Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 4, NWS Albany, NY

April 21, 2021Dutchess County, New York; Northwest Hills Planning Region, Connecticut

NWS Albany, NY issued this severe thunderstorm warning at Apr 21, 2021, 2:41 PM EDT for Dutchess County, New York; Northwest Hills Planning Region, Connecticut. It was in force for 64 min. 13 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: Apr 21, 2021, 2:41 PM EDT (18:41 UTC)
Expired: Apr 21, 2021, 3:45 PM EDT
In force: 64 min
Issued by: NWS Albany, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Northwest Hills Planning Region, CT, Dutchess County, NY

The radar

The Brookhaven radar (KOKX), 97 km from the middle of the area, began a volume at 18:42 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
Apr 21, 2:45 PM EDT	TSTM WND DMG	3 Nnw Wingdale, NY	TREES DOWN SOUTH OF DOVER PLAINS HIGH SCHOOL.
Apr 21, 2:45 PM EDT	HAIL 0.88	3 Nnw Wingdale, NY	JUST SOUTH OF DOVER PLAINS HIGH SCHOOL.
Apr 21, 2:47 PM EDT	TSTM WND DMG	3 Ssw Kent, CT	TREE DOWN ON WIRES ON KENT ROAD
Apr 21, 2:48 PM EDT	TSTM WND DMG	4 Sw Cornwall Bridge, CT	SMALL TREES DOWN NEAR KENT FALLS STATE PARK ENTRANCE ALONG ROUTE 7N.
Apr 21, 2:49 PM EDT	TORNADO	3 Ssw Kent, CT	NWS SURVEY TEAM CONFIRMED AN EF-0 TORNADO NEAR BULLS BRIDGE, CT. MAX WINDS OF 85 MPH.
Apr 21, 2:49 PM EDT	TORNADO	Amenia, NY	EF-1 TORNADO WAS CONFIRMED IN THE TOWN OF AMENIA, NY. MAX WINDS OF 100 MPH.
Apr 21, 2:50 PM EDT	TSTM WND DMG	3 Ssw Kent, CT	WIRES DOWN, TREES DOWN, CAR PORT FLIPPED OVER AT BULLS BRIDGE BODY SHOP.
Apr 21, 3:00 PM EDT	TSTM WND DMG	3 Sw Cornwall Bridge, CT	TREES WERE SNAPPED AND DOWNED ACROSS ROUTE 7 NEAR KENT FALLS STATE PARK
Apr 21, 3:15 PM EDT	TSTM WND DMG	1 Ene Falls Village, CT	TREE DOWN ON WIRES ON ROUTE 7 NORTH TO PAGE RD.
Apr 21, 3:17 PM EDT	TSTM WND DMG	Falls Village, CT	TREE DOWN ON WIRES AT INTERSECTION OF WARREN TURNPIKE AND WATER ST.
Apr 21, 3:20 PM EDT	TSTM WND DMG	2 Ssw Sharon, CT	WIRES DOWN FROM WIND.
Apr 21, 3:23 PM EDT	HAIL 0.75	5 W Torrington, CT
Apr 21, 3:25 PM EDT	TSTM WND DMG	1 Nw Winsted, CT	WIRES DOWN FROM WIND. POWER IS OUT.

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
Apr 21, 12:28 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.7 hours before the alert went out and 97 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1427 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

693 
WUUS51 KALY 211841
SVRALY
CTC005-NYC027-211945-
/O.NEW.KALY.SV.W.0004.210421T1841Z-210421T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
241 PM EDT Wed Apr 21 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Litchfield County in northern Connecticut...
  Southeastern Dutchess County in east central New York...

* Until 345 PM EDT.

* At 241 PM EDT, a severe thunderstorm was located over Dover Plains,
  or 9 miles north of Sherman, moving northeast at 55 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Torrington, New Milford, Sherman, Pawling, Thomaston, New Hartford,
  Amenia, Kent, Sharon, Norfolk, Millbrook, Litchfield, Millerton,
  Northwest Harwinton, Stanfordville, New Hartford Center, Woodbury
  Center, New Preston, Wingdale and Dover Plains.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail, damaging winds and frequent cloud to ground lightning is 
occurring with this storm. 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.

