Alert archive / Massachusetts / Winter Storm Watches in 2021
Winter Storm Watch 4, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this winter storm watch at Feb 14, 2021, 3:31 PM EST for 7 counties in Massachusetts; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Kent County, Providence County, Rhode Island. It took effect at Feb 15, 2021, 1:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 14, 2021, 3:31 PM EST (20:31 UTC)
- In effect from
- Feb 15, 2021, 1:00 PM EST
- Expired
- Feb 15, 2021, 3:54 AM EST
- In force
- Issued by
- NWS Boston/Norton, MA
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Worcester County, MA, Kent County, RI, Providence County, RI
The radar
The Boston radar (KBOX), 68 km from the middle of the area, began a volume at 20:35 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, 8.5 hours before the alert went out and 166 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 470 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
746 WWUS41 KBOX 142031 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 331 PM EST Sun Feb 14 2021 CTZ002>004-MAZ002>006-008>013-026-RIZ001-003-150845- /O.NEW.KBOX.WS.A.0004.210215T1800Z-210217T0000Z/ Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Western Hampshire MA-Western Hampden MA- Eastern Hampshire MA-Eastern Hampden MA-Southern Worcester MA- Western Norfolk MA-Northern Middlesex MA-Northwest Providence RI- Western Kent RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Charlemont, Greenfield, Orange, Barre, Fitchburg, Framingham, Lowell, Lawrence, Chesterfield, Blandford, Amherst, Northampton, Springfield, Milford, Worcester, Foxborough, Norwood, Ayer, Foster, Smithfield, Coventry, and West Greenwich 331 PM EST Sun Feb 14 2021 ...WINTER STORM WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY EVENING... * WHAT...Heavy mixed precipitation possible. Total snow accumulations of up to three inches and ice accumulations of up to half an inch possible. * WHERE...Portions of northern Connecticut, central, eastern, northeastern and western Massachusetts and northern Rhode Island. * WHEN...From Monday afternoon through Tuesday evening. * IMPACTS...Power outages and tree damage are likely due to the ice. Travel could be extremely difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$
1 follow-up statement
327 WWUS41 KBOX 150854 WSWBOX URGENT - WINTER WEATHER MESSAGE National Weather Service Boston/Norton MA 354 AM EST Mon Feb 15 2021 MAZ005-006-013-RIZ001-003-151700- /O.UPG.KBOX.WS.A.0004.210215T1800Z-210217T0000Z/ /O.NEW.KBOX.WW.Y.0011.210216T0000Z-210216T1200Z/ Central Middlesex MA-Western Essex MA-Western Norfolk MA- Northwest Providence RI-Western Kent RI- Including the cities of Framingham, Lowell, Lawrence, Foxborough, Norwood, Foster, Smithfield, Coventry, and West Greenwich 354 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM EST TUESDAY... * WHAT...Mixed precipitation expected. Total combined snow and sleet accumulations of up to one inch and ice accumulations of up to one tenth of an inch. * WHERE...In Massachusetts, Central Middlesex MA, Western Essex MA and Western Norfolk MA Counties. In Rhode Island, Northwest Providence RI and Western Kent RI Counties. * WHEN...From 7 PM this evening to 7 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact Monday overnight travel and the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ CTZ002>004-MAZ010-011-151700- /O.UPG.KBOX.WS.A.0004.210215T1800Z-210217T0000Z/ /O.NEW.KBOX.WW.Y.0011.210216T0000Z-210216T1500Z/ Hartford CT-Tolland CT-Windham CT-Eastern Hampshire MA- Eastern Hampden MA- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Amherst, Northampton, and Springfield 354 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST TUESDAY... * WHAT...Mixed precipitation expected. Total combined snow and sleet accumulations of up to one inch and ice accumulations of up to two tenths of an inch. * WHERE...Northern Connecticut and Eastern Hampshire and Eastern Hampden Counties in Massachusetts. * WHEN...From 7 PM this evening to 10 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact Monday overnight travel and the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ MAZ002>004-008-009-012-026-151700- /O.UPG.KBOX.WS.A.0004.210215T1800Z-210217T0000Z/ /O.NEW.KBOX.WW.Y.0011.210216T0000Z-210216T2300Z/ Western Franklin MA-Eastern Franklin MA-Northern Worcester MA- Western Hampshire MA-Western Hampden MA-Southern Worcester MA- Northern Middlesex MA- Including the cities of Charlemont, Greenfield, Orange, Barre, Fitchburg, Chesterfield, Blandford, Milford, Worcester, and Ayer 354 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 6 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total combined snow and sleet accumulations of up to one inch and ice accumulations of up to one tenth in the lower elevations and up to one-third of an inch in the higher terrain. * WHERE...The eastern slopes of the Berkshires, Worcester County and northern Middlesex Counties in Massachusetts. * WHEN...From 7 PM this evening to 6 PM EST Tuesday. * IMPACTS...Tree and powerline damage is possible due to the ice. Plan on slippery road conditions. The hazardous conditions could impact Monday overnight travel, as well as the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...The highest ice accretions are expected across the higher terrain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ MAZ007-014>018-RIZ002-004>006-151700- /O.NEW.KBOX.WW.Y.0011.210216T0000Z-210216T1200Z/ Eastern Essex MA-Southeast Middlesex MA-Suffolk MA- Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA- Southeast Providence RI-Eastern Kent RI-Bristol RI-Washington RI- Including the cities of Gloucester, Cambridge, Boston, Quincy, Taunton, Brockton, Providence, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, and Westerly 354 AM EST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 7 AM EST TUESDAY... * WHAT...Mixed precipitation expected. Total combined snow and sleet accumulations of up to one inch and ice accumulations of a light glaze. * WHERE...The North Shore, western suburbs of Greater Boston, Northern Bristol and Plymouth Counties in Massachusetts, and eastern and southern Rhode Island. * WHEN...From 7 PM this evening to 7 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact Monday overnight travel and the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. && $$ Loconto
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 14, 3:31 PM EST | Gale Watch | BOX | 24 hr |
Nearby
Winter Storm Watches in Massachusetts, 2021Winter Storm Watches in Connecticut, 2021Winter Storm Watches in Rhode Island, 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.