Weather alerts in Somerset County, Maine, 2017

200 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Somerset County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts: 200
Warnings: 51
Watches: 28
Advisories: 76
Busiest month: July34 alerts
Busiest day: July 7, 201710 alerts

Over time

By month

Warning verification

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

Somerset County, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	9	3	67%	5	60%	17 min
Flash flood warnings	6	2	67%	2	100%	38 min

Each office's whole area, 2017

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Gray, ME: tornado warnings	7	3	57%	10	80%	16 min
NWS Gray, ME: severe thunderstorm warnings	88	66	25%	173	84%	27 min
NWS Gray, ME: flash flood warnings	25	14	44%	51	90%	92 min
NWS Caribou, ME: tornado warnings	0			2	0%
NWS Caribou, ME: severe thunderstorm warnings	40	21	48%	52	83%	22 min
NWS Caribou, ME: flash flood warnings	4	1	75%	4	75%	85 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, 3:17 AM EST	Winter Storm Watch	GYX	24 hr
Jan 2, 3:59 AM EST	Winter Storm Watch	CAR	12 hr
Jan 2, 3:38 PM EST	Winter Storm Warning	GYX	41 hr
Jan 2, 3:38 PM EST	Winter Weather Advisory	GYX	39 hr
Jan 2, 4:07 PM EST	Winter Storm Warning	CAR	45 hr
Jan 4, 2:16 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 4, 7:24 AM EST	Winter Weather Advisory	GYX	92 min
Jan 8, 3:13 PM EST	Wind Chill Warning	GYX	18 hr
Jan 8, 8:44 PM EST	Wind Chill Advisory	CAR	12 hr
Jan 10, 4:34 AM EST	Winter Weather Advisory	CAR	29 hr
Jan 10, 8:20 PM EST	Freezing Rain Advisory	GYX	4 hr
Jan 10, 10:48 PM EST	Winter Weather Advisory	GYX	8 hr
Jan 13, 3:08 AM EST	Wind Chill Advisory	GYX	29 hr
Jan 13, 4:25 AM EST	Wind Chill Advisory	CAR	29 hr
Jan 22, 3:18 PM EST	Winter Storm Watch	GYX	25 hr
Jan 22, 3:34 PM EST	Winter Storm Watch	CAR	24 hr
Jan 23, 3:18 AM EST	Winter Weather Advisory	GYX	48 hr
Jan 23, 3:15 PM EST	Winter Storm Warning	CAR	38 hr
Jan 23, 4:13 PM EST	Winter Storm Warning	GYX	35 hr
Jan 24, 5:44 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 24, 12:12 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 6, 1:40 PM EST	Winter Weather Advisory	CAR	43 hr
Feb 6, 3:09 PM EST	Winter Weather Advisory	GYX	42 hr
Feb 7, 3:16 PM EST	Winter Storm Warning	GYX	18 hr
Feb 8, 3:15 PM EST	Winter Storm Warning	GYX	31 hr
Feb 8, 3:15 PM EST	Winter Weather Advisory	GYX	18 hr
Feb 9, 9:28 AM EST	Winter Weather Advisory	GYX	11 hr
Feb 9, 8:49 PM EST	Wind Chill Advisory	GYX	13 hr
Feb 9, 11:11 PM EST	Wind Chill Advisory	CAR	11 hr
Feb 10, 3:45 PM EST	Winter Storm Watch	GYX	25 hr
Feb 11, 3:43 PM EST	Winter Weather Advisory	CAR	56 hr
Feb 11, 4:20 PM EST	Winter Storm Warning	GYX	51 hr
Feb 13, 7:10 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 14, 3:33 AM EST	Winter Storm Watch	CAR	23 hr
Feb 14, 3:49 AM EST	Winter Storm Watch	GYX	24 hr
Feb 14, 3:50 PM EST	Winter Storm Warning	GYX	46 hr
Feb 15, 2:57 AM EST	Winter Weather Advisory	CAR	19 hr
Feb 23, 2:58 PM EST	Flood Watch	GYX	4 days
Feb 24, 5:01 AM EST	Freezing Rain Advisory	CAR	29 hr
