Alert archive / Maine / Penobscot County

Weather alerts in Penobscot County, Maine, 2011

186 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Penobscot County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts: 186
Warnings: 63
Watches: 35
Advisories: 59
Busiest month: July29 alerts
Busiest day: June 1, 20119 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 2 tornado warnings covering Penobscot County in 2011 had a tornado report inside them.

Penobscot County, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	0	100%	0
Severe thunderstorm warnings	37	22	41%	21	86%	24 min
Flash flood warnings	4	3	25%	1	100%	53 min

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Caribou, ME: tornado warnings	10	3	70%	3	100%	19 min
NWS Caribou, ME: severe thunderstorm warnings	111	63	43%	153	86%	26 min
NWS Caribou, ME: flash flood warnings	11	9	18%	21	95%	68 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, 9:27 AM EST	Dense Fog Advisory	CAR	5 hr
Jan 7, 3:21 PM EST	Winter Weather Advisory	CAR	20 hr
Jan 11, 3:53 AM EST	Winter Storm Watch	CAR	11 hr
Jan 11, 3:04 PM EST	Winter Storm Warning	CAR	34 hr
Jan 11, 3:04 PM EST	Winter Weather Advisory	CAR	18 hr
Jan 12, 9:23 AM EST	Winter Weather Advisory	CAR	16 hr
Jan 17, 3:10 AM EST	Winter Storm Watch	CAR	26 hr
Jan 18, 4:43 AM EST	Winter Weather Advisory	CAR	26 hr
Jan 20, 6:08 AM EST	Winter Storm Watch	CAR	10 hr
Jan 20, 3:51 PM EST	Winter Storm Warning	CAR	30 hr
Jan 20, 3:51 PM EST	Winter Weather Advisory	CAR	12 hr
Jan 21, 12:36 PM EST	Mesoscale Discussion	SPC	3 hr
Jan 22, 4:00 PM EST	Wind Chill Watch	CAR	24 hr
Jan 23, 4:02 AM EST	Wind Chill Warning	CAR	32 hr
Jan 23, 4:02 AM EST	Wind Chill Advisory	CAR	12 hr
Jan 24, 11:32 AM EST	Wind Chill Advisory	CAR	9 hr
Jan 26, 3:32 PM EST	Winter Weather Advisory	CAR	21 hr
Jan 31, 3:01 PM EST	Winter Storm Watch	CAR	14 hr
Feb 1, 4:41 AM EST	Winter Storm Watch	CAR	10 hr
Feb 1, 4:41 AM EST	Winter Storm Warning	CAR	48 hr
Feb 1, 3:02 PM EST	Winter Weather Advisory	CAR	37 hr
Feb 2, 10:00 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 4, 3:35 PM EST	Winter Storm Watch	CAR	12 hr
Feb 5, 3:56 AM EST	Winter Storm Warning	CAR	29 hr
Feb 7, 3:28 PM EST	Winter Weather Advisory	CAR	30 hr
Feb 8, 3:32 PM EST	Wind Chill Advisory	CAR	17 hr
Feb 13, 10:07 AM EST	Winter Weather Advisory	CAR	37 hr
Feb 14, 2:49 PM EST	Wind Advisory	CAR	26 hr
Feb 14, 3:08 PM EST	Wind Chill Advisory	CAR	36 hr
Feb 15, 3:28 AM EST	Winter Weather Advisory	CAR	14 hr
Feb 17, 3:14 PM EST	Winter Weather Advisory	CAR	23 hr
Feb 18, 8:56 PM EST	Dense Fog Advisory	CAR	6 hr
Feb 23, 3:39 PM EST	Winter Storm Watch	CAR	55 days
Feb 24, 4:03 PM EST	Winter Storm Warning	CAR	32 hr
Feb 25, 12:36 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 26, 12:09 AM EST	Winter Weather Advisory	CAR	10 hr
Feb 27, 4:37 AM EST	Winter Storm Watch	CAR	16 hr
