Alert archive / Massachusetts / Middlesex County

Weather alerts in Middlesex County, Massachusetts, 2013

206 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Middlesex County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 206
Warnings: 47
Watches: 32
Advisories: 75
Busiest month: July50 alerts
Busiest day: July 23, 201314 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

0 of 3 tornado warnings covering Middlesex County in 2013 had a tornado report inside them.

Middlesex County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	13	9	31%	8	38%	26 min
Flash flood warnings	10	3	70%	6	33%	24 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Boston/Norton, MA: tornado warnings	12	0	100%	4	0%
NWS Boston/Norton, MA: severe thunderstorm warnings	91	48	47%	169	64%	23 min
NWS Boston/Norton, MA: flash flood warnings	61	23	62%	97	81%	66 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

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	Lasted
Jan 11, 3:56 AM EST	Freezing Rain Advisory	BOX	27 hr
Jan 12, 4:56 PM EST	Dense Fog Advisory	BOX	38 hr
Jan 13, 4:14 PM EST	Dense Fog Advisory	BOX	17 hr
Jan 15, 4:05 AM EST	Winter Weather Advisory	BOX	39 hr
Jan 16, 3:42 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 20, 3:57 AM EST	Wind Advisory	BOX	15 hr
Jan 20, 4:05 PM EST	Winter Storm Watch	BOX	24 hr
Jan 21, 4:11 AM EST	Winter Weather Advisory	BOX	26 hr
Jan 22, 4:02 AM EST	Wind Chill Advisory	BOX	30 hr
Jan 23, 10:35 AM EST	Wind Chill Advisory	BOX	23 hr
Jan 24, 9:55 AM EST	Wind Chill Advisory	BOX	24 hr
Jan 27, 3:59 PM EST	Winter Weather Advisory	BOX	36 hr
Jan 29, 4:26 AM EST	High Wind Watch	BOX	32 hr
Jan 29, 3:43 PM EST	Freezing Rain Advisory	BOX	9 hr
Jan 30, 4:53 AM EST	High Wind Warning	BOX	29 hr
Jan 30, 8:16 AM EST	Dense Fog Advisory	BOX	20 hr
Jan 31, 9:09 AM EST	Special Weather Statement	BOX	51 min
Jan 31, 9:19 AM EST	Wind Advisory	BOX	9 hr
Feb 6, 4:18 AM EST	Winter Storm Watch	BOX	36 hr
Feb 6, 3:19 PM EST	Blizzard Watch	BOX	25 hr
Feb 7, 3:55 PM EST	Blizzard Warning	BOX	47 hr
Feb 7, 3:55 PM EST	Winter Storm Warning	BOX	44 hr
Feb 8, 12:50 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 8, 4:51 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 8, 8:37 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 9, 4:07 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 9, 8:54 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 10, 4:07 PM EST	Winter Weather Advisory	BOX	21 hr
Feb 11, 4:08 PM EST	Dense Fog Advisory	BOX	10 hr
Feb 16, 3:52 AM EST	Winter Weather Advisory	BOX	33 hr
Feb 16, 4:46 PM EST	Wind Advisory	BOX	30 hr
Feb 22, 3:54 AM EST	Winter Storm Watch	BOX	24 hr
Feb 23, 3:45 AM EST	Winter Weather Advisory	BOX	44 hr
Feb 25, 4:37 PM EST	Winter Storm Watch	BOX	24 hr
Feb 26, 4:41 PM EST	Winter Weather Advisory	BOX	15 hr
Mar 5, 3:58 PM EST	Winter Storm Watch	BOX	24 hr
Mar 6, 4:20 PM EST	Winter Storm Warning	BOX	51 hr
Mar 6, 4:20 PM EST	Winter Weather Advisory	BOX	52 hr
Mar 6, 4:25 PM EST	Wind Advisory	BOX	46 hr
Mar 8, 8:25 AM EST	Mesoscale Discussion	SPC	4 hr
Mar 11, 3:17 PM EDT	Flood Watch	BOX	37 hr
Mar 17, 4:11 PM EDT	Winter Storm Watch	BOX	13 hr
