Alert archive / Massachusetts / Norfolk County

Weather alerts in Norfolk County, Massachusetts, 2008

221 weather alerts in 2008, 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 2008. Tap one for its archive.

Alerts: 221
Warnings: 80
Watches: 33
Advisories: 78
Busiest month: July44 alerts
Busiest day: July 24, 200811 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, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	46	31	33%	16	88%	23 min
Flash flood warnings	3	2	33%	1	0%

Each office's whole area, 2008

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Boston/Norton, MA: tornado warnings	3	1	67%	1	100%	1 min
NWS Boston/Norton, MA: severe thunderstorm warnings	287	176	39%	571	80%	21 min
NWS Boston/Norton, MA: flash flood warnings	16	7	56%	56	57%	35 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 9, 3:53 AM EST	Wind Advisory	BOX	13 hr
Jan 13, 4:46 AM EST	Winter Storm Warning	BOX	31 hr
Jan 13, 12:00 PM EST	Heavy Snow Warning	BOX	27 hr
Jan 13, 12:00 PM EST	Winter Weather Advisory	BOX	28 hr
Jan 22, 12:00 PM EST	Wind Advisory	BOX	4 hr
Jan 27, 5:19 AM EST	Winter Storm Watch	BOX	7 hr
Jan 27, 12:25 PM EST	Snow Advisory	BOX	10 hr
Jan 27, 4:42 PM EST	Wind Advisory	BOX	6 hr
Jan 27, 8:50 PM EST	Winter Storm Warning	BOX	11 hr
Jan 30, 4:02 AM EST	Wind Advisory	BOX	14 hr
Feb 1, 4:45 AM EST	Wind Advisory	BOX	30 hr
Feb 5, 5:06 PM EST	Dense Fog Advisory	BOX	11 hr
Feb 10, 4:31 AM EST	Wind Advisory	BOX	32 hr
Feb 12, 4:59 AM EST	Winter Weather Advisory	BOX	28 hr
Feb 12, 11:13 AM EST	Flood Watch	BOX	34 hr
Feb 12, 7:41 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 13, 1:31 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 13, 4:32 PM EST	River Flood Warning	BOX	6 hr
Feb 17, 7:03 PM EST	Wind Advisory	BOX	20 hr
Feb 18, 11:33 AM EST	River Flood Warning	BOX	47 hr
Feb 21, 11:46 AM EST	Winter Storm Watch	BOX	4 hr
Feb 21, 4:09 PM EST	Winter Storm Warning	BOX	33 hr
Feb 22, 12:51 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 29, 5:08 AM EST	Snow Advisory	BOX	31 hr
Mar 4, 4:32 PM EST	Wind Advisory	BOX	21 hr
Mar 6, 4:46 PM EST	Flood Watch	BOX	54 hr
Mar 8, 11:30 AM EST	Wind Advisory	BOX	26 hr
Mar 8, 11:33 AM EST	High Wind Warning	BOX	19 hr
Mar 8, 6:48 PM EST	Mesoscale Discussion	SPC	57 min
Mar 9, 3:17 AM EDT	River Flood Warning	BOX	4 days
Mar 20, 4:23 PM EDT	Wind Advisory	BOX	27 hr
Mar 21, 2:27 PM EDT	High Wind Warning	BOX	5 hr
Apr 1, 3:34 AM EDT	Wind Advisory	BOX	16 hr
Apr 1, 4:10 PM EDT	Wind Advisory	BOX	24 hr
Apr 23, 3:15 PM EDT	Fire Weather Watch	BOX	13 hr
Apr 24, 4:28 AM EDT	Red Flag Warning	BOX	14 hr
Apr 29, 4:51 AM EDT	Frost Advisory	BOX	25 hr
