Alert archive / Massachusetts / Bristol County

Weather alerts in Bristol County, Massachusetts, 2015

168 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Bristol County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 168
Warnings: 32
Watches: 20
Advisories: 69
Busiest month: January26 alerts
Busiest day: June 23, 201510 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Bristol County in 2015 had a tornado report inside them.

Bristol County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	0
Severe thunderstorm warnings	8	5	38%	11	100%	43 min
Flash flood warnings	4	0	100%	0

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Boston/Norton, MA: tornado warnings	10	1	90%	2	50%	23 min
NWS Boston/Norton, MA: severe thunderstorm warnings	91	52	43%	309	75%	23 min
NWS Boston/Norton, MA: flash flood warnings	12	1	92%	5	100%	39 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 2, 3:53 PM EST	Wind Advisory	BOX	44 hr
Jan 2, 4:09 PM EST	Winter Weather Advisory	BOX	44 hr
Jan 4, 12:07 PM EST	Wind Advisory	BOX	7 hr
Jan 4, 1:11 PM EST	Dense Fog Advisory	BOX	9 hr
Jan 5, 4:24 AM EST	Wind Advisory	BOX	14 hr
Jan 6, 4:31 PM EST	Wind Chill Advisory	BOX	42 hr
Jan 7, 3:49 PM EST	High Wind Watch	BOX	24 hr
Jan 8, 3:25 PM EST	Wind Advisory	BOX	24 hr
Jan 14, 10:22 PM EST	Winter Weather Advisory	BOX	22 hr
Jan 18, 8:21 PM EST	Special Weather Statement	BOX	84 min
Jan 18, 8:23 PM EST	Special Weather Statement	BOX	82 min
Jan 18, 8:24 PM EST	Special Weather Statement	BOX	81 min
Jan 18, 9:11 PM EST	Areal Flood Advisory	BOX	2 hr
Jan 23, 4:06 AM EST	Winter Weather Advisory	BOX	39 hr
Jan 24, 4:28 AM EST	Special Weather Statement	BOX	62 min
Jan 25, 3:52 AM EST	Blizzard Watch	BOX	12 hr
Jan 25, 3:58 PM EST	Blizzard Warning	BOX	54 hr
Jan 25, 3:58 PM EST	Winter Storm Warning	BOX	54 hr
Jan 26, 6:33 PM EST	Mesoscale Discussion	SPC	5 hr
Jan 26, 11:32 PM EST	Mesoscale Discussion	SPC	4 hr
Jan 27, 4:28 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 27, 10:24 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 29, 3:42 AM EST	Winter Weather Advisory	BOX	49 hr
Jan 30, 4:25 PM EST	Winter Storm Watch	BOX	37 hr
Jan 30, 4:30 PM EST	Wind Advisory	BOX	29 hr
Jan 31, 3:23 PM EST	Winter Storm Warning	BOX	56 hr
Feb 2, 1:56 PM EST	Special Weather Statement	BOX	49 min
Feb 2, 3:14 PM EST	Special Weather Statement	BOX	91 min
Feb 5, 3:49 AM EST	Wind Chill Advisory	BOX	29 hr
Feb 6, 3:22 PM EST	Winter Storm Watch	BOX	24 hr
Feb 7, 2:55 PM EST	Winter Storm Watch	BOX	13 hr
Feb 7, 2:55 PM EST	Winter Storm Warning	BOX	61 hr
Feb 12, 4:14 PM EST	Winter Storm Watch	BOX	36 hr
