Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 255, NWS Binghamton, NY

September 13, 20219 counties in New York

NWS Binghamton, NY issued this severe thunderstorm warning at Sep 13, 2021, 1:26 AM EDT for 9 counties in New York. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 13, 2021, 1:26 AM EDT (05:26 UTC)
Expired: Sep 13, 2021, 2:19 AM EDT
In force: 53 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Cayuga County, NY, Chemung County, NY, Cortland County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Yates County, NY

The radar

The Binghamton radar (KBGM), 74 km from the middle of the area, began a volume at 05:29 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 12, 10:25 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 5.4 hours before the alert went out and 168 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 412 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 706 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

539 
WUUS51 KBGM 130526
SVRBGM
NYC011-015-023-097-099-101-107-109-123-130630-
/O.NEW.KBGM.SV.W.0255.210913T0526Z-210913T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Binghamton NY
126 AM EDT Mon Sep 13 2021

The National Weather Service in Binghamton has issued a

* Severe Thunderstorm Warning for...
  Seneca County in central New York...
  Schuyler County in central New York...
  Yates County in central New York...
  Southern Cayuga County in central New York...
  Chemung County in central New York...
  Western Cortland County in central New York...
  Tioga County in central New York...
  Eastern Steuben County in central New York...
  Tompkins County in central New York...

* Until 230 AM EDT.

* At 125 AM EDT, severe thunderstorms were located along a line
  extending from near Kendaia to Lawrenceville, moving east at 60
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Ithaca, Elmira, Cortland, Corning, Southport, Barton, Big Flats,
  Horseheads, Newfield and Penn Yan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Damaging winds and continuous cloud to ground lightning is occurring 
with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4276 7712 4276 7698 4285 7697 4279 7629
      4277 7627 4277 7611 4201 7613 4201 7723
TIME...MOT...LOC 0525Z 271DEG 52KT 4277 7695 4201 7714 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MWG

5 follow-up statements

043 
WWUS51 KBGM 130538
SVSBGM

Severe Weather Statement
National Weather Service Binghamton NY
138 AM EDT Mon Sep 13 2021

NYC123-130548-
/O.CAN.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Yates NY-
138 AM EDT Mon Sep 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR YATES COUNTY IS CANCELLED...

The storms which prompted the warning have weakened. Therefore, the 
warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
central New York.

LAT...LON 4246 7693 4247 7689 4252 7690 4261 7687
      4273 7694 4276 7695 4277 7698 4285 7697
      4279 7629 4277 7627 4277 7611 4241 7613
      4201 7613 4202 7711
TIME...MOT...LOC 0538Z 271DEG 52KT 4277 7673 4201 7692 

$$

NYC011-015-023-097-099-101-107-109-130630-
/O.CON.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Seneca NY-Schuyler NY-Cayuga NY-Chemung NY-Cortland NY-Tioga NY-
Steuben NY-Tompkins NY-
138 AM EDT Mon Sep 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR SENECA...SCHUYLER...SOUTHERN CAYUGA...CHEMUNG...WESTERN
CORTLAND...TIOGA...SOUTHEASTERN STEUBEN AND TOMPKINS COUNTIES...

At 138 AM EDT, severe thunderstorms were located along a line
extending from Aurora to Millerton, moving east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Ithaca, Elmira, Cortland, Corning, Southport, Barton, Big Flats,
Horseheads, Newfield and Hector.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4246 7693 4247 7689 4252 7690 4261 7687
      4273 7694 4276 7695 4277 7698 4285 7697
      4279 7629 4277 7627 4277 7611 4241 7613
      4201 7613 4202 7711
TIME...MOT...LOC 0538Z 271DEG 52KT 4277 7673 4201 7692 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MWG

821 
WWUS51 KBGM 130548
SVSBGM

Severe Weather Statement
National Weather Service Binghamton NY
148 AM EDT Mon Sep 13 2021

NYC097-101-130557-
/O.CAN.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Schuyler NY-Steuben NY-
148 AM EDT Mon Sep 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SCHUYLER AND SOUTHEASTERN
STEUBEN COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
central New York.

LAT...LON 4225 7669 4223 7664 4225 7662 4228 7662
      4229 7666 4250 7660 4273 7673 4277 7687
      4279 7682 4279 7629 4277 7627 4277 7611
      4201 7613 4202 7688
TIME...MOT...LOC 0547Z 271DEG 52KT 4277 7655 4201 7675 

$$

NYC011-015-023-099-107-109-130630-
/O.CON.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Seneca NY-Cayuga NY-Chemung NY-Cortland NY-Tioga NY-Tompkins NY-
148 AM EDT Mon Sep 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR CENTRAL SENECA...SOUTHERN CAYUGA...EASTERN CHEMUNG...WESTERN
CORTLAND...TIOGA AND TOMPKINS COUNTIES...

