Alert archive / Massachusetts / Tornado Warnings in 2025

Tornado Warning 3, NWS Boston/Norton, MA

September 6, 2025Middlesex County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Sep 6, 2025, 4:05 PM EDT for Middlesex County, Worcester County, Massachusetts. It was in force for 40 min. 20 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: Sep 6, 2025, 4:05 PM EDT (20:05 UTC)
Expired: Sep 6, 2025, 4:45 PM EDT
In force: 40 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Middlesex County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 65 km from the middle of the area, began a volume at 20:03 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
Sep 6, 4:05 PM EDT	TSTM WND DMG	Holden, MA	Trees down on Bailey Rd. Time estimated from Radar.
Sep 6, 4:06 PM EDT	TSTM WND DMG	1 N Paxton, MA	tree down on a house (relayed via AR).
Sep 6, 4:06 PM EDT	TSTM WND DMG	1 N Paxton, MA	tree down on a house (relayed via AR).
Sep 6, 4:06 PM EDT	TORNADO	2 E Paxton, MA	TORNADO BRIEFLY TOUCHED DOWN NEAR A SECTION OF SOUTH RD IN PAXTON. DAMAGE WAS LIMITED TO SEVERAL SOFTWOOD TREES BEING UPROOTED.
Sep 6, 4:08 PM EDT	TORNADO	1 Ssw Holden, MA	EF1 TORNADO BRIEFLY TOUCHED DOWN OVER WILLOW BROOK RD IN HOLDEN CAUSING SIGNIFICANT TREE DAMAGE.
Sep 6, 4:10 PM EDT	TSTM WND DMG	1 Ssw Holden, MA	large tree down on Bailey Rd making it impassable.
Sep 6, 4:10 PM EDT	TSTM WND DMG	1 Ssw Holden, MA	large tree down on Bailey Rd making it impassable.
Sep 6, 4:10 PM EDT	TSTM WND DMG	Worcester, MA	tree down with partial road blockage (relayed via AR). Time estimated from radar.
Sep 6, 4:11 PM EDT	TSTM WND DMG	1 N Worcester, MA	Trees downed on Ruthven Ave.
Sep 6, 4:11 PM EDT	TSTM WND DMG	1 N Worcester, MA	Trees downed on Ruthven Ave.
Sep 6, 4:11 PM EDT	TSTM WND DMG	1 S Worcester, MA	Corrects previous tstm wnd dmg report from 1 S Worcester for time. Trees downed on Chandler St in Worcester. Time estimated by radar.
Sep 6, 4:11 PM EDT	TSTM WND DMG	1 S Worcester, MA	Corrects previous tstm wnd dmg report from 1 S Worcester for time. Trees downed on Chandler St in Worcester. Time estimated by radar.
Sep 6, 4:11 PM EDT	TSTM WND DMG	2 Ne Worcester, MA	Large tree on powerlines on Beverly Rd in Worcester. Time estimated by radar.
Sep 6, 4:11 PM EDT	TSTM WND DMG	2 Ne Worcester, MA	Large tree on powerlines on Beverly Rd in Worcester. Time estimated by radar.
Sep 6, 4:15 PM EDT	TSTM WND DMG	Berlin, MA	numerous trees and wires down and roads blocked. Time estimated from radar.
Sep 6, 4:20 PM EDT	TSTM WND DMG	Hudson, MA	several reports of trees/wires down across town. Relayed by amateur radio. Time estimated from radar.
Sep 6, 4:20 PM EDT	TSTM WND DMG	Stow, MA	Downed tree limbs on Route 62 in Stow.
Sep 6, 4:25 PM EDT	TORNADO	2 W Berlin, MA	EF1 TORNADO TOUCHED DOWN WEST OF BARNES HILL ROAD IN BERLIN, MA AND TRAVELED ENE CROSSING DERBY ROAD AND WEST STREET. MANY SOFT OR HARDWOOD TREES SNAPPED AT THE TRUNK OR UPROOTED. SURVEY WAS CONDUCTED USING DRONE FOOTAGE SUPPLIED BY BERLIN, POLICE DEPARTMENT.
Sep 6, 4:30 PM EDT	TORNADO	3 E Bolton, MA	AN EF1 TORNADO TOUCHED DOWN IN STOW, MA NEAR MAPLE STREET AND CONTINUED ENE OVER BOSE AVENUE CAUSING SIGNIFICANT TREE DAMAGE. THE TORNADO LIFTED SOMEWHERE NEAR HARVEST DRIVE AND TOUCHED DOWN AGAIN ABOUT 1.25 MILES ENE JUST WEST OF PACKARD ROAD AND CONTINUED AC
Sep 6, 4:38 PM EDT	TSTM WND DMG	1 S Worcester, MA	Trees downed on Chandler St in Worcester. 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.