Mar 18, 4:53 AM EDT	Winter Storm Warning	BOX	37 hr
Mar 19, 11:07 AM EDT	Winter Storm Warning	BOX	113 min
Apr 1, 3:00 PM EDT	Special Weather Statement	BOX	60 min
Apr 6, 4:42 AM EDT	Red Flag Warning	BOX	12 hr
Apr 11, 3:54 AM EDT	Winter Weather Advisory	BOX	24 hr
Apr 12, 4:06 AM EDT	Winter Weather Advisory	BOX	24 hr
Apr 19, 10:28 PM EDT	Mesoscale Discussion	SPC	92 min
May 9, 4:06 PM EDT	Areal Flood Advisory	BOX	54 min
May 9, 4:33 PM EDT	Special Weather Statement	BOX	42 min
May 12, 3:53 PM EDT	Freeze Watch	BOX	12 hr
May 13, 3:50 AM EDT	Frost Advisory	BOX	27 hr
May 20, 7:17 PM EDT	Areal Flood Advisory	BOX	118 min
May 21, 3:13 PM EDT	Special Weather Statement	BOX	47 min
May 23, 9:41 PM EDT	Flash Flood Watch	BOX	12 hr
May 24, 3:36 AM EDT	Flash Flood Warning	BOX	3 hr
May 29, 9:19 PM EDT	Special Weather Statement	BOX	56 min
May 29, 9:59 PM EDT	Special Weather Statement	BOX	61 min
Jun 1, 7:21 PM EDT	Special Weather Statement	BOX	24 min
Jun 2, 11:33 AM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 2, 6:53 PM EDT	Mesoscale Discussion	SPC	97 min
Jun 6, 3:50 PM EDT	Flood Watch	BOX	41 hr
Jun 7, 4:06 PM EDT	High Surf Advisory	BOX	50 hr
Jun 7, 5:20 PM EDT	Areal Flood Warning	BOX	4 hr
Jun 7, 7:37 PM EDT	Areal Flood Warning	BOX	4 hr
Jun 7, 11:40 PM EDT	Areal Flood Warning	BOX	5 hr
Jun 10, 4:00 AM EDT	Flood Watch	BOX	40 hr
Jun 12, 10:47 AM EDT	Flood Watch	BOX	61 hr
Jun 13, 11:50 AM EDT	River Flood Warning	BOX	7 days
Jun 14, 7:53 AM EDT	River Flood Warning	BOX	20 hr
Jun 14, 4:18 PM EDT	River Flood Warning	BOX	44 hr
Jun 17, 1:14 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 17, 3:47 PM EDT	Special Weather Statement	BOX	43 min
Jun 17, 4:09 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 17, 4:24 PM EDT	Special Weather Statement	BOX	51 min
Jun 17, 4:37 PM EDT	Severe Thunderstorm Warning	BOX	38 min
Jun 17, 5:11 PM EDT	Severe Thunderstorm Warning	BOX	49 min
Jun 17, 5:39 PM EDT	Severe Thunderstorm Warning	BOX	51 min
Jun 18, 12:53 PM EDT	Special Weather Statement	BOX	82 min
Jun 18, 1:44 PM EDT	Areal Flood Warning	BOX	3 hr
Jun 18, 2:46 PM EDT	Flash Flood Warning	BOX	3 hr
Jun 18, 6:45 PM EDT	River Flood Warning	BOX	8 hr
Jun 24, 3:25 PM EDT	Mesoscale Discussion	SPC	65 min
Jun 24, 7:55 PM EDT	Areal Flood Advisory	BOX	3 hr
Jun 25, 5:45 PM EDT	Mesoscale Discussion	SPC	60 min
Jun 26, 3:02 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 26, 4:07 PM EDT	Flash Flood Watch	BOX	57 hr
Jun 28, 12:47 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 28, 2:38 PM EDT	Areal Flood Advisory	BOX	112 min
Jun 29, 1:22 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 30, 2:33 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 1, 4:01 AM EDT	Flash Flood Watch	BOX	64 hr
Jul 1, 1:32 PM EDT	Flash Flood Warning	BOX	4 hr
Jul 1, 2:23 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 1, 2:25 PM EDT	Tornado Warning	BOX	50 min
Jul 1, 2:39 PM EDT	Flash Flood Warning	BOX	3 hr
Jul 1, 2:46 PM EDT	Flash Flood Warning	BOX	3 hr
Jul 1, 3:35 PM EDT	Tornado Warning	BOX	40 min
Jul 1, 3:57 PM EDT	Tornado Warning	BOX	33 min
Jul 3, 7:24 PM EDT	Heat Advisory	BOX	25 hr
Jul 4, 3:55 PM EDT	Heat Advisory	BOX	27 hr
