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 Jun 8, 2021, 4:02 PM EDT for Norfolk County, Massachusetts. It was in force for 43 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 8, 2021, 4:02 PM EDT (20:02 UTC)
- Expired
- Jun 8, 2021, 4:45 PM EDT
- In force
- 43 min
- Issued by
- NWS Boston/Norton, MA
County Norfolk County, MA
The radar
The Boston radar (KBOX), 13 km from the middle of the area, began a volume at 20:06 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, 8.0 hours before the alert went out and 193 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
- 740 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
585 WWUS81 KBOX 082002 SPSBOX Special Weather Statement National Weather Service Boston/Norton MA 402 PM EDT Tue Jun 8 2021 MAZ013-016>018-082045- Western Norfolk MA-Northern Bristol MA-Western Plymouth MA- Eastern Norfolk MA- 402 PM EDT Tue Jun 8 2021 ...STRONG THUNDERSTORMS DEVELOPING OVER NORFOLK COUNTY IN MASSACHUSETTS... At 401 PM EDT, Doppler radar was tracking a strong thunderstorm over Foxborough, or near North Attleborough, moving east at 15 mph. Pea size hail and winds in excess of 30 mph will accompany this storm. Locations impacted include... Brockton, Braintree, Randolph, Stoughton, Bridgewater, Walpole, Mansfield, Easton, Canton, Sharon, Foxborough, Abington, Whitman, East Bridgewater, Norfolk, Wrentham, Holbrook, Plainville, West Bridgewater and Avon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Get indoors when this storm approaches. Winds may be strong enough to produce minor damage, such as a few downed branches. Frequent lightning was occurring. Lightning can strike far away from the storm. Go inside a building or vehicle. Wait at least 30 minutes until after the storm has passed to resume outdoor activities. && LAT...LON 4201 7133 4211 7135 4220 7099 4200 7096 TIME...MOT...LOC 2001Z 258DEG 15KT 4206 7127 $$ Chai
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 12:35 PM EDT | Special Weather Statement | BOX | Hampshire | 40 min |
| Jun 8, 12:54 PM EDT | Flash Flood Watch | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 8 hr |
| Jun 8, 1:02 PM EDT | Flash Flood Warning | BOX | Hampshire | 55 min |
| Jun 8, 1:13 PM EDT | Special Weather Statement | BOX | Hampden | 47 min |
| Jun 8, 1:34 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 41 min |
| Jun 8, 1:39 PM EDT | Flash Flood Warning | BOX | Hampden, Hampshire | 67 min |
| Jun 8, 2:40 PM EDT | Special Weather Statement | BOX | Hampshire | 50 min |
| Jun 8, 2:56 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 43 min |
| Jun 8, 3:09 PM EDT | Special Weather Statement | BOX | Worcester | 51 min |
| Jun 8, 3:12 PM EDT | Special Weather Statement | BOX | Essex | 48 min |
| Jun 8, 3:32 PM EDT | Special Marine Warning | BOX | 43 min | |
| Jun 8, 3:37 PM EDT | Special Weather Statement | BOX | Hampshire | 38 min |
| Jun 8, 3:42 PM EDT | Special Weather Statement | BOX | Essex | 48 min |
| Jun 8, 3:51 PM EDT | Special Weather Statement | BOX | Hampshire | 39 min |
| Jun 8, 3:52 PM EDT | Special Marine Warning | BOX | 53 min | |
| Jun 8, 4:04 PM EDT | Special Weather Statement | BOX | Hampshire | 41 min |
| Jun 8, 4:13 PM EDT | Special Weather Statement | BOX | Essex | 47 min |
| Jun 8, 4:38 PM EDT | Special Marine Warning | BOX | 52 min | |
| Jun 8, 5:17 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Middlesex, Norfolk, Worcester | 58 min |
| Jun 8, 5:33 PM EDT | Special Marine Warning | BOX | 42 min | |
| Jun 8, 5:59 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Plymouth, Suffolk | 35 min |
| Jun 8, 4:52 PM EDT | Special Weather Statement | BOX | Providence | 38 min |
| Jun 8, 12:45 PM EDT | Special Weather Statement | BOX | 45 min | |
| Jun 8, 2:10 PM EDT | Special Weather Statement | BOX | 50 min | |
| Jun 8, 2:29 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 61 min |
| Jun 8, 3:24 PM EDT | Special Weather Statement | BOX | 51 min | |
| Jun 8, 3:28 PM EDT | Special Weather Statement | BOX | 47 min | |
| Jun 8, 4:13 PM EDT | Special Weather Statement | BOX | 47 min |
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.