Alert archive / Massachusetts / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in Massachusetts, 2021

151 severe thunderstorm warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Severe Thunderstorm Warnings: 151
Busiest month: July67 severe thunderstorm warnings
Busiest day: June 30, 202118 severe thunderstorm warnings

Over time

By month

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
Apr 21, 3:17 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	58 min
May 26, 4:23 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	37 min
May 26, 4:57 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	48 min
May 26, 5:47 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire, Worcester	58 min
May 26, 5:54 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	66 min
May 26, 6:13 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Middlesex, Worcester	62 min
May 26, 6:39 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	66 min
May 26, 7:05 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	55 min
May 26, 7:45 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Worcester	60 min
May 26, 9:37 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk	38 min
Jun 8, 1:34 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	41 min
Jun 8, 2:56 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	43 min
Jun 8, 5:17 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Worcester	58 min
Jun 8, 5:59 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth, Suffolk	35 min
Jun 15, 5:13 PM EDT	Severe Thunderstorm Warning	BOX	Essex	62 min
Jun 15, 5:28 PM EDT	Severe Thunderstorm Warning	BOX	Essex	32 min
Jun 19, 4:35 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	55 min
Jun 22, 1:52 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	38 min
Jun 22, 2:00 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth, Suffolk	45 min
Jun 22, 3:06 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	23 min
Jun 29, 4:42 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	63 min
Jun 29, 5:15 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	60 min
Jun 29, 6:11 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Worcester	64 min
Jun 29, 6:59 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	44 min
Jun 29, 7:34 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	56 min
Jun 30, 3:35 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	40 min
Jun 30, 3:48 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	14 min
Jun 30, 3:48 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	57 min
Jun 30, 4:01 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	27 min
Jun 30, 4:03 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	57 min
Jun 30, 4:09 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	21 min
Jun 30, 4:32 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Middlesex, Worcester	58 min
Jun 30, 4:39 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	66 min
Jun 30, 5:00 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	30 min
Jun 30, 5:13 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	62 min
Jun 30, 5:25 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	49 min
Jun 30, 5:29 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	44 min
Jun 30, 5:34 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	56 min
Jun 30, 5:43 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	51 min
Jun 30, 5:54 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Suffolk, Worcester	53 min
Jun 30, 6:12 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Plymouth, Suffolk, Worcester	47 min
Jun 30, 6:45 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	60 min
Jun 30, 7:15 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	60 min
Jun 30, 8:08 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Worcester	67 min
Jun 30, 8:14 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Plymouth, Suffolk	46 min
Jun 30, 8:31 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth	59 min
Jul 6, 3:12 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	63 min
Jul 6, 3:15 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	60 min
Jul 6, 3:49 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	56 min
Jul 6, 3:49 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire, Worcester	56 min
Jul 6, 4:13 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	49 min
Jul 6, 4:13 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	40 min
Jul 6, 4:20 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	55 min
Jul 6, 4:43 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	62 min
Jul 6, 4:51 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	33 min
Jul 6, 5:13 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Suffolk, Worcester	62 min
Jul 6, 5:21 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Worcester	42 min
Jul 6, 5:52 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Worcester	53 min
Jul 6, 6:13 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Suffolk	31 min
Jul 7, 3:27 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	13 min
Jul 7, 3:38 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	67 min
Jul 7, 4:00 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	15 min
Jul 7, 4:00 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	60 min
Jul 7, 4:01 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	59 min
Jul 7, 4:16 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	59 min
Jul 7, 4:33 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	57 min
Jul 7, 5:21 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Worcester	54 min
Jul 7, 5:23 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	49 min
Jul 7, 5:30 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	60 min
Jul 7, 6:17 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Worcester	58 min
Jul 7, 6:18 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	36 min
Jul 7, 6:48 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	27 min
Jul 7, 6:59 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Suffolk	61 min
Jul 7, 7:47 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Plymouth	25 min
Jul 14, 3:09 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	66 min
