Weather alerts in Massachusetts, December 2020

87 weather alerts in December 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in December 2020. Tap one for its archive.

Alerts: 87
Warnings: 29
Watches: 14
Advisories: 36
Busiest day: December 25, 202021 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Counties	Lasted
Nov 30, 7:13 PM EST	Mesoscale Discussion	SPC	Bristol, Dukes, Hampden, Norfolk, Plymouth, Suffolk and 1 more	2 hr
Nov 30, 10:15 PM EST	Wind Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 1 more	6 hr
Dec 1, 4:20 AM EST	Small Craft Advisory	BOX		60 hr
Dec 3, 3:39 PM EST	Winter Storm Watch	ALY	Berkshire	24 hr
Dec 3, 3:52 PM EST	Gale Watch	BOX		13 hr
Dec 3, 3:52 PM EST	Winter Storm Watch	BOX	Essex, Franklin, Hampden, Hampshire, Middlesex, Worcester	35 hr
Dec 4, 3:44 AM EST	High Wind Watch	BOX	Barnstable, Dukes, Nantucket, Norfolk, Plymouth	11 hr
Dec 4, 4:22 AM EST	Gale Warning	BOX		59 hr
Dec 4, 3:02 PM EST	Winter Storm Warning	BOX	Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk and 2 more	29 hr
Dec 4, 3:07 PM EST	High Wind Warning	BOX	Barnstable, Dukes, Essex, Nantucket, Norfolk, Plymouth	33 hr
Dec 4, 3:08 PM EST	Storm Warning	BOX		33 hr
Dec 4, 3:29 PM EST	Winter Weather Advisory	ALY	Berkshire	28 hr
Dec 5, 2:48 AM EST	Winter Weather Advisory	BOX	Bristol, Franklin, Hampden, Hampshire, Norfolk, Plymouth	17 hr
Dec 5, 2:52 AM EST	Wind Advisory	BOX	Bristol, Middlesex, Norfolk, Plymouth, Suffolk	21 hr
Dec 5, 7:52 AM EST	Mesoscale Discussion	SPC	Franklin, Hampden, Hampshire, Worcester	4 hr
Dec 5, 11:58 PM EST	Wind Advisory	BOX	Barnstable, Dukes, Essex, Nantucket, Norfolk, Plymouth	5 hr
Dec 6, 7:01 AM EST	Small Craft Advisory	BOX		32 hr
Dec 7, 2:51 PM EST	Small Craft Advisory	BOX		3 days
Dec 9, 4:28 AM EST	Small Craft Advisory	BOX		11 hr
Dec 9, 3:34 PM EST	Small Craft Advisory	BOX		27 hr
Dec 10, 4:01 AM EST	Small Craft Advisory	BOX		15 hr
Dec 10, 9:21 AM EST	Small Craft Advisory	BOX		8 hr
Dec 11, 3:38 AM EST	Small Craft Advisory	BOX		21 hr
Dec 12, 3:21 PM EST	Small Craft Advisory	BOX		37 hr
Dec 12, 6:46 PM EST	Dense Fog Advisory	BOX	Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk and 2 more	15 hr
Dec 13, 3:15 PM EST	Coastal Flood Statement	BOX	Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk	22 hr
Dec 14, 4:03 AM EST	Gale Watch	BOX		12 hr
Dec 14, 3:40 PM EST	Winter Storm Watch	ALY	Berkshire	24 hr
Dec 14, 3:45 PM EST	Winter Storm Watch	BOX	Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 6 more	36 hr
Dec 14, 3:50 PM EST	Gale Warning	BOX		18 hr
Dec 14, 3:50 PM EST	Small Craft Advisory	BOX		24 hr
Dec 15, 3:14 AM EST	Gale Watch	BOX		12 hr
Dec 15, 3:14 PM EST	Winter Storm Warning	BOX	Barnstable, Bristol, Essex, Franklin, Hampden, Hampshire and 5 more	46 hr
Dec 15, 3:26 PM EST	Coastal Flood Advisory	BOX	Barnstable, Dukes, Essex, Nantucket, Norfolk, Plymouth and 1 more	49 hr
Dec 15, 3:28 PM EST	Gale Warning	BOX		56 hr
Dec 15, 3:54 PM EST	Winter Storm Warning	ALY	Berkshire	45 hr
Dec 16, 3:39 AM EST	Winter Weather Advisory	BOX	Barnstable, Dukes	33 hr
Dec 16, 9:31 AM EST	High Wind Warning	BOX	Dukes, Nantucket	24 hr
Dec 16, 9:32 AM EST	Storm Warning	BOX		26 hr
Dec 16, 6:48 PM EST	Mesoscale Discussion	SPC	Berkshire, Hampden	5 hr
Dec 16, 10:12 PM EST	Mesoscale Discussion	SPC	Berkshire, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more	6 hr
Dec 17, 4:15 PM EST	Small Craft Advisory	BOX		56 hr
Dec 17, 11:47 PM EST	Winter Weather Advisory	BOX	Barnstable, Dukes, Nantucket, Norfolk, Plymouth	12 hr
Dec 18, 12:39 PM EST	Coastal Flood Statement	BOX	Nantucket	4 hr
Dec 20, 9:46 AM EST	Small Craft Advisory	BOX		9 hr
