Alert archive / Connecticut / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 84, NWS Albany, NY

July 6, 2021Northwest Hills Planning Region, Connecticut; Dutchess County, New York

NWS Albany, NY issued this severe thunderstorm warning at Jul 6, 2021, 4:16 PM EDT for Northwest Hills Planning Region, Connecticut; Dutchess County, New York. It was in force for 45 min. 8 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 6, 2021, 4:16 PM EDT (20:16 UTC)
Expired
Jul 6, 2021, 5:01 PM EDT
In force
45 min
Issued by
NWS Albany, NY
Area
Storm-based polygon
Hail
1.5 in
Wind
70.0 mph

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

The radar

The Brookhaven radar (KOKX), 104 km from the middle of the area, began a volume at 20:19 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

TimeReportWhereRemark
Jul 6, 4:17 PM EDTTSTM WND DMG1 Sse Millbrook, NYTREES DOWNED.
Jul 6, 4:28 PM EDTTSTM WND DMG2 Nw Kent, CTMULTIPLE TREES DOWNED IN MACEDONIA SECTION OF KENT
Jul 6, 4:28 PM EDTTSTM WND DMGKent, CTROUTE 7 NORTHBOUND AND ROUTE 341 EASTBOUND ARE CLOSED DUE TO TREES DOWN.
Jul 6, 4:28 PM EDTTSTM WND DMGKent, CTSEVERAL TREES DOWN. TIME ESTIMATED BY RADAR.
Jul 6, 4:30 PM EDTTSTM WND DMG1 Ese Kent, CTPOWER LINES DOWNED ON SEGAR MOUNTAIN ROAD
Jul 6, 4:38 PM EDTTSTM WND DMGWarren, CTSEVERAL TREES DOWN. TIME ESTIMATED BY RADAR.
Jul 6, 4:46 PM EDTTSTM WND DMG3 S Litchfield, CTTREE DOWN ON POWERLINES
Jul 6, 4:47 PM EDTTSTM WND DMGLitchfield, CTSEVERAL TREES DOWN. TIME ESTIMATED BY RADAR.

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.

IssuedProductOfficeLasted
Jul 6, 1:13 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.3 hours before the alert went out and 104 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2021-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 230 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
230 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
1202 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

989 
WUUS51 KALY 062016
SVRALY
CTC005-NYC027-062115-
/O.NEW.KALY.SV.W.0084.210706T2016Z-210706T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
416 PM EDT Tue Jul 6 2021

The National Weather Service in Albany has issued a

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

* Until 515 PM EDT.

* At 416 PM EDT, a severe thunderstorm was located over Millbrook, or
  11 miles east of Poughkeepsie, moving east at 20 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Torrington, New Milford, Pleasant Valley, Amenia, Kent, Millbrook,
  Litchfield, Gaylordsville, New Preston, Cornwall Bridge, Wingdale,
  Dover Plains, Bethlehem, Washington, Goshen, Morris, Warren,
  Cornwall, Bantam and Salt Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows!

Large hail and damaging winds and continuous 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.

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

&&

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 4161 7348 4163 7350 4165 7349 4167 7351
      4161 7352 4162 7386 4182 7382 4189 7317
      4160 7313
TIME...MOT...LOC 2016Z 264DEG 19KT 4175 7370 

HAIL...1.50IN
WIND...70MPH
 
$$

KSL
2 follow-up statements
280 
WWUS51 KALY 062046
SVSALY

Severe Weather Statement
National Weather Service Albany NY
446 PM EDT Tue Jul 6 2021

NYC027-062056-
/O.CAN.KALY.SV.W.0084.000000T0000Z-210706T2115Z/
Dutchess NY-
446 PM EDT Tue Jul 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL 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 800 PM EDT for
northern Connecticut.

LAT...LON 4161 7348 4164 7349 4165 7349 4167 7351
      4185 7350 4189 7317 4160 7313
TIME...MOT...LOC 2046Z 277DEG 30KT 4173 7339 

$$

CTC005-062115-
/O.CON.KALY.SV.W.0084.000000T0000Z-210706T2115Z/
Litchfield CT-
446 PM EDT Tue Jul 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR WEST CENTRAL LITCHFIELD COUNTY...

