Alert archive / Maryland / Somerset County

Weather alerts in Somerset County, Maryland, 2018

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

Alerts: 159
Warnings: 23
Watches: 14
Advisories: 53
Busiest month: June25 alerts
Busiest day: August 31, 20186 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, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	4	2	50%	2	50%	12 min
Flash flood warnings	2	1	50%	2	100%	63 min

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Wakefield, VA: tornado warnings	47	15	68%	28	86%	17 min
NWS Wakefield, VA: severe thunderstorm warnings	122	85	30%	212	77%	22 min
NWS Wakefield, VA: flash flood warnings	37	25	32%	65	88%	97 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, 3:12 AM EST	Winter Storm Watch	AKQ	24 hr
Jan 2, 9:44 PM EST	Winter Storm Warning	AKQ	44 hr
Jan 3, 9:00 AM EST	Blizzard Warning	AKQ	33 hr
Jan 3, 9:04 PM EST	Mesoscale Discussion	SPC	6 hr
Jan 4, 2:30 PM EST	Wind Chill Advisory	AKQ	20 hr
Jan 5, 4:20 AM EST	Wind Chill Advisory	AKQ	33 hr
Jan 6, 2:35 PM EST	Wind Chill Advisory	AKQ	18 hr
Jan 8, 5:26 PM EST	Winter Weather Advisory	AKQ	3 hr
Feb 4, 6:00 PM EST	Special Weather Statement	AKQ	45 min
Feb 11, 3:52 PM EST	Mesoscale Discussion	SPC	2 hr
Feb 11, 4:36 PM EST	Special Weather Statement	AKQ	39 min
Feb 25, 5:44 AM EST	Dense Fog Advisory	AKQ	4 hr
Feb 28, 2:45 PM EST	High Wind Watch	AKQ	21 hr
Mar 1, 11:28 AM EST	High Wind Warning	AKQ	40 hr
Mar 3, 3:43 AM EST	Wind Advisory	AKQ	7 hr
Mar 6, 8:13 AM EST	Coastal Flood Advisory	AKQ	33 hr
Mar 6, 2:42 PM EST	Coastal Flood Warning	AKQ	5 hr
Mar 7, 12:27 AM EST	Coastal Flood Warning	AKQ	17 hr
Mar 7, 5:27 PM EST	Coastal Flood Advisory	AKQ	2 hr
Mar 19, 3:29 PM EDT	Winter Storm Watch	AKQ	24 hr
Mar 20, 3:38 PM EDT	Winter Storm Warning	AKQ	32 hr
Mar 21, 4:12 PM EDT	Coastal Flood Statement	AKQ	16 hr
Apr 4, 1:27 PM EDT	Mesoscale Discussion	SPC	3 hr
Apr 16, 4:45 AM EDT	Coastal Flood Advisory	AKQ	25 hr
Apr 29, 4:06 PM EDT	Fire Weather Watch	AKQ	13 hr
Apr 30, 5:01 AM EDT	Red Flag Warning	AKQ	15 hr
May 12, 10:22 PM EDT	Special Weather Statement	AKQ	53 min
May 12, 11:29 PM EDT	Special Weather Statement	AKQ	46 min
May 13, 12:20 AM EDT	Special Weather Statement	AKQ	40 min
May 13, 12:46 AM EDT	Severe Thunderstorm Warning	AKQ	29 min
May 14, 5:37 PM EDT	Mesoscale Discussion	SPC	53 min
May 14, 6:11 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
May 14, 8:11 PM EDT	Severe Thunderstorm Warning	AKQ	34 min
May 17, 2:32 PM EDT	Flood Watch	AKQ	51 hr
May 18, 7:27 AM EDT	Areal Flood Advisory	AKQ	4 hr
May 18, 8:34 AM EDT	Areal Flood Advisory	AKQ	116 min
May 18, 11:29 AM EDT	Areal Flood Warning	AKQ	6 hr
May 18, 5:23 PM EDT	Areal Flood Warning	AKQ	12 hr
May 19, 5:03 AM EDT	Areal Flood Warning	AKQ	6 hr
May 19, 10:59 AM EDT	Areal Flood Warning	AKQ	6 hr
May 19, 6:56 PM EDT	Coastal Flood Advisory	AKQ	15 hr
May 27, 2:48 PM EDT	Flash Flood Watch	AKQ	12 hr
May 27, 8:58 PM EDT	Special Weather Statement	AKQ	77 min
May 27, 10:19 PM EDT	Areal Flood Advisory	AKQ	3 hr
May 30, 1:55 AM EDT	Dense Fog Advisory	AKQ	7 hr
Jun 2, 3:20 AM EDT	Flash Flood Watch	AKQ	39 hr
Jun 2, 2:27 PM EDT	Special Weather Statement	AKQ	48 min
Jun 2, 2:42 PM EDT	Flash Flood Warning	AKQ	4 hr
Jun 5, 5:34 AM EDT	Coastal Flood Advisory	AKQ	5 hr