Feb 24, 6:35 PM EST	Dense Fog Advisory	GYX	18 hr
Feb 25, 5:00 PM EST	Dense Fog Advisory	CAR	9 hr
Feb 25, 6:08 PM EST	Dense Fog Advisory	GYX	6 hr
Feb 26, 4:52 PM EST	Areal Flood Warning	GYX	6 hr
Mar 1, 1:27 PM EST	Dense Fog Advisory	GYX	7 hr
Mar 1, 11:12 PM EST	Dense Fog Advisory	GYX	7 hr
Mar 3, 3:05 AM EST	Wind Chill Advisory	CAR	54 hr
Mar 3, 3:34 AM EST	Wind Chill Advisory	GYX	302 days
Mar 7, 3:09 AM EST	Freezing Rain Advisory	CAR	27 hr
Mar 7, 3:44 AM EST	Freezing Rain Advisory	GYX	20 hr
Mar 8, 6:38 PM EST	Special Weather Statement	GYX	22 min
Mar 10, 2:48 AM EST	Wind Chill Advisory	CAR	53 hr
Mar 10, 3:02 AM EST	Wind Chill Advisory	GYX	53 hr
Mar 10, 2:42 PM EST	Wind Chill Warning	CAR	41 hr
Mar 10, 3:42 PM EST	Wind Chill Warning	GYX	41 hr
Mar 11, 4:01 PM EST	Winter Storm Watch	GYX	35 hr
Mar 12, 4:25 AM EDT	Winter Storm Watch	CAR	29 hr
Mar 13, 3:58 AM EDT	Winter Storm Warning	GYX	55 hr
Mar 13, 4:19 AM EDT	Winter Storm Warning	CAR	55 hr
Mar 14, 5:36 PM EDT	Mesoscale Discussion	SPC	6 hr
Mar 21, 3:33 PM EDT	Winter Weather Advisory	CAR	30 hr
Mar 22, 3:31 AM EDT	Wind Advisory	GYX	17 hr
Mar 22, 9:21 PM EDT	Wind Chill Advisory	CAR	12 hr
Mar 26, 4:08 AM EDT	Winter Weather Advisory	GYX	17 hr
Mar 26, 2:39 PM EDT	Winter Weather Advisory	CAR	31 hr
Mar 26, 9:14 PM EDT	Winter Weather Advisory	GYX	20 hr
Apr 3, 3:19 AM EDT	Winter Storm Watch	GYX	12 hr
Apr 3, 2:44 PM EDT	Winter Weather Advisory	CAR	37 hr
Apr 3, 3:34 PM EDT	Winter Storm Warning	GYX	36 hr
Apr 3, 3:34 PM EDT	Winter Weather Advisory	GYX	13 hr
Apr 11, 12:19 PM EDT	Flood Watch	GYX	32 hr
Apr 11, 2:58 PM EDT	River Flood Warning	GYX	65 hr
Apr 11, 3:06 PM EDT	Flood Watch	CAR	37 hr
Apr 16, 9:09 PM EDT	River Flood Warning	GYX	60 hr
Apr 30, 5:29 PM EDT	Flood Watch	CAR	51 hr
Apr 30, 6:45 PM EDT	Flood Watch	GYX	33 hr
May 1, 10:37 PM EDT	River Flood Warning	GYX	35 hr
May 5, 3:02 PM EDT	Flood Watch	GYX	12 hr
May 15, 9:28 PM EDT	River Flood Warning	GYX	56 hr
May 20, 3:27 AM EDT	Frost Advisory	GYX	28 hr
May 20, 3:27 AM EDT	Freeze Warning	GYX	28 hr
May 31, 12:29 PM EDT	Mesoscale Discussion	SPC	61 min
May 31, 4:44 PM EDT	Special Weather Statement	GYX	16 min
May 31, 5:18 PM EDT	Special Weather Statement	GYX	42 min
Jun 1, 12:06 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 3:18 PM EDT	Wind Advisory	CAR	27 hr
Jun 12, 3:29 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 12, 3:58 PM EDT	Severe Thunderstorm Warning	CAR	62 min
Jun 12, 4:09 PM EDT	Special Weather Statement	GYX	36 min
Jun 18, 3:03 AM EDT	Flash Flood Watch	CAR	63 hr
Jun 18, 3:19 AM EDT	Flash Flood Watch	GYX	41 hr
Jun 19, 10:45 AM EDT	Mesoscale Discussion	SPC	3 hr
Jun 19, 12:24 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 19, 1:33 PM EDT	Severe Thunderstorm Warning	GYX	57 min
Jun 19, 2:58 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 19, 3:32 PM EDT	Flash Flood Warning	GYX	3 hr
Jun 19, 5:02 PM EDT	Flash Flood Warning	GYX	3 hr
Jun 19, 5:29 PM EDT	Special Weather Statement	CAR	31 min
Jun 19, 5:45 PM EDT	Areal Flood Advisory	CAR	3 hr