Feb 13, 3:18 PM EST	Blizzard Warning	BOX	49 hr
Feb 14, 4:40 AM EST	Wind Chill Warning	BOX	53 hr
Feb 15, 4:15 AM EST	Wind Chill Advisory	BOX	30 hr
Feb 15, 4:17 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 15, 2:42 PM EST	Winter Weather Advisory	BOX	9 hr
Feb 18, 10:55 PM EST	Special Weather Statement	BOX	110 min
Feb 19, 4:51 AM EST	Wind Chill Advisory	BOX	29 hr
Feb 20, 4:27 PM EST	Winter Weather Advisory	BOX	43 hr
Feb 22, 4:25 PM EST	Wind Chill Advisory	BOX	38 hr
Feb 23, 3:54 PM EST	Winter Weather Advisory	BOX	39 hr
Feb 28, 4:06 AM EST	Winter Storm Watch	BOX	24 hr
Mar 1, 4:15 AM EST	Winter Storm Warning	BOX	22 hr
Mar 1, 1:57 PM EST	Mesoscale Discussion	SPC	5 hr
Mar 2, 3:38 PM EST	Winter Weather Advisory	BOX	36 hr
Mar 3, 4:49 PM EST	Winter Storm Watch	BOX	22 hr
Mar 3, 7:01 PM EST	Mesoscale Discussion	SPC	4 hr
Mar 4, 4:42 AM EST	Winter Storm Warning	BOX	41 hr
Mar 4, 2:32 PM EST	Winter Weather Advisory	BOX	22 hr
Mar 5, 12:58 PM EST	Winter Weather Advisory	BOX	3 hr
Mar 11, 1:51 AM EDT	Dense Fog Advisory	BOX	6 hr
Mar 13, 4:12 PM EDT	Freezing Rain Advisory	BOX	12 hr
Mar 14, 4:02 AM EDT	Freezing Rain Advisory	BOX	6 hr
Mar 16, 3:28 PM EDT	Wind Advisory	BOX	52 hr
Mar 17, 4:10 PM EDT	Special Weather Statement	BOX	110 min
Mar 26, 6:11 AM EDT	Dense Fog Advisory	BOX	18 hr
Mar 26, 5:30 PM EDT	Special Weather Statement	BOX	45 min
Mar 26, 6:02 PM EDT	Special Weather Statement	BOX	28 min
Apr 3, 3:55 AM EDT	Wind Advisory	BOX	38 hr
Apr 3, 10:25 PM EDT	Dense Fog Advisory	BOX	8 hr
Apr 4, 4:53 AM EDT	Special Weather Statement	BOX	37 min
Apr 10, 2:28 PM EDT	Dense Fog Advisory	BOX	9 hr
Apr 15, 4:24 AM EDT	Red Flag Warning	BOX	15 hr
Apr 19, 3:18 PM EDT	Coastal Flood Advisory	BOX	37 hr
Apr 25, 3:47 PM EDT	Frost Advisory	BOX	16 hr
May 3, 4:09 PM EDT	Fire Weather Watch	BOX	12 hr
May 8, 3:08 PM EDT	Dense Fog Advisory	BOX	16 hr
May 9, 2:56 PM EDT	Dense Fog Advisory	BOX	19 hr
May 10, 3:57 PM EDT	Dense Fog Advisory	BOX	18 hr
May 11, 4:20 PM EDT	Dense Fog Advisory	BOX	18 hr
May 12, 4:13 AM EDT	High Surf Advisory	BOX	16 hr
May 12, 2:38 PM EDT	Mesoscale Discussion	SPC	2 hr
May 12, 4:03 PM EDT	Fire Weather Watch	BOX	11 hr
May 13, 3:14 AM EDT	Frost Advisory	BOX	28 hr
May 13, 3:20 AM EDT	Red Flag Warning	BOX	15 hr
May 30, 12:00 AM EDT	Dense Fog Advisory	BOX	8 hr
May 31, 3:29 PM EDT	Flash Flood Watch	BOX	41 hr
May 31, 4:01 PM EDT	Areal Flood Advisory	BOX	119 min
May 31, 4:24 PM EDT	Areal Flood Advisory	BOX	2 hr
May 31, 4:51 PM EDT	Flash Flood Warning	BOX	3 hr
May 31, 7:56 PM EDT	Areal Flood Advisory	BOX	2 hr
Jun 12, 9:13 PM EDT	Dense Fog Advisory	BOX	5 hr
