Hail and Damaging Winds in New York, July 6, 2020

Name: Hail and Damaging Winds in New York, July 6, 2020
Start: 2020-07-06T15:09
End: 2020-07-06T17:52
Location: New York

July 6, 2020 · NWS BGM · 15 events in 3 counties and zones

Thunderstorms developed during the heat of the afternoon over portions of Central New York. Some of these storms became severe and produced mainly tree damage and some large hail.

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: $65,000
Crop damage: None recorded
Events: 15

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.

Thunderstorms developed during the heat of the afternoon over portions of Central New York. Some of these storms became severe and produced mainly tree damage and some large hail.

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 6, 2:59 PM EST, 10 minutes earlier.

Area forecast discussion, Jul 6, 2:59 PM EST, 10 minutes before

Area Forecast Discussion
National Weather Service Binghamton NY
359 PM EDT Mon Jul 6 2020

.SYNOPSIS...
Heat and humidity will build through the rest of the week. While
the majority of the time will be dry, scattered showers and
thunderstorms will be possible each afternoon. A cold front
will arrive Saturday, which will bring an additional chance for
showers and thunderstorms, along with somewhat cooler
temperatures to the region.

&&

.NEAR TERM /THROUGH TUESDAY NIGHT/...
3 pm update...

Forecast in good shape. Only minor adjustments.

This afternoon thunderstorms went up quickly shortly after noon.
CAPE is over 2k J/kg but bulk deep shear is under 20 kts. A low
level boundary is creating enough lift from Steuben County
southeast to Pike County. Temperatures now around 90 degrees and
won't go much higher. Dewpoints today are reasonable and mostly
in the 50s in CNY but mid 60s in Luzerne County. With the weak
winds thunderstorms with heavy rain are moving slowly at best.
Isolated flash flooding will be a problem. thunderstorms will
slowly build north into south central NY the rest of today.

SPC has south central NY and NEPA in a marginal risk of severe
thunderstorms. They also have a severe thunderstorm watch
extending north to Luzerne County until 11 PM. The main severe
weather  threats are damaging winds and large hail.

The thunderstorm threat will end this evening then showers will
end late tonight from north to southeast. Low temperatures will
be in the low and mid 60s.

The front over the southwest part of the area now will lift
northeast tonight into Tuesday. Cooler temperatures will be over
the Catskills with high in the low 80s. The Finger Lakes to the
central southern tier will be the warmest and around 90 but
humidity increases with dewpoints well into the 60s. This
combination will increase heat indices to the mid 90s where a
heat advisory is in effect. The heat will continue into Friday
and expand to the rest of CNY and NEPA.

Tuesday there will be plenty of instability in the hot humid air
mass but little wind and forcing for widespread thunderstorms.
The best chance of any showers and thunderstorms will be during
the heat of the day in the afternoon to early evening. Late
evening convection wanes but a short wave approaching Wednesday
could bring some showers in around sunrise. Low temperatures
only mid to upper 60s with the humid air.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...

Another weak short wave will be riding east along the northern
edge of the broad ridge during the day Wednesday, which will
interact with the persist hot/humid weather across the region to
produce more showers and thunderstorms. The ridge axis becomes
directly overhead on Thursday, which should act to keep
convection to a minimum, but a few isolated storms cannot be
ruled out Thur afternoon.

The continued hot and humid weather conditions will be the story
Wed and Thur with high temperatures topping out in the upper
80s and lower 90s on Wed and in the lower to mid 90s on
Thursday. Dew points will be in the upper 60s and 70s during
this time, which will induce heat indices well into the 90s and
near 100 on Thursday.

This level of heat and humidity will produce a great amount of
instability...around 1000-1500 J/kg of ML CAPE and Wed and
possibly  up to 2000 J/kg on Thursday. The steering flow will
once again be very weak, which will yield very slow moving or
stationary storms with a pulsing nature. PWATs will range from
1.4 to 1.6 inches. The slow-moving nature of the storms,
combined with a modest amount of deep moisture may lead to heavy
downpours and a threat of flash flooding...mainly on Wed with
the greater threat for thunderstorms, but cannot be completely
ruled out on Thursday.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...

