EF1 tornado, Kaisertown to Montgomery, New York, August 27, 2020

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

August 27, 2020

Touchdown

6:15 PM EDT (22:15 UTC)

Lifted

6:20 PM EDT (22:20 UTC)

On the ground

5 minutes

Path length

2.6 miles (4.2 km)

Path width

600 yards (549 m)

Deaths

0

Injuries

0

Property damage

$25,000

County

Orange County

Touchdown point

41.505, -74.260

Lift-off point

41.513, -74.214

Record number

2008271615-01

An upper level disturbance in close proximity to a departing warm front triggered numerous severe thunderstorms across Southeastern New York. These storms produced a tornado in Montgomery, NY in Orange County.

EF1 Tornado in Montgomery, NY. Maximum path length was 600 yards and a path length of 2.6 miles.||A National Weather Service storm survey team confirmed an EF1 |tornado in Montgomery, Orange County, NY. The tornado likely |touched down on the northwest side of the Orange County Airport |near the Wallkill River. Straight line winds on the southern flank|of the tornado likely caused tree damage at the Intersection of |Route 211 and Canning Road as well as minor structural damage |noted to two buildings on the airport. A temporary meteorological |station, installed on the airfield to support this weekend's |airshow, measured sustained winds of 69 mph with a peak gust of 82|mph before the communications went out. ||The tornado moved east from near the river into the village of |Montgomery, where damage was extensive along Weaver Street, as |well as Chandler Lane. The tornado then continued eastward across |Beaver Dam Road to Old Nealytown Road where it ended. The bulk of |the damage consisted of large snapped and uprooted trees.

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 tornado watch, issued at 19:19 UTC and running to 00:00 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 Enhanced Risk, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:58 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 Albany radar (KENX), 121 km away, was scanning. The volume nearest the touchdown began at 22:15 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 2020 tornado in New YorkEvery tornado in New York since 1950Warnings in force in New York nowThe forecast where you are

14 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.