Jul 5, 3:56 PM EDT	Heat Advisory	BOX	27 hr
Jul 7, 9:57 AM EDT	Heat Advisory	BOX	7 hr
Jul 7, 2:16 PM EDT	Mesoscale Discussion	SPC	119 min
Jul 8, 4:20 AM EDT	Flash Flood Watch	BOX	15 hr
Jul 10, 4:07 AM EDT	Flash Flood Watch	BOX	38 hr
Jul 14, 4:02 PM EDT	Heat Advisory	BOX	27 hr
Jul 16, 4:10 PM EDT	Heat Advisory	BOX	27 hr
Jul 17, 4:51 PM EDT	Heat Advisory	BOX	26 hr
Jul 18, 5:00 PM EDT	Excessive Heat Warning	BOX	23 hr
Jul 18, 5:00 PM EDT	Heat Advisory	BOX	23 hr
Jul 19, 4:24 PM EDT	Heat Advisory	BOX	25 hr
Jul 20, 1:36 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 20, 2:08 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 20, 6:43 PM EDT	Mesoscale Discussion	SPC	62 min
Jul 23, 4:12 AM EDT	Flash Flood Watch	BOX	15 hr
Jul 23, 11:37 AM EDT	Areal Flood Advisory	BOX	113 min
Jul 23, 12:43 PM EDT	Areal Flood Advisory	BOX	2 hr
Jul 23, 12:56 PM EDT	Flash Flood Warning	BOX	2 hr
Jul 23, 1:12 PM EDT	Flash Flood Warning	BOX	2 hr
Jul 23, 2:56 PM EDT	Special Weather Statement	BOX	64 min
Jul 23, 2:58 PM EDT	Mesoscale Discussion	SPC	62 min
Jul 23, 3:13 PM EDT	Areal Flood Advisory	BOX	2 hr
Jul 23, 3:34 PM EDT	Special Weather Statement	BOX	56 min
Jul 23, 3:38 PM EDT	Severe Thunderstorm Warning	BOX	52 min
Jul 23, 3:58 PM EDT	Areal Flood Advisory	BOX	2 hr
Jul 23, 4:15 PM EDT	Areal Flood Advisory	BOX	2 hr
Jul 23, 4:40 PM EDT	Flash Flood Warning	BOX	2 hr
Jul 23, 5:00 PM EDT	Flash Flood Warning	BOX	2 hr
Jul 25, 4:22 PM EDT	Flash Flood Watch	BOX	18 hr
Jul 25, 6:10 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 29, 1:09 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 3:36 PM EDT	Severe Thunderstorm Warning	BOX	39 min
Jul 29, 4:12 PM EDT	Severe Thunderstorm Warning	BOX	48 min
Jul 29, 4:26 PM EDT	Severe Thunderstorm Warning	BOX	49 min
Jul 29, 4:29 PM EDT	Special Weather Statement	BOX	46 min
Jul 29, 4:32 PM EDT	Severe Thunderstorm Warning	BOX	43 min
Jul 29, 4:58 PM EDT	Severe Thunderstorm Warning	BOX	47 min
Jul 29, 5:13 PM EDT	Severe Thunderstorm Warning	BOX	47 min
Jul 29, 6:41 PM EDT	Special Weather Statement	BOX	49 min
Jul 29, 7:04 PM EDT	Special Weather Statement	BOX	41 min
Aug 9, 4:11 AM EDT	Flash Flood Watch	BOX	15 hr
Aug 9, 1:25 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 3:01 PM EDT	Areal Flood Advisory	BOX	3 hr
Aug 9, 3:05 PM EDT	Areal Flood Advisory	BOX	3 hr
Aug 28, 11:42 PM EDT	Areal Flood Advisory	BOX	2 hr
Aug 31, 11:25 PM EDT	Special Weather Statement	BOX	35 min
Sep 1, 8:44 AM EDT	Severe Thunderstorm Warning	BOX	61 min
Sep 1, 8:57 AM EDT	Flash Flood Warning	BOX	5 hr
Sep 1, 12:48 PM EDT	Areal Flood Advisory	BOX	117 min
Sep 1, 1:57 PM EDT	Areal Flood Warning	BOX	3 hr
Sep 2, 4:21 AM EDT	Flash Flood Watch	BOX	21 hr
Sep 3, 1:44 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 10, 4:26 PM EDT	Heat Advisory	BOX	26 hr
Sep 12, 12:24 PM EDT	Mesoscale Discussion	SPC	66 min
Sep 12, 1:03 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Sep 12, 1:47 PM EDT	Flash Flood Watch	BOX	8 hr
Sep 12, 2:10 PM EDT	Severe Thunderstorm Warning	BOX	65 min
Sep 12, 3:26 PM EDT	Mesoscale Discussion	SPC	64 min
Sep 12, 8:03 PM EDT	Mesoscale Discussion	SPC	57 min
Sep 17, 4:08 AM EDT	Frost Advisory	BOX	28 hr