Apr 30, 5:29 AM EDT	Freeze Watch	BOX	9 hr
Apr 30, 2:19 PM EDT	Frost Advisory	BOX	17 hr
May 5, 4:44 AM EDT	Dense Fog Advisory	BOX	2 hr
May 12, 3:46 AM EDT	Wind Advisory	BOX	32 hr
May 25, 4:33 PM EDT	Fire Weather Watch	BOX	11 hr
May 26, 3:28 AM EDT	Red Flag Warning	BOX	17 hr
May 27, 12:24 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 27, 2:45 PM EDT	Mesoscale Discussion	SPC	90 min
May 27, 5:58 PM EDT	Areal Flood Advisory	BOX	3 hr
May 27, 6:05 PM EDT	Severe Thunderstorm Warning	BOX	25 min
May 28, 4:40 PM EDT	Fire Weather Watch	BOX	12 hr
May 29, 4:46 AM EDT	Red Flag Warning	BOX	13 hr
Jun 8, 12:39 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 9, 5:12 AM EDT	Excessive Heat Watch	BOX	23 hr
Jun 9, 5:12 AM EDT	Heat Advisory	BOX	12 hr
Jun 10, 4:21 AM EDT	Heat Advisory	BOX	14 hr
Jun 10, 11:09 PM EDT	Severe Thunderstorm Warning	BOX	54 min
Jun 10, 11:57 PM EDT	Severe Thunderstorm Warning	BOX	33 min
Jun 17, 10:44 AM EDT	Mesoscale Discussion	SPC	61 min
Jun 17, 3:26 PM EDT	Severe Thunderstorm Warning	BOX	23 min
Jun 17, 3:39 PM EDT	Severe Thunderstorm Warning	BOX	36 min
Jun 17, 5:43 PM EDT	Severe Thunderstorm Warning	BOX	32 min
Jun 23, 5:22 PM EDT	Areal Flood Advisory	BOX	113 min
Jun 24, 12:07 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 24, 1:35 PM EDT	Severe Thunderstorm Warning	BOX	32 min
Jun 24, 2:01 PM EDT	Severe Thunderstorm Warning	BOX	59 min
Jun 24, 2:40 PM EDT	Flash Flood Warning	BOX	95 min
Jun 24, 4:59 PM EDT	Severe Thunderstorm Warning	BOX	31 min
Jun 24, 5:22 PM EDT	Severe Thunderstorm Warning	BOX	38 min
Jun 24, 5:36 PM EDT	Flash Flood Warning	BOX	24 min
Jun 27, 1:35 PM EDT	Severe Thunderstorm Warning	BOX	25 min
Jun 27, 1:56 PM EDT	Severe Thunderstorm Warning	BOX	49 min
Jun 27, 2:12 PM EDT	Severe Thunderstorm Warning	BOX	33 min
Jun 27, 2:14 PM EDT	Areal Flood Advisory	BOX	46 min
Jun 28, 10:45 PM EDT	Dense Fog Advisory	BOX	9 hr
Jul 1, 12:19 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 1, 5:38 PM EDT	Severe Thunderstorm Warning	BOX	23 min
Jul 1, 8:24 PM EDT	Severe Thunderstorm Warning	BOX	29 min
Jul 1, 8:49 PM EDT	Severe Thunderstorm Warning	BOX	41 min
Jul 2, 12:13 PM EDT	Severe Thunderstorm Warning	BOX	47 min
Jul 2, 12:18 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 2, 12:55 PM EDT	Severe Thunderstorm Warning	BOX	50 min
Jul 2, 12:57 PM EDT	Severe Thunderstorm Warning	BOX	48 min
Jul 2, 2:34 PM EDT	Severe Thunderstorm Warning	BOX	41 min
Jul 2, 2:50 PM EDT	Severe Thunderstorm Warning	BOX	40 min
Jul 2, 3:25 PM EDT	Severe Thunderstorm Warning	BOX	24 min
Jul 2, 6:14 PM EDT	Severe Thunderstorm Warning	BOX	16 min
Jul 3, 6:31 PM EDT	Severe Thunderstorm Warning	BOX	29 min