The dry weather persists into Thursday night as high pressure lifts
off to the northeast. As this occurs a coastal low will ride north
and draw up a fair amount of deep moisture and interact with the
unstable air mass to produce another round of afternoon/evening
showers and storms. A trailing cold front may be capable of
producing more showers and storms on Saturday, with a slightly
cooler and less humid air mass arriving later in the weekend. Highs
in the 80s expected on Sunday, but diurnally forced convection is
possible within the nw flow...with weak showers and storms
possible.

&&

.AVIATION /20Z MONDAY THROUGH SATURDAY/...
140 PM update...

Mainly VFR through the evening. A thunderstorm with heavy rain
and gusty winds is possible at AVP until 22z. There is a small
chance of a thunderstorm moving north to BGM and ELM between 21
and 00z.

Late tonight MVFR and IFR cigs move north into south central NY
and AVP. These restrictions will continue well into the morning.
At ITH high end MVFR is expected from 11 to 16z. ELM/BGM/AVP
will fall to MVFR around 08z then IFR around 10z lifting by 14z
back to MVFR. VFR is likely toward 16z.

This afternoon winds are light and variable which will continue
through tonight. Tuesday winds shift to south at 5 to 8 kts.

Outlook...

Tuesday afternoon through Saturday...mainly VFR with a chance
of brief restrictions due to afternoon shower and thunderstorm
activity. Chance of IFR valley fog at ELM each morning.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...None.
NY...Heat Advisory from 1 PM to 8 PM EDT Tuesday for NYZ015>018-
     023>025-055.

&&

SYNOPSIS...BJG/TAC
NEAR TERM...TAC
SHORT TERM...BJT
LONG TERM...BJT
AVIATION...TAC

Hazardous weather outlook, Jul 6, 2:17 PM EST, 52 minutes before

Hazardous Weather Outlook
National Weather Service Binghamton NY
317 PM EDT Mon Jul 6 2020

NYZ022-044>046-056-057-062-PAZ038>040-043-044-048-072-071930-
Steuben-Cortland-Chenango-Otsego-Broome-Delaware-Sullivan-Bradford-
Susquehanna-Northern Wayne-Wyoming-Lackawanna-Pike-Southern Wayne-
317 PM EDT Mon Jul 6 2020

This Hazardous Weather Outlook is for central New York and
northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms are expected to develop this afternoon. Some
storms may become strong to severe with gusty winds, small hail, and
locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Heat and humidity will be on the increase throughout the week. Heat
index values Wednesday through Friday afternoons have the potential
to get well into the 90s and perhaps around 100 degrees Thursday and
Friday afternoons in urban valleys.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures. Please relay
any information about severe weather to the NWS.

PAZ047-071930-
Luzerne-
317 PM EDT Mon Jul 6 2020

...SEVERE THUNDERSTORM WATCH 333 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for 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.

Scattered thunderstorms are expected this afternoon and evening.
Some storms may become strong to severe with gusty winds, small hail,
and locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Heat and humidity will be on the increase throughout the week. Heat
index values Wednesday through Friday afternoons have the potential
to get well into the 90s and perhaps around 100 degrees Thursday and
Friday afternoons in urban valleys.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures. Please relay
any information about severe weather to the NWS.

NYZ015>017-023>025-055-071930-
Yates-Seneca-Southern Cayuga-Schuyler-Chemung-Tompkins-Tioga-
317 PM EDT Mon Jul 6 2020

...HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM EDT TUESDAY...

This Hazardous Weather Outlook is for central New York.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms are expected to develop this afternoon. Some
storms may become strong to severe with gusty winds, small hail, and
locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

Heat and humidity will be on the increase throughout the week. Heat
index values Wednesday through Friday afternoons have the potential
to get well into the 90s and perhaps around 100 degrees Thursday and
Friday afternoons in urban valleys.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures. Please relay
any information about severe weather to the NWS.

NYZ018-071930-
Onondaga-
317 PM EDT Mon Jul 6 2020

...HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM EDT TUESDAY...

