Alert archive / Massachusetts / Tornado Warnings in 2026
Tornado Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this tornado warning at Jun 18, 2026, 5:30 PM EDT for Hampden County, Hampshire County, Worcester County, Massachusetts. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2026, 5:30 PM EDT (21:30 UTC)
- Expired
- Jun 18, 2026, 5:56 PM EDT
- In force
- 26 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Hampden County, MA, Hampshire County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 86 km from the middle of the area, began a volume at 21:30 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 18, 1:45 PM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.5 hours before the alert went out and 167 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.
- Mixed-layer CAPE
- 22 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 583 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 384 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
258
WFUS51 KBOX 182130
TORBOX
MAC013-015-027-182215-
/O.NEW.KBOX.TO.W.0002.260618T2130Z-260618T2215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
530 PM EDT Thu Jun 18 2026
The National Weather Service in Boston/Norton has issued a
* Tornado Warning for...
West central Worcester County in central Massachusetts...
Eastern Hampshire County in western Massachusetts...
East central Hampden County in western Massachusetts...
* Until 615 PM EDT.
* At 530 PM EDT, a severe thunderstorm capable of producing a tornado
was located over West Brookfield, or 17 miles west of Worcester,
moving east at 35 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...
Spencer, Leicester, Rutland, Paxton, North Brookfield, West
Brookfield, Brookfield, East Brookfield, Oakham, and New Braintree
around 535 PM EDT.
Worcester, Holden, and Auburn around 540 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 4218 7224 4229 7226 4241 7191 4220 7184
TIME...MOT...LOC 2130Z 260DEG 32KT 4222 7214
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
BW1 follow-up statement
538 WWUS51 KBOX 182156 SVSBOX Severe Weather Statement National Weather Service Boston/Norton MA 556 PM EDT Thu Jun 18 2026 MAC013-015-027-182206- /O.CAN.KBOX.TO.W.0002.000000T0000Z-260618T2215Z/ Worcester MA-Hampshire MA-Hampden MA- 556 PM EDT Thu Jun 18 2026 ...THE TORNADO WARNING FOR WEST CENTRAL WORCESTER...EASTERN HAMPSHIRE AND EAST CENTRAL HAMPDEN COUNTIES IS CANCELLED... The storm which prompted the warning has moved out of the area. Therefore, the warning has been cancelled. A Tornado Watch remains in effect until 700 PM EDT for western and central Massachusetts. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service Boston/Norton. LAT...LON 4218 7224 4229 7226 4241 7191 4220 7184 TIME...MOT...LOC 2150Z 260DEG 32KT 4226 7183 $$ CB
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 2:22 AM EDT | Gale Warning | BOX | 20 hr | |
| Jun 18, 3:00 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 60 min |
| Jun 18, 4:05 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Middlesex, Worcester | 55 min |
| Jun 18, 5:23 PM EDT | Tornado Warning | BOX | Middlesex, Worcester | 31 min |
| Jun 18, 5:55 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Worcester | 21 min |
Nearby
Tornado Warnings in Massachusetts, 2026Every tornado warning in 2026Tornadoes in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.