Feb 27, 8:21 PM EST	Winter Storm Warning	CAR	23 hr
Feb 27, 8:21 PM EST	Winter Weather Advisory	CAR	23 hr
Mar 2, 10:07 AM EST	Winter Weather Advisory	CAR	8 hr
Mar 5, 5:02 AM EST	Winter Storm Watch	CAR	24 hr
Mar 6, 4:33 AM EST	Winter Storm Warning	CAR	35 hr
Mar 6, 4:33 AM EST	Winter Weather Advisory	CAR	30 hr
Mar 6, 1:04 PM EST	Flood Watch	CAR	26 hr
Mar 7, 7:24 AM EST	Mesoscale Discussion	SPC	4 hr
Mar 10, 3:32 AM EST	Winter Weather Advisory	CAR	30 hr
Mar 10, 3:04 PM EST	Flood Watch	CAR	43 hr
Mar 13, 9:02 AM EDT	Areal Flood Warning	CAR	9 hr
Mar 13, 3:27 PM EDT	Areal Flood Warning	CAR	20 hr
Mar 14, 10:06 AM EDT	Areal Flood Warning	CAR	48 hr
Mar 14, 11:17 AM EDT	Areal Flood Warning	CAR	24 hr
Mar 15, 12:26 PM EDT	Areal Flood Advisory	CAR	24 hr
Mar 16, 10:09 AM EDT	Areal Flood Warning	CAR	26 hr
Mar 16, 2:16 PM EDT	Areal Flood Advisory	CAR	24 hr
Mar 17, 11:40 AM EDT	Areal Flood Warning	CAR	12 hr
Mar 17, 2:05 PM EDT	Areal Flood Advisory	CAR	24 hr
Mar 17, 8:36 PM EDT	Wind Advisory	CAR	23 hr
Mar 18, 2:02 PM EDT	Areal Flood Advisory	CAR	6 hr
Mar 18, 8:33 PM EDT	Areal Flood Advisory	CAR	12 hr
Mar 20, 2:50 PM EDT	Winter Storm Watch	CAR	14 hr
Mar 21, 4:39 AM EDT	Winter Weather Advisory	CAR	31 hr
Mar 30, 12:26 PM EDT	Winter Storm Watch	CAR	16 hr
Mar 31, 4:47 AM EDT	Winter Storm Warning	CAR	50 hr
Apr 1, 11:46 AM EDT	Mesoscale Discussion	SPC	4 hr
Apr 4, 3:34 PM EDT	Wind Advisory	CAR	24 hr
Apr 4, 7:09 PM EDT	Winter Weather Advisory	CAR	3 hr
Apr 11, 5:26 PM EDT	Dense Fog Advisory	CAR	11 hr
Apr 12, 9:47 AM EDT	Wind Advisory	CAR	6 hr
Apr 15, 3:54 PM EDT	High Wind Watch	CAR	24 hr
Apr 15, 3:55 PM EDT	Flood Watch	CAR	54 hr
Apr 16, 3:43 PM EDT	High Wind Warning	CAR	22 hr
Apr 16, 3:43 PM EDT	Wind Advisory	CAR	20 hr
Apr 20, 3:52 AM EDT	Winter Weather Advisory	CAR	20 hr
May 3, 1:13 PM EDT	Flood Watch	CAR	69 hr
May 27, 1:18 PM EDT	Mesoscale Discussion	SPC	87 min
May 27, 2:00 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
May 27, 5:49 PM EDT	Mesoscale Discussion	SPC	56 min
May 27, 7:13 PM EDT	Severe Thunderstorm Warning	CAR	32 min
May 27, 7:19 PM EDT	Severe Thunderstorm Warning	CAR	26 min
May 27, 7:36 PM EDT	Severe Thunderstorm Warning	CAR	39 min
May 27, 9:39 PM EDT	Areal Flood Advisory	CAR	3 hr
Jun 1, 9:57 AM EDT	Severe Thunderstorm Warning	CAR	37 min
Jun 1, 2:19 PM EDT	Mesoscale Discussion	SPC	86 min
Jun 1, 2:37 PM EDT	Tornado Watch	SPC	5 hr
Jun 1, 3:32 PM EDT	Tornado Warning	CAR	28 min
Jun 1, 3:59 PM EDT	Tornado Warning	CAR	46 min
Jun 1, 4:31 PM EDT	Severe Thunderstorm Warning	CAR	30 min
Jun 1, 7:09 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 1, 7:40 PM EDT	Tornado Watch	SPC	2 hr
Jun 1, 7:44 PM EDT	Severe Thunderstorm Warning	CAR	46 min
Jun 1, 8:10 PM EDT	Severe Thunderstorm Warning	CAR	50 min
Jun 1, 8:41 PM EDT	Severe Thunderstorm Warning	CAR	29 min
Jun 1, 9:16 PM EDT	Severe Thunderstorm Warning	CAR	29 min