Dec 21, 12:21 AM EST	Dense Fog Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 7 more	7 hr
Dec 21, 2:54 AM EST	Small Craft Advisory	BOX		60 hr
Dec 22, 3:06 PM EST	Flood Watch	ALY	Berkshire	3 days
Dec 22, 3:28 PM EST	High Wind Watch	BOX	Barnstable, Bristol, Dukes, Essex, Middlesex, Nantucket and 4 more	23 hr
Dec 22, 3:37 PM EST	Storm Watch	BOX		23 hr
Dec 23, 3:35 AM EST	High Wind Watch	ALY	Berkshire	12 hr
Dec 23, 2:05 PM EST	Flood Watch	BOX	Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 7 more	51 hr
Dec 23, 2:30 PM EST	High Wind Warning	BOX	Barnstable, Bristol, Dukes, Essex, Middlesex, Nantucket and 4 more	45 hr
Dec 23, 2:30 PM EST	Wind Advisory	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	44 hr
Dec 23, 2:35 PM EST	Storm Warning	BOX		45 hr
Dec 23, 3:18 PM EST	High Wind Warning	ALY	Berkshire	43 hr
Dec 24, 1:03 PM EST	River Flood Warning	ALY	Berkshire	38 hr
Dec 24, 1:45 PM EST	Coastal Flood Advisory	BOX	Bristol, Plymouth	19 hr
Dec 25, 5:51 AM EST	Areal Flood Advisory	ALY	Berkshire	4 hr
Dec 25, 7:18 AM EST	Areal Flood Advisory	ALY	Berkshire	5 hr
Dec 25, 8:19 AM EST	Special Weather Statement	BOX	Barnstable, Bristol, Middlesex, Norfolk, Plymouth, Suffolk	56 min
Dec 25, 8:34 AM EST	Areal Flood Warning	BOX	Franklin, Worcester	10 hr
Dec 25, 8:49 AM EST	Areal Flood Warning	BOX	Bristol, Norfolk	5 hr
Dec 25, 9:21 AM EST	Areal Flood Advisory	ALY	Berkshire	4 hr
Dec 25, 9:43 AM EST	Special Weather Statement	BOX	Barnstable, Dukes, Plymouth	62 min
Dec 25, 10:02 AM EST	Gale Warning	BOX		5 hr
Dec 25, 10:03 AM EST	Wind Advisory	BOX	Essex, Middlesex, Worcester	95 min
Dec 25, 11:36 AM EST	Small Craft Advisory	BOX		49 hr
Dec 25, 11:38 AM EST	Wind Advisory	BOX	Barnstable, Dukes, Nantucket	80 min
Dec 25, 11:40 AM EST	Areal Flood Warning	BOX	Hampshire	5 hr
Dec 25, 12:41 PM EST	River Flood Warning	BOX	Hampden, Hampshire	24 hr
Dec 25, 12:41 PM EST	River Flood Warning	BOX	Franklin, Hampshire	17 hr
Dec 25, 12:41 PM EST	River Flood Warning	BOX	Middlesex, Worcester	24 hr
Dec 25, 12:41 PM EST	River Flood Warning	BOX	Hampden	47 hr
Dec 25, 12:41 PM EST	River Flood Warning	BOX	Worcester	16 hr
Dec 25, 12:58 PM EST	Areal Flood Warning	BOX	Hampden	4 hr
Dec 25, 1:37 PM EST	Areal Flood Warning	BOX	Bristol, Norfolk	5 hr
Dec 25, 2:26 PM EST	Areal Flood Warning	BOX	Norfolk, Suffolk	4 hr
Dec 25, 2:26 PM EST	Areal Flood Warning	BOX	Middlesex	4 hr
Dec 27, 2:55 PM EST	Gale Watch	BOX		13 hr
Dec 27, 2:55 PM EST	Small Craft Advisory	BOX		60 hr
Dec 28, 4:05 AM EST	Gale Warning	BOX		40 hr
Dec 30, 2:33 AM EST	Gale Warning	BOX		30 hr
Dec 30, 2:33 AM EST	Small Craft Advisory	BOX		30 hr
Dec 30, 3:20 AM EST	Winter Weather Advisory	BOX	Franklin, Hampden, Hampshire	25 hr
Dec 30, 3:24 AM EST	Winter Weather Advisory	ALY	Berkshire	24 hr
Dec 31, 8:37 AM EST	Small Craft Advisory	BOX		19 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Mesoscale Discussion	4
Special Weather Statement	2
Flooding
Areal Flood Warning	7
River Flood Warning	6
Flood Watch	2
Areal Flood Advisory	3
Winter
Winter Storm Warning	3
Winter Storm Watch	4
Winter Weather Advisory	6
Wind and dust
High Wind Warning	4
High Wind Watch	3
Wind Advisory	6
Fog and smoke
Dense Fog Advisory	2
Coast and beach
Coastal Flood Advisory	2
Coastal Flood Statement	2
Marine
Gale Warning	6
Storm Warning	3
Gale Watch	4
Storm Watch	1
Small Craft Advisory	17

By county

Every county with at least one alert. A county page lists each alert that covered it.

Nearby

Alerts in force now Tornadoes on record The radar archive 2019 2021

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.