This Hazardous Weather Outlook is for central New York.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

Heat and humidity will be on the increase throughout the week. Heat
index values Wednesday through Friday afternoons have the potential
to get well into the 90s and perhaps around 100 degrees Thursday and
Friday afternoons in urban valleys.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NYZ009-036-037-071930-
Northern Oneida-Madison-Southern Oneida-
317 PM EDT Mon Jul 6 2020

This Hazardous Weather Outlook is for central New York.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Heat and humidity will be on the increase throughout the week. Heat
index values Wednesday through Friday afternoons have the potential
to get well into the 90s and perhaps around 100 degrees Thursday and
Friday afternoons in urban valleys.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 6, 12:17 PM EST, 2 hours 52 minutes before

Special Weather Statement
National Weather Service Binghamton NY
117 PM EDT Mon Jul 6 2020

PAZ043-061815-
Wyoming PA-
117 PM EDT Mon Jul 6 2020

...STRONG THUNDERSTORM WILL AFFECT...WESTERN WYOMING COUNTY UNTIL 215
PM EDT...

At 116 PM EDT, Doppler radar was tracking a strong thunderstorm over
Kasson Brook, or 11 miles west of Tunkhannock, moving northeast at 5
mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Vernon, Tunkhannock, Noxen, Mehoopany, Meshoppen, Forkston, Kasson
Brook, Osterhout, Evans Falls and Lovelton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4146 7625 4152 7622 4160 7621 4165 7613
      4165 7612 4164 7611 4164 7602 4148 7587
      4138 7618
TIME...MOT...LOC 1716Z 236DEG 5KT 4150 7617

BJT

Special weather statement, Jul 6, 1:36 PM EST, 1 hour 33 minutes before

Special Weather Statement
National Weather Service Binghamton NY
236 PM EDT Mon Jul 6 2020

PAZ038-043-061915-
Wyoming PA-Bradford PA-
236 PM EDT Mon Jul 6 2020

...STRONG THUNDERSTORM WILL AFFECT...SOUTHEASTERN BRADFORD AND
WESTERN WYOMING COUNTIES UNTIL 315 PM EDT...

At 236 PM EDT, Doppler radar was tracking a strong thunderstorm near
Lovelton, or 11 miles south of Wyalusing. This storm was nearly
stationary.

Half inch hail and strong wind gusts will be possible with this
storm.

Locations impacted include...
Wilmot, Hollenback, Forkston, Evans Falls, Kasson Brook, Lovelton,
Stowell and Jenningsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 4154 7622 4155 7625 4156 7638 4165 7626
      4147 7596 4139 7628
TIME...MOT...LOC 1836Z 288DEG 3KT 4150 7624

BJT

Special weather statement, Jul 6, 2:32 PM EST, 37 minutes before

Special Weather Statement
National Weather Service Binghamton NY
332 PM EDT Mon Jul 6 2020

PAZ038-062015-
Bradford PA-
332 PM EDT Mon Jul 6 2020

...STRONG THUNDERSTORM WILL AFFECT...NORTHEASTERN BRADFORD COUNTY
UNTIL 415 PM EDT...

At 332 PM EDT, Doppler radar was tracking a strong thunderstorm near
Windham, or 10 miles east of Athens, moving northeast at 10 mph.

Small hail and winds in excess of 40 mph will be possible with this
storm.

Locations impacted include...
Sayre, Athens, Sheshequin, Litchfield, Orwell, South Waverly,
Windham, Rome, Little Meadows and Warren Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4200 7655 4200 7615 4198 7614 4181 7620
      4186 7656
TIME...MOT...LOC 1932Z 211DEG 8KT 4192 7631

BJT

Special weather statement, Jul 6, 2:55 PM EST, 14 minutes before

Special Weather Statement
National Weather Service Binghamton NY
355 PM EDT Mon Jul 6 2020

NYZ022-062100-
Steuben NY-
355 PM EDT Mon Jul 6 2020

...STRONG THUNDERSTORM WILL AFFECT...SOUTHEASTERN STEUBEN COUNTY
UNTIL 500 PM EDT...

At 355 PM EDT, Doppler radar was tracking a strong thunderstorm over
Jasper, or 17 miles southeast of Hornell, moving east at 15 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Addison, Woodhull, Jasper, Troupsburg, Gang Mills and Pinnacle State
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
minor flooding. Do not drive your vehicle through flooded roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4203 7758 4219 7754 4216 7714 4201 7725
TIME...MOT...LOC 1955Z 288DEG 13KT 4210 7749

BJT

The radar

The Binghamton radar (KBGM), 119 km away, was scanning. The volume nearest the first event began at 20:08 UTC.

Open the radar archive at this moment

Event by event

8 hail, 7 thunderstorm wind. Local standard time, as filed.