Jun 1, 9:43 PM EDT	Mesoscale Discussion	SPC	92 min
Jun 8, 6:41 PM EDT	Mesoscale Discussion	SPC	94 min
Jun 8, 7:27 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 9, 12:06 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 9, 2:19 PM EDT	Severe Thunderstorm Warning	CAR	41 min
Jun 9, 3:18 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 9, 6:22 PM EDT	Severe Thunderstorm Warning	CAR	38 min
Jun 9, 7:00 PM EDT	Severe Thunderstorm Warning	CAR	45 min
Jun 9, 7:17 PM EDT	Mesoscale Discussion	SPC	58 min
Jun 16, 4:36 PM EDT	Severe Thunderstorm Warning	CAR	54 min
Jun 16, 5:13 PM EDT	Severe Thunderstorm Warning	CAR	47 min
Jun 16, 5:54 PM EDT	Severe Thunderstorm Warning	CAR	51 min
Jul 4, 11:31 AM EDT	Mesoscale Discussion	SPC	89 min
Jul 4, 12:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 4, 2:41 PM EDT	Severe Thunderstorm Warning	CAR	49 min
Jul 4, 2:48 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 4, 3:29 PM EDT	Severe Thunderstorm Warning	CAR	46 min
Jul 4, 4:12 PM EDT	Severe Thunderstorm Warning	CAR	33 min
Jul 5, 1:01 AM EDT	Dense Fog Advisory	CAR	8 hr
Jul 6, 5:35 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 6, 6:03 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 6, 6:32 PM EDT	Severe Thunderstorm Warning	CAR	58 min
Jul 6, 6:42 PM EDT	Severe Thunderstorm Warning	CAR	63 min
Jul 6, 7:06 PM EDT	Severe Thunderstorm Warning	CAR	54 min
Jul 6, 7:12 PM EDT	Severe Thunderstorm Warning	CAR	63 min
Jul 11, 4:45 PM EDT	Mesoscale Discussion	SPC	60 min
Jul 11, 5:01 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 11, 5:08 PM EDT	Severe Thunderstorm Warning	CAR	67 min
Jul 11, 6:17 PM EDT	Severe Thunderstorm Warning	CAR	43 min
Jul 20, 8:16 PM EDT	Severe Thunderstorm Warning	CAR	44 min
Jul 20, 8:58 PM EDT	Severe Thunderstorm Warning	CAR	25 min
Jul 20, 9:09 PM EDT	Mesoscale Discussion	SPC	96 min
Jul 21, 12:36 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 21, 3:43 PM EDT	Severe Thunderstorm Warning	CAR	32 min
Jul 21, 4:33 PM EDT	Mesoscale Discussion	SPC	57 min
Jul 21, 8:50 PM EDT	Mesoscale Discussion	SPC	85 min
Jul 22, 3:42 AM EDT	Heat Advisory	CAR	14 hr
Jul 23, 2:26 PM EDT	Mesoscale Discussion	SPC	64 min
Jul 23, 4:08 PM EDT	Severe Thunderstorm Warning	CAR	67 min
Jul 23, 4:40 PM EDT	Severe Thunderstorm Warning	CAR	65 min
Jul 23, 4:46 PM EDT	Mesoscale Discussion	SPC	59 min
Aug 1, 5:08 PM EDT	Severe Thunderstorm Warning	CAR	67 min
Aug 1, 8:30 PM EDT	Severe Thunderstorm Warning	CAR	45 min
Aug 2, 9:22 AM EDT	Flash Flood Warning	CAR	113 min
Aug 2, 10:05 AM EDT	Flash Flood Warning	CAR	2 hr
Aug 2, 10:42 AM EDT	Mesoscale Discussion	SPC	63 min
Aug 2, 12:05 PM EDT	Areal Flood Advisory	CAR	3 hr
Aug 2, 5:25 PM EDT	Severe Thunderstorm Warning	CAR	50 min
Aug 20, 1:50 PM EDT	Severe Thunderstorm Warning	CAR	40 min
Aug 21, 3:24 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 21, 4:33 PM EDT	Severe Thunderstorm Warning	CAR	42 min