Sep 21, 1:53 AM EDT	Dense Fog Advisory	BOX	7 hr
Sep 29, 5:26 AM EDT	Dense Fog Advisory	BOX	5 hr
Sep 29, 3:57 PM EDT	Dense Fog Advisory	BOX	14 hr
Oct 6, 7:15 PM EDT	Dense Fog Advisory	BOX	9 hr
Oct 7, 4:21 AM EDT	Wind Advisory	BOX	18 hr
Oct 7, 2:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 7, 2:50 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Oct 7, 5:54 PM EDT	Severe Thunderstorm Warning	BOX	66 min
Oct 7, 6:58 PM EDT	Special Weather Statement	BOX	47 min
Oct 13, 4:22 AM EDT	Frost Advisory	BOX	27 hr
Oct 23, 2:46 PM EDT	Frost Advisory	BOX	17 hr
Oct 24, 3:25 PM EDT	Frost Advisory	BOX	16 hr
Oct 25, 3:29 PM EDT	Freeze Warning	BOX	16 hr
Oct 31, 3:34 PM EDT	Wind Advisory	BOX	24 hr
Nov 1, 11:25 AM EDT	Special Weather Statement	BOX	65 min
Nov 17, 10:48 PM EST	Dense Fog Advisory	BOX	5 hr
Nov 18, 5:11 AM EST	Mesoscale Discussion	SPC	3 hr
Nov 23, 4:45 PM EST	Wind Advisory	BOX	31 hr
Nov 23, 7:44 PM EST	Special Weather Statement	BOX	61 min
Nov 25, 4:22 PM EST	High Wind Watch	BOX	12 hr
Nov 26, 4:28 AM EST	Wind Advisory	BOX	36 hr
Nov 26, 11:38 AM EST	High Wind Warning	BOX	25 hr
Nov 26, 11:45 AM EST	Flood Watch	BOX	28 hr
Nov 27, 4:34 AM EST	Areal Flood Advisory	BOX	12 hr
Nov 27, 4:10 PM EST	Flood Watch	BOX	110 min
Dec 1, 5:37 AM EST	Freezing Rain Advisory	BOX	5 hr
Dec 5, 1:25 PM EST	Dense Fog Advisory	BOX	14 hr
Dec 6, 4:08 AM EST	Winter Weather Advisory	BOX	23 hr
Dec 8, 4:25 AM EST	Winter Weather Advisory	BOX	35 hr
Dec 13, 4:27 AM EST	Winter Storm Watch	BOX	25 hr
Dec 13, 3:58 PM EST	Coastal Flood Advisory	BOX	43 hr
Dec 13, 4:14 PM EST	Winter Storm Warning	BOX	38 hr
Dec 14, 8:16 PM EST	Mesoscale Discussion	SPC	6 hr
Dec 15, 3:37 AM EST	Mesoscale Discussion	SPC	6 hr
Dec 15, 9:08 AM EST	Winter Weather Advisory	BOX	3 hr
Dec 16, 4:03 PM EST	Winter Weather Advisory	BOX	30 hr
Dec 17, 10:55 AM EST	Winter Storm Warning	BOX	12 hr
Dec 17, 4:36 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 22, 4:27 AM EST	Freezing Rain Advisory	BOX	35 hr
Dec 22, 4:40 PM EST	Freezing Rain Advisory	BOX	22 hr
Dec 22, 11:11 PM EST	Dense Fog Advisory	BOX	9 hr
Dec 23, 8:38 AM EST	Mesoscale Discussion	SPC	4 hr
Dec 26, 1:58 PM EST	Special Weather Statement	BOX	107 min
Dec 29, 11:13 AM EST	Winter Weather Advisory	BOX	11 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
Severe Thunderstorm Warning	13
Tornado Warning	3
Severe Thunderstorm Watch	5
Mesoscale Discussion	32
Special Weather Statement	20
Flooding
Areal Flood Warning	5
Flash Flood Warning	10
River Flood Warning	4
Flash Flood Watch	10
Flood Watch	6
Areal Flood Advisory	16
Winter
Blizzard Warning	1
Winter Storm Warning	6
Blizzard Watch	1
Winter Storm Watch	7
Freezing Rain Advisory	5
Winter Weather Advisory	15
Heat
Excessive Heat Warning	1
Heat Advisory	10
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	3
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	8
Fire
Red Flag Warning	1
Fog and smoke
Dense Fog Advisory	11
Coast and beach
Coastal Flood Advisory	1
High Surf Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2012 2014

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. Warning verification from the Mesonet's Cow. Rebuilt daily.