Weather alerts in Hancock County, Maine, 2009

127 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Hancock County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 127
Warnings: 27
Watches: 24
Advisories: 71
Busiest month: December28 alerts
Busiest day: July 3, 20094 alerts

Over time

By month

Warning verification

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

Hancock County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	2	1	50%	2	100%	37 min
Flash flood warnings	4	4	0%	5	100%	50 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Caribou, ME: tornado warnings	3	3	0%	13	92%	16 min
NWS Caribou, ME: severe thunderstorm warnings	52	19	63%	43	93%	28 min
NWS Caribou, ME: flash flood warnings	16	8	50%	21	100%	65 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, 3:40 PM EST	Wind Chill Advisory	CAR	15 hr
Jan 6, 3:40 PM EST	Winter Weather Advisory	CAR	36 hr
Jan 7, 11:39 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 10, 3:29 AM EST	Winter Storm Watch	CAR	11 hr
Jan 10, 2:55 PM EST	Winter Weather Advisory	CAR	24 hr
Jan 14, 4:22 AM EST	Wind Chill Advisory	CAR	62 hr
Jan 17, 4:09 AM EST	Winter Storm Watch	CAR	11 hr
Jan 17, 2:48 PM EST	Winter Storm Warning	CAR	43 hr
Jan 18, 11:35 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 24, 4:06 AM EST	Wind Chill Advisory	CAR	30 hr
Jan 26, 3:20 PM EST	Winter Storm Watch	CAR	20 hr
Jan 27, 11:21 AM EST	Winter Storm Warning	CAR	43 hr
Jan 28, 12:26 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 3, 2:33 AM EST	Winter Weather Advisory	CAR	24 hr
Feb 10, 2:46 PM EST	Winter Weather Advisory	CAR	17 hr
Feb 12, 3:47 AM EST	Dense Fog Advisory	CAR	8 hr
Feb 17, 2:57 PM EST	Winter Storm Watch	CAR	23 hr
Feb 18, 2:24 PM EST	Winter Weather Advisory	CAR	32 hr
Feb 19, 10:17 AM EST	Wind Advisory	CAR	5 hr
Feb 20, 3:13 PM EST	Winter Storm Watch	CAR	24 hr
Feb 21, 3:35 PM EST	Winter Storm Warning	CAR	48 hr
Feb 23, 4:42 PM EST	Winter Weather Advisory	CAR	5 hr
Feb 26, 3:52 PM EST	High Wind Watch	CAR	13 hr
Feb 27, 4:32 AM EST	High Wind Warning	CAR	23 hr
Feb 27, 4:32 AM EST	Wind Advisory	CAR	23 hr
Feb 27, 5:10 AM EST	Dense Fog Advisory	CAR	4 hr
Feb 28, 2:58 PM EST	Winter Storm Watch	CAR	31 hr
Mar 1, 3:18 PM EST	Winter Storm Warning	CAR	32 hr
Mar 6, 4:23 AM EST	Winter Weather Advisory	CAR	18 hr
Mar 10, 3:49 PM EDT	High Wind Watch	CAR	12 hr
Mar 11, 4:00 AM EDT	Wind Advisory	CAR	11 hr
Mar 12, 12:03 AM EDT	Wind Advisory	CAR	7 hr
Mar 23, 3:45 PM EDT	Wind Advisory	CAR	18 hr
Mar 28, 4:17 AM EDT	Dense Fog Advisory	CAR	6 hr
Mar 29, 8:12 AM EDT	Dense Fog Advisory	CAR	2 hr
