Tornado Survey Results: June 28

Overview

Here is a preliminary summary of the tornadoes that occurred on June 28, 2017.

Regional Storm Reports

Tornadoes:

Tornado 1 - Central City/Prairieburg
Linn/Jones COUNTIES

Date	6/28/2017
Time (Local)	6:38 PM - 7:01 PM (CDT)
EF Rating	EF2
Est. Peak Winds	120 MPH
Path Length	11.7 MILES
Max Width	200 YARDS
Injuries/Deaths	1 / 0
Summary: Tornado touched down south of Central City in the county fairgrounds outfield area, and tracked about 12 miles northeast through Prairieburg before lifting in rural Jones County. The most intense damage occurred near and in Prairieburg. At a farmstead just southwest of town, a woman was injured when her garage collapsed on her. In Prairieburg, the grain elevator sustained severe damage, one mobile home was lofted and destroyed, and another mobile home severely damaged. On the east edge of town, a horse barn was destroyed. One horse was killed and 2 others sustained injuries. Northeast of town, a hog building was destroyed, killing several young hogs.

Track Map

Tornado 2 - N Monticello
Jones/Delaware COUNTIES

Date	6/28/2017
Time (Local)	7:14 PM - 7:18 PM (CDT)
EF Rating	EF2
Est. Peak Winds	120 MPH
Path Length	2.5 MI
Max Width	30 YARDS
Injuries/Deaths	0 / 0
Summary: A narrow Ef2 tornado with winds estimated at 120 mph touched down in a field about miles north of Monticello and tracked east northeast from Jones County into Delaware County. The tornado struck neighboring farmsteads at the junction of 148th Ave. and Jones-Delaware Co Road. Two grain bins and seven outbuildings were destroyed. Two garages had the doors blown in and five wooden power poles were snapped, including three larger transmission lines. The most unusual damage was an 18 foot missile that was formed from 4 sections of a grain bin roof that were folded into a narrow cone shape and propelled into the garage attic over 100 yards away.

Track Map

Tornado - Oxford Junction
Jones COUNTY

Date	6/28/2017
Time (Local)	7:56 PM - 8:00 PM (CDT)
EF Rating	EF1
Est. Peak Winds	90 MPH
Path Length	2 MI
Max Width	15 YARDS
Injuries/Deaths	0 / 0
Summary: Tornado began in a field and traveled mostly through farm land and wooded river valley. Just south of Oxford Junction, two unanchored mobile homes were destroyed, a machine shed was Damaged, and a camper was blown over.

Track Map

Tornado - 2 SE Vinton, IA
Benton County

Date	6/28/17
Time (Local)	7:26 PM (CDT)
EF Rating	EF-0
Est. Peak Winds	74 mph
Path Length	0.1 mi
Max Width	15 yards
Injuries/Deaths	0/0
Summary: A brief touchdown of an EF-0 tornado that was seen on a citizen's video was confirmed by a location of isolated damage to two trees and a corner of a metal outbuilding's roof where a panel was blown off.

Track Map

Downloadable KMZ File

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Storm Reports:

Interactive Storm Report Map	SPC Storm Reports

Radar:

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