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 Apr 21, 2021, 3:25 PM EDT for Franklin County, Massachusetts. It was in force for 50 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
- Apr 21, 2021, 3:25 PM EDT (19:25 UTC)
- Expired
- Apr 21, 2021, 4:15 PM EDT
- In force
- 50 min
- Issued by
- NWS Boston/Norton, MA
County Franklin County, MA
The radar
The Albany radar (KENX), 96 km from the middle of the area, began a volume at 19:28 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
Albany, NY (KALY), launched 12:00Z, 7.4 hours before the alert went out and 77 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
- 814 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 298 m²/s²
- 0-3 km storm-relative helicity
- 352 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
415
WWUS81 KBOX 211925
SPSBOX
Special Weather Statement
National Weather Service Boston/Norton MA
325 PM EDT Wed Apr 21 2021
MAZ002-003-008-212015-
Western Franklin MA-Western Hampshire MA-Eastern Franklin MA-
325 PM EDT Wed Apr 21 2021
...STRONG THUNDERSTORMS IN NORTHWEST MASSACHUSETTS...
At 324 PM EDT, Doppler radar was tracking a strong thunderstorm over
Hawley, or 12 miles southeast of North Adams, moving northeast at 30
mph.
Pea size hail and winds in excess of 40 mph will accompany this
storm. Some locations may see a small accumulation of hail.
Locations impacted include...
Bernardston, Buckland, Shelburne, Ashfield, Colrain, Charlemont,
Cummington, Leyden, Heath, Plainfield, Rowe and Hawley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.
&&
LAT...LON 4263 7295 4267 7296 4274 7289 4273 7251
4247 7293 4252 7297 4256 7298
TIME...MOT...LOC 1924Z 232DEG 25KT 4256 7293
$$
JWDThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 2:15 PM EDT | Special Weather Statement | BOX | Franklin, Hampden, Hampshire, Worcester | 90 min |
| Apr 21, 3:17 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 58 min |
| Apr 21, 4:11 PM EDT | Special Weather Statement | BOX | Worcester | 49 min |
| Apr 21, 4:13 PM EDT | Freeze Watch | BOX | Bristol, Norfolk, Plymouth | 24 hr |
| Apr 21, 4:42 PM EDT | Special Weather Statement | BOX | Worcester | 48 min |
| Apr 21, 5:26 PM EDT | Special Weather Statement | BOX | Essex, Norfolk, Suffolk | 49 min |
| Apr 21, 4:13 PM EDT | Freeze Warning | BOX | Kent, Providence | 14 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.