Hail and Damaging Winds in New York, July 21, 2010

Name: Hail and Damaging Winds in New York, July 21, 2010
Start: 2010-07-21T11:21
End: 2010-07-21T19:10
Location: New York

July 21, 2010 · NWS BGM · 60 events in 12 counties and zones

As an area of low pressure over Wisconsin moved northeast, a stationary boundary over Pennsylvania pushed northward as a warm front during the morning hours. This put much of central New York in the warm sector during the day, and numerous showers and thunderstorms developed later in the day ahead of an approaching cold front and well defined upper level disturbance.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $61,000
Crop damage: None recorded
Events: 60

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BGM wrote it up.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before the first event at Jul 21, 10:45 AM EST, 36 minutes earlier.

Area forecast discussion, Jul 21, 10:45 AM EST, 36 minutes before

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Hazardous weather outlook, Jul 21, 10:48 AM EST, 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BINGHAMTON NY
1148 AM EDT WED JUL 21 2010

NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-
044-047-048-072-221600-
NORTHERN ONEIDA-YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN-
SCHUYLER-CHEMUNG-TOMPKINS-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO-
OTSEGO-TIOGA-BROOME-DELAWARE-SULLIVAN-BRADFORD-SUSQUEHANNA-
NORTHERN WAYNE-WYOMING-LACKAWANNA-LUZERNE-PIKE-SOUTHERN WAYNE-
1148 AM EDT WED JUL 21 2010

...SEVERE THUNDERSTORM WATCH 507 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW
YORK...SOUTHEASTERN NEW YORK AND NORTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, Jul 21, 10:35 AM EST, 46 minutes before

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Special weather statement, Jul 21, 11:19 AM EST, 2 minutes before

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The radar

The Binghamton radar (KBGM), 70 km away, was scanning. The volume nearest the first event began at 16:21 UTC.

Open the radar archive at this moment

Event by event

31 hail, 28 thunderstorm wind, 1 funnel cloud. Local standard time, as filed.

Hail, Seneca

When: July 21, 11:21 AM EST
Where: Seneca County, 1.72 mi SW of Covert
Measured: 0.88 in hail
Reported by: Public
Coordinates: 42.560, -76.690

Thunderstorm Wind, Seneca

When: July 21, 11:23 AM EST
Where: Seneca County, Interlaken
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Law Enforcement
Coordinates: 42.620, -76.720

Power lines were knocked down.

Hail, Tompkins

When: July 21, 11:25 AM EST
Where: Tompkins County, 0.86 mi SW of Trumansburg
Measured: 1 in hail
Reported by: Law Enforcement
Coordinates: 42.540, -76.660

One tree was blown down in the village.

Hail, Tompkins

When: July 21, 11:30 AM EST
Where: Tompkins County, 0.86 mi SW of Trumansburg
Measured: 0.75 in hail
Reported by: Public
Coordinates: 42.540, -76.660

Thunderstorm Wind, Tompkins

When: July 21, 11:33 AM EST
Where: Tompkins County, 0.86 mi NW of Mc Kinneys Pt
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Law Enforcement
Coordinates: 42.490, -76.490

Many trees and power lines were blown down in the town of Lansing.

Hail, Tompkins

When: July 21, 11:40 AM EST
Where: Tompkins County, Etna
Measured: 1 in hail
Reported by: Public
Coordinates: 42.480, -76.380

Hail, Tompkins

When: July 21, 11:40 AM EST
Where: Tompkins County, 0.69 mi N of Dryden
Measured: 0.88 in hail
Reported by: Public
Coordinates: 42.490, -76.300

Hail, Tompkins

When: July 21, 11:45 AM EST
Where: Tompkins County, 0.69 mi N of Dryden
Measured: 0.88 in hail
Reported by: Public
Coordinates: 42.490, -76.300

Thunderstorm Wind, Cayuga

When: July 21, 11:45 AM EST
Where: Cayuga County, 0.69 mi N of Port Byron
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Trained Spotter
Coordinates: 43.040, -76.630

Numerous trees and power lines were blown down. The most damage occurred along Route 38 and Centerport Road.

Hail, Tompkins

When: July 21, 11:46 AM EST
Where: Tompkins County, Etna
Measured: 0.88 in hail
Reported by: Public
Coordinates: 42.480, -76.380

Thunderstorm Wind, Cayuga

When: July 21, 11:50 AM EST to 12:05 PM EST
Where: Cayuga County, Montezuma
Measured: 50 kt (58 mph) estimated gust
Property damage: $3,000
Reported by: Law Enforcement
Coordinates: 43.020, -76.720

Many trees were blown down from Montezuma to Throop. The event occurred from 12:50 pm to 1:05 pm.

