Alert archive / Maine / Penobscot County

Weather alerts in Penobscot County, Maine, 2018

160 weather alerts in 2018, 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 2018. Tap one for its archive.

Alerts: 160
Warnings: 37
Watches: 16
Advisories: 73
Busiest month: August23 alerts
Busiest day: August 7, 20187 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 1 tornado warnings covering Penobscot County in 2018 had a tornado report inside them.

Penobscot County, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	16	9	44%	16	81%	18 min
Flash flood warnings	0			0

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Caribou, ME: tornado warnings	3	0	100%	0
NWS Caribou, ME: severe thunderstorm warnings	41	26	37%	66	65%	20 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, 3:23 PM EST	Winter Storm Watch	CAR	24 hr
Jan 3, 2:30 AM EST	Blizzard Warning	CAR	52 hr
Jan 4, 11:34 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 4, 8:19 PM EST	Special Weather Statement	CAR	56 min
Jan 4, 9:53 PM EST	Special Weather Statement	CAR	52 min
Jan 5, 3:36 AM EST	Winter Weather Advisory	CAR	12 hr
Jan 5, 3:21 PM EST	Wind Chill Warning	CAR	42 hr
Jan 5, 3:21 PM EST	Wind Chill Advisory	CAR	42 hr
Jan 7, 9:50 AM EST	Wind Chill Advisory	CAR	3 hr
Jan 9, 12:58 PM EST	Special Weather Statement	CAR	62 min
Jan 10, 3:30 AM EST	Winter Weather Advisory	CAR	29 hr
Jan 11, 2:38 PM EST	Winter Weather Advisory	CAR	49 hr
Jan 11, 4:16 PM EST	Flood Watch	CAR	47 hr
Jan 12, 10:22 AM EST	Dense Fog Advisory	CAR	2 hr
Jan 13, 12:56 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 13, 7:38 AM EST	Areal Flood Warning	CAR	3 hr
Jan 14, 8:49 AM EST	River Flood Warning	CAR	64 hr
Jan 16, 4:11 AM EST	Winter Weather Advisory	CAR	41 hr
Jan 21, 2:19 PM EST	Flood Watch	CAR	69 hr
Jan 22, 2:56 AM EST	Winter Weather Advisory	CAR	41 hr
Jan 23, 9:22 AM EST	Winter Weather Advisory	CAR	98 min
Feb 2, 3:39 AM EST	Wind Chill Advisory	CAR	32 hr
Feb 2, 3:39 AM EST	Winter Weather Advisory	CAR	8 hr
Feb 4, 3:28 AM EST	Winter Weather Advisory	CAR	30 hr
Feb 5, 3:52 PM EST	Winter Storm Watch	CAR	24 hr
Feb 6, 3:50 PM EST	Winter Storm Warning	CAR	33 hr
Feb 7, 6:21 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 10, 8:31 AM EST	Winter Weather Advisory	CAR	6 hr
Feb 10, 3:06 PM EST	Winter Weather Advisory	CAR	34 hr
Feb 10, 10:10 PM EST	Dense Fog Advisory	CAR	6 hr
Feb 11, 4:01 AM EST	Winter Weather Advisory	CAR	23 hr
Feb 16, 3:49 PM EST	Special Weather Statement	CAR	26 min
Feb 17, 2:53 PM EST	Winter Weather Advisory	CAR	19 hr
Feb 20, 3:52 PM EST	Dense Fog Advisory	CAR	17 hr
Feb 21, 9:35 AM EST	Dense Fog Advisory	CAR	2 hr
Mar 1, 3:19 PM EST	Winter Weather Advisory	CAR	20 hr
Mar 5, 3:40 PM EST	Winter Storm Watch	CAR	23 hr
Mar 6, 2:31 PM EST	Winter Storm Warning	CAR	64 hr
Mar 9, 3:20 PM EST	Special Weather Statement	CAR	55 min
Mar 9, 3:22 PM EST	Special Weather Statement	CAR	53 min
Mar 10, 4:30 PM EST	Special Weather Statement	CAR	105 min
Mar 11, 3:13 PM EDT	Winter Storm Watch	CAR	24 hr
Mar 12, 3:44 AM EDT	Winter Storm Warning	CAR	71 hr
Mar 13, 4:34 PM EDT	Special Weather Statement	CAR	116 min
Mar 13, 4:53 PM EDT	Mesoscale Discussion	SPC	4 hr
Mar 25, 8:29 AM EDT	Special Weather Statement	CAR	46 min
Mar 30, 4:03 AM EDT	Dense Fog Advisory	CAR	6 hr
