Alert archive / West Virginia / Mercer County

Weather alerts in Mercer County, West Virginia, 2015

148 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Mercer County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 148
Warnings: 27
Watches: 23
Advisories: 26
Busiest month: July37 alerts
Busiest day: July 13, 20157 alerts

Over time

By month

Warning verification

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

Mercer County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	8	6	25%	8	88%	23 min
Flash flood warnings	4	2	50%	3	33%	113 min

Each office's whole area, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Blacksburg, VA: tornado warnings	1	0	100%	0
NWS Blacksburg, VA: severe thunderstorm warnings	146	122	16%	435	76%	23 min
NWS Blacksburg, VA: flash flood warnings	30	18	40%	55	84%	80 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 6, 2:40 PM EST	Wind Chill Advisory	RNK	45 hr
Jan 7, 10:01 PM EST	Winter Weather Advisory	RNK	10 hr
Jan 9, 1:42 AM EST	Wind Advisory	RNK	10 hr
Jan 9, 3:39 AM EST	Wind Chill Advisory	RNK	30 hr
Jan 13, 3:13 AM EST	Winter Weather Advisory	RNK	33 hr
Jan 22, 3:22 PM EST	Winter Weather Advisory	RNK	43 hr
Feb 11, 4:03 AM EST	Freezing Fog Advisory	RNK	5 hr
Feb 12, 4:08 AM EST	Wind Chill Advisory	RNK	30 hr
Feb 13, 4:52 AM EST	Wind Chill Watch	RNK	24 hr
Feb 13, 2:42 PM EST	Winter Weather Advisory	RNK	38 hr
Feb 14, 4:28 AM EST	Wind Advisory	RNK	32 hr
Feb 14, 4:29 AM EST	Wind Chill Warning	RNK	48 hr
Feb 14, 4:29 AM EST	Wind Chill Advisory	RNK	48 hr
Feb 15, 5:01 AM EST	Winter Storm Watch	RNK	11 hr
Feb 15, 3:46 PM EST	Winter Storm Warning	RNK	37 hr
Feb 16, 9:51 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 16, 4:30 PM EST	Mesoscale Discussion	SPC	6 hr
Feb 17, 3:09 PM EST	Wind Chill Watch	RNK	13 hr
Feb 17, 3:09 PM EST	Winter Weather Advisory	RNK	36 hr
Feb 18, 4:10 AM EST	Wind Chill Warning	RNK	54 hr
Feb 18, 9:53 PM EST	Winter Storm Warning	RNK	9 hr
Feb 19, 3:24 PM EST	Winter Storm Watch	RNK	14 hr
Feb 20, 5:05 AM EST	Winter Storm Warning	RNK	49 hr
Feb 21, 4:20 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 21, 10:32 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 25, 3:01 AM EST	Winter Weather Advisory	RNK	30 hr
Feb 28, 3:16 PM EST	Winter Weather Advisory	RNK	24 hr
Mar 2, 3:36 PM EST	Winter Weather Advisory	RNK	21 hr
Mar 3, 2:05 AM EST	Winter Weather Advisory	RNK	8 hr
Mar 4, 4:13 AM EST	Winter Storm Warning	RNK	39 hr
Mar 4, 4:13 AM EST	Winter Weather Advisory	RNK	39 hr
Mar 4, 8:47 AM EST	Areal Flood Warning	RNK	39 hr
Mar 5, 11:55 AM EST	Mesoscale Discussion	SPC	6 hr
Mar 5, 11:41 PM EST	Areal Flood Warning	RNK	6 hr
Mar 6, 5:53 AM EST	Areal Flood Advisory	RNK	3 hr
Mar 9, 3:39 PM EDT	Flood Watch	RNK	47 hr
Mar 31, 3:45 AM EDT	Red Flag Warning	RNK	16 hr
Apr 3, 10:39 AM EDT	Flood Watch	RNK	15 hr
Apr 3, 6:10 PM EDT	Mesoscale Discussion	SPC	95 min
Apr 3, 7:46 PM EDT	Special Weather Statement	RNK	59 min
Apr 3, 10:45 PM EDT	Special Weather Statement	RNK	60 min
Apr 8, 1:51 PM EDT	Mesoscale Discussion	SPC	84 min
Apr 8, 4:35 PM EDT	Severe Thunderstorm Warning	RNK	44 min
Apr 8, 11:40 PM EDT	Special Weather Statement	RNK	65 min
Apr 10, 9:20 AM EDT	Special Weather Statement	RNK	55 min
Apr 10, 2:27 PM EDT	Special Weather Statement	RNK	63 min
Apr 13, 3:52 PM EDT	Flood Watch	RNK	28 hr
Apr 19, 10:39 PM EDT	Special Weather Statement	RNK	66 min
Apr 20, 12:19 AM EDT	Special Weather Statement	RNK	26 min
Apr 20, 3:00 AM EDT	Areal Flood Warning	RNK	18 hr
Apr 20, 5:54 PM EDT	River Flood Warning	RNK	22 hr
Apr 23, 3:56 AM EDT	Freeze Warning	RNK	28 hr
Apr 25, 8:30 PM EDT	Special Weather Statement	RNK	60 min