At 446 PM EDT, a severe thunderstorm was located near New Preston, or
9 miles north of New Milford, moving east at 35 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Torrington, New Milford, Kent, Litchfield, New Preston, Cornwall
Bridge, Gaylordsville, Bethlehem, Washington, Goshen, Morris, Warren,
Cornwall, Bantam, Haight Vineyard, Kelly Corner, West Goshen, Skiff
Mountain, Lower Merryall and Marble Dale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows.

Continuous 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.

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

&&

LAT...LON 4161 7348 4164 7349 4165 7349 4167 7351
      4185 7350 4189 7317 4160 7313
TIME...MOT...LOC 2046Z 277DEG 30KT 4173 7339 

HAIL...1.25IN
WIND...70MPH
 
$$

KSL
750 
WWUS51 KALY 062101
SVSALY

Severe Weather Statement
National Weather Service Albany NY
501 PM EDT Tue Jul 6 2021

CTC005-062111-
/O.CAN.KALY.SV.W.0084.000000T0000Z-210706T2115Z/
Litchfield CT-
501 PM EDT Tue Jul 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LITCHFIELD COUNTY
IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
northern Connecticut.

LAT...LON 4161 7348 4164 7349 4165 7349 4167 7351
      4185 7350 4189 7317 4160 7313
TIME...MOT...LOC 2100Z 264DEG 19KT 4174 7328 

$$

KSL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 3:33 PM EDTHeat AdvisoryALYNorthwest Hills Planning Region27 hr
Jul 6, 3:58 PM EDTSpecial Weather StatementALY32 min
Jul 6, 4:43 PM EDTSevere Thunderstorm WarningALYNorthwest Hills Planning Region37 min
Jul 6, 5:04 PM EDTSpecial Weather StatementALY26 min
Jul 5, 9:10 PM EDTSpecial Weather StatementALYHerkimer35 min
Jul 5, 10:36 PM EDTSpecial Weather StatementALYHerkimer39 min
Jul 5, 11:02 PM EDTSpecial Weather StatementALYMontgomery28 min
Jul 5, 11:18 PM EDTSpecial Weather StatementALYMontgomery27 min
Jul 5, 11:30 PM EDTSpecial Weather StatementALYOtsego45 min
Jul 5, 11:54 PM EDTSpecial Weather StatementALYOtsego36 min
Jul 6, 12:07 AM EDTSpecial Weather StatementALYMontgomery38 min
Jul 6, 12:22 AM EDTSpecial Weather StatementALYSchoharie23 min
Jul 6, 1:12 AM EDTSpecial Weather StatementALYRensselaer33 min
Jul 6, 1:08 PM EDTSpecial Weather StatementALYSchoharie52 min
Jul 6, 1:23 PM EDTSpecial Weather StatementALYMontgomery52 min
Jul 6, 1:31 PM EDTSpecial Weather StatementALYRensselaer44 min
Jul 6, 1:35 PM EDTSpecial Weather StatementALYOtsego40 min
Jul 6, 1:49 PM EDTSevere Thunderstorm WarningALYHerkimer26 min
Jul 6, 1:53 PM EDTSpecial Weather StatementALYMontgomery37 min
Jul 6, 2:05 PM EDTSpecial Weather StatementALYSchoharie40 min
Jul 6, 2:13 PM EDTSpecial Weather StatementALYRensselaer47 min
Jul 6, 2:22 PM EDTSevere Thunderstorm WarningALYAlbany, Montgomery, Schenectady, Schoharie38 min
Jul 6, 2:38 PM EDTSevere Thunderstorm WarningALYUlster52 min
Jul 6, 2:47 PM EDTSpecial Weather StatementALYSchoharie43 min
Jul 6, 2:53 PM EDTSpecial Weather StatementALYAlbany52 min
Jul 6, 3:06 PM EDTSevere Thunderstorm WarningALYGreene, Schoharie39 min
Jul 6, 3:23 PM EDTSevere Thunderstorm WarningALYAlbany, Columbia, Rensselaer37 min
Jul 6, 3:40 PM EDTSpecial Weather StatementALYDutchess35 min
Jul 6, 3:43 PM EDTSevere Thunderstorm WarningALYDutchess, Ulster62 min
Jul 6, 4:06 PM EDTSpecial Weather StatementALYColumbia24 min
Jul 6, 4:08 PM EDTSevere Thunderstorm WarningALYColumbia24 min
Jul 6, 4:51 PM EDTSpecial Weather StatementALYPutnam39 min

Nearby

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