Hail, Tompkins

When: July 21, 12:05 PM EST
Where: Tompkins County, 0.69 mi S of Ithaca
Measured: 1 in hail
Reported by: Public
Coordinates: 42.440, -76.500

Funnel Cloud, Chenango

When: July 21, 12:07 PM EST
Where: Chenango County, Afton
Reported by: Public
Coordinates: 42.230, -75.530

Thunderstorm Wind, Broome

When: July 21, 12:15 PM EST
Where: Broome County, 0.51 mi W of Windsor
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Law Enforcement
Coordinates: 42.080, -75.640

Many trees and power lines were blown down.

Thunderstorm Wind, Delaware

When: July 21, 12:27 PM EST
Where: Delaware County, 0.86 mi SE of Deposit
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Law Enforcement
Coordinates: 42.060, -75.420

Trees and power lines were blown down.

Hail, Onondaga

When: July 21, 12:31 PM EST
Where: Onondaga County, La Fayette
Measured: 0.88 in hail
Reported by: Public
Coordinates: 42.880, -76.100

Thunderstorm Wind, Onondaga

When: July 21, 12:33 PM EST
Where: Onondaga County, La Fayette
Measured: 50 kt (58 mph) measured gust
Reported by: Trained Spotter
Coordinates: 42.880, -76.100

Thunderstorm Wind, Onondaga

When: July 21, 12:35 PM EST
Where: Onondaga County, La Fayette
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Trained Spotter
Coordinates: 42.880, -76.100

Numerous small trees were blown down, and three telephone poles were snapped near the bases.

Thunderstorm Wind, Onondaga

When: July 21, 12:36 PM EST
Where: Onondaga County, La Fayette
Measured: 50 kt (58 mph) estimated gust
Property damage: $3,000
Reported by: Trained Spotter
Coordinates: 42.880, -76.100

Three large trees were blown down on Route 20. Route 20 was impassable near LaFayette. Two hay trailers were blown over on a farm.

Thunderstorm Wind, Chenango

When: July 21, 1:00 PM EST
Where: Chenango County, Greene
Measured: 50 kt (58 mph) estimated gust
Property damage: $3,000
Reported by: Amateur Radio
Coordinates: 42.330, -75.770

Many trees and power lines were blown down in the town of Greene, on county route 32 and county 2.

Thunderstorm Wind, Delaware

When: July 21, 1:00 PM EST
Where: Delaware County, Hancock
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Trained Spotter
Coordinates: 41.950, -75.280

Trees were blown down.

Thunderstorm Wind, Chenango

When: July 21, 1:05 PM EST
Where: Chenango County, 1.38 mi N of Bainbridge
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Broadcast Media
Coordinates: 42.300, -75.480

Many trees and power lines were blown down.

Thunderstorm Wind, Chenango

When: July 21, 1:05 PM EST
Where: Chenango County, Afton
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Amateur Radio
Coordinates: 42.230, -75.530

Many trees and power lines were blown down.

Hail, Delaware

When: July 21, 1:10 PM EST
Where: Delaware County, Fishs Eddy
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 41.970, -75.170

Hail, Delaware

When: July 21, 1:11 PM EST
Where: Delaware County, 0.69 mi S of Treadwell
Measured: 1.25 in hail
Reported by: Amateur Radio
Coordinates: 42.340, -75.050

Hail, Delaware

When: July 21, 1:11 PM EST
Where: Delaware County, 0.69 mi N of Franklin
Measured: 1.25 in hail
Reported by: Broadcast Media
Coordinates: 42.340, -75.170

Hail, Madison

When: July 21, 1:30 PM EST
Where: Madison County, Georgetown
Measured: 1.75 in hail
Reported by: Public
Coordinates: 42.770, -75.720

Hail, Broome

When: July 21, 1:30 PM EST
Where: Broome County, 0.86 mi SW of Bilsboro
Measured: 1 in hail
Reported by: Public
Coordinates: 42.790, -76.980

Thunderstorm Wind, Seneca

When: July 21, 1:30 PM EST
Where: Seneca County, 0.51 mi E of Waterloo
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Law Enforcement
Coordinates: 42.900, -76.860

Several trees and power lines were blown down.

Thunderstorm Wind, Delaware

When: July 21, 1:35 PM EST
Where: Delaware County, 1.38 mi N of Hamden
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 42.220, -75.000

Trees were blown down.

Hail, Sullivan

When: July 21, 1:40 PM EST
Where: Sullivan County, Livingston Manor
Measured: 2 in hail
Reported by: Public
Coordinates: 41.900, -74.830

Thunderstorm Wind, Sullivan

When: July 21, 2:10 PM EST
Where: Sullivan County, Parksville
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Public
Coordinates: 41.850, -74.770

Several trees were blown down on Aden Hill Road.