Jun 30, 3:38 AM EDT	Flash Flood Watch	GYX	46 hr
Jul 1, 7:38 PM EDT	Flash Flood Warning	GYX	6 hr
Jul 7, 2:39 PM EDT	Special Weather Statement	GYX	36 min
Jul 7, 3:13 PM EDT	Special Weather Statement	GYX	47 min
Jul 7, 3:14 PM EDT	Areal Flood Advisory	GYX	61 min
Jul 7, 4:28 PM EDT	Special Weather Statement	GYX	47 min
Jul 7, 4:55 PM EDT	Areal Flood Advisory	GYX	3 hr
Jul 7, 5:15 PM EDT	Special Weather Statement	GYX	45 min
Jul 7, 5:43 PM EDT	Areal Flood Advisory	GYX	3 hr
Jul 7, 5:57 PM EDT	Special Weather Statement	GYX	63 min
Jul 7, 6:26 PM EDT	Areal Flood Advisory	CAR	3 hr
Jul 7, 6:42 PM EDT	Flash Flood Warning	GYX	3 hr
Jul 8, 8:57 AM EDT	Special Weather Statement	GYX	63 min
Jul 8, 11:48 AM EDT	Special Weather Statement	GYX	42 min
Jul 8, 12:08 PM EDT	Special Weather Statement	GYX	52 min
Jul 8, 12:51 PM EDT	Severe Thunderstorm Warning	GYX	54 min
Jul 8, 1:13 PM EDT	Flash Flood Warning	GYX	2 hr
Jul 16, 5:56 AM EDT	Dense Fog Advisory	GYX	3 hr
Jul 16, 6:33 PM EDT	Special Weather Statement	GYX	42 min
Jul 16, 7:07 PM EDT	Special Weather Statement	GYX	23 min
Jul 17, 1:09 PM EDT	Special Weather Statement	GYX	36 min
Jul 17, 1:52 PM EDT	Special Weather Statement	GYX	23 min
Jul 17, 2:16 PM EDT	Special Weather Statement	GYX	29 min
Jul 17, 2:41 PM EDT	Special Weather Statement	GYX	34 min
Jul 17, 4:05 PM EDT	Special Weather Statement	CAR	85 min
Jul 17, 5:42 PM EDT	Severe Thunderstorm Warning	GYX	63 min
Jul 17, 6:14 PM EDT	Areal Flood Advisory	GYX	3 hr
Jul 17, 6:27 PM EDT	Flash Flood Warning	GYX	4 hr
Jul 17, 6:58 PM EDT	Mesoscale Discussion	SPC	62 min
Jul 17, 7:54 PM EDT	Special Weather Statement	CAR	51 min
Jul 18, 2:32 PM EDT	Special Weather Statement	GYX	28 min
Jul 19, 3:04 AM EDT	Dense Fog Advisory	GYX	6 hr
Jul 20, 1:38 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 21, 12:00 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 21, 6:45 PM EDT	Special Weather Statement	GYX	45 min
Aug 2, 10:25 PM EDT	Areal Flood Advisory	GYX	3 hr
Aug 3, 1:42 PM EDT	Special Weather Statement	GYX	33 min
Aug 10, 4:17 PM EDT	Severe Thunderstorm Warning	GYX	43 min
Aug 10, 5:02 PM EDT	Special Weather Statement	GYX	43 min
Aug 10, 5:28 PM EDT	Special Weather Statement	CAR	47 min
Aug 12, 7:20 PM EDT	Special Weather Statement	GYX	40 min
Aug 12, 8:28 PM EDT	Severe Thunderstorm Warning	GYX	62 min
Aug 22, 8:09 PM EDT	Severe Thunderstorm Warning	GYX	26 min
Sep 1, 3:07 PM EDT	Frost Advisory	GYX	15 hr
Sep 5, 6:43 PM EDT	Severe Thunderstorm Warning	GYX	47 min
Sep 5, 8:41 PM EDT	Areal Flood Advisory	GYX	2 hr
Sep 6, 3:29 AM EDT	Flash Flood Watch	GYX	24 hr
Sep 15, 11:01 PM EDT	Dense Fog Advisory	GYX	10 hr
Sep 18, 6:37 AM EDT	Dense Fog Advisory	CAR	83 min
Sep 18, 8:15 AM EDT	Dense Fog Advisory	CAR	105 min
Sep 18, 5:31 PM EDT	Dense Fog Advisory	GYX	10 hr
Sep 25, 8:33 PM EDT	Dense Fog Advisory	GYX	12 hr
Sep 27, 4:05 AM EDT	Dense Fog Advisory	GYX	6 hr
Sep 27, 7:03 PM EDT	Special Weather Statement	GYX	42 min
Sep 27, 7:44 PM EDT	Special Weather Statement	GYX	46 min