Issued	Product	Office	Lasted
Sep 6, 1:13 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.1 hours before the alert went out and 176 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: 1648 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

458 
WFUS51 KBOX 062005
TORBOX
MAC017-027-062045-
/O.NEW.KBOX.TO.W.0003.250906T2005Z-250906T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
405 PM EDT Sat Sep 6 2025

The National Weather Service in Boston/Norton has issued a

* Tornado Warning for...
  East central Worcester County in central Massachusetts...
  Central Middlesex County in northeastern Massachusetts...

* Until 445 PM EDT.

* At 404 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Holden, or near Worcester, moving east at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Worcester, Shrewsbury, Holden, Northborough, Clinton, Lancaster, 
  Sterling, West Boylston, Bolton, and Boylston around 410 PM EDT.
  Marlborough, Hudson, and Westborough around 415 PM EDT.
  Southborough, Stow, and Harvard around 420 PM EDT.
  Framingham, Acton, Sudbury, Maynard, and Boxborough around 425 PM 
  EDT.
  Littleton around 430 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4223 7190 4240 7198 4252 7150 4230 7143
TIME...MOT...LOC 2004Z 251DEG 34KT 4233 7188 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Frank

2 follow-up statements

812 
WWUS51 KBOX 062008
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
408 PM EDT Sat Sep 6 2025

MAC017-027-062045-
/O.CON.KBOX.TO.W.0003.000000T0000Z-250906T2045Z/
Worcester MA-Middlesex MA-
408 PM EDT Sat Sep 6 2025

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR EAST
CENTRAL WORCESTER AND CENTRAL MIDDLESEX COUNTIES...

At 407 PM EDT, a confirmed tornado was located over Holden, or near
Worcester, moving east at 40 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Worcester, Marlborough, Shrewsbury, Hudson, Westborough, Holden, 
  Northborough, Clinton, Lancaster, and Sterling around 415 PM EDT.
  Southborough, Stow, and Harvard around 420 PM EDT.
  Framingham, Acton, Sudbury, Maynard, and Boxborough around 425 PM 
  EDT.
  Littleton around 430 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

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

&&

LAT...LON 4223 7187 4241 7195 4252 7150 4230 7143
TIME...MOT...LOC 2007Z 251DEG 34KT 4234 7186 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

Frank

522 
WWUS51 KBOX 062017
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
417 PM EDT Sat Sep 6 2025

MAC017-027-062045-
/O.CON.KBOX.TO.W.0003.000000T0000Z-250906T2045Z/
Worcester MA-Middlesex MA-
417 PM EDT Sat Sep 6 2025

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR EAST
CENTRAL WORCESTER AND CENTRAL MIDDLESEX COUNTIES...

At 416 PM EDT, a severe thunderstorm capable of producing a tornado
was located over West Boylston, or near Shrewsbury, moving east at 40
mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Marlborough, Shrewsbury, Hudson, Westborough, Northborough, 
  Clinton, Southborough, Lancaster, Sterling, and West Boylston 
  around 420 PM EDT.
  Boxborough around 425 PM EDT.
  Framingham, Acton, Sudbury, Maynard, and Littleton around 430 PM 
  EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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

&&

LAT...LON 4225 7171 4243 7185 4252 7150 4230 7143
TIME...MOT...LOC 2016Z 251DEG 34KT 4237 7176 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Frank

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 6, 3:59 AM EDT	Small Craft Advisory	BOX		16 hr
Sep 6, 2:14 PM EDT	Tornado Warning	BOX	Franklin, Hampshire	31 min
Sep 6, 2:18 PM EDT	Tornado Warning	BOX	Hampden, Hampshire	42 min
Sep 6, 2:29 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	61 min
Sep 6, 2:50 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	55 min
Sep 6, 2:55 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	35 min
Sep 6, 3:01 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	44 min
Sep 6, 3:31 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	59 min
Sep 6, 3:51 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	54 min
Sep 6, 4:20 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Suffolk	55 min
Sep 6, 4:25 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Middlesex, Norfolk, Worcester	65 min
Sep 6, 4:50 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	55 min
Sep 6, 4:55 PM EDT	Special Marine Warning	BOX		80 min
Sep 6, 5:08 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Suffolk, Worcester	52 min
Sep 6, 5:21 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Worcester	54 min
Sep 6, 5:44 PM EDT	Special Marine Warning	BOX		91 min

Nearby

Tornado Warnings in Massachusetts, 2025 Every tornado warning in 2025 Tornadoes in 2025

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.