Alert archive / Massachusetts / Norfolk County

Weather alerts in Norfolk County, Massachusetts, 2014

173 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Norfolk County and its neighbors

Each county as a circle sized by its count in 2014. Tap one for its archive.

Alerts: 173
Warnings: 31
Watches: 31
Advisories: 71
Busiest month: January22 alerts
Busiest day: September 6, 20146 alerts

Over time

By month

Warning verification

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

Norfolk County, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	8	5	38%	7	43%	17 min
Flash flood warnings	2	0	100%	0

Each office's whole area, 2014

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Boston/Norton, MA: tornado warnings	8	0	100%	14	0%
NWS Boston/Norton, MA: severe thunderstorm warnings	120	73	39%	398	66%	26 min
NWS Boston/Norton, MA: flash flood warnings	48	20	58%	192	78%	78 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 1, 2:54 AM EST	Coastal Flood Watch	BOX	25 hr
Jan 1, 3:57 AM EST	Winter Storm Watch	BOX	12 hr
Jan 1, 4:10 PM EST	Winter Storm Warning	BOX	42 hr
Jan 1, 5:01 PM EST	Coastal Flood Advisory	BOX	23 hr
Jan 2, 3:52 AM EST	Blizzard Warning	BOX	31 hr
Jan 2, 4:03 AM EST	Coastal Flood Warning	BOX	35 hr
Jan 2, 10:49 AM EST	Wind Chill Advisory	BOX	46 hr
Jan 2, 8:43 PM EST	Mesoscale Discussion	SPC	5 hr
Jan 6, 3:13 AM EST	Dense Fog Advisory	BOX	12 hr
Jan 7, 2:30 AM EST	Special Weather Statement	BOX	90 min
Jan 10, 4:27 PM EST	Wind Advisory	BOX	30 hr
Jan 11, 3:31 PM EST	Special Weather Statement	BOX	59 min
Jan 16, 12:36 AM EST	Dense Fog Advisory	BOX	7 hr
Jan 16, 2:37 PM EST	Dense Fog Advisory	BOX	17 hr
Jan 20, 3:57 PM EST	Blizzard Watch	BOX	6 hr
Jan 20, 3:57 PM EST	Blizzard Watch	BOX	13 hr
Jan 20, 3:57 PM EST	Winter Storm Warning	BOX	42 hr
Jan 21, 4:29 AM EST	Blizzard Warning	BOX	33 hr
Jan 21, 2:23 PM EST	Coastal Flood Statement	BOX	15 hr
Jan 21, 4:28 PM EST	Mesoscale Discussion	SPC	6 hr
Jan 21, 9:58 PM EST	Mesoscale Discussion	SPC	6 hr
Jan 24, 3:56 PM EST	Wind Advisory	BOX	27 hr
Feb 3, 3:59 AM EST	Winter Storm Watch	BOX	24 hr
Feb 4, 4:15 AM EST	Winter Storm Warning	BOX	43 hr
Feb 5, 3:23 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 11, 3:51 PM EST	Winter Storm Watch	BOX	25 hr
Feb 12, 4:35 AM EST	Winter Storm Warning	BOX	50 hr
Feb 12, 4:23 PM EST	Winter Weather Advisory	BOX	26 hr
Feb 12, 4:25 PM EST	Wind Advisory	BOX	33 hr
Feb 13, 8:00 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 14, 3:49 AM EST	Wind Advisory	BOX	14 hr
Feb 14, 4:24 AM EST	Winter Storm Watch	BOX	11 hr
Feb 14, 3:33 PM EST	Blizzard Watch	BOX	12 hr
Feb 14, 3:33 PM EST	Winter Storm Warning	BOX	34 hr
