Alert archive / Maryland / Somerset County

Weather alerts in Somerset County, Maryland, 2011

149 weather alerts in 2011, 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 2011. Tap one for its archive.

Alerts: 149
Warnings: 16
Watches: 26
Advisories: 31
Busiest month: August29 alerts
Busiest day: August 27, 20118 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, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	6	4	33%	5	40%	14 min
Flash flood warnings	1	1	0%	0

Each office's whole area, 2011

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Wakefield, VA: tornado warnings	84	23	73%	43	77%	14 min
NWS Wakefield, VA: severe thunderstorm warnings	241	150	38%	386	79%	19 min
NWS Wakefield, VA: flash flood warnings	11	8	27%	35	86%	70 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 7, 10:07 PM EST	Winter Weather Advisory	AKQ	20 hr
Jan 10, 5:42 AM EST	Winter Storm Watch	AKQ	22 hr
Jan 10, 5:42 AM EST	Winter Weather Advisory	AKQ	37 hr
Jan 11, 7:03 PM EST	Winter Weather Advisory	AKQ	6 hr
Jan 26, 3:59 AM EST	Winter Weather Advisory	AKQ	21 hr
Feb 18, 3:44 AM EST	Fire Weather Watch	AKQ	11 hr
Feb 18, 2:57 PM EST	Red Flag Warning	AKQ	30 hr
Feb 18, 3:34 PM EST	Wind Advisory	AKQ	27 hr
Feb 24, 3:40 PM EST	Wind Advisory	AKQ	32 hr
Feb 25, 9:23 AM EST	Special Weather Statement	AKQ	52 min
Feb 25, 9:24 AM EST	Special Weather Statement	AKQ	51 min
Feb 25, 11:36 AM EST	Mesoscale Discussion	SPC	84 min
Feb 28, 12:49 PM EST	Mesoscale Discussion	SPC	56 min
Mar 8, 2:34 PM EST	Flood Watch	AKQ	59 hr
Mar 9, 4:29 AM EST	Coastal Flood Watch	AKQ	24 hr
Mar 10, 4:03 AM EST	Coastal Flood Advisory	AKQ	29 hr
Mar 10, 7:56 PM EST	Special Weather Statement	AKQ	79 min
Mar 16, 3:06 AM EDT	Special Weather Statement	AKQ	54 min
Mar 16, 3:07 AM EDT	Special Weather Statement	AKQ	53 min
Mar 21, 8:03 PM EDT	Special Weather Statement	AKQ	57 min
Mar 23, 8:17 PM EDT	Special Weather Statement	AKQ	58 min
Mar 26, 2:53 PM EDT	Winter Weather Advisory	AKQ	21 hr
Apr 5, 2:13 AM EDT	Mesoscale Discussion	SPC	32 min
Apr 5, 2:18 AM EDT	Tornado Watch	SPC	8 hr
Apr 5, 3:34 AM EDT	Mesoscale Discussion	SPC	116 min
Apr 5, 5:43 AM EDT	Severe Thunderstorm Warning	AKQ	62 min
Apr 5, 10:40 AM EDT	Special Weather Statement	AKQ	65 min
Apr 12, 1:56 PM EDT	Mesoscale Discussion	SPC	64 min
Apr 12, 3:13 PM EDT	Special Weather Statement	AKQ	62 min
Apr 15, 10:55 PM EDT	Coastal Flood Watch	AKQ	16 hr
Apr 16, 7:05 AM EDT	Coastal Flood Advisory	AKQ	23 hr
Apr 16, 12:52 PM EDT	Mesoscale Discussion	SPC	113 min
Apr 16, 3:01 PM EDT	Coastal Flood Warning	AKQ	18 hr
Apr 16, 7:49 PM EDT	Severe Thunderstorm Warning	AKQ	26 min
Apr 16, 10:42 PM EDT	Special Weather Statement	AKQ	63 min
Apr 27, 3:55 PM EDT	Mesoscale Discussion	SPC	65 min
Apr 27, 4:39 PM EDT	Mesoscale Discussion	SPC	66 min
Apr 27, 4:43 PM EDT	Special Weather Statement	AKQ	62 min
Apr 28, 7:38 AM EDT	Tornado Watch	SPC	7 hr
Apr 28, 2:00 PM EDT	Mesoscale Discussion	SPC	60 min
Apr 28, 2:41 PM EDT	Tornado Watch	SPC	6 hr
Apr 28, 6:33 PM EDT	Mesoscale Discussion	SPC	57 min
Apr 28, 8:27 PM EDT	Mesoscale Discussion	SPC	33 min
Apr 28, 9:05 PM EDT	Special Weather Statement	AKQ	55 min
May 6, 8:03 PM EDT	Special Weather Statement	AKQ	57 min
