EF1 tornado, Jamestown to York, Indiana, June 21, 2021

1. EF065 to 85 mph

   Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

2. EF186 to 110 mphthis tornado

   Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

3. EF2111 to 135 mph

   Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

4. EF3136 to 165 mph

   Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

5. EF4166 to 200 mph

   Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

6. EF5over 200 mph

   Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

7. Unrated

   The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

Rating

EF1

Date

June 21, 2021

Touchdown

2:52 AM EDT (06:52 UTC)

Lifted

3:04 AM EDT (07:04 UTC)

On the ground

12 minutes

Path length

10.0 miles (16.1 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

County

Steuben County

Touchdown point

41.731, -85.003

Lift-off point

41.703, -84.813

Record number

2106210052-01

9 damage points were recorded along this path by NWS IWX, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 100 mph.

• Much of the roof torn of this building and scattered downstream for several blocks.
• Portions of roof torn off, doors blown out and truck flipped.
• Barn heavily damaged. Outbuilding destroyed. Numerous trees here uprooted or snapped.
• Numerous trees snapped/uprooted.

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

This was a multi-round severe weather event. The first round started around 6pm with discrete cells and a few clusters moving from Knox, IN to Hillsdale, MI until around 9pm. The second round featured additional isolated development along a boundary draped across the northern CWA 9P-1A. The third round associated with the primary cold front swept across the CWA 1AM-5AM. This is when the Fremont, IN damage occurred.||After further assessment, there appears to be lack of damage for any conclusive tornado event in Coldwater, MI. Steuben County, IN Emergency Manager performed a virtual survey of the EF-1 tornado near Fremont. Local media also helped in another virtual survey to conclude an EF-1 tornado also occurred just south of Woodland, IN in SE St. Joseph County.

A survey of damage confirmed an EF-1 tornado with path length of 10 miles, maximum width of 100 yards and estimated peak winds of 100 mph. This tornado tracked east hitting the Country Meadows golf course causing extensive tree damage and destroyed a barn just west of Fremont. The tornado then turned right, tracking through Fremont south of US127 snapping trees and damaging roofs of several structures. The tornado continued east southeast across mainly open fields, snapping trees along the way before heavily damaging another barn and destroying several outbuildings on a farm residence south of Clear Lake. The tornado continued toward the Indiana Ohio stateline before dissipating in an open field.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

The county was under a severe thunderstorm watch, issued at 05:03 UTC and running to 08:47 UTC.

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Angola (ANQ), 17 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The Northern Indiana radar (KIWX), 77 km away, was scanning. The volume nearest the touchdown began at 06:52 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

Local storm reports within 60 km of the path, in the three hours either side.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

The live radar over the trackEvery 2021 tornado in IndianaEvery tornado in Indiana since 1950Warnings in force in Indiana nowThe forecast where you are

3 more were confirmed in the United States that day.

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.