At 147 AM EDT, severe thunderstorms were located along a line
extending from Scipio Center to Wellsburg, moving east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Ithaca, Elmira, Cortland, Southport, Barton, Newfield, Waverly,
Owego, Cayuga Heights and Lansing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4225 7669 4223 7664 4225 7662 4228 7662
      4229 7666 4250 7660 4273 7673 4277 7687
      4279 7682 4279 7629 4277 7627 4277 7611
      4201 7613 4202 7688
TIME...MOT...LOC 0547Z 271DEG 52KT 4277 7655 4201 7675 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MWG

734 
WWUS51 KBGM 130559
SVSBGM

Severe Weather Statement
National Weather Service Binghamton NY
159 AM EDT Mon Sep 13 2021

NYC015-099-130609-
/O.CAN.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Seneca NY-Chemung NY-
159 AM EDT Mon Sep 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SENECA AND EASTERN
CHEMUNG COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4206 7641 4213 7636 4218 7637 4222 7636
      4224 7638 4240 7637 4259 7640 4269 7657
      4273 7657 4279 7629 4277 7627 4277 7611
      4201 7613 4201 7648
TIME...MOT...LOC 0559Z 271DEG 52KT 4277 7634 4201 7654 

$$

NYC011-023-107-109-130630-
/O.CON.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Cayuga NY-Cortland NY-Tioga NY-Tompkins NY-
159 AM EDT Mon Sep 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR SOUTHEASTERN CAYUGA...WESTERN CORTLAND...TIOGA AND EASTERN
TOMPKINS COUNTIES...

At 159 AM EDT, severe thunderstorms were located along a line
extending from Kelloggsville to Waverly, moving east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Cortland, Owego, Homer, Caroline, Virgil, Groton, Locke, Dryden,
Litchfield and Berkshire.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4206 7641 4213 7636 4218 7637 4222 7636
      4224 7638 4240 7637 4259 7640 4269 7657
      4273 7657 4279 7629 4277 7627 4277 7611
      4201 7613 4201 7648
TIME...MOT...LOC 0559Z 271DEG 52KT 4277 7634 4201 7654 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MWG

676 
WWUS51 KBGM 130610
SVSBGM

Severe Weather Statement
National Weather Service Binghamton NY
210 AM EDT Mon Sep 13 2021

NYC109-130619-
/O.CAN.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Tompkins NY-
210 AM EDT Mon Sep 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN TOMPKINS COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4202 7618 4203 7613 4217 7613 4222 7615
      4231 7613 4245 7612 4255 7613 4266 7633
      4279 7629 4277 7627 4277 7611 4201 7613
      4201 7616
TIME...MOT...LOC 0609Z 271DEG 52KT 4277 7615 4201 7635 

$$

NYC011-023-107-130630-
/O.CON.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Cayuga NY-Cortland NY-Tioga NY-
210 AM EDT Mon Sep 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR SOUTHEASTERN CAYUGA...WESTERN CORTLAND AND SOUTHEASTERN TIOGA
COUNTIES...

At 209 AM EDT, severe thunderstorms were located along a line
extending from near Preble to Nichols, moving east at 60 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Cortland, Homer, Preble, Scott, Baltimore, Glen Haven, Dresserville,
Como, East Berkshire and Cortland West.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4202 7618 4203 7613 4217 7613 4222 7615
      4231 7613 4245 7612 4255 7613 4266 7633
      4279 7629 4277 7627 4277 7611 4201 7613
      4201 7616
TIME...MOT...LOC 0609Z 271DEG 52KT 4277 7615 4201 7635 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MWG

859 
WWUS51 KBGM 130619
SVSBGM

Severe Weather Statement
National Weather Service Binghamton NY
219 AM EDT Mon Sep 13 2021

NYC011-023-107-130629-
/O.CAN.KBGM.SV.W.0255.000000T0000Z-210913T0630Z/
Cayuga NY-Cortland NY-Tioga NY-
219 AM EDT Mon Sep 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CAYUGA...WESTERN
CORTLAND AND SOUTHEASTERN TIOGA COUNTIES IS CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 4202 7618 4203 7613 4217 7613 4222 7615
      4231 7613 4245 7612 4255 7613 4266 7633
      4279 7629 4277 7627 4277 7611 4201 7613
      4201 7616
TIME...MOT...LOC 0619Z 271DEG 52KT 4277 7595 4201 7615 

$$

MWG

The office that day

Everything else NWS Binghamton, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 13, 12:45 AM EDT	Severe Thunderstorm Warning Considerable damage threat	BGM	Chemung, Schuyler, Seneca, Steuben, Yates	60 min
Sep 13, 2:01 AM EDT	Special Weather Statement	BGM	Broome, Chenango, Cortland	44 min
Sep 13, 2:25 AM EDT	Special Weather Statement	BGM	Chenango, Delaware, Otsego	35 min
Sep 13, 2:49 AM EDT	Special Weather Statement	BGM	Delaware, Otsego	26 min

Nearby

Severe Thunderstorm Warnings in New York, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.