Aug 26, 5:02 PM EDT	Tropical Storm Watch	CAR	19 hr
Aug 26, 5:27 PM EDT	Flood Watch	CAR	54 hr
Aug 27, 11:46 AM EDT	Tropical Storm Warning	CAR	36 hr
Aug 28, 11:09 AM EDT	Flash Flood Warning	CAR	4 hr
Aug 28, 2:28 PM EDT	Flash Flood Warning	CAR	3 hr
Aug 28, 3:00 PM EDT	Areal Flood Warning	CAR	4 hr
Aug 28, 5:27 PM EDT	Areal Flood Warning	CAR	6 hr
Aug 28, 11:20 PM EDT	High Wind Warning	CAR	12 hr
Aug 29, 9:23 AM EDT	Areal Flood Advisory	CAR	6 hr
Sep 4, 1:01 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 4, 3:18 PM EDT	Flood Watch	CAR	43 hr
Sep 4, 4:07 PM EDT	Mesoscale Discussion	SPC	53 min
Sep 9, 12:26 AM EDT	Dense Fog Advisory	CAR	9 hr
Sep 10, 5:03 AM EDT	Frost Advisory	CAR	26 hr
Sep 16, 3:35 AM EDT	Freeze Watch	CAR	23 hr
Sep 17, 2:43 AM EDT	Frost Advisory	CAR	28 hr
Sep 17, 2:43 AM EDT	Freeze Warning	CAR	28 hr
Sep 18, 3:52 PM EDT	Frost Advisory	CAR	14 hr
Sep 25, 3:48 AM EDT	Dense Fog Advisory	CAR	4 hr
Oct 15, 3:22 AM EDT	Wind Advisory	CAR	12 hr
Oct 28, 3:43 AM EDT	Winter Storm Watch	CAR	34 hr
Oct 29, 3:35 AM EDT	Winter Storm Warning	CAR	33 hr
Oct 29, 7:49 PM EDT	Mesoscale Discussion	SPC	5 hr
Oct 30, 12:57 PM EDT	Wind Advisory	CAR	7 hr
Nov 21, 5:00 PM EST	Winter Storm Watch	CAR	22 hr
Nov 22, 3:27 PM EST	Winter Storm Warning	CAR	27 hr
Nov 22, 3:27 PM EST	Winter Weather Advisory	CAR	27 hr
Nov 23, 7:48 AM EST	Mesoscale Discussion	SPC	5 hr
Dec 7, 3:15 PM EST	Winter Weather Advisory	CAR	18 hr
Dec 7, 10:25 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 8, 3:45 AM EST	Wind Advisory	CAR	12 hr
Dec 14, 2:54 PM EST	High Wind Watch	CAR	12 hr
Dec 14, 3:02 PM EST	Winter Weather Advisory	CAR	24 hr
Dec 15, 3:01 AM EST	Wind Advisory	CAR	17 hr
Dec 16, 2:30 AM EST	Wind Advisory	CAR	13 hr
Dec 21, 3:35 AM EST	Winter Weather Advisory	CAR	24 hr
Dec 25, 10:24 AM EST	Winter Weather Advisory	CAR	17 hr
Dec 27, 4:34 AM EST	Wind Advisory	CAR	28 hr
Dec 27, 7:50 PM EST	Freezing Rain Advisory	CAR	7 hr
Dec 30, 4:09 AM EST	Winter Weather Advisory	CAR	39 hr
Dec 31, 8:33 AM EST	Mesoscale Discussion	SPC	4 hr
Dec 31, 12:16 PM EST	Mesoscale Discussion	SPC	4 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	34
Tornado Warning	2
Severe Thunderstorm Watch	9
Tornado Watch	2
Mesoscale Discussion	29
Flooding
Areal Flood Warning	8
Flash Flood Warning	4
Flood Watch	6
Areal Flood Advisory	8
Winter
Winter Storm Warning	10
Winter Storm Watch	13
Freezing Rain Advisory	1
Winter Weather Advisory	25
Heat
Heat Advisory	1
Cold
Freeze Warning	1
Wind Chill Warning	1
Freeze Watch	1
Wind Chill Watch	1
Frost Advisory	3
Wind Chill Advisory	4
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	11
Fog and smoke
Dense Fog Advisory	6
Tropical
Tropical Storm Warning	1
Tropical Storm Watch	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 2010 2012

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.