Jul 14, 4:53 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	52 min
Jul 14, 5:30 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire, Worcester	45 min
Jul 14, 6:05 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	40 min
Jul 14, 6:38 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	52 min
Jul 14, 7:46 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	26 min
Jul 16, 3:04 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Worcester	56 min
Jul 16, 4:36 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Worcester	35 min
Jul 16, 5:05 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	55 min
Jul 16, 5:47 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester	33 min
Jul 17, 2:53 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk	52 min
Jul 17, 4:05 PM EDT	Severe Thunderstorm Warning	BOX	Worcester	34 min
Jul 17, 4:15 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	60 min
Jul 17, 4:34 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	36 min
Jul 17, 4:38 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	67 min
Jul 17, 5:10 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	65 min
Jul 17, 5:25 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	65 min
Jul 17, 6:05 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	26 min
Jul 20, 9:38 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	52 min
Jul 20, 9:46 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	59 min
Jul 20, 9:53 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	52 min
Jul 21, 8:30 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Plymouth, Suffolk	30 min
Jul 23, 3:28 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Suffolk	47 min
Jul 23, 4:57 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	63 min
Jul 23, 6:09 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	26 min
Jul 23, 6:42 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth	48 min
Jul 23, 7:28 PM EDT	Severe Thunderstorm Warning	BOX	Plymouth	34 min
Jul 27, 4:30 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	43 min
Jul 27, 5:04 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	56 min
Jul 27, 5:19 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	41 min
Jul 27, 5:34 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	56 min
Jul 27, 6:33 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Plymouth, Suffolk, Worcester	57 min
Jul 27, 7:01 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	44 min
Jul 27, 7:26 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more	64 min
Jul 29, 8:03 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	57 min
Jul 29, 9:10 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	45 min
Aug 12, 3:29 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	61 min
Aug 12, 4:29 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	61 min
Aug 12, 5:02 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	58 min
Aug 12, 5:35 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Worcester	55 min
Aug 12, 5:51 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BOX	Franklin, Hampden, Hampshire, Worcester	39 min
Aug 12, 6:13 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Hampden, Middlesex, Norfolk, Worcester	62 min
Aug 14, 12:08 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Plymouth	27 min
Aug 19, 10:14 AM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	44 min
Aug 19, 11:36 AM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Suffolk, Worcester	54 min
Aug 19, 12:32 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Suffolk	58 min
Aug 19, 2:23 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex	37 min
Aug 27, 4:59 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	38 min
Sep 1, 4:52 PM EDT	Severe Thunderstorm Warning	BOX	Nantucket	38 min
Sep 8, 8:09 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	66 min
Sep 8, 8:31 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	59 min
Sep 8, 9:24 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	21 min
Sep 13, 3:14 AM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	31 min
Sep 13, 5:34 AM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	31 min
Sep 15, 4:31 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	59 min
Sep 15, 7:53 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Middlesex, Worcester	13 min
Sep 16, 6:38 AM EDT	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	53 min
Sep 16, 7:13 AM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Dukes, Plymouth	62 min
Sep 16, 7:36 AM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Dukes	54 min
Sep 24, 8:23 AM EDT	Severe Thunderstorm Warning	BOX	Hampshire, Worcester	15 min
Sep 24, 11:11 AM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	22 min
Sep 28, 9:29 AM EDT	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Suffolk, Worcester	61 min
Sep 28, 10:02 AM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Plymouth, Suffolk	43 min
Sep 28, 2:07 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Dukes, Plymouth	53 min
Oct 16, 5:53 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	23 min
Oct 16, 6:00 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	27 min
Oct 31, 2:26 AM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Dukes, Plymouth	31 min
Nov 13, 4:09 PM EST	Severe Thunderstorm Warning	BOX	Hampden	15 min
Nov 13, 5:01 PM EST	Severe Thunderstorm Warning	BOX	Worcester	26 min
Nov 13, 5:12 PM EST	Severe Thunderstorm Warning	BOX	Bristol, Plymouth	44 min
Nov 13, 5:17 PM EST	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Worcester	7 min
Nov 13, 5:26 PM EST	Severe Thunderstorm Warning	BOX	Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester	32 min
Nov 13, 5:45 PM EST	Severe Thunderstorm Warning	BOX	Barnstable, Dukes, Plymouth	60 min
Nov 13, 5:55 PM EST	Severe Thunderstorm Warning	BOX	Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk	25 min
Dec 11, 9:15 PM EST	Severe Thunderstorm Warning	ALY	Berkshire	60 min
Dec 11, 9:49 PM EST	Severe Thunderstorm Warning	ALY	Berkshire	45 min
Dec 11, 9:53 PM EST	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	52 min

By county

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2020 2022

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.