EF0 tornado, Ohioville, New York, August 9, 2024

1. EF065 to 85 mphthis tornado

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

2. EF186 to 110 mph

   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

EF0

Date

August 9, 2024

Touchdown

5:51 PM EDT (21:51 UTC)

Lifted

5:52 PM EDT (21:52 UTC)

On the ground

1 minutes

Path length

0.6 miles (0.9 km)

Path width

30 yards (27 m)

Deaths

0

Injuries

0

Property damage

$3,000

County

Ulster County

Touchdown point

41.726, -74.071

Lift-off point

41.733, -74.064

Record number

2408091551-01

On August 9, 2024, remnants of Tropical Storm Debby impacted eastern New York, bringing periods of heavy rain and gusty winds. Total rainfall accumulations generally ranged from about 1-4 with several instances of flash flooding in the Capital District and isolated instances in the Eastern Catskills and Upper-Hudson Valley. Non-thunderstorm wind gusts throughout eastern New York peaked between about 35-50 mph, leading to numerous reports of tree and power line damage especially in Herkimer and Washington Counties. Nearly 25,000 power outages can also be attributed to strong winds or resulting downed trees and wires with Warren County being the most impacted with nearly 6400 people without power. Additionally, an EF0 tornado was confirmed by NWS Storm Survey in Ulster County. Hardwood trees were uprooted along the NYS Thruway near exit 18 as a result. ||Governor Kathy Hochul declared a State of Emergency in the afternoon of Friday, August 9th due to extensive flooding, thunderstorms and tornadoes across the state.

A National Weather Service Storm Survey, with assistance from received video footage, determined an EF-0 tornado occurred along the NYS Thruway near exit 18. The tornado uprooted a few hardwood trees as it crossed the interstate. Estimated peak winds were 76 mph with a path length of 0.58 miles and path width of 30 yards.

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 17:28 UTC and running to 22:11 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, with a 0.05 chance of a tornado within 25 miles. The outlook in force was issued at 19:53 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), 95 km away, was scanning. The volume nearest the touchdown began at 21:49 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 2024 tornado in New YorkEvery tornado in New York since 1950Warnings in force in New York nowThe forecast where you are

2 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.