Apr 27, 3:31 PM EDT	Frost Advisory	RNK	17 hr
May 1, 1:04 AM EDT	Special Weather Statement	RNK	56 min
May 7, 4:47 PM EDT	Special Weather Statement	RNK	28 min
May 7, 6:24 PM EDT	Special Weather Statement	RNK	21 min
May 11, 8:27 PM EDT	Special Weather Statement	RNK	63 min
May 16, 6:53 PM EDT	Special Weather Statement	RNK	52 min
May 16, 7:13 PM EDT	Flash Flood Warning	RNK	6 hr
May 19, 1:15 AM EDT	Special Weather Statement	RNK	45 min
May 31, 6:01 PM EDT	Special Weather Statement	RNK	44 min
Jun 1, 5:08 PM EDT	Special Weather Statement	RNK	37 min
Jun 1, 5:59 PM EDT	Special Weather Statement	RNK	16 min
Jun 1, 6:19 PM EDT	Special Weather Statement	RNK	41 min
Jun 8, 1:10 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 8, 2:40 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 8, 3:59 PM EDT	Special Weather Statement	RNK	61 min
Jun 8, 4:24 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 8, 6:43 PM EDT	Special Weather Statement	RNK	32 min
Jun 16, 12:15 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 12:40 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 17, 3:14 PM EDT	Special Weather Statement	RNK	61 min
Jun 18, 2:28 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 19, 3:26 PM EDT	Flash Flood Watch	RNK	29 hr
Jun 20, 1:36 PM EDT	Mesoscale Discussion	SPC	114 min
Jun 21, 3:23 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 21, 3:51 PM EDT	Special Weather Statement	RNK	54 min
Jun 21, 4:12 PM EDT	Severe Thunderstorm Warning	RNK	63 min
Jun 21, 4:55 PM EDT	Severe Thunderstorm Warning	RNK	65 min
Jun 23, 4:09 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 5:47 PM EDT	Mesoscale Discussion	SPC	88 min
Jun 23, 6:47 PM EDT	Special Weather Statement	RNK	58 min
Jun 23, 7:41 PM EDT	Mesoscale Discussion	SPC	94 min
Jun 25, 8:28 PM EDT	Special Weather Statement	RNK	62 min
Jun 26, 5:10 AM EDT	Special Weather Statement	RNK	50 min
Jun 26, 11:51 PM EDT	Flash Flood Watch	RNK	18 hr
Jun 27, 12:39 AM EDT	Mesoscale Discussion	SPC	66 min
Jun 27, 3:24 PM EDT	Wind Advisory	RNK	23 hr
Jun 30, 12:55 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 30, 2:22 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 30, 3:48 PM EDT	Mesoscale Discussion	SPC	117 min
Jun 30, 7:08 PM EDT	Mesoscale Discussion	SPC	67 min
Jun 30, 8:28 PM EDT	Special Weather Statement	RNK	32 min
Jun 30, 9:06 PM EDT	Special Weather Statement	RNK	24 min
Jul 3, 2:33 PM EDT	Flash Flood Watch	RNK	5 hr
Jul 5, 4:35 AM EDT	Flash Flood Watch	RNK	25 hr
Jul 5, 6:20 PM EDT	Special Weather Statement	RNK	55 min
Jul 5, 7:01 PM EDT	Special Weather Statement	RNK	29 min
Jul 5, 7:31 PM EDT	Special Weather Statement	RNK	29 min
Jul 5, 7:37 PM EDT	Flash Flood Warning	RNK	6 hr
Jul 5, 8:07 PM EDT	Flash Flood Warning	RNK	6 hr
Jul 5, 9:02 PM EDT	Special Weather Statement	RNK	28 min
Jul 6, 1:35 AM EDT	Areal Flood Warning	RNK	3 hr
Jul 6, 3:22 AM EDT	Areal Flood Warning	RNK	6 hr
Jul 6, 9:36 AM EDT	Special Weather Statement	RNK	114 min
Jul 6, 7:50 PM EDT	Special Weather Statement	RNK	3 hr
Jul 6, 10:53 PM EDT	Special Weather Statement	RNK	3 hr
Jul 7, 5:21 PM EDT	Special Weather Statement	RNK	54 min
Jul 8, 3:47 PM EDT	Flash Flood Watch	RNK	5 hr
Jul 9, 5:49 PM EDT	Special Weather Statement	RNK	26 min
Jul 10, 4:46 PM EDT	Mesoscale Discussion	SPC	119 min
Jul 12, 11:30 PM EDT	Special Weather Statement	RNK	60 min
Jul 12, 11:57 PM EDT	Flash Flood Warning	RNK	3 hr
Jul 13, 3:36 PM EDT	Flash Flood Watch	RNK	16 hr
Jul 13, 4:07 PM EDT	Mesoscale Discussion	SPC	83 min
Jul 13, 4:39 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 13, 5:39 PM EDT	Severe Thunderstorm Warