Alert archive / Massachusetts / Tornado Warnings in 2023
Tornado Warning 8, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this tornado warning at Aug 8, 2023, 8:58 AM EDT for Middlesex County, Worcester County, Massachusetts. It was in force for 32 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
- Aug 8, 2023, 8:58 AM EDT (12:58 UTC)
- Expired
- Aug 8, 2023, 9:30 AM EDT
- In force
- 32 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 50 km from the middle of the area, began a volume at 13:02 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 nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 1.0 hours before the alert went out and 179 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
- 331 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 680 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
039
WFUS51 KBOX 081258
TORBOX
MAC017-027-081330-
/O.NEW.KBOX.TO.W.0008.230808T1258Z-230808T1330Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
858 AM EDT Tue Aug 8 2023
The National Weather Service in Boston/Norton has issued a
* Tornado Warning for...
Southeastern Worcester County in central Massachusetts...
South central Middlesex County in northeastern Massachusetts...
* Until 930 AM EDT.
* At 858 AM EDT, a severe thunderstorm capable of producing a
tornado was located near Sutton, or 11 miles south of Worcester,
moving northeast at 25 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, Westborough, Grafton, Auburn, Northbridge,
Oxford, Millbury, Sutton, and Upton around 905 AM EDT.
Hopkinton around 910 AM EDT.
Milford around 915 AM 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 7143 4205 7180 4209 7189 4239 7171
TIME...MOT...LOC 1257Z 217DEG 21KT 4210 7180
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
BL2 follow-up statements
083
WWUS51 KBOX 081310
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
910 AM EDT Tue Aug 8 2023
MAC017-027-081330-
/O.CON.KBOX.TO.W.0008.000000T0000Z-230808T1330Z/
Worcester MA-Middlesex MA-
910 AM EDT Tue Aug 8 2023
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM EDT FOR
SOUTHEASTERN WORCESTER AND SOUTH CENTRAL MIDDLESEX COUNTIES...
At 910 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Sutton, or 8 miles south of Shrewsbury, moving
northeast at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Worcester, Shrewsbury, Milford, Westborough, Grafton, Northbridge,
Hopkinton, Northborough, Millbury, and Sutton around 915 AM EDT.
Ashland and Southborough around 920 AM EDT.
Marlborough and Boylston around 925 AM EDT.
Holliston around 930 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4223 7143 4210 7173 4215 7180 4239 7171
TIME...MOT...LOC 1310Z 226DEG 21KT 4215 7173
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
BL347
WWUS51 KBOX 081322
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
922 AM EDT Tue Aug 8 2023
MAC017-027-081332-
/O.EXP.KBOX.TO.W.0008.000000T0000Z-230808T1330Z/
Worcester MA-Middlesex MA-
922 AM EDT Tue Aug 8 2023
...THE TORNADO WARNING FOR SOUTHEASTERN WORCESTER AND SOUTH CENTRAL
MIDDLESEX COUNTIES WILL EXPIRE AT 930 AM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
LAT...LON 4223 7143 4210 7173 4215 7180 4239 7171
TIME...MOT...LOC 1322Z 217DEG 21KT 4221 7167
$$
BLThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 3:10 AM EDT | Flood Watch | BOX | Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more | 15 hr |
| Aug 8, 6:37 AM EDT | Special Weather Statement | BOX | Essex | 23 min |
| Aug 8, 6:58 AM EDT | Special Weather Statement | BOX | Middlesex | 47 min |
| Aug 8, 7:37 AM EDT | Special Weather Statement | BOX | Essex | 38 min |
| Aug 8, 8:09 AM EDT | Special Weather Statement | BOX | Middlesex | 66 min |
| Aug 8, 8:25 AM EDT | Special Marine Warning | BOX | 65 min | |
| Aug 8, 9:16 AM EDT | Areal Flood Warning | BOX | Essex, Middlesex, Norfolk, Worcester | 4 hr |
| Aug 8, 9:17 AM EDT | Severe Thunderstorm Warning | BOX | Bristol, Plymouth | 58 min |
| Aug 8, 9:19 AM EDT | Special Marine Warning | BOX | 56 min | |
| Aug 8, 9:28 AM EDT | Special Marine Warning | BOX | 62 min | |
| Aug 8, 9:29 AM EDT | Special Weather Statement | BOX | Essex | 61 min |
| Aug 8, 10:01 AM EDT | Special Weather Statement | BOX | Essex, Middlesex, Norfolk, Suffolk | 44 min |
| Aug 8, 10:07 AM EDT | Severe Thunderstorm Warning | BOX | Bristol, Plymouth | 53 min |
| Aug 8, 10:12 AM EDT | Special Marine Warning | BOX | 63 min | |
| Aug 8, 10:21 AM EDT | Severe Thunderstorm Warning | BOX | Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk | 54 min |
| Aug 8, 10:28 AM EDT | Special Marine Warning | BOX | 62 min | |
| Aug 8, 10:47 AM EDT | Flash Flood Warning | BOX | Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more | 3 hr |
| Aug 8, 10:48 AM EDT | Severe Thunderstorm Warning | BOX | Barnstable, Bristol, Dukes, Plymouth | 57 min |
| Aug 8, 11:11 AM EDT | Special Marine Warning | BOX | 64 min | |
| Aug 8, 11:12 AM EDT | Special Weather Statement | BOX | Essex | 63 min |
| Aug 8, 11:13 AM EDT | Special Marine Warning | BOX | 62 min | |
| Aug 8, 11:18 AM EDT | Tornado Warning | BOX | Barnstable, Bristol, Plymouth | 27 min |
| Aug 8, 11:37 AM EDT | Severe Thunderstorm Warning | BOX | Barnstable, Dukes, Plymouth | 53 min |
| Aug 8, 11:52 AM EDT | Special Marine Warning | BOX | 53 min | |
| Aug 8, 11:53 AM EDT | Tornado Warning | BOX | Barnstable | 37 min |
| Aug 8, 12:06 PM EDT | River Flood Warning | BOX | Essex | 6 hr |
| Aug 8, 12:19 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable | 41 min |
| Aug 8, 12:39 PM EDT | Special Marine Warning | BOX | 66 min | |
| Aug 8, 1:37 PM EDT | Special Marine Warning | BOX | 53 min | |
| Aug 8, 2:27 PM EDT | Special Weather Statement | BOX | Middlesex | 33 min |
| Aug 8, 3:25 PM EDT | Special Weather Statement | BOX | Essex | 65 min |
| Aug 8, 3:38 PM EDT | Special Marine Warning | BOX | 67 min |
Nearby
Tornado Warnings in Massachusetts, 2023Every tornado warning in 2023Tornadoes in 2023
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.