Alert archive / Massachusetts / Special Weather Statements in 2021
Special Weather Statement, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this special weather statement at Dec 6, 2021, 11:13 PM EST for Barnstable County, Massachusetts. It was in force for 47 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
- Dec 6, 2021, 11:13 PM EST (04:13 UTC)
- Expired
- Dec 7, 2021, 12:00 AM EST
- In force
- 47 min
- Issued by
- NWS Boston/Norton, MA
- Hail
- 0.00 in
- Wind
- 50
County Barnstable County, MA
The radar
The Boston radar (KBOX), 65 km from the middle of the area, began a volume at 04:16 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 00:00Z, 4.2 hours before the alert went out and 228 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 295 m²/s²
- 0-3 km storm-relative helicity
- 405 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
853
WWUS81 KBOX 070413
SPSBOX
Special Weather Statement
National Weather Service Boston/Norton MA
1113 PM EST Mon Dec 6 2021
MAZ019>023-070500-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Dukes MA-Barnstable MA-
1113 PM EST Mon Dec 6 2021
...Strong thunderstorms will impact portions of north central Dukes,
Barnstable, southeastern Plymouth and southeastern Bristol Counties
through MIDNIGHT EST...
At 1113 PM EST, Doppler radar was tracking a line of heavy showers
and strong wind gusts along a line extending from near Provincetown
to Dartmouth. Movement was east at 65 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Strong winds could cause minor damage such as downed
branches.
Locations impacted include...
New Bedford, Plymouth, Barnstable, Dartmouth, Falmouth, Brewster,
Marion, Provincetown, Yarmouth, Wareham, Sandwich, Bourne, Fairhaven,
Dennis, Mashpee, Harwich, Chatham, Mattapoisett, Orleans and
Wellfleet.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get indoors when you hear thunder. Do not resume outdoor activities
until at least 30 minutes after the storm has passed.
&&
LAT...LON 4154 7000 4167 7002 4149 7075 4150 7075
4168 7062 4168 7066 4172 7062 4175 7063
4150 7104 4191 7055 4182 7054 4181 7053
4172 7027 4179 7002 4203 7009 4207 7024
4207 7022 4202 7003
TIME...MOT...LOC 0413Z 266DEG 56KT 4213 7023 4154 7096
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
$$
RMThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 9:02 PM EST | Special Weather Statement | BOX | Hampden, Middlesex, Worcester | 58 min |
| Dec 6, 9:37 PM EST | Special Weather Statement | BOX | Essex, Middlesex, Norfolk | 53 min |
| Dec 6, 10:06 PM EST | Special Weather Statement | BOX | Bristol, Norfolk, Plymouth, Suffolk | 54 min |
| Dec 6, 10:42 PM EST | Special Weather Statement | BOX | Bristol, Plymouth | 48 min |
| Dec 7, 12:56 AM EST | Small Craft Advisory | BOX | 26 hr |
Nearby
Special Weather Statements in Massachusetts, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.