Following a week of record highs, a late winter severe weather outbreak brought widespread severe thunderstorms to Iowa, Illinois, and northeast Missouri. Supercell thunderstorms produced numerous reports of large hail and a few tornadoes. The tornadoes were the first ever recorded in the month of February, across eastern Iowa and northwest Illinois. Additionally, some damaging winds occurred after dark, when the storms formed into a line as they moved through Illinois. This outbreak of severe weather also included many locations in the southern half of Illinois, and Missouri.

Hail in CLINTON, IOWA
From 28-FEB-17 16:13:00 to 28-FEB-17 16:13:00 (CST-6)
Location: LOW MOOR
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotters reported dime size hail falling.

Hail in CLINTON, IOWA
From 28-FEB-17 16:18:00 to 28-FEB-17 16:21:00 (CST-6)
Location: LOW MOOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A mix of pea to quarter size hail reported through the official COOP weather observer.

Hail in MUSCATINE, IOWA
From 28-FEB-17 16:14:00 to 28-FEB-17 16:14:00 (CST-6)
Location: WEST LIBERTY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported quarter size hail.

Hail in CLINTON, IOWA
From 28-FEB-17 17:10:00 to 28-FEB-17 17:14:00 (CST-6)
Location: LOW MOOR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer reports a second round of pea to nickel size hail.

Hail in IOWA, IOWA
From 28-FEB-17 17:35:00 to 28-FEB-17 17:35:00 (CST-6)
Location: NORTH ENGLISH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Local law enforcement reported pea to nickel size hail in the 2800 block of 330th Street.

Hail in JOHNSON, IOWA
From 28-FEB-17 17:50:00 to 28-FEB-17 17:50:00 (CST-6)
Location: HILLS
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A report of hail about 1.25 inch in diameter was reported through social media photo.

Hail in JOHNSON, IOWA
From 28-FEB-17 17:59:00 to 28-FEB-17 17:59:00 (CST-6)
Location: IOWA CITY MUNI ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported nickel size hail.

Hail in SCOTT, IOWA
From 28-FEB-17 16:01:00 to 28-FEB-17 16:01:00 (CST-6)
Location: PARKVIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Amateur radio operator reports quarter size hail. The time has been estimated using radar data.

Hail in JOHNSON, IOWA
From 28-FEB-17 16:02:00 to 28-FEB-17 16:02:00 (CST-6)
Location: OASIS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reports 1.25 to 1.50 hail falling along Interstate 80.

Hail in JOHNSON, IOWA
From 28-FEB-17 16:00:00 to 28-FEB-17 16:00:00 (CST-6)
Location: IOWA CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported quarter size hail on the southeast side of Iowa City.

Hail in SCOTT, IOWA
From 28-FEB-17 16:10:00 to 28-FEB-17 16:10:00 (CST-6)
Location: MC CAUSLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public report of pea to nickel size hail was received through social media.

Hail in CLINTON, IOWA
From 28-FEB-17 16:11:00 to 28-FEB-17 16:11:00 (CST-6)
Location: CLINTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reports pea to dime size hail.

Hail in SCOTT, IOWA
From 28-FEB-17 18:50:00 to 28-FEB-17 18:50:00 (CST-6)
Location: DIXON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Quarter size hail reported.

Hail in JOHNSON, IOWA
From 28-FEB-17 17:59:00 to 28-FEB-17 17:59:00 (CST-6)
Location: HILLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail was reported by a trained spotter. Hail could be heard over the phone.

Hail in CEDAR, IOWA
From 28-FEB-17 18:26:00 to 28-FEB-17 18:26:00 (CST-6)
Location: SPRINGDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported quarter size hail.

Hail in VAN BUREN, IOWA
From 28-FEB-17 19:15:00 to 28-FEB-17 19:22:00 (CST-6)
Location: BONAPARTE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported pea to dime size hail.

Hail in LEE, IOWA
From 28-FEB-17 19:28:00 to 28-FEB-17 19:38:00 (CST-6)
Location: HOUGHTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported quarter size hail falling for a 10 minute period.

Hail in HENRY, IOWA
From 28-FEB-17 19:40:00 to 28-FEB-17 19:46:00 (CST-6)
Location: NEW LONDON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported pea to nickel size hail for a 6 minute long period.

Hail in KEOKUK, IOWA
From 28-FEB-17 17:18:00 to 28-FEB-17 17:18:00 (CST-6)
Location: KESWICK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported quarter size hail.

Hail in JOHNSON, IOWA
From 28-FEB-17 17:22:00 to 28-FEB-17 17:22:00 (CST-6)
Location: NORTH LIBERTY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime size hail was reported by a spotter.

Hail in JOHNSON, IOWA
From 28-FEB-17 17:30:00 to 28-FEB-17 17:30:00 (CST-6)
Location: IOWA CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Another storm impacting Iowa City brought nickel size hail. The time of this has been estimated by radar data.

Hail in HENRY, IOWA
From 28-FEB-17 19:49:00 to 28-FEB-17 19:49:00 (CST-6)
Location: NEW LONDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public report of quarter size hail was received.

Hail in HENRY, IOWA
From 28-FEB-17 19:52:00 to 28-FEB-17 19:52:00 (CST-6)
Location: LOWELL
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public report of 1.5 inch diameter hail was received through social media.

Hail in DES MOINES, IOWA
From 28-FEB-17 19:55:00 to 28-FEB-17 19:55:00 (CST-6)
Location: DANVILLE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public report of 1.5 inch diameter hail was received through social media.

Funnel Cloud in SCOTT, IOWA
From 28-FEB-17 15:35:00 to 28-FEB-17 15:37:00 (CST-6)
Location: WALCOTT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management, spotters, and public all reported a funnel cloud over half way to the ground. No damage was noted with this funnel, and no touchdown was witnessed, but numerous photos were posted to social media of this funnel.

Hail in JOHNSON, IOWA
From 28-FEB-17 15:55:00 to 28-FEB-17 15:55:00 (CST-6)
Location: IOWA CITY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported around penny size hail.

Hail in JOHNSON, IOWA
From 28-FEB-17 15:55:00 to 28-FEB-17 15:55:00 (CST-6)
Location: IOWA CITY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 1.25 diameter hail.

Hail in JOHNSON, IOWA
From 28-FEB-17 15:57:00 to 28-FEB-17 15:57:00 (CST-6)
Location: IOWA CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reports dime to nickel size hail covering the ground on the southeast side of Iowa City.

Hail in CLINTON, IOWA
From 28-FEB-17 15:55:00 to 28-FEB-17 15:55:00 (CST-6)
Location: LOW MOOR
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported dime to quarter size hail.

Hail in JOHNSON, IOWA
From 28-FEB-17 15:55:00 to 28-FEB-17 15:55:00 (CST-6)
Location: UNIVERSITY HGTS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter reported estimated penny size hail on the west side of Iowa City.

Tornado in CLINTON, IOWA
From 28-FEB-17 15:53:00 to 28-FEB-17 15:53:00 (CST-6)
Location: FOLLETTS
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Clinton county emergency management observed a brief tornado in a field, with dust debris noted as it touched down. No damage was reported. The estimated peak wind was 70 mph.