Jun 9, 1:34 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 9, 4:13 PM EDT	Special Weather Statement	AKQ	32 min
Jun 9, 4:52 PM EDT	Special Weather Statement	AKQ	38 min
Jun 9, 5:21 PM EDT	Special Weather Statement	AKQ	39 min
Jun 10, 4:12 AM EDT	Flash Flood Watch	AKQ	22 hr
Jun 11, 12:27 PM EDT	Coastal Flood Advisory	AKQ	15 hr
Jun 12, 1:11 PM EDT	Coastal Flood Advisory	AKQ	16 hr
Jun 13, 4:49 AM EDT	Coastal Flood Advisory	AKQ	23 hr
Jun 17, 4:19 AM EDT	Coastal Flood Statement	AKQ	3 hr
Jun 18, 6:04 AM EDT	Dense Fog Advisory	AKQ	3 hr
Jun 19, 3:02 PM EDT	Special Weather Statement	AKQ	43 min
Jun 19, 3:40 PM EDT	Special Weather Statement	AKQ	65 min
Jun 22, 9:35 PM EDT	Coastal Flood Advisory	AKQ	5 hr
Jun 23, 1:38 PM EDT	Mesoscale Discussion	SPC	67 min
Jun 23, 1:59 PM EDT	Coastal Flood Advisory	AKQ	12 hr
Jun 23, 5:40 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 23, 8:03 PM EDT	Special Weather Statement	AKQ	42 min
Jun 24, 4:21 PM EDT	Special Weather Statement	AKQ	54 min
Jun 24, 5:49 PM EDT	Severe Thunderstorm Warning	AKQ	41 min
Jun 27, 4:42 PM EDT	Coastal Flood Advisory	AKQ	14 hr
Jun 27, 7:37 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 1, 2:45 PM EDT	Heat Advisory	AKQ	29 hr
Jul 12, 2:19 PM EDT	Special Weather Statement	AKQ	41 min
Jul 12, 11:14 PM EDT	Coastal Flood Statement	AKQ	5 hr
Jul 13, 9:22 PM EDT	Coastal Flood Statement	AKQ	9 hr
Jul 21, 3:02 PM EDT	Coastal Flood Advisory	AKQ	11 hr
Jul 22, 3:32 PM EDT	Coastal Flood Advisory	AKQ	13 hr
Jul 23, 2:57 AM EDT	Mesoscale Discussion	SPC	3 hr
Jul 23, 10:39 AM EDT	Coastal Flood Advisory	AKQ	17 hr
Jul 23, 2:40 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 24, 11:21 AM EDT	Coastal Flood Statement	AKQ	3 hr
Jul 24, 3:28 PM EDT	Coastal Flood Advisory	AKQ	12 hr
Jul 25, 9:46 PM EDT	Special Weather Statement	AKQ	44 min
Jul 25, 10:27 PM EDT	Special Weather Statement	AKQ	48 min
Jul 27, 1:52 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 27, 4:09 PM EDT	Special Weather Statement	AKQ	51 min
Jul 27, 4:15 PM EDT	Severe Thunderstorm Warning	AKQ	45 min
Jul 27, 7:06 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 30, 6:16 AM EDT	Special Weather Statement	AKQ	59 min
Jul 30, 9:55 AM EDT	Areal Flood Advisory	AKQ	3 hr
Aug 3, 10:01 AM EDT	Special Weather Statement	AKQ	44 min
Aug 3, 10:32 AM EDT	Areal Flood Advisory	AKQ	111 min
Aug 7, 8:50 PM EDT	Special Weather Statement	AKQ	25 min
Aug 12, 6:05 PM EDT	Areal Flood Advisory	AKQ	3 hr
Aug 12, 8:06 PM EDT	Areal Flood Advisory	AKQ	3 hr
Aug 13, 4:31 AM EDT	Special Weather Statement	AKQ	44 min
Aug 18, 8:53 PM EDT	Special Weather Statement	AKQ	67 min
Aug 20, 2:22 PM EDT	Special Weather Statement	AKQ	38 min
Aug 21, 12:22 PM EDT	Special Weather Statement	AKQ	53 min
Aug 21, 2:29 PM EDT	Special Weather Statement	AKQ	31 min
Aug 21, 3:01 PM EDT	Special Weather Statement	AKQ	44 min
Aug 28, 1:11 PM EDT	Heat Advisory	AKQ	6 hr
Aug 28, 3:16 PM EDT	Heat Advisory	AKQ	28 hr
Aug 31, 12:21 AM EDT	Special Weather Statement	AKQ	54 min
Aug 31, 5:03 PM EDT	Special Weather Statement	AKQ	42 min
Aug 31, 5:51 PM EDT	Special Weather Statement	AKQ	24 min
Aug 31, 6:15 PM EDT	Areal Flood Advisory	AKQ	2 hr
Aug 31, 6:16 PM EDT	Special Weather Statement	AKQ	44 min
Aug 31, 7:13 PM EDT	Special Weather Statement	AKQ	47 min
Sep 2, 7:28 AM EDT	Special Weather Statement	AKQ	47 min