Apr 3, 4:04 AM EDT	Winter Weather Advisory	CAR	42 hr
Apr 4, 3:41 PM EDT	Wind Advisory	CAR	24 hr
Apr 15, 3:45 PM EDT	Wind Advisory	CAR	37 hr
Apr 15, 3:52 PM EDT	Winter Weather Advisory	CAR	40 hr
Apr 25, 3:00 PM EDT	Flood Watch	CAR	3 days
Apr 26, 12:15 PM EDT	Areal Flood Warning	CAR	9 hr
Apr 26, 3:44 PM EDT	River Flood Warning	CAR	9 days
Apr 26, 9:02 PM EDT	Areal Flood Warning	CAR	9 hr
May 4, 1:35 PM EDT	Wind Advisory	CAR	24 hr
May 9, 5:50 AM EDT	Dense Fog Advisory	CAR	3 hr
May 11, 3:30 AM EDT	Frost Advisory	CAR	27 hr
May 18, 4:28 AM EDT	Frost Advisory	CAR	27 hr
May 21, 3:16 PM EDT	Frost Advisory	CAR	15 hr
May 23, 4:13 AM EDT	Frost Advisory	CAR	27 hr
Jun 29, 1:00 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 29, 4:21 PM EDT	Special Weather Statement	CAR	24 min
Jun 29, 4:31 PM EDT	Special Weather Statement	CAR	44 min
Jul 2, 5:21 AM EDT	Severe Thunderstorm Warning	CAR	54 min
Jul 2, 3:13 PM EDT	Heat Advisory	CAR	28 hr
Jul 4, 3:46 PM EDT	Heat Advisory	CAR	27 hr
Jul 10, 1:32 PM EDT	Severe Thunderstorm Warning	CAR	43 min
Jul 10, 2:12 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 10, 2:15 PM EDT	Severe Thunderstorm Warning	CAR	32 min
Jul 10, 3:38 PM EDT	Severe Thunderstorm Warning	CAR	37 min
Jul 10, 3:42 PM EDT	Severe Thunderstorm Warning	CAR	33 min
Jul 16, 3:38 AM EDT	Dense Fog Advisory	CAR	5 hr
Jul 27, 4:25 AM EDT	Dense Fog Advisory	CAR	6 hr
Jul 27, 2:06 PM EDT	Mesoscale Discussion	SPC	114 min
Jul 27, 4:59 PM EDT	Special Weather Statement	CAR	61 min
Jul 27, 6:05 PM EDT	Special Weather Statement	CAR	40 min
Jul 28, 4:14 PM EDT	Special Weather Statement	CAR	31 min
Jul 28, 4:35 PM EDT	Special Weather Statement	CAR	55 min
Jul 28, 9:31 PM EDT	Severe Thunderstorm Warning	CAR	44 min
Aug 5, 3:09 AM EDT	Dense Fog Advisory	CAR	5 hr
Aug 6, 3:37 AM EDT	Heat Advisory	CAR	14 hr
Aug 7, 3:26 AM EDT	Heat Advisory	CAR	15 hr
Aug 7, 1:03 PM EDT	Special Weather Statement	CAR	27 min
Aug 7, 1:03 PM EDT	Mesoscale Discussion	SPC	117 min
Aug 7, 1:21 PM EDT	Special Weather Statement	CAR	24 min
Aug 7, 1:24 PM EDT	Severe Thunderstorm Warning	CAR	36 min
Aug 7, 1:41 PM EDT	Special Weather Statement	CAR	34 min
Aug 7, 7:47 PM EDT	Severe Thunderstorm Warning	CAR	28 min
Aug 7, 8:16 PM EDT	Areal Flood Advisory	CAR	119 min
Aug 9, 5:30 AM EDT	Special Weather Statement	CAR	60 min
Aug 9, 12:30 PM EDT	Severe Thunderstorm Warning	CAR	45 min
Aug 9, 1:11 PM EDT	Severe Thunderstorm Warning	CAR	49 min
Aug 9, 2:06 PM EDT	Severe Thunderstorm Warning	CAR	39 min
Aug 15, 12:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 15, 3:20 PM EDT	Severe Thunderstorm Warning	CAR	40 min
Aug 29, 3:45 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 29, 4:57 PM EDT	Tornado Warning	CAR	63 min
Aug 29, 5:44 PM EDT	Severe Thunderstorm Warning	CAR	61 min
Aug 29, 5:49 PM EDT	Severe Thunderstorm Warning	CAR	41 min
Aug 29, 6:16 PM EDT	Mesoscale Discussion	SPC	89 min
Aug 29, 6:16 PM EDT	Mesoscale Discussion	SPC	89 min
Aug 29, 6:30 PM EDT	Severe Thunderstorm Warning	CAR	30 min
Sep 7, 4:37 PM EDT	Frost Advisory	CAR	38 hr
Sep 8, 4:16 AM EDT	Freeze Watch	CAR	35 hr
Sep 9, 3:30 PM EDT	Frost Advisory	CAR	15 hr
Sep 9, 3:30 PM EDT	Freeze Warning	CAR	15 hr
Sep 13, 3:53 AM EDT	Dense Fog Advisory	CAR	5 hr