Jul 3, 6:55 PM EDT	Severe Thunderstorm Warning	BOX	35 min
Jul 6, 12:53 AM EDT	Dense Fog Advisory	BOX	4 hr
Jul 18, 7:30 PM EDT	Mesoscale Discussion	SPC	90 min
Jul 19, 1:26 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 20, 2:11 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 20, 3:06 PM EDT	Severe Thunderstorm Warning	BOX	24 min
Jul 20, 3:32 PM EDT	Severe Thunderstorm Warning	BOX	13 min
Jul 20, 3:53 PM EDT	Severe Thunderstorm Warning	BOX	22 min
Jul 20, 4:26 PM EDT	Severe Thunderstorm Warning	BOX	34 min
Jul 20, 7:27 PM EDT	Mesoscale Discussion	SPC	63 min
Jul 21, 3:05 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 23, 2:18 PM EDT	Flood Watch	BOX	36 hr
Jul 23, 2:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 3:50 PM EDT	Severe Thunderstorm Warning	BOX	44 min
Jul 23, 4:47 PM EDT	Flash Flood Warning	BOX	88 min
Jul 23, 8:55 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 23, 8:59 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 23, 9:26 PM EDT	Mesoscale Discussion	SPC	64 min
Jul 23, 9:50 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 24, 12:07 AM EDT	Mesoscale Discussion	SPC	53 min
Jul 24, 7:11 AM EDT	Areal Flood Advisory	BOX	3 hr
Jul 24, 10:40 AM EDT	Mesoscale Discussion	SPC	2 hr
Jul 24, 11:31 AM EDT	Areal Flood Advisory	BOX	89 min
Jul 24, 12:19 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 24, 3:49 PM EDT	Mesoscale Discussion	SPC	116 min
Jul 24, 5:53 PM EDT	Areal Flood Advisory	BOX	3 hr
Jul 27, 3:41 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 27, 4:30 PM EDT	Severe Thunderstorm Warning	BOX	60 min
Jul 27, 5:25 PM EDT	Severe Thunderstorm Warning	BOX	50 min
Jul 28, 1:58 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 12:38 PM EDT	Mesoscale Discussion	SPC	97 min
Aug 2, 12:32 PM EDT	Mesoscale Discussion	SPC	88 min
Aug 2, 3:42 PM EDT	Areal Flood Advisory	BOX	3 hr
Aug 3, 10:27 AM EDT	Mesoscale Discussion	SPC	3 hr
Aug 3, 4:10 PM EDT	Severe Thunderstorm Warning	BOX	29 min
Aug 3, 6:03 PM EDT	Severe Thunderstorm Warning	BOX	42 min
Aug 3, 6:45 PM EDT	Severe Thunderstorm Warning	BOX	39 min
Aug 7, 2:06 PM EDT	Severe Thunderstorm Warning	BOX	39 min
Aug 7, 3:17 PM EDT	Areal Flood Advisory	BOX	2 hr
Aug 7, 5:42 PM EDT	Severe Thunderstorm Warning	BOX	18 min
Aug 7, 11:34 PM EDT	Severe Thunderstorm Warning	BOX	41 min
Aug 8, 12:01 AM EDT	Areal Flood Advisory	BOX	3 hr
Aug 8, 5:22 PM EDT	Areal Flood Advisory	BOX	2 hr
Aug 8, 6:30 PM EDT	Areal Flood Advisory	BOX	119 min
Aug 10, 3:09 PM EDT	Severe Thunderstorm Warning	BOX	39 min
Aug 10, 5:50 PM EDT	Areal Flood Advisory	BOX	2 hr
Aug 11, 12:16 AM EDT	Areal Flood Advisory	BOX	5 hr