Sep 3, 3:05 PM EDT	Special Weather Statement	AKQ	40 min
Sep 4, 4:25 PM EDT	Special Weather Statement	AKQ	50 min
Sep 7, 3:11 PM EDT	Areal Flood Advisory	AKQ	2 hr
Sep 8, 7:30 AM EDT	Special Weather Statement	AKQ	45 min
Sep 9, 12:19 PM EDT	Coastal Flood Warning	AKQ	56 hr
Sep 11, 5:29 PM EDT	Coastal Flood Advisory	AKQ	37 hr
Sep 12, 4:18 PM EDT	Coastal Flood Watch	AKQ	25 hr
Sep 13, 6:24 AM EDT	Coastal Flood Warning	AKQ	54 hr
Sep 15, 4:51 AM EDT	Coastal Flood Advisory	AKQ	24 hr
Sep 17, 10:07 AM EDT	Coastal Flood Statement	AKQ	26 hr
Sep 17, 6:46 PM EDT	Coastal Flood Advisory	AKQ	8 hr
Sep 20, 3:26 PM EDT	Coastal Flood Advisory	AKQ	13 hr
Sep 21, 4:14 AM EDT	Coastal Flood Statement	AKQ	12 hr
Sep 21, 4:47 PM EDT	Coastal Flood Advisory	AKQ	12 hr
Sep 24, 4:01 AM EDT	Coastal Flood Statement	AKQ	14 hr
Sep 24, 9:09 PM EDT	Coastal Flood Advisory	AKQ	47 hr
Sep 28, 1:26 PM EDT	Coastal Flood Statement	AKQ	8 hr
Oct 6, 3:15 PM EDT	Coastal Flood Advisory	AKQ	15 hr
Oct 7, 6:57 AM EDT	Coastal Flood Statement	AKQ	9 hr
Oct 10, 4:23 AM EDT	Flash Flood Watch	AKQ	47 hr
Oct 10, 5:45 AM EDT	Coastal Flood Statement	AKQ	24 hr
Oct 10, 3:26 PM EDT	High Wind Warning	AKQ	39 hr
Oct 10, 3:26 PM EDT	Wind Advisory	AKQ	34 hr
Oct 10, 4:32 PM EDT	Coastal Flood Advisory	AKQ	36 hr
Oct 11, 9:58 AM EDT	Tornado Watch	SPC	13 hr
Oct 11, 12:48 PM EDT	Mesoscale Discussion	SPC	117 min
Oct 11, 6:16 PM EDT	Mesoscale Discussion	SPC	89 min
Oct 11, 8:02 PM EDT	Mesoscale Discussion	SPC	58 min
Oct 11, 10:57 PM EDT	Flash Flood Warning	AKQ	6 hr
Oct 11, 11:39 PM EDT	Coastal Flood Warning	AKQ	5 hr
Oct 11, 11:39 PM EDT	Coastal Flood Advisory	AKQ	5 hr
Oct 12, 4:53 AM EDT	Areal Flood Warning	AKQ	6 hr
Oct 13, 5:52 AM EDT	Coastal Flood Statement	AKQ	9 hr
Oct 13, 5:52 AM EDT	Coastal Flood Advisory	AKQ	16 hr
Oct 18, 3:20 PM EDT	Frost Advisory	AKQ	17 hr
Oct 20, 2:52 PM EDT	Wind Advisory	AKQ	20 hr
Oct 26, 2:50 PM EDT	Coastal Flood Advisory	AKQ	30 hr
Oct 27, 1:42 AM EDT	Coastal Flood Statement	AKQ	6 hr
Oct 28, 2:01 PM EDT	Coastal Flood Statement	AKQ	4 hr
Nov 2, 6:55 PM EDT	Mesoscale Discussion	SPC	95 min
Nov 6, 8:25 AM EST	Coastal Flood Statement	AKQ	9 hr
Nov 6, 12:11 PM EST	Mesoscale Discussion	SPC	94 min
Nov 6, 1:35 PM EST	Special Weather Statement	AKQ	55 min
Nov 9, 3:23 PM EST	Freeze Warning	AKQ	42 hr
Nov 14, 3:32 AM EST	Flood Watch	AKQ	35 hr
Nov 24, 6:04 PM EST	Special Weather Statement	AKQ	41 min
Nov 26, 5:48 AM EST	Coastal Flood Advisory	AKQ	14 hr
Dec 8, 2:50 PM EST	Winter Weather Advisory	AKQ	37 hr
Dec 14, 5:39 AM EST	Dense Fog Advisory	AKQ	3 hr
Dec 21, 4:36 AM EST	Coastal Flood Advisory	AKQ	21 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	4
Severe Thunderstorm Watch	2
Tornado Watch	1
Mesoscale Discussion	16
Special Weather Statement	38
Flooding
Areal Flood Warning	5
Flash Flood Warning	2
Flash Flood Watch	4
Flood Watch	2
Areal Flood Advisory	9
Winter
Blizzard Warning	1
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	2
Heat
Heat Advisory	3
Cold
Freeze Warning	1
Frost Advisory	1
Wind Chill Advisory	3
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	3
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	4
Coast and beach
Coastal Flood Warning	5
Coastal Flood Watch	1
Coastal Flood Advisory	28
Coastal Flood Statement	15

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.