00 to 10-APR-13 06:00:00 (CST-6)
Location: OSAGE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer near Osage reported 2.52 inches of rain.

Heavy Rain in FLOYD, IOWA
From 09-APR-13 02:45:00 to 10-APR-13 06:00:00 (CST-6)
Location: CHARLES CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer in Charles City reported 2.2 inches of rain.

Heavy Rain in FAYETTE, IOWA
From 09-APR-13 03:30:00 to 10-APR-13 06:00:00 (CST-6)
Location: FAYETTE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer near Fayette reported 2.04 inches of rain.

Heavy Rain in CHICKASAW, IOWA
From 09-APR-13 03:30:00 to 10-APR-13 06:00:00 (CST-6)
Location: NEW HAMPTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer near New Hampton reported 2.03 inches of rain.

Heavy Rain in MITCHELL, IOWA
From 09-APR-13 02:45:00 to 10-APR-13 06:55:00 (CST-6)
Location: RICEVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A rainfall amount of 3.3 inches was reported near Riceville.

Heavy Rain in HOWARD, IOWA
From 09-APR-13 03:30:00 to 10-APR-13 06:00:00 (CST-6)
Location: ELMA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer near Elma reported 2.2 inches of rain.

Flood in ALLAMAKEE, IOWA
From 10-APR-13 16:00:00 to 15-APR-13 21:15:00 (CST-6)
Location: CHESTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

After several rounds of rain, the Upper Iowa River near Dorchester went above flood stage two times between April 10th and April 15th. The first round of flooding occurred on the 10th and 11th with a crest of 14.58 feet on the 11th. The second round of flooding occurred on the 15th with a crest of 14.5 feet. Flood stage at Dorchester is 14 feet.

Hail in MITCHELL, IOWA
From 09-APR-13 18:23:00 to 09-APR-13 18:30:00 (CST-6)
Location: ST ANSGAR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Dime to nickel sized hail fell for almost 10 minutes in St. Ansgar and completely covered the ground.

Hail in MITCHELL, IOWA
From 09-APR-13 18:36:00 to 09-APR-13 18:36:00 (CST-6)
Location: MEYER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball sized hail fell in Meyer.

Heavy Rain in FAYETTE, IOWA
From 09-APR-13 03:30:00 to 10-APR-13 04:17:00 (CST-6)
Location: OELWEIN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Almost 2.25 inches of rain fell just west of Oelwein.

Heavy Rain in CHICKASAW, IOWA
From 09-APR-13 03:30:00 to 10-APR-13 06:00:00 (CST-6)
Location: NEW HAMPTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Rainfall of 2.23 inches was reported near New Hampton.