EF1 tornado, Kipps to Craigsville, New York, July 29, 2011

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

July 29, 2011

Touchdown

4:57 PM EDT (20:57 UTC)

Lifted

5:15 PM EDT (21:15 UTC)

On the ground

18 minutes

Path length

4.7 miles (7.5 km)

Path width

100 yards (91 m)

Deaths

0

Injuries

0

Property damage

$50,000

County

Orange County

Touchdown point

41.404, -74.292

Lift-off point

41.370, -74.215

Record number

1107291457-01

A passing pre-frontal trough and cold front, coupled with a mid level disturbance, produced severe thunderstorms across Southeast New York. The largest impact was across the Lower Hudson Valley, where there was at least one supercell, which produced a tornado in Orange County, and caused a microburst in Westchester County.

Based on a storm survey performed by the National Weather Service, radar signatures, and eyewitness reports, the National Weather Service confirmed an EF-1 tornado that ran from Goshen to Blooming Grove NY, on Friday July 29th.|The tornado touched down near 109 Coleman Road and lifted near 600 Craigsville Road in Goshen, then skipped along near Craigsville Road, before finally lifting near 379 Prospect Road in Blooming Grove. All along this path, trees converged into a well-defined narrow path. The most significant property damage occurred on Hasbrouck Road in Goshen, where 2 houses directly across the street from one another - 101 and 110 Hasbrouck - were impacted. At 101 Hasbrouck Road, roof shingles were torn off, skylight windows were blown in with glass shattering, and debris was embedded all along the sides of the house including a small branch that went right through a gutter. At 110 Hasbrouck Road, trees were draped all over the house with minor structural damage.

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

3 minutes of warning. NWS OKX issued a tornado warning for this county at 20:54 UTC, 3 minutes before the tornado touched down, in force until 21:30 UTC.

The county was under a severe thunderstorm watch, issued at 18:41 UTC and running to 21:10 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 19:59 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.

Orange County Airport (MGJ), 14 km from the path, in the two hours either side.

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

The Brookhaven radar (KOKX), 130 km away, was scanning. The volume nearest the touchdown began at 20:57 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 2011 tornado in New YorkEvery tornado in New York since 1950Warnings in force in New York nowThe forecast where you are

5 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.