Aug 11, 10:56 AM EDT	Mesoscale Discussion	SPC	2 hr
Aug 11, 12:00 PM EDT	Areal Flood Advisory	BOX	3 hr
Aug 11, 1:14 PM EDT	Flash Flood Watch	BOX	15 min
Aug 11, 1:34 PM EDT	Flash Flood Watch	BOX	8 hr
Aug 15, 2:47 PM EDT	Mesoscale Discussion	SPC	88 min
Aug 15, 3:05 PM EDT	Areal Flood Advisory	BOX	3 hr
Aug 15, 3:31 PM EDT	Areal Flood Warning	BOX	3 hr
Aug 15, 3:48 PM EDT	Severe Thunderstorm Warning	BOX	42 min
Aug 15, 3:51 PM EDT	Severe Thunderstorm Warning	BOX	39 min
Aug 15, 4:55 PM EDT	Areal Flood Advisory	BOX	3 hr
Aug 15, 8:16 PM EDT	Areal Flood Advisory	BOX	2 hr
Sep 4, 5:00 AM EDT	Tropical Storm Watch	NHC	48 hr
Sep 4, 5:00 PM EDT	Tropical Storm Warning	NHC	60 hr
Sep 5, 2:16 PM EDT	Flash Flood Watch	BOX	37 hr
Sep 5, 5:30 PM EDT	Inland Tropical Storm Watch	BOX	41 hr
Sep 5, 5:30 PM EDT	Tropical Storm Watch	BOX	24 hr
Sep 6, 2:43 PM EDT	Areal Flood Advisory	BOX	3 hr
Sep 6, 5:13 PM EDT	Areal Flood Advisory	BOX	6 hr
Sep 6, 9:30 PM EDT	Areal Flood Warning	BOX	8 hr
Sep 6, 10:25 PM EDT	Areal Flood Warning	BOX	7 hr
Sep 9, 11:39 AM EDT	Mesoscale Discussion	SPC	36 min
Sep 9, 11:40 AM EDT	Severe Thunderstorm Watch	SPC	3 hr
Sep 9, 12:11 PM EDT	Mesoscale Discussion	SPC	94 min
Sep 9, 12:12 PM EDT	Areal Flood Advisory	BOX	3 hr
Sep 9, 12:52 PM EDT	Severe Thunderstorm Warning	BOX	38 min
Sep 9, 12:57 PM EDT	Severe Thunderstorm Warning	BOX	48 min
Sep 25, 4:48 PM EDT	Flood Watch	BOX	67 hr
Sep 26, 3:02 PM EDT	Areal Flood Advisory	BOX	3 hr
Sep 27, 12:35 PM EDT	Areal Flood Advisory	BOX	6 hr
Sep 27, 4:37 PM EDT	Areal Flood Warning	BOX	4 hr
Sep 27, 6:45 PM EDT	Areal Flood Advisory	BOX	3 hr
Oct 1, 10:43 AM EDT	Mesoscale Discussion	SPC	62 min
Oct 1, 11:20 AM EDT	Severe Thunderstorm Warning	BOX	40 min
Oct 1, 4:36 PM EDT	Severe Thunderstorm Warning	BOX	24 min
Oct 1, 4:55 PM EDT	Severe Thunderstorm Warning	BOX	31 min
Oct 7, 4:07 PM EDT	Frost Advisory	BOX	16 hr
Oct 18, 4:14 AM EDT	Freeze Warning	BOX	24 hr
Oct 18, 4:16 PM EDT	Freeze Watch	BOX	12 hr
Oct 19, 4:25 AM EDT	Freeze Warning	BOX	28 hr
Oct 20, 9:10 PM EDT	Frost Advisory	BOX	11 hr
Oct 22, 4:15 PM EDT	Freeze Watch	BOX	12 hr
Oct 23, 4:06 AM EDT	Freeze Warning	BOX	28 hr
Oct 25, 12:07 PM EDT	Wind Advisory	BOX	10 hr
Oct 25, 7:51 PM EDT	High Wind Warning	BOX	9 hr
Oct 26, 12:11 AM EDT	Areal Flood Advisory	BOX	3 hr
Oct 26, 2:27 AM EDT	Areal Flood Advisory	BOX	2 hr
Oct 27, 3:52 PM EDT	Wind Advisory	BOX	36 hr
Oct 30, 9:10 PM EDT	Freeze Warning	BOX	11 hr
Nov 15, 4:57 AM EST	Wind Advisory	BOX	18 hr
Nov 15, 4:58 AM EST	Areal Flood Advisory	BOX	6 hr
Nov 15, 11:41 AM EST	Coastal Flood Advisory	BOX	2 hr
Nov 15, 5:12 PM EST	Areal Flood Advisory	BOX	3 hr
