Severe Thunderstorm Warning 46, NWS Boston/Norton, MA

Issued

Jul 6, 2021, 4:20 PM EDT (20:20 UTC)

Expired

Jul 6, 2021, 5:15 PM EDT

In force

55 min

Issued by

NWS Boston/Norton, MA

Area

Storm-based polygon

Hail

0.75 in

Wind

60.0 mph

Counties Capitol Planning Region, CT, Hampden County, MA, Hampshire County, MA

The Albany radar (KENX), 113 km from the middle of the area, began a volume at 20:23 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.

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

610 
WUUS51 KBOX 062020
SVRBOX
CTC003-013-MAC013-015-062115-
/O.NEW.KBOX.SV.W.0046.210706T2020Z-210706T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
420 PM EDT Tue Jul 6 2021

The National Weather Service in Boston/Norton has issued a

* Severe Thunderstorm Warning for...
  Northwestern Tolland County in northern Connecticut...
  Northern Hartford County in northern Connecticut...
  Southern Hampshire County in western Massachusetts...
  Hampden County in western Massachusetts...

* Until 515 PM EDT.

* At 419 PM EDT, a severe thunderstorm was located over Granville, 
  or 9 miles southwest of Westfield. Additional severe storms were 
  located between Tolland and Sheffield. Theses storms were moving 
  east at 30 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Springfield, Chicopee, Enfield, Westfield, Holyoke, Windsor,
  Agawam, West Springfield, Simsbury, Ludlow, Bloomfield, Longmeadow,
  Suffield, East Longmeadow, Ellington, Wilbraham, Windsor Locks,
  Palmer, Stafford and Somers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring. 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 these storms, and may lead to 
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4214 7305 4215 7303 4221 7302 4217 7230
      4187 7234 4190 7291 4197 7289 4197 7303
      4204 7301 4204 7305 4207 7306
TIME...MOT...LOC 2019Z 281DEG 24KT 4208 7292 

HAIL...0.75IN
WIND...60MPH
 
$$

Loconto

199 
WWUS51 KBOX 062038
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
438 PM EDT Tue Jul 6 2021

CTC003-013-MAC013-015-062115-
/O.CON.KBOX.SV.W.0046.000000T0000Z-210706T2115Z/
Tolland CT-Hartford CT-Hampshire MA-Hampden MA-
438 PM EDT Tue Jul 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHWESTERN TOLLAND...NORTHERN HARTFORD...SOUTHERN HAMPSHIRE AND
HAMPDEN COUNTIES...

At 437 PM EDT, severe thunderstorm was located from Suffield to 
Granville, moving east at 30 mph.

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

SOURCE...Trained weather spotters. Trees and wires were downed in 
         Southwick at 430 PM from these severe thunderstorms.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Springfield, Chicopee, Enfield, Westfield, Holyoke, Windsor, Agawam,
West Springfield, Simsbury, Ludlow, Bloomfield, Longmeadow, Suffield,
East Longmeadow, Ellington, Wilbraham, Windsor Locks, Palmer,
Stafford and Somers.

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 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 4214 7305 4215 7303 4221 7302 4217 7230
      4187 7234 4190 7291 4197 7289 4197 7303
      4204 7301 4204 7305 4207 7306
TIME...MOT...LOC 2037Z 281DEG 24KT 4206 7276 

HAIL...0.75IN
WIND...60MPH
 
$$

Loconto

046 
WWUS51 KBOX 062110
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
510 PM EDT Tue Jul 6 2021

CTC003-013-MAC013-015-062120-
/O.EXP.KBOX.SV.W.0046.000000T0000Z-210706T2115Z/
Tolland CT-Hartford CT-Hampshire MA-Hampden MA-
510 PM EDT Tue Jul 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TOLLAND...
NORTHERN HARTFORD...SOUTHERN HAMPSHIRE AND HAMPDEN COUNTIES WILL
EXPIRE AT 515 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

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

LAT...LON 4214 7305 4215 7303 4221 7302 4217 7230
      4187 7234 4190 7291 4197 7289 4197 7303
      4204 7301 4204 7305 4207 7306
TIME...MOT...LOC 2110Z 281DEG 24KT 4203 7256 

$$

Loconto

Severe Thunderstorm Warnings in Connecticut, 2021Severe Thunderstorm Warnings in Massachusetts, 2021Every severe thunderstorm warning in 2021

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.