Sep 14, 10:30 PM EDT	Dense Fog Advisory	CAR	10 hr
Sep 19, 3:12 PM EDT	High Wind Watch	CAR	12 hr
Sep 20, 3:23 AM EDT	Wind Advisory	CAR	57 hr
Sep 20, 11:59 PM EDT	Dense Fog Advisory	CAR	8 hr
Sep 21, 8:03 AM EDT	Dense Fog Advisory	CAR	57 min
Sep 22, 3:13 PM EDT	Frost Advisory	CAR	15 hr
Sep 23, 3:23 PM EDT	Frost Advisory	CAR	17 hr
Sep 23, 3:23 PM EDT	Freeze Warning	CAR	17 hr
Sep 24, 3:40 PM EDT	Frost Advisory	CAR	15 hr
Sep 26, 9:24 PM EDT	Special Weather Statement	CAR	51 min
Oct 5, 3:45 AM EDT	Freeze Warning	CAR	29 hr
Oct 13, 3:16 AM EDT	Frost Advisory	CAR	28 hr
Oct 15, 3:26 AM EDT	High Wind Watch	CAR	12 hr
Oct 15, 3:02 PM EDT	High Wind Warning	CAR	23 hr
Oct 15, 3:02 PM EDT	Wind Advisory	CAR	23 hr
Oct 17, 3:30 AM EDT	Wind Advisory	CAR	39 hr
Oct 23, 5:13 AM EDT	Winter Weather Advisory	CAR	41 hr
Oct 23, 3:56 PM EDT	Winter Storm Warning	CAR	30 hr
Oct 26, 3:10 PM EDT	Winter Weather Advisory	CAR	44 hr
Nov 2, 3:00 PM EDT	High Wind Watch	CAR	13 hr
Nov 3, 4:19 AM EDT	Wind Advisory	CAR	24 hr
Nov 3, 5:03 PM EDT	High Wind Warning	CAR	11 hr
Nov 3, 6:20 PM EDT	Severe Thunderstorm Warning	CAR	40 min
Nov 9, 3:34 AM EST	Winter Weather Advisory	CAR	30 hr
Nov 10, 3:13 AM EST	High Wind Watch	CAR	11 hr
Nov 10, 1:52 PM EST	Wind Advisory	CAR	22 hr
Nov 12, 3:09 AM EST	Winter Weather Advisory	CAR	43 hr
Nov 12, 3:09 PM EST	Winter Storm Warning	CAR	31 hr
Nov 14, 1:32 AM EST	Wind Advisory	CAR	14 hr
Nov 14, 3:16 PM EST	Winter Storm Watch	CAR	24 hr
Nov 15, 2:47 PM EST	Winter Storm Warning	CAR	13 hr
Nov 15, 2:47 PM EST	Winter Weather Advisory	CAR	34 hr
Nov 16, 3:33 AM EST	Winter Storm Warning	CAR	21 hr
Nov 16, 3:56 AM EST	Mesoscale Discussion	SPC	6 hr
Nov 19, 2:48 PM EST	Winter Weather Advisory	CAR	31 hr
Nov 21, 4:21 PM EST	Special Weather Statement	CAR	54 min
Nov 24, 2:52 PM EST	Winter Weather Advisory	CAR	28 hr
Nov 25, 3:49 PM EST	Winter Storm Watch	CAR	24 hr
Nov 26, 3:16 AM EST	Winter Storm Warning	CAR	45 hr
Nov 26, 3:36 PM EST	Winter Weather Advisory	CAR	24 hr
Dec 1, 3:35 AM EST	Winter Weather Advisory	CAR	45 hr
Dec 2, 7:37 PM EST	Dense Fog Advisory	CAR	17 hr
Dec 16, 2:58 PM EST	Winter Weather Advisory	CAR	36 hr
Dec 17, 2:03 AM EST	Mesoscale Discussion	SPC	6 hr
Dec 18, 3:04 AM EST	Winter Weather Advisory	CAR	12 hr
Dec 20, 3:08 AM EST	Winter Weather Advisory	CAR	32 hr
Dec 20, 3:09 AM EST	Flood Watch	CAR	60 hr
Dec 20, 3:08 PM EST	Wind Advisory	CAR	36 hr
Dec 22, 5:26 AM EST	Dense Fog Advisory	CAR	4 hr
Dec 27, 3:23 AM EST	Winter Weather Advisory	CAR	43 hr
Dec 28, 5:29 AM EST	Winter Weather Advisory	CAR	10 hr
Dec 28, 3:41 PM EST	Dense Fog Advisory	CAR	17 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	16
Tornado Warning	1
Severe Thunderstorm Watch	1
Mesoscale Discussion	13
Special Weather Statement	21
Flooding
Areal Flood Warning	3
River Flood Warning	2
Flood Watch	4
Areal Flood Advisory	1
Winter
Blizzard Warning	1
Winter Storm Warning	8
Winter Storm Watch	6
Winter Weather Advisory	29
Heat
Heat Advisory	4
Cold
Freeze Warning	3
Wind Chill Warning	1
Freeze Watch	1
Frost Advisory	10
Wind Chill Advisory	3
Wind and dust
High Wind Warning	2
High Wind Watch	4
Wind Advisory	10
Fog and smoke
Dense Fog Advisory	16

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2017 2019

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.