Feb 15, 3:47 AM EST	Blizzard Warning	BOX	23 hr
Feb 15, 3:04 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 17, 3:57 PM EST	Winter Weather Advisory	BOX	27 hr
Feb 18, 11:12 AM EST	Special Weather Statement	BOX	2 hr
Feb 21, 2:23 PM EST	Dense Fog Advisory	BOX	3 hr
Feb 21, 5:04 PM EST	Special Weather Statement	BOX	56 min
Feb 27, 8:49 PM EST	Special Weather Statement	BOX	86 min
Feb 27, 10:22 PM EST	Special Weather Statement	BOX	83 min
Mar 11, 4:48 PM EDT	Winter Weather Advisory	BOX	43 hr
Mar 24, 4:44 AM EDT	Winter Storm Watch	BOX	34 hr
Mar 25, 4:42 AM EDT	High Wind Watch	BOX	10 hr
Mar 25, 2:37 PM EDT	Winter Weather Advisory	BOX	25 hr
Mar 25, 2:54 PM EDT	Wind Advisory	BOX	38 hr
Mar 25, 3:09 PM EDT	High Wind Warning	BOX	28 hr
Mar 25, 4:10 PM EDT	Coastal Flood Advisory	BOX	18 hr
Mar 28, 2:31 PM EDT	Wind Advisory	BOX	3 hr
Mar 28, 3:59 PM EDT	Coastal Flood Advisory	BOX	44 hr
Mar 30, 4:10 AM EDT	Areal Flood Advisory	BOX	3 hr
Mar 30, 4:49 AM EDT	Coastal Flood Advisory	BOX	22 hr
Mar 30, 7:00 AM EDT	Areal Flood Advisory	BOX	2 hr
Mar 30, 9:07 AM EDT	Areal Flood Advisory	BOX	113 min
Mar 30, 4:37 PM EDT	Coastal Flood Advisory	BOX	22 hr
Mar 31, 4:36 AM EDT	Coastal Flood Advisory	BOX	22 hr
Mar 31, 8:22 AM EDT	Areal Flood Warning	BOX	6 hr
Apr 1, 4:06 AM EDT	Coastal Flood Statement	BOX	11 hr
Apr 2, 10:20 PM EDT	River Flood Warning	BOX	22 hr
Apr 14, 3:45 PM EDT	Flood Watch	BOX	36 hr
Apr 15, 4:32 AM EDT	Wind Advisory	BOX	21 hr
Apr 15, 1:12 PM EDT	Areal Flood Advisory	BOX	2 hr
Apr 15, 5:53 PM EDT	Areal Flood Advisory	BOX	112 min
Apr 15, 7:42 PM EDT	Areal Flood Advisory	BOX	4 hr
Apr 24, 12:01 PM EDT	Wind Advisory	BOX	7 hr
Apr 29, 4:21 PM EDT	Flood Watch	BOX	45 hr
May 1, 1:21 PM EDT	Dense Fog Advisory	BOX	14 hr
May 25, 7:40 PM EDT	Severe Thunderstorm Warning	BOX	50 min
May 27, 10:36 PM EDT	Flash Flood Warning	BOX	114 min
May 30, 7:55 PM EDT	Special Weather Statement	BOX	65 min
May 30, 8:41 PM EDT	Special Weather Statement	BOX	34 min
Jun 2, 3:41 AM EDT	High Surf Advisory	BOX	24 hr
Jun 10, 5:52 PM EDT	Severe Thunderstorm Warning	BOX	22 min
Jun 13, 10:10 AM EDT	Areal Flood Advisory	BOX	65 min
Jun 13, 10:42 AM EDT	Flash Flood Watch	BOX	8 hr
Jun 13, 3:19 PM EDT	Dense Fog Advisory	BOX	15 hr
Jun 13, 4:21 PM EDT	Coastal Flood Statement	BOX	9 hr
Jun 18, 2:07 AM EDT	Special Weather Statement	BOX	3 hr
Jun 26, 3:39 AM EDT	Areal Flood Advisory	BOX	66 min
Jul 2, 12:45 PM EDT	Mesoscale Discussion	SPC	60 min
Jul 3, 9:46 PM EDT	Mesoscale Discussion	SPC	29 min
Jul 3, 9:51 PM EDT	Severe Thunderstorm Warning	BOX	39 min
Jul 4, 4:48 AM EDT	Flash Flood Watch	BOX	18 hr
Jul 4, 5:59 AM EDT	Hurricane Local Statement	BOX	23 hr