May 11, 3:29 PM EDT	Coastal Flood Statement	AKQ	23 hr
May 12, 4:22 PM EDT	Coastal Flood Statement	AKQ	27 hr
May 13, 6:59 PM EDT	Coastal Flood Advisory	AKQ	6 days
May 15, 1:38 PM EDT	Mesoscale Discussion	SPC	2 hr
May 16, 12:37 AM EDT	Special Weather Statement	AKQ	53 min
May 17, 5:22 AM EDT	Special Weather Statement	AKQ	38 min
May 17, 6:02 AM EDT	Special Weather Statement	AKQ	43 min
May 18, 12:55 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 18, 3:08 PM EDT	Mesoscale Discussion	SPC	67 min
May 18, 6:01 PM EDT	Mesoscale Discussion	SPC	89 min
May 18, 11:09 PM EDT	Special Weather Statement	AKQ	66 min
May 24, 12:42 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 1, 2:24 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 1, 6:27 PM EDT	Mesoscale Discussion	SPC	93 min
Jun 1, 8:25 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 9, 1:45 PM EDT	Mesoscale Discussion	SPC	90 min
Jun 10, 3:36 PM EDT	Special Weather Statement	AKQ	54 min
Jun 17, 4:31 AM EDT	Coastal Flood Advisory	AKQ	5 hr
Jun 18, 7:28 PM EDT	Special Weather Statement	AKQ	47 min
Jun 19, 10:21 AM EDT	Special Weather Statement	AKQ	69 min
Jun 19, 11:28 AM EDT	Areal Flood Advisory	AKQ	92 min
Jun 19, 12:06 PM EDT	Flash Flood Warning	AKQ	84 min
Jun 20, 11:45 AM EDT	Special Weather Statement	AKQ	60 min
Jun 24, 1:05 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 24, 2:25 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 24, 4:13 PM EDT	Mesoscale Discussion	SPC	92 min
Jun 28, 6:10 PM EDT	Special Weather Statement	AKQ	50 min
Jun 28, 6:22 PM EDT	Severe Thunderstorm Warning	AKQ	38 min
Jul 3, 4:43 AM EDT	Special Weather Statement	AKQ	47 min
Jul 3, 8:41 PM EDT	Mesoscale Discussion	SPC	64 min
Jul 4, 2:34 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 8, 3:56 AM EDT	Flash Flood Watch	AKQ	20 hr
Jul 8, 6:01 PM EDT	Special Weather Statement	AKQ	74 min
Jul 8, 8:24 PM EDT	Special Weather Statement	AKQ	71 min
Jul 11, 3:35 PM EDT	Heat Advisory	AKQ	28 hr
Jul 13, 2:21 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 20, 3:23 AM EDT	Excessive Heat Watch	AKQ	24 hr
Jul 20, 2:32 PM EDT	Special Weather Statement	AKQ	58 min
Jul 20, 4:26 PM EDT	Excessive Heat Warning	AKQ	3 days
Jul 20, 4:26 PM EDT	Heat Advisory	AKQ	38 hr
Jul 23, 3:44 PM EDT	Heat Advisory	AKQ	28 hr
Jul 25, 6:04 PM EDT	Special Weather Statement	AKQ	26 min
Jul 28, 2:00 PM EDT	Heat Advisory	AKQ	30 hr
Aug 1, 11:01 PM EDT	Severe Thunderstorm Warning	AKQ	29 min
Aug 3, 1:03 PM EDT	Mesoscale Discussion	SPC	87 min
Aug 14, 10:46 AM EDT	Special Weather Statement	AKQ	59 min
Aug 14, 10:48 PM EDT	Special Weather Statement	AKQ	42 min
Aug 19, 3:13 PM EDT	Mesoscale Discussion	SPC	62 min
Aug 20, 7:00 PM EDT	Tropical Storm Warning	NHC	8 days
Aug 21, 11:00 AM EDT	Hurricane Warning	NHC	7 days
Aug 21, 2:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 21, 4:24 PM EDT	Special Weather Statement	AKQ	66 min
Aug 21, 4:43 PM EDT	Severe Thunderstorm Warning	AKQ	47 min
Aug 21, 5:24 PM EDT	Severe Thunderstorm Warning	AKQ	51 min
Aug 21, 6:42 PM EDT	Mesoscale Discussion	SPC	63 min
Aug 25, 5:00 AM EDT	Tropical Storm Watch	NHC	54 hr
Aug 25, 12:37 PM EDT	Hurricane Local Statement	AKQ	65 hr