Hail, Steuben

When: July 6, 3:09 PM EST
Where: Steuben County, Woodhull
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 42.080, -77.420

Thunderstorm Wind, Steuben

When: July 6, 3:55 PM EST
Where: Steuben County, 0.51 mi W of Canisteo
Measured: 50 kt (58 mph) estimated gust
Property damage: $10,000
Reported by: Social Media
Coordinates: 42.270, -77.610

Strong thunderstorm winds brought down trees.

Hail, Sullivan

When: July 6, 4:10 PM EST
Where: Sullivan County, 0.99 mi ENE of Highland Lake
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 41.523, -74.851

Hail, Sullivan

When: July 6, 4:33 PM EST
Where: Sullivan County, Divine Corners
Measured: 1.75 in hail
Reported by: Social Media
Coordinates: 41.780, -74.670

Thunderstorm Wind, Chemung

When: July 6, 4:35 PM EST
Where: Chemung County, 0.69 mi N of Elmira Hgts
Measured: 50 kt (58 mph) estimated gust
Property damage: $5,000
Reported by: Law Enforcement
Coordinates: 42.160, -76.820

Strong thunderstorm winds brought down a tree near South Avenue and Brickyard Lane.

Hail, Chemung

When: July 6, 4:35 PM EST
Where: Chemung County, 1.47 mi SSW of Elmira Hgts
Measured: 1 in hail
Reported by: Social Media
Coordinates: 42.130, -76.830

Hail, Sullivan

When: July 6, 4:51 PM EST
Where: Sullivan County, 0.86 mi NW of Kauneonga Lake
Measured: 1.75 in hail
Reported by: Social Media
Coordinates: 41.690, -74.840

Thunderstorm Wind, Chemung

When: July 6, 4:52 PM EST
Where: Chemung County, Erin
Measured: 50 kt (58 mph) estimated gust
Property damage: $10,000
Reported by: Broadcast Media
Coordinates: 42.180, -76.670

Strong thunderstorm winds brought down trees and destroyed some playground equipment.

Thunderstorm Wind, Sullivan

When: July 6, 5:00 PM EST
Where: Sullivan County, 0.52 mi E of Monticello
Measured: 50 kt (58 mph) estimated gust
Property damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.650, -74.690

Strong thunderstorm winds brought down a tree on top of a vehicle.

Hail, Sullivan

When: July 6, 5:00 PM EST
Where: Sullivan County, 0.52 mi E of Monticello
Measured: 0.75 in hail
Reported by: Social Media
Coordinates: 41.650, -74.690

Thunderstorm Wind, Sullivan

When: July 6, 5:04 PM EST
Where: Sullivan County, 3.45 mi S of Monguap Vly
Measured: 50 kt (58 mph) estimated gust
Property damage: $10,000
Reported by: State Official
Coordinates: 41.620, -74.780

Strong thunderstorm winds brought down trees and wires on Marina Road.

Hail, Sullivan

When: July 6, 5:09 PM EST
Where: Sullivan County, 1.37 mi W of Anderson
Measured: 1 in hail
Property damage: $5,000
Reported by: Social Media
Coordinates: 41.904, -74.746

Hail from a thunderstorm damaged an RV and house roofs.

Thunderstorm Wind, Sullivan

When: July 6, 5:09 PM EST
Where: Sullivan County, Jeffersonville
Measured: 50 kt (58 mph) estimated gust
Property damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.780, -74.930

Strong thunderstorm winds brought down power lines.

Thunderstorm Wind, Sullivan

When: July 6, 5:44 PM EST
Where: Sullivan County, 1.24 mi WNW of Barryville
Measured: 50 kt (58 mph) estimated gust
Property damage: $15,000
Reported by: Public
Coordinates: 41.490, -74.950

Strong thunderstorm winds brought down a swath of trees.

Hail, Sullivan

When: July 6, 5:52 PM EST
Where: Sullivan County, 0.86 mi SW of Anderson
Measured: 1 in hail
Reported by: Public
Coordinates: 41.890, -74.730

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in New York in 2020 Every state in 2020 This day in weather history Warnings in New York, July 2020

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 911696, 911697, 912984, 912992, 912986, 912987, 912993, 912994, 912997, 912999, 912990, 912996, 913001, 913004, 913056.