Sep 28, 1:14 AM EDT	Severe Thunderstorm Warning	GYX	48 min
Sep 29, 3:19 AM EDT	Freeze Watch	CAR	12 hr
Sep 29, 3:16 PM EDT	Freeze Warning	CAR	17 hr
Sep 30, 3:19 AM EDT	Frost Advisory	GYX	29 hr
Oct 15, 4:14 AM EDT	Wind Advisory	CAR	26 hr
Oct 28, 3:55 AM EDT	Flash Flood Watch	GYX	63 hr
Oct 29, 3:26 AM EDT	High Wind Warning	CAR	34 hr
Oct 29, 3:59 AM EDT	Wind Advisory	GYX	38 hr
Oct 30, 11:58 AM EDT	Areal Flood Warning	GYX	6 hr
Oct 30, 1:14 PM EDT	Wind Advisory	CAR	9 hr
Oct 30, 2:00 PM EDT	River Flood Warning	GYX	8 hr
Oct 30, 10:41 PM EDT	River Flood Warning	GYX	25 hr
Nov 9, 3:37 AM EST	Winter Weather Advisory	CAR	30 hr
Nov 9, 4:06 AM EST	Wind Advisory	CAR	40 hr
Nov 9, 3:25 PM EST	Wind Advisory	GYX	29 hr
Nov 10, 2:47 AM EST	Special Weather Statement	GYX	118 min
Nov 18, 2:49 PM EST	Winter Weather Advisory	GYX	13 hr
Nov 18, 4:14 PM EST	Winter Weather Advisory	CAR	16 hr
Nov 28, 4:07 PM EST	Winter Weather Advisory	CAR	16 hr
Dec 8, 3:02 PM EST	Winter Storm Watch	GYX	12 hr
Dec 9, 3:22 AM EST	Winter Weather Advisory	GYX	24 hr
Dec 10, 3:16 PM EST	Winter Storm Watch	GYX	24 hr
Dec 10, 4:05 PM EST	Winter Storm Watch	CAR	24 hr
Dec 11, 3:32 PM EST	Winter Storm Warning	GYX	44 hr
Dec 11, 4:00 PM EST	Winter Storm Warning	CAR	45 hr
Dec 14, 2:12 PM EST	Wind Chill Advisory	CAR	19 hr
Dec 21, 3:45 PM EST	Winter Weather Advisory	GYX	53 hr
Dec 21, 4:07 PM EST	Winter Weather Advisory	CAR	54 hr
Dec 23, 9:50 AM EST	Mesoscale Discussion	SPC	4 hr
Dec 23, 1:49 PM EST	Mesoscale Discussion	SPC	5 hr
Dec 23, 2:59 PM EST	Winter Storm Watch	GYX	12 hr
Dec 23, 3:16 PM EST	Winter Storm Watch	CAR	12 hr
Dec 24, 2:51 AM EST	Winter Storm Warning	GYX	36 hr
Dec 24, 3:45 AM EST	Winter Storm Warning	CAR	39 hr
Dec 25, 10:07 AM EST	Blizzard Warning	GYX	4 hr
Dec 26, 2:32 AM EST	Wind Chill Advisory	GYX	40 hr
Dec 26, 3:42 AM EST	Wind Chill Advisory	CAR	3 days
Dec 27, 3:41 AM EST	Wind Chill Advisory	CAR	54 hr
Dec 27, 3:55 AM EST	Wind Chill Advisory	GYX	57 hr
Dec 27, 2:12 PM EST	Wind Chill Warning	CAR	20 hr
Dec 27, 2:56 PM EST	Wind Chill Warning	GYX	40 hr
Dec 28, 2:54 PM EST	Wind Chill Warning	CAR	19 hr
Dec 30, 3:16 AM EST	Wind Chill Advisory	CAR	3 days
Dec 30, 3:22 AM EST	Wind Chill Advisory	GYX	24 hr
Dec 30, 3:31 PM EST	Wind Chill Warning	GYX	63 hr
Dec 30, 4:06 PM EST	Wind Chill Warning	CAR	20 hr
Dec 31, 2:57 PM EST	Wind Chill Warning	CAR	40 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	9
Severe Thunderstorm Watch	1
Mesoscale Discussion	15
Special Weather Statement	30
Flooding
Areal Flood Warning	2
Flash Flood Warning	6
River Flood Warning	6
Flash Flood Watch	5
Flood Watch	6
Areal Flood Advisory	8
Winter
Blizzard Warning	1
Winter Storm Warning	15
Winter Storm Watch	15
Freezing Rain Advisory	4
Winter Weather Advisory	24
Cold
Freeze Warning	2
Wind Chill Warning	9
Freeze Watch	1
Frost Advisory	3
Wind Chill Advisory	17
Wind and dust
High Wind Warning	1
Wind Advisory	7
Fog and smoke
Dense Fog Advisory	13

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2016 2018

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.