Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 119, NWS Albany, NY

July 20, 2021Fulton County, Hamilton County, Herkimer County, New York

NWS Albany, NY issued this severe thunderstorm warning at Jul 20, 2021, 7:02 PM EDT for Fulton County, Hamilton County, Herkimer County, New York. It was in force for 58 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 20, 2021, 7:02 PM EDT (23:02 UTC)
Expired: Jul 20, 2021, 8:00 PM EDT
In force: 58 min
Issued by: NWS Albany, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Fulton County, NY, Hamilton County, NY, Herkimer County, NY

The radar

The Ft Drum radar (KTYX), 83 km from the middle of the area, began a volume at 23:06 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.

What was reported inside it

Time	Report	Where	Remark
Jul 20, 7:30 PM EDT	TSTM WND DMG	1 N Herkimer, NY	NUMEROUS TREES DOWN.
Jul 20, 7:32 PM EDT	TSTM WND DMG	1 Ne Herkimer, NY	WIRES DOWN AND ARCING. E GERMAN STREET AND LAKE STREET.
Jul 20, 7:40 PM EDT	TSTM WND DMG	2 Ene Little Falls, NY	LARGE TREE ON WIRES RESULT IN A FIRE.
Jul 20, 7:45 PM EDT	TSTM WND DMG	3 E Little Falls, NY	SEVERAL TREES DOWN
Jul 20, 7:45 PM EDT	TSTM WND DMG	Dolgeville, NY	NUMEROUS TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 20, 3:05 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 11.0 hours before the alert went out and 113 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: 85 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 793 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

046 
WUUS51 KALY 202302
SVRALY
NYC035-041-043-210000-
/O.NEW.KALY.SV.W.0119.210720T2302Z-210721T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
702 PM EDT Tue Jul 20 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Southwestern Hamilton County in eastern New York...
  Northwestern Fulton County in eastern New York...
  Southern Herkimer County in eastern New York...

* Until 800 PM EDT.

* At 701 PM EDT, severe thunderstorms were located along a line
  extending from 9 miles south of McKeever to Holland Patent to
  Verona, moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Ilion, Herkimer, Little Falls, Mohawk, Frankfort, Dolgeville, Ohio,
  West Winfield, Newport, Stratford, Middleville, Poland, Cold Brook,
  Jordanville, Northwood, Cedarville, Russia, Fairfield,
  Elizabethtown and Norway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

Please report hail size...damaging winds and reports of trees down to
the National Weather Service by email at Alb.Stormreport@noaa.gov...
On Facebook at www.facebook.com/nwsalbany or twitter @nwsalbany

LAT...LON 4322 7507 4324 7507 4323 7510 4326 7516
      4330 7515 4330 7512 4333 7508 4346 7509
      4344 7456 4307 7471 4287 7502 4291 7510
      4286 7514 4286 7521 4305 7522
TIME...MOT...LOC 2301Z 284DEG 28KT 4349 7504 4323 7525 4311 7560 

HAIL...<.75IN
WIND...60MPH
 
$$

Rathbun

1 follow-up statement

556 
WWUS51 KALY 202331
SVSALY

Severe Weather Statement
National Weather Service Albany NY
731 PM EDT Tue Jul 20 2021

NYC035-041-043-210000-
/O.CON.KALY.SV.W.0119.000000T0000Z-210721T0000Z/
Hamilton NY-Fulton NY-Herkimer NY-
731 PM EDT Tue Jul 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SOUTHWESTERN HAMILTON...NORTHWESTERN FULTON AND SOUTHERN HERKIMER
COUNTIES...

At 730 PM EDT, severe thunderstorms were located along a line
extending from near Stratford to Middleville to New Hartford, moving
east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Ilion, Herkimer, Little Falls, Mohawk, Frankfort, Dolgeville, West
Winfield, Newport, Stratford, Middleville, Poland, Cold Brook,
Jordanville, Cedarville, Fairfield, Elizabethtown, Norway, Ingham
Mills, Spinnerville and Cedar Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4322 7507 4334 7494 4344 7456 4307 7471
      4287 7502 4291 7510 4286 7514 4286 7521
      4305 7522
TIME...MOT...LOC 2330Z 283DEG 29KT 4324 7466 4314 7493 4306 7530 

HAIL...<.75IN
WIND...60MPH
 
$$

Rathbun

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 2:07 PM EDT	Areal Flood Advisory	ALY	Warren	113 min
Jul 20, 2:09 PM EDT	Special Weather Statement	ALY	Saratoga	36 min
Jul 20, 2:26 PM EDT	Severe Thunderstorm Warning	ALY	Saratoga, Washington	49 min
Jul 20, 2:56 PM EDT	Areal Flood Advisory	ALY	Saratoga, Washington	2 hr
Jul 20, 3:10 PM EDT	Special Weather Statement	ALY	Rensselaer	35 min
Jul 20, 3:51 PM EDT	Areal Flood Advisory	ALY	Saratoga, Warren, Washington	80 min
Jul 20, 3:58 PM EDT	Special Weather Statement	ALY	Washington	47 min
Jul 20, 6:28 PM EDT	Special Weather Statement	ALY	Hamilton	47 min
Jul 20, 6:46 PM EDT	Special Weather Statement	ALY	Hamilton, Herkimer	44 min
Jul 20, 6:52 PM EDT	Severe Thunderstorm Warning	ALY	Hamilton, Herkimer	38 min
Jul 20, 7:25 PM EDT	Special Weather Statement	ALY	Warren	35 min
Jul 20, 7:34 PM EDT	Areal Flood Advisory	ALY	Fulton, Hamilton, Herkimer, Montgomery, Schenectady	3 hr
Jul 20, 7:34 PM EDT	Special Weather Statement	ALY	Warren	26 min
Jul 20, 7:41 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer, Montgomery, Saratoga, Warren	49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.