Alert archive / Massachusetts / Winter Storm Watches in 2021
Winter Storm Watch 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this winter storm watch at Jan 30, 2021, 3:28 PM EST for 10 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Feb 1, 2021, 7:00 AM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 30, 2021, 3:28 PM EST (20:28 UTC)
- In effect from
- Feb 1, 2021, 7:00 AM EST
- Expired
- Jan 31, 2021, 3:37 PM EST
- In force
- Issued by
- NWS Boston/Norton, MA
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Bristol County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 43 km from the middle of the area, began a volume at 20:30 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 nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 8.5 hours before the alert went out and 145 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
- 682 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
429 WWUS41 KBOX 302028 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 328 PM EST Sat Jan 30 2021 CTZ002>004-MAZ002>017-026-RIZ001>006-310830- /O.NEW.KBOX.WS.A.0002.210201T1200Z-210202T1800Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Bristol MA- Northern Middlesex MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Gloucester, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, Ayer, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, and Westerly 328 PM EST Sat Jan 30 2021 ...WINTER STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 12 inches possible. Winds could gust as high as 35 mph. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern and western Massachusetts and northern and southern Rhode Island. This also includes the cities of Boston, Providence, Hartford and Worcester. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Nocera/Williams
4 follow-up statements
235 WWUS41 KBOX 310327 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 1027 PM EST Sat Jan 30 2021 CTZ002>004-MAZ002>017-026-RIZ001>006-311130- /O.CON.KBOX.WS.A.0002.210201T1200Z-210202T1800Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Bristol MA- Northern Middlesex MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Gloucester, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Cambridge, Boston, Quincy, Taunton, Ayer, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, and Westerly 1027 PM EST Sat Jan 30 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 12 inches possible. Winds could gust as high as 35 mph. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern and western Massachusetts and northern and southern Rhode Island. This also includes the cities of Boston, Providence, Hartford and Worcester. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
198 WWUS41 KBOX 310847 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 347 AM EST Sun Jan 31 2021 MAZ018>021-RIZ007-311700- /O.EXB.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA- Southern Plymouth MA-Newport RI- Including the cities of Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, and Newport 347 AM EST Sun Jan 31 2021 ...WINTER STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 8 inches possible. Winds could gust as high as 50 mph. * WHERE...In Massachusetts, Western Plymouth MA, Eastern Plymouth MA, Southern Bristol MA and Southern Plymouth MA Counties. In Rhode Island, Newport RI County. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ CTZ002>004-MAZ002>016-026-RIZ001-311700- /O.EXT.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Middlesex MA- Northwest Providence RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Gloucester, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Cambridge, Boston, Quincy, Ayer, Foster, and Smithfield 347 AM EST Sun Jan 31 2021 ...WINTER STORM WATCH NOW IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 14 inches possible. Winds could gust as high as 35 mph. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern and western Massachusetts and northern and southern Rhode Island. This also includes the cities of Boston, Providence, Hartford and Worcester. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MAZ017-RIZ002>006-311700- /O.EXT.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ Northern Bristol MA-Southeast Providence RI-Western Kent RI- Eastern Kent RI-Bristol RI-Washington RI- Including the cities of Taunton, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, and Westerly 347 AM EST Sun Jan 31 2021 ...WINTER STORM WATCH NOW IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 12 inches possible. Winds could gust as high as 35 mph. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern and western Massachusetts and northern and southern Rhode Island. This also includes the cities of Boston, Providence, Hartford and Worcester. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
947 WWUS41 KBOX 311516 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 1016 AM EST Sun Jan 31 2021 CTZ002>004-MAZ002>016-026-RIZ001-312200- /O.CON.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Middlesex MA- Northwest Providence RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Gloucester, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Cambridge, Boston, Quincy, Ayer, Foster, and Smithfield 1016 AM EST Sun Jan 31 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 14 inches possible. Winds could gust as high as 35 mph. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern and western Massachusetts and northern and southern Rhode Island. This also includes the cities of Boston, Providence, Hartford and Worcester. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ MAZ017>021-RIZ002>007-312200- /O.CON.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Southeast Providence RI- Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI- Newport RI- Including the cities of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, and Newport 1016 AM EST Sun Jan 31 2021 ...WINTER STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 4 to 8 inches possible. Winds could gust as high as 50 mph. * WHERE...In Massachusetts, Western Plymouth MA, Eastern Plymouth MA, Southern Bristol MA and Southern Plymouth MA Counties. In Rhode Island, Newport RI County. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions will likely impact the evening commute Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
839 WWUS41 KBOX 312037 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 337 PM EST Sun Jan 31 2021 CTZ002>004-MAZ002>016-026-RIZ001-011000- /O.UPG.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ /O.NEW.KBOX.WS.W.0002.210201T1200Z-210202T1000Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Middlesex MA- Northwest Providence RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Gloucester, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Cambridge, Boston, Quincy, Ayer, Foster, and Smithfield 337 PM EST Sun Jan 31 2021 ...WINTER STORM WARNING IN EFFECT FROM 7 AM MONDAY TO 5 AM EST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 7 to 15 inches. Winds gusting as high as 45 mph. Highest totals will be across the Worcester Hills and the east slopes of the Berkshires. * WHERE...Portions of northern Connecticut, central, eastern, northeastern and western Massachusetts and northern Rhode Island. * WHEN...From 7 AM Monday to 5 AM EST Tuesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...snow will be heavy and wet across Rhode Island and Eastern Massachusetts. This may increase the risk for power outages, in addition to the gusty northeast winds. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. && $$ MAZ017>021-RIZ002>007-011000- /O.UPG.KBOX.WS.A.0002.210201T1200Z-210202T2100Z/ /O.NEW.KBOX.WS.W.0002.210201T1200Z-210202T0600Z/ Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Southeast Providence RI- Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI- Newport RI- Including the cities of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, and Newport 337 PM EST Sun Jan 31 2021 ...WINTER STORM WARNING IN EFFECT FROM 7 AM MONDAY TO 1 AM EST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 6 to 12 inches. Winds gusting as high as 50 mph. * WHERE...Portions of southeastern Massachusetts and northern and southern Rhode Island. * WHEN...From 7 AM Monday to 1 AM EST Tuesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the morning or evening commute. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...snow will be heavy and wet across Rhode Island and Eastern Massachusetts. This may increase the risk for power outages, in addition to the gusty northeast winds. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. && $$
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 10:18 PM EST | Small Craft Advisory | BOX | 41 hr | |
| Jan 30, 3:51 AM EST | Gale Watch | BOX | 36 hr |
Nearby
Winter Storm Watches in Massachusetts, 2021Winter Storm Watches in Rhode Island, 2021Winter Storm Watches in Connecticut, 2021Every winter storm watch 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.