Nov 15, 6:55 PM EST	Tornado Watch	SPC	3 hr
Nov 15, 8:17 PM EST	High Wind Warning	BOX	4 hr
Nov 16, 4:22 AM EST	Wind Advisory	BOX	14 hr
Nov 24, 11:34 AM EST	High Wind Watch	BOX	16 hr
Nov 24, 3:29 PM EST	Wind Advisory	BOX	22 hr
Nov 25, 1:52 AM EST	Coastal Flood Advisory	BOX	9 hr
Nov 25, 7:26 AM EST	Areal Flood Advisory	BOX	6 hr
Nov 25, 11:06 AM EST	Flood Watch	BOX	3 hr
Dec 7, 2:38 AM EST	Wind Advisory	BOX	24 hr
Dec 9, 4:13 PM EST	Wind Advisory	BOX	30 hr
Dec 10, 3:51 PM EST	Flood Watch	BOX	43 hr
Dec 11, 4:55 AM EST	Wind Advisory	BOX	27 hr
Dec 12, 12:32 AM EST	Areal Flood Warning	BOX	6 hr
Dec 12, 5:55 AM EST	Areal Flood Warning	BOX	12 hr
Dec 12, 7:43 AM EST	High Wind Warning	BOX	3 hr
Dec 12, 8:40 AM EST	Wind Advisory	BOX	96 min
Dec 12, 5:52 PM EST	Areal Flood Warning	BOX	25 hr
Dec 14, 10:28 PM EST	River Flood Warning	BOX	4 days
Dec 16, 4:12 AM EST	Winter Weather Advisory	BOX	32 hr
Dec 17, 3:07 PM EST	Winter Storm Watch	BOX	24 hr
Dec 18, 3:07 PM EST	Winter Storm Warning	BOX	35 hr
Dec 19, 12:22 PM EST	Mesoscale Discussion	SPC	6 hr
Dec 19, 3:55 PM EST	Coastal Flood Advisory	BOX	15 hr
Dec 19, 6:46 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 20, 4:29 PM EST	Winter Weather Advisory	BOX	26 hr
Dec 21, 4:16 AM EST	Wind Advisory	BOX	31 hr
Dec 21, 11:47 PM EST	Winter Weather Advisory	BOX	12 hr
Dec 23, 4:02 PM EST	High Wind Watch	BOX	25 hr
Dec 24, 5:25 AM EST	Wind Advisory	BOX	29 hr
Dec 24, 10:32 PM EST	High Wind Warning	BOX	6 hr
Dec 28, 9:47 AM EST	Wind Advisory	BOX	8 hr
Dec 29, 3:54 PM EST	Wind Advisory	BOX	23 hr
Dec 30, 11:40 AM EST	Winter Storm Watch	BOX	5 hr
Dec 30, 4:55 PM EST	Winter Storm Warning	BOX	32 hr
Dec 31, 7:06 AM EST	Mesoscale Discussion	SPC	3 hr
Dec 31, 11:50 AM EST	Mesoscale Discussion	SPC	3 hr
Dec 31, 4:20 PM EST	Wind 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	46
Severe Thunderstorm Watch	7
Tornado Watch	1
Mesoscale Discussion	30
Flooding
Areal Flood Warning	7
Flash Flood Warning	3
River Flood Warning	4
Flash Flood Watch	3
Flood Watch	6
Areal Flood Advisory	31
Winter
Heavy Snow Warning	1
Winter Storm Warning	5
Winter Storm Watch	4
Snow Advisory	2
Winter Weather Advisory	5
Heat
Excessive Heat Watch	1
Heat Advisory	2
Cold
Freeze Warning	4
Freeze Watch	3
Frost Advisory	4
Wind and dust
High Wind Warning	6
High Wind Watch	2
Wind Advisory	27
Fire
Red Flag Warning	3
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	4
Tropical
Tropical Storm Warning	1
Inland Tropical Storm Watch	1
Tropical Storm Watch	2
Coast and beach
Coastal Flood Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2007 2009

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.