Jun 20, 4:19 PM EDT	Flood Watch	BOX	20 hr
Jun 21, 7:41 AM EDT	Areal Flood Advisory	BOX	64 min
Jun 21, 10:39 AM EDT	Areal Flood Advisory	BOX	66 min
Jun 21, 11:41 AM EDT	Areal Flood Advisory	BOX	64 min
Jun 23, 10:12 AM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 23, 2:46 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 23, 3:47 PM EDT	Tornado Watch	SPC	7 hr
Jun 23, 4:53 PM EDT	Mesoscale Discussion	SPC	97 min
Jun 23, 5:08 PM EDT	Severe Thunderstorm Warning	BOX	52 min
Jun 23, 5:16 PM EDT	Tornado Warning	BOX	44 min
Jun 23, 5:42 PM EDT	Severe Thunderstorm Warning	BOX	48 min
Jun 23, 5:46 PM EDT	Tornado Warning	BOX	30 min
Jun 23, 5:52 PM EDT	Areal Flood Warning	BOX	113 min
Jun 23, 6:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 27, 4:22 AM EDT	Wind Advisory	BOX	31 hr
Jun 27, 4:28 AM EDT	Flood Watch	BOX	31 hr
Jun 27, 3:51 PM EDT	High Surf Advisory	BOX	28 hr
Jun 29, 3:58 AM EDT	Rip Current Statement	BOX	16 hr
Jul 1, 7:28 AM EDT	Severe Thunderstorm Warning	BOX	62 min
Jul 1, 7:56 AM EDT	Areal Flood Advisory	BOX	2 hr
Jul 7, 7:48 PM EDT	Flash Flood Watch	BOX	24 hr
Jul 8, 4:16 PM EDT	Special Weather Statement	BOX	44 min
Jul 15, 11:41 AM EDT	Flash Flood Watch	BOX	9 hr
Jul 15, 5:07 PM EDT	Flash Flood Warning	BOX	113 min
Jul 24, 2:59 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 27, 2:26 AM EDT	Special Weather Statement	BOX	49 min
Jul 27, 3:14 AM EDT	Special Weather Statement	BOX	61 min
Jul 27, 4:00 AM EDT	Special Weather Statement	BOX	60 min
Jul 27, 4:55 AM EDT	Special Weather Statement	BOX	65 min
Jul 27, 9:34 AM EDT	Flash Flood Warning	BOX	3 hr
Jul 27, 11:49 AM EDT	Special Weather Statement	BOX	56 min
Jul 28, 3:23 PM EDT	Special Weather Statement	BOX	52 min
Jul 28, 3:44 PM EDT	Severe Thunderstorm Warning	BOX	24 min
Jul 28, 4:10 PM EDT	Special Weather Statement	BOX	50 min
Jul 28, 4:55 PM EDT	Severe Thunderstorm Warning	BOX	35 min
Aug 4, 5:59 AM EDT	Mesoscale Discussion	SPC	3 hr
Aug 4, 6:09 AM EDT	Severe Thunderstorm Warning	BOX	66 min
Aug 4, 6:53 AM EDT	Severe Thunderstorm Warning	BOX	52 min
Aug 4, 6:54 AM EDT	Severe Thunderstorm Warning	BOX	51 min
Aug 4, 6:49 PM EDT	Mesoscale Discussion	SPC	86 min
Aug 11, 11:39 AM EDT	Special Weather Statement	BOX	96 min
Aug 11, 12:59 PM EDT	Special Weather Statement	BOX	91 min
Aug 15, 8:58 PM EDT	Areal Flood Warning	BOX	3 hr
Aug 18, 4:10 PM EDT	Areal Flood Warning	BOX	2 hr
Aug 22, 2:33 AM EDT	Special Weather Statement	BOX	42 min
Aug 22, 2:56 AM EDT	Flash Flood Watch	BOX	13 hr
Aug 26, 1:22 AM EDT	Special Weather Statement	BOX	38 min
Sep 10, 7:49 AM EDT	Special Weather Statement	BOX	41 min