Hail, Sullivan

When: July 21, 2:20 PM EST
Where: Sullivan County, 2.48 mi NE of Long Eddy
Measured: 1 in hail
Reported by: Public
Coordinates: 41.870, -75.090

Hail, Cortland

When: July 21, 2:22 PM EST
Where: Cortland County, 0.51 mi W of Cortland
Measured: 1 in hail
Reported by: Public
Coordinates: 42.600, -76.180

Hail, Tompkins

When: July 21, 2:26 PM EST
Where: Tompkins County, 0.69 mi N of Dryden
Measured: 1.25 in hail
Reported by: Public
Coordinates: 42.490, -76.300

Hail, Sullivan

When: July 21, 2:31 PM EST
Where: Sullivan County, Jeffersonville
Measured: 1 in hail
Reported by: Public
Coordinates: 41.780, -74.930

Thunderstorm Wind, Sullivan

When: July 21, 2:35 PM EST
Where: Sullivan County, Briscoe
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Law Enforcement
Coordinates: 41.770, -74.880

Trees and power lines were blown down.

Hail, Sullivan

When: July 21, 2:40 PM EST
Where: Sullivan County, Swan Lake
Measured: 1 in hail
Reported by: Public
Coordinates: 41.750, -74.780

Hail, Sullivan

When: July 21, 2:45 PM EST
Where: Sullivan County, 0.52 mi E of Monticello
Measured: 1 in hail
Reported by: Public
Coordinates: 41.650, -74.690

Hail, Sullivan

When: July 21, 2:45 PM EST
Where: Sullivan County, Swan Lake
Measured: 1.25 in hail
Reported by: Public
Coordinates: 41.750, -74.780

Thunderstorm Wind, Cortland

When: July 21, 2:45 PM EST to 2:50 PM EST
Where: Cortland County, 0.86 mi SW of Marathon
Measured: 61 kt (70 mph) estimated gust
Property damage: $20,000
Reported by: NWS Storm Survey
Coordinates: 42.440, -76.040

Significant wind damage occurred along Rout 134B, Divers Crossing Road. Hundreds of |trees were snapped and uprooted. The area was about 2 1/2 miles long and 1/2 mile wide. Four homes and one business had damage to roofs from fallen trees. Two structures showed minor wind damage to roofs. Winds were estimated at 70 to 80 mph.

Thunderstorm Wind, Sullivan

When: July 21, 3:00 PM EST
Where: Sullivan County, 0.52 mi E of Monticello
Measured: 50 kt (58 mph) estimated gust
Property damage: $3,000
Reported by: Trained Spotter
Coordinates: 41.650, -74.690

Trees and power lines were blown down. A patio tent was blown into the road. Pea size hail also fell.

Thunderstorm Wind, Sullivan

When: July 21, 3:00 PM EST
Where: Sullivan County, Kiamesha
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Trained Spotter
Coordinates: 41.680, -74.650

A large tree was blown down across power lines on Anawana Lake Road. A transformer and telephone pole were knocked down.

Hail, Broome

When: July 21, 3:05 PM EST
Where: Broome County, Triangle
Measured: 1.75 in hail
Reported by: Public
Coordinates: 42.330, -75.870

Hail, Sullivan

When: July 21, 3:09 PM EST
Where: Sullivan County, Rock Hill
Measured: 0.75 in hail
Reported by: Public
Coordinates: 41.630, -74.600

Hail, Chenango

When: July 21, 3:10 PM EST
Where: Chenango County, Greene
Measured: 1.75 in hail
Reported by: Public
Coordinates: 42.330, -75.770

Thunderstorm Wind, Broome

When: July 21, 3:24 PM EST
Where: Broome County, 1.72 mi SE of Glen Aubrey
Measured: 50 kt (58 mph) estimated gust
Property damage: $1,000
Reported by: Law Enforcement
Coordinates: 42.250, -76.000

Several trees were blown down in Glen Aubrey.

Hail, Tioga

When: July 21, 3:35 PM EST
Where: Tioga County, 2.91 mi SE of West Newark
Measured: 1 in hail
Reported by: Public
Coordinates: 42.220, -76.190

Hail, Broome

When: July 21, 3:45 PM EST
Where: Broome County, Harpursville
Measured: 1 in hail
Reported by: Public
Coordinates: 42.180, -75.620

Thunderstorm Wind, Delaware

When: July 21, 4:30 PM EST
Where: Delaware County, Hancock
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: Trained Spotter
Coordinates: 41.950, -75.280

Several trees and power lines were blown down. Nickel size hail fell.

Hail, Tompkins

When: July 21, 5:10 PM EST
Where: Tompkins County, Slaterville Spgs
Measured: 0.88 in hail
Reported by: Public
Coordinates: 42.400, -76.350

Hail, Broome

When: July 21, 5:45 PM EST
Where: Broome County, Vestal
Measured: 0.75 in hail
Reported by: Public
Coordinates: 42.080, -76.050

Hail, Broome

When: July 21, 6:03 PM EST
Where: Broome County, Vestal
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 42.080, -76.050

Dime to nickel size hail fell at Binghamton University.