Jul 4, 4:59 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 8, 9:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 14, 4:03 AM EDT	Flash Flood Watch	BOX	63 hr
Jul 14, 5:05 PM EDT	Areal Flood Advisory	BOX	115 min
Jul 15, 1:51 PM EDT	Mesoscale Discussion	SPC	114 min
Jul 16, 9:23 AM EDT	Special Weather Statement	BOX	52 min
Jul 16, 2:09 PM EDT	Special Weather Statement	BOX	81 min
Jul 27, 1:20 PM EDT	Areal Flood Advisory	BOX	55 min
Jul 28, 8:50 AM EDT	Severe Thunderstorm Warning	BOX	40 min
Jul 28, 9:18 AM EDT	Areal Flood Advisory	BOX	57 min
Jul 28, 2:07 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 28, 7:38 PM EDT	Mesoscale Discussion	SPC	97 min
Aug 4, 2:12 AM EDT	Dense Fog Advisory	BOX	5 hr
Aug 6, 12:46 PM EDT	Special Weather Statement	BOX	44 min
Aug 6, 2:48 PM EDT	Special Weather Statement	BOX	42 min
Aug 7, 1:51 PM EDT	Severe Thunderstorm Warning	BOX	24 min
Aug 7, 2:33 PM EDT	Severe Thunderstorm Warning	BOX	42 min
Aug 7, 3:13 PM EDT	Severe Thunderstorm Warning	BOX	47 min
Aug 7, 4:14 PM EDT	Severe Thunderstorm Warning	BOX	46 min
Aug 11, 3:58 PM EDT	Flash Flood Watch	BOX	52 hr
Aug 12, 11:33 AM EDT	Coastal Flood Advisory	BOX	25 hr
Aug 13, 10:33 AM EDT	Coastal Flood Advisory	BOX	5 hr
Aug 13, 10:59 AM EDT	Areal Flood Advisory	BOX	4 hr
Aug 13, 11:24 AM EDT	Flash Flood Warning	BOX	4 hr
Aug 15, 3:22 AM EDT	Special Weather Statement	BOX	38 min
Aug 27, 3:41 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 31, 4:32 PM EDT	Mesoscale Discussion	SPC	118 min
Aug 31, 9:09 PM EDT	Areal Flood Advisory	BOX	2 hr
Sep 2, 6:05 PM EDT	Special Weather Statement	BOX	40 min
Sep 2, 6:35 PM EDT	Areal Flood Advisory	BOX	55 min
Sep 6, 12:31 PM EDT	Mesoscale Discussion	SPC	89 min
Sep 6, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 6, 4:20 PM EDT	Mesoscale Discussion	SPC	85 min
Sep 6, 5:36 PM EDT	Special Weather Statement	BOX	84 min
Sep 6, 6:08 PM EDT	Areal Flood Advisory	BOX	112 min
Sep 6, 7:31 PM EDT	Mesoscale Discussion	SPC	89 min
Sep 8, 4:07 AM EDT	Coastal Flood Statement	BOX	22 hr
Oct 1, 2:02 PM EDT	Flood Watch	BOX	14 hr
Oct 8, 4:07 AM EDT	Mesoscale Discussion	SPC	113 min
Oct 11, 4:19 AM EDT	Frost Advisory	BOX	28 hr
Oct 16, 11:44 AM EDT	Flash Flood Watch	BOX	11 hr
Oct 16, 3:33 PM EDT	Areal Flood Advisory	BOX	117 min
Oct 18, 3:03 PM EDT	Special Weather Statement	BOX	27 min
Oct 18, 4:30 PM EDT	Freeze Watch	BOX	11 hr
Oct 19, 3:08 AM EDT	Frost Advisory	BOX	30 hr
Oct 19, 3:08 AM EDT	Freeze Warning	BOX	30 hr
Oct 22, 4:34 AM EDT	Flood Watch	BOX	29 hr
Oct 22, 9:48 AM EDT	Wind Advisory	BOX	37 hr
Oct 22, 12:16 PM EDT	Coastal Flood Advisory	BOX	26 hr
Oct 22, 7:11 PM EDT	High Wind Warning	BOX	15 hr