&&

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 4151 7339 4149 7344 4167 7352 4153 7353
      4151 7370 4188 7376 4205 7325 4204 7301
      4197 7303 4197 7289 4189 7294 4181 7295
      4180 7302 4164 7298 4156 7316 4151 7316
      4151 7332 4149 7333 4147 7332
TIME...MOT...LOC 1841Z 245DEG 48KT 4171 7356 

HAIL...1.00IN
WIND...60MPH
 
$$

Frugis

3 follow-up statements

489 
WWUS51 KALY 211908
SVSALY

Severe Weather Statement
National Weather Service Albany NY
308 PM EDT Wed Apr 21 2021

NYC027-211917-
/O.CAN.KALY.SV.W.0004.000000T0000Z-210421T1945Z/
Dutchess NY-
308 PM EDT Wed Apr 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DUTCHESS COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
northern Connecticut...western Massachusetts...and east central New
York.

LAT...LON 4151 7339 4149 7344 4163 7350 4165 7349
      4167 7352 4196 7349 4205 7325 4204 7307
      4203 7301 4197 7303 4197 7289 4189 7294
      4181 7295 4180 7302 4164 7298 4156 7315
      4151 7317 4151 7332 4147 7332
TIME...MOT...LOC 1907Z 246DEG 38KT 4183 7322 

$$

CTC005-211945-
/O.CON.KALY.SV.W.0004.000000T0000Z-210421T1945Z/
Litchfield CT-
308 PM EDT Wed Apr 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR LITCHFIELD COUNTY...

At 307 PM EDT, a severe thunderstorm was located near Torrington,
moving northeast at 45 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Torrington, New Milford, Sherman, Thomaston, New Hartford, Kent,
Sharon, Norfolk, Litchfield, Northwest Harwinton, Oakville,
Terryville, New Hartford Center, Woodbury Center, Gaylordsville,
Falls Village, New Preston, Cornwall Bridge, Winsted and Watertown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4151 7339 4149 7344 4163 7350 4165 7349
      4167 7352 4196 7349 4205 7325 4204 7307
      4203 7301 4197 7303 4197 7289 4189 7294
      4181 7295 4180 7302 4164 7298 4156 7315
      4151 7317 4151 7332 4147 7332
TIME...MOT...LOC 1907Z 246DEG 38KT 4183 7322 

HAIL...1.00IN
WIND...60MPH
 
$$

Frugis

638 
WWUS51 KALY 211928
SVSALY

Severe Weather Statement
National Weather Service Albany NY
328 PM EDT Wed Apr 21 2021

CTC005-211945-
/O.CON.KALY.SV.W.0004.000000T0000Z-210421T1945Z/
Litchfield CT-
328 PM EDT Wed Apr 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHEASTERN LITCHFIELD COUNTY...

At 328 PM EDT, a severe thunderstorm was located over New Hartford
Center, or 7 miles northeast of Torrington, moving northeast at 35
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Torrington, New Hartford, Norfolk, Falls Village, Northwest
Harwinton, Terryville, Winsted, New Hartford Center, Harwinton,
Salisbury, Goshen, Colebrook, South Norfolk, West Torrington,
Torringford, South Canaan, Pequabuck, Mooreville, Kelly Corner and
Mill Brook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4164 7299 4198 7343 4202 7332 4205 7319
      4204 7307 4203 7301 4197 7303 4197 7289
      4189 7294 4181 7295 4180 7302
TIME...MOT...LOC 1928Z 245DEG 31KT 4190 7302 

HAIL...1.00IN
WIND...60MPH
 
$$

Frugis

824 
WWUS51 KALY 211944
SVSALY

Severe Weather Statement
National Weather Service Albany NY
344 PM EDT Wed Apr 21 2021

CTC005-211954-
/O.EXP.KALY.SV.W.0004.000000T0000Z-210421T1945Z/
Litchfield CT-
344 PM EDT Wed Apr 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LITCHFIELD COUNTY
WILL EXPIRE AT 345 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
northern Connecticut...and western Massachusetts.

LAT...LON 4164 7299 4198 7343 4202 7332 4205 7319
      4204 7307 4203 7301 4197 7303 4197 7289
      4189 7294 4181 7295 4180 7302
TIME...MOT...LOC 1944Z 245DEG 48KT 4198 7278 

$$

Frugis

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 9:54 PM EDT	Winter Weather Advisory	ALY	Hamilton, Herkimer	18 hr
Apr 21, 1:02 PM EDT	Special Weather Statement	ALY	Ulster	43 min
Apr 21, 1:57 PM EDT	Special Weather Statement	ALY	Dutchess	33 min
Apr 21, 2:04 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess, Ulster	41 min
Apr 21, 2:20 PM EDT	Special Weather Statement	ALY	Fulton, Montgomery, Schoharie	55 min
Apr 21, 2:47 PM EDT	Tornado Warning	ALY	Dutchess	28 min

Nearby

Severe Thunderstorm Warnings in New York, 2021 Severe Thunderstorm Warnings in Connecticut, 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.