Aug 25, 3:23 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 25, 5:48 PM EDT	Hurricane Warning	AKQ	66 hr
Aug 25, 5:48 PM EDT	Tropical Storm Watch	AKQ	12 hr
Aug 25, 6:24 PM EDT	Mesoscale Discussion	SPC	96 min
Aug 25, 8:01 PM EDT	Flash Flood Watch	AKQ	4 hr
Aug 25, 11:51 PM EDT	Flood Watch	AKQ	52 hr
Aug 26, 5:27 AM EDT	Tropical Storm Warning	AKQ	57 hr
Aug 27, 12:32 AM EDT	Tornado Watch	SPC	10 hr
Aug 27, 3:06 AM EDT	Mesoscale Discussion	SPC	114 min
Aug 27, 7:52 AM EDT	Mesoscale Discussion	SPC	113 min
Aug 27, 10:31 AM EDT	Mesoscale Discussion	SPC	29 min
Aug 27, 10:41 AM EDT	Tornado Watch	SPC	9 hr
Aug 27, 11:41 AM EDT	Areal Flood Warning	AKQ	16 hr
Aug 27, 1:01 PM EDT	Mesoscale Discussion	SPC	119 min
Aug 27, 4:44 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 6, 5:47 PM EDT	Special Weather Statement	AKQ	58 min
Sep 7, 4:03 PM EDT	Coastal Flood Advisory	AKQ	12 hr
Sep 8, 2:27 AM EDT	Areal Flood Advisory	AKQ	3 hr
Sep 11, 6:38 PM EDT	Mesoscale Discussion	SPC	97 min
Sep 11, 7:17 PM EDT	Special Weather Statement	AKQ	58 min
Sep 11, 8:17 PM EDT	Special Weather Statement	AKQ	58 min
Sep 19, 3:45 PM EDT	Coastal Flood Advisory	AKQ	9 hr
Sep 22, 2:57 PM EDT	Flash Flood Watch	AKQ	29 hr
Sep 28, 8:46 AM EDT	Special Weather Statement	AKQ	59 min
Sep 29, 3:41 AM EDT	Coastal Flood Advisory	AKQ	9 hr
Sep 29, 4:39 PM EDT	Coastal Flood Statement	AKQ	11 hr
Sep 30, 11:24 AM EDT	Coastal Flood Statement	AKQ	9 hr
Oct 13, 11:18 AM EDT	Coastal Flood Advisory	AKQ	9 hr
Oct 13, 11:52 PM EDT	Coastal Flood Advisory	AKQ	21 hr
Oct 19, 4:12 PM EDT	Coastal Flood Advisory	AKQ	8 hr
Oct 19, 6:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 19, 11:41 PM EDT	Special Weather Statement	AKQ	49 min
Oct 20, 3:03 AM EDT	Coastal Flood Advisory	AKQ	12 hr
Oct 20, 3:47 PM EDT	Coastal Flood Advisory	AKQ	8 hr
Oct 29, 4:09 AM EDT	Wind Advisory	AKQ	17 hr
Oct 29, 7:48 AM EDT	Coastal Flood Advisory	AKQ	13 hr
Oct 30, 3:34 PM EDT	Freeze Warning	AKQ	16 hr
Nov 9, 3:15 AM EST	Dense Fog Advisory	AKQ	7 hr
Nov 9, 10:29 PM EST	Dense Fog Advisory	AKQ	11 hr
Nov 23, 5:41 AM EST	Special Weather Statement	AKQ	49 min
Dec 5, 2:21 AM EST	Dense Fog Advisory	AKQ	7 hr
Dec 7, 2:18 PM EST	Wind Advisory	AKQ	11 hr
Dec 7, 5:56 PM EST	Severe Thunderstorm Watch	SPC	4 hr
Dec 7, 7:19 PM EST	Mesoscale Discussion	SPC	26 min
Dec 7, 8:45 PM EST	Mesoscale Discussion	SPC	60 min
Dec 27, 2:23 PM EST	Coastal Flood Statement	AKQ	9 hr
Dec 27, 3:02 PM EST	Special Weather Statement	AKQ	43 min

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	6
Severe Thunderstorm Watch	9
Tornado Watch	5
Mesoscale Discussion	33
Special Weather Statement	37
Flooding
Areal Flood Warning	1
Flash Flood Warning	1
Flash Flood Watch	3
Flood Watch	2
Areal Flood Advisory	2
Winter
Winter Storm Watch	1
Winter Weather Advisory	5
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	4
Cold
Freeze Warning	1
Wind and dust
Wind Advisory	4
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	3
Tropical
Hurricane Warning	2
Tropical Storm Warning	2
Tropical Storm Watch	2
Hurricane Local Statement	1
Coast and beach
Coastal Flood Warning	1
Coastal Flood Watch	2
Coastal Flood Advisory	13
Coastal Flood Statement	5

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.