EF1 tornado, Norwich Corners, New York, June 30, 2017

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 30, 2017

Touchdown

5:28 PM EDT (21:28 UTC)

Lifted

5:29 PM EDT (21:29 UTC)

On the ground

1 minutes

Path length

0.6 miles (1.0 km)

Path width

150 yards (137 m)

Deaths

0

Injuries

0

County

Herkimer County

Touchdown point

43.026, -75.210

Lift-off point

43.025, -75.200

Record number

1706301528-01

A fast moving upper level shortwave passed through the area during the afternoon hours on Friday, June 30th, 2017. With a warm and muggy air mass in place, this shortwave sparked off numerous strong to severe thunderstorms, especially across the Mohawk Valley, Saratoga Region and Capital Region. The severe storms produced two EF-1 tornadoes in Fulton and Herkimer counties, as well as knocked down numerous trees and power lines across the region. There was also one report of large hail in Saratoga county. One of the storms also caused four injuries in Schodack, where a fireworks display tent collapsed due to thunderstorm winds. At least 1500 people lost power as a result of the thunderstorms.

The National Weather Service Survey Team in Albany, NY confirmed an EF-1 tornado near Sauquoit in Herkimer county, NY. There were no injuries or fatalities reported. The tornado began near the intersection of Mallory Road and Graffenburg Road in Sauquoit. The tornado dissipated near the 8th tee of Stonebridge Golf and Country Club. A stable was partially destroyed. Debris from the stable was ejected 700 yards onto the golf course. Numerous trees were uprooted and snapped. A home sustained some siding damage. Although horses and donkeys were in the field as the tornado passed through, none of the animals were injured.

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 17:46 UTC and running to 23:53 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 Storm Prediction Center had this point in a Slight Risk. The outlook in force was issued at 20:04 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

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.

The Ft Drum radar (KTYX), 90 km away, was scanning. The volume nearest the touchdown began at 21:26 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 2017 tornado in New YorkEvery tornado in New York since 1950Warnings in force in New York 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.