Sep 10, 11:35 AM EDT	Flash Flood Watch	BOX	17 hr
Sep 10, 12:02 PM EDT	Special Weather Statement	BOX	88 min
Sep 10, 12:41 PM EDT	Areal Flood Warning	BOX	2 hr
Sep 13, 2:26 PM EDT	Special Weather Statement	BOX	49 min
Sep 13, 4:37 PM EDT	Special Weather Statement	BOX	53 min
Sep 19, 3:42 AM EDT	Dense Fog Advisory	BOX	4 hr
Sep 29, 4:38 AM EDT	Rip Current Statement	BOX	14 hr
Sep 29, 1:00 PM EDT	Coastal Flood Advisory	BOX	23 hr
Sep 30, 7:57 AM EDT	Special Weather Statement	BOX	93 min
Sep 30, 11:02 AM EDT	Special Weather Statement	BOX	88 min
Sep 30, 12:55 PM EDT	Areal Flood Warning	BOX	2 hr
Oct 1, 4:29 PM EDT	Wind Advisory	BOX	47 hr
Oct 10, 3:27 AM EDT	Frost Advisory	BOX	28 hr
Oct 16, 3:13 PM EDT	Freeze Watch	BOX	12 hr
Oct 17, 3:10 AM EDT	Freeze Warning	BOX	30 hr
Oct 18, 4:08 AM EDT	Freeze Warning	BOX	29 hr
Oct 27, 4:01 PM EDT	Wind Advisory	BOX	41 hr
Oct 27, 4:32 PM EDT	Coastal Flood Advisory	BOX	34 hr
Oct 29, 3:43 AM EDT	Coastal Flood Advisory	BOX	11 hr
Oct 29, 4:17 AM EDT	Special Weather Statement	BOX	43 min
Oct 29, 4:28 AM EDT	Flash Flood Warning	BOX	3 hr
Oct 29, 4:34 AM EDT	Areal Flood Warning	BOX	3 hr
Nov 5, 3:39 AM EST	Dense Fog Advisory	BOX	3 hr
Nov 20, 3:44 AM EST	Special Weather Statement	BOX	91 min
Nov 27, 5:18 AM EST	Dense Fog Advisory	BOX	4 hr
Dec 2, 3:03 PM EST	Dense Fog Advisory	BOX	4 hr
Dec 10, 10:19 PM EST	Dense Fog Advisory	BOX	11 hr
Dec 11, 9:01 AM EST	Dense Fog Advisory	BOX	2 hr
Dec 14, 11:21 AM EST	Dense Fog Advisory	BOX	13 hr
Dec 14, 3:03 PM EST	Wind Advisory	BOX	26 hr
Dec 21, 3:20 AM EST	Wind Advisory	BOX	13 hr
Dec 23, 2:44 AM EST	Dense Fog Advisory	BOX	7 hr
Dec 24, 5:39 PM EST	Dense Fog Advisory	BOX	15 hr
Dec 27, 9:11 AM EST	Dense Fog Advisory	BOX	3 hr
Dec 27, 3:10 PM EST	Winter Weather Advisory	BOX	46 hr
Dec 29, 1:06 PM EST	Freezing Rain Advisory	BOX	9 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	8
Tornado Warning	2
Severe Thunderstorm Watch	1
Tornado Watch	1
Mesoscale Discussion	14
Special Weather Statement	31
Flooding
Areal Flood Warning	6
Flash Flood Warning	4
Flash Flood Watch	5
Flood Watch	2
Areal Flood Advisory	8
Winter
Blizzard Warning	2
Winter Storm Warning	5
Blizzard Watch	1
Winter Storm Watch	6
Freezing Rain Advisory	3
Winter Weather Advisory	11
Cold
Freeze Warning	2
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	3
Wind Chill Advisory	5
Wind and dust
High Wind Watch	1
Wind Advisory	12
Fire
Red Flag Warning	2
Fire Weather Watch	2
Fog and smoke
Dense Fog Advisory	21
Coast and beach
Coastal Flood Advisory	4
High Surf Advisory	2
Rip Current Statement	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.