Oct 22, 9:25 PM EDT	Special Weather Statement	BOX	50 min
Oct 22, 10:48 PM EDT	Areal Flood Advisory	BOX	57 min
Oct 22, 11:49 PM EDT	Areal Flood Advisory	BOX	3 hr
Oct 23, 2:43 AM EDT	Areal Flood Advisory	BOX	3 hr
Oct 23, 5:46 AM EDT	Areal Flood Advisory	BOX	3 hr
Oct 23, 7:58 AM EDT	Areal Flood Warning	BOX	2 hr
Oct 31, 9:47 AM EDT	Coastal Flood Watch	BOX	30 hr
Oct 31, 9:52 AM EDT	High Wind Watch	BOX	18 hr
Oct 31, 3:50 PM EDT	High Wind Warning	BOX	51 hr
Nov 1, 4:20 AM EDT	Wind Advisory	BOX	39 hr
Nov 1, 3:25 PM EDT	Coastal Flood Warning	BOX	20 hr
Nov 1, 3:25 PM EDT	Coastal Flood Advisory	BOX	20 hr
Nov 11, 8:31 PM EST	Dense Fog Advisory	BOX	17 hr
Nov 13, 3:59 PM EST	Winter Weather Advisory	BOX	13 hr
Nov 16, 3:19 AM EST	High Wind Watch	BOX	13 hr
Nov 16, 4:11 PM EST	High Wind Warning	BOX	29 hr
Nov 16, 4:11 PM EST	Wind Advisory	BOX	27 hr
Nov 17, 11:11 AM EST	Flash Flood Watch	BOX	8 hr
Nov 17, 4:08 PM EST	Areal Flood Advisory	BOX	112 min
Nov 23, 2:19 PM EST	Wind Advisory	BOX	24 hr
Nov 24, 4:19 AM EST	Winter Storm Watch	BOX	35 hr
Nov 25, 5:23 AM EST	High Wind Watch	BOX	9 hr
Nov 25, 2:51 PM EST	Wind Advisory	BOX	36 hr
Nov 25, 2:59 PM EST	Winter Weather Advisory	BOX	35 hr
Nov 27, 3:25 PM EST	Winter Weather Advisory	BOX	22 hr
Dec 7, 4:18 PM EST	High Wind Watch	BOX	36 hr
Dec 8, 4:37 AM EST	Flood Watch	BOX	38 hr
Dec 8, 11:32 AM EST	Coastal Flood Advisory	BOX	27 hr
Dec 8, 3:20 PM EST	Wind Advisory	BOX	30 hr
Dec 8, 3:21 PM EST	Winter Weather Advisory	BOX	22 hr
Dec 9, 12:03 PM EST	Areal Flood Advisory	BOX	4 hr
Dec 9, 2:14 PM EST	Areal Flood Warning	BOX	4 hr
Dec 9, 5:51 PM EST	Areal Flood Warning	BOX	3 hr
Dec 9, 8:38 PM EST	Areal Flood Warning	BOX	9 hr
Dec 22, 4:14 PM EST	Coastal Flood Advisory	BOX	23 hr
Dec 23, 4:22 PM EST	Flood Watch	BOX	36 hr
Dec 23, 4:25 PM EST	Coastal Flood Advisory	BOX	23 hr
Dec 24, 3:16 AM EST	Wind Advisory	BOX	28 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
Severe Thunderstorm Watch	2
Mesoscale Discussion	17
Special Weather Statement	18
Flooding
Areal Flood Warning	5
Flash Flood Warning	2
River Flood Warning	1
Flash Flood Watch	6
Flood Watch	6
Areal Flood Advisory	23
Winter
Blizzard Warning	3
Winter Storm Warning	5
Blizzard Watch	3
Winter Storm Watch	6
Winter Weather Advisory	8
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
High Wind Warning	4
High Wind Watch	5
Wind Advisory	15
Fog and smoke
Dense Fog Advisory	8
Tropical
Hurricane Local Statement	1
Coast and beach
Coastal Flood Warning	2
Coastal Flood Watch	2
Coastal Flood Advisory	13
High Surf Advisory	1
Coastal Flood Statement	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2013 2015

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.