Apr 2, 4:17 PM EDT	Flood Watch	CAR	70 hr
Apr 2, 8:18 PM EDT	Dense Fog Advisory	CAR	14 hr
Apr 3, 5:15 AM EDT	Wind Advisory	CAR	17 hr
Apr 4, 7:58 AM EDT	Dense Fog Advisory	CAR	4 hr
Apr 5, 3:53 PM EDT	High Wind Watch	CAR	12 hr
Apr 5, 3:56 PM EDT	Flood Watch	CAR	3 days
Apr 6, 4:03 AM EDT	High Wind Warning	CAR	26 hr
Apr 6, 4:03 AM EDT	Wind Advisory	CAR	11 hr
Apr 20, 10:06 PM EDT	Wind Advisory	CAR	31 hr
May 13, 2:39 PM EDT	Wind Advisory	CAR	22 hr
May 14, 1:04 PM EDT	High Wind Warning	CAR	9 hr
May 18, 4:47 AM EDT	Frost Advisory	CAR	24 hr
May 25, 4:00 AM EDT	Frost Advisory	CAR	23 hr
May 29, 10:12 PM EDT	Dense Fog Advisory	CAR	11 hr
Jun 5, 5:24 AM EDT	Dense Fog Advisory	CAR	4 hr
Jun 12, 5:53 AM EDT	Areal Flood Advisory	CAR	6 hr
Jun 19, 3:05 PM EDT	Areal Flood Advisory	CAR	7 hr
Jun 20, 8:07 AM EDT	Areal Flood Warning	CAR	15 hr
Jun 22, 2:59 PM EDT	Coastal Flood Advisory	CAR	10 hr
Jun 25, 3:38 AM EDT	Dense Fog Advisory	CAR	5 hr
Jun 25, 9:18 PM EDT	Dense Fog Advisory	CAR	12 hr
Jun 27, 3:37 PM EDT	Dense Fog Advisory	CAR	20 hr
Jun 30, 4:02 AM EDT	Dense Fog Advisory	CAR	5 hr
Jun 30, 2:53 PM EDT	Dense Fog Advisory	CAR	15 hr
Jul 1, 4:09 PM EDT	Dense Fog Advisory	CAR	13 hr
Jul 3, 2:14 AM EDT	Flash Flood Warning	CAR	2 hr
Jul 3, 2:19 AM EDT	Severe Thunderstorm Warning	CAR	41 min
Jul 3, 3:04 AM EDT	Severe Thunderstorm Warning	CAR	56 min
Jul 3, 3:50 AM EDT	Flash Flood Warning	CAR	115 min
Jul 4, 3:48 AM EDT	Dense Fog Advisory	CAR	7 hr
Jul 4, 4:57 PM EDT	Flash Flood Warning	CAR	3 hr
Jul 12, 11:29 PM EDT	Areal Flood Advisory	CAR	27 min
Jul 12, 11:54 PM EDT	Flash Flood Warning	CAR	115 min
Jul 17, 8:05 AM EDT	Dense Fog Advisory	CAR	3 hr
Jul 23, 3:20 PM EDT	Flood Watch	CAR	21 hr
Jul 26, 1:10 AM EDT	Dense Fog Advisory	CAR	7 hr
Jul 26, 8:17 PM EDT	Dense Fog Advisory	CAR	11 hr
Aug 5, 2:16 PM EDT	Mesoscale Discussion	SPC	59 min
Aug 20, 4:05 PM EDT	Coastal Flood Watch	CAR	47 hr
Aug 21, 5:21 AM EDT	Dense Fog Advisory	CAR	5 hr
Aug 21, 5:41 PM EDT	Severe Thunderstorm Watch	SPC	2 hr
Aug 22, 3:14 PM EDT	High Surf Advisory	CAR	36 hr
Aug 28, 4:09 AM EDT	Flood Watch	CAR	47 hr
Aug 29, 8:15 PM EDT	Areal Flood Warning	CAR	8 hr
Aug 29, 9:25 PM EDT	Wind Advisory	CAR	2 hr
Sep 16, 2:51 AM EDT	Frost Advisory	CAR	13 hr
Sep 16, 2:51 AM EDT	Freeze Warning	CAR	29 hr
Sep 16, 3:51 PM EDT	Frost Advisory	CAR	16 hr
Sep 19, 3:47 PM EDT	Frost Advisory	CAR	14 hr
Sep 25, 3:31 AM EDT	Frost Advisory	CAR	6 hr
Sep 25, 3:31 AM EDT	Freeze Warning	CAR	28 hr
Sep 27, 3:17 AM EDT	Wind Advisory	CAR	20 hr
Sep 27, 11:04 PM EDT	High Wind Warning	CAR	7 hr
Oct 3, 3:15 PM EDT	Flood Watch	CAR	24 hr
Oct 23, 4:30 AM EDT	High Wind Watch	CAR	12 hr
Oct 23, 4:08 PM EDT	High Wind Warning	CAR	38 hr
Oct 23, 4:08 PM EDT	Wind Advisory	CAR	36 hr
Oct 30, 3:32 PM EDT	High Wind Watch	CAR	11 hr
Oct 31, 2:59 AM EDT	High Wind Warning	CAR	21 hr
Oct 31, 2:59 AM EDT	Wind Advisory	CAR	21 hr
Nov 5, 1:20 PM EST	Winter Weather Advisory	CAR	12 hr
Nov 13, 1:55 PM EST	High Surf Advisory	CAR	47 hr
Nov 20, 11:52 AM EST	Wind Advisory	CAR	6 hr
Nov 28, 3:45 AM EST	Wind Advisory	CAR	14 hr
Dec 2, 3:54 AM EST	High Wind Watch	CAR	10 hr
Dec 2, 2:10 PM EST	Wind Advisory	CAR	14 hr
Dec 2, 2:16 PM EST	Coastal Flood Watch	CAR	19 hr
Dec 3, 3:51 AM EST	High Wind Warning	CAR	11 hr
Dec 3, 3:51 AM EST	Wind Advisory	CAR	7 hr
Dec 3, 9:12 AM EST	Coastal Flood Warning	CAR	4 hr
Dec 3, 11:55 AM EST	Areal Flood Warning	CAR	4 hr
Dec 5, 2:19 PM EST	Winter Storm Warning	CAR	17 hr
Dec 5, 2:19 PM EST	Winter Weather Advisory	CAR	17 hr
Dec 7, 3:33 PM EST	High Wind Watch	CAR	23 hr
Dec 8, 5:01 AM EST	Winter Storm Watch	CAR	11 hr
Dec 8, 2:58 PM EST	High Wind Warning	CAR	33 hr
Dec 8, 3:33 PM EST	Winter Storm Warning	CAR	35 hr
Dec 8, 3:33 PM EST	Winter Weather Advisory	CAR	28 hr
Dec 9, 12:41 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 9, 9:04 PM EST	Areal Flood Advisory	CAR	3 hr
Dec 11, 3:49 AM EST	Wind Advisory	CAR	15 hr
Dec 15, 4:06 AM EST	Winter Weather Advisory	CAR	21 hr
Dec 19, 3:06 PM EST	Winter Weather Advisory	CAR	27 hr
Dec 21, 5:12 AM EST	Winter Weather Advisory	CAR	8 hr
Dec 21, 3:34 PM EST	Winter Storm Watch	CAR	12 hr
Dec 22, 3:50 AM EST	Winter Storm Warning	CAR	39 hr
Dec 22, 3:38 PM EST	Winter Weather Advisory	CAR	27 hr
Dec 26, 3:35 PM EST	Wind Advisory	CAR	29 hr
Dec 26, 4:00 PM EST	Winter Weather Advisory	CAR	27 hr
Dec 27, 3:31 PM EST	Winter Storm Watch	CAR	13 hr
Dec 28, 4:19 AM EST	Winter Weather Advisory	CAR	27 hr
Dec 29, 4:10 AM EST	Wind Advisory	CAR	24 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	2
Severe Thunderstorm Watch	1
Mesoscale Discussion	5
Flooding
Areal Flood Warning	3
Flash Flood Warning	4
Flood Watch	5
Areal Flood Advisory	4
Winter
Winter Storm Warning	7
Winter Storm Watch	9
Winter Weather Advisory	16
Cold
Freeze Warning	2
Frost Advisory	6
Wind Chill Advisory	3
Wind and dust
High Wind Warning	8
High Wind Watch	7
Wind Advisory	20
Fog and smoke
Dense Fog Advisory	19
Coast and beach
Coastal Flood Warning	1
Coastal Flood Watch	2
Coastal Flood Advisory	1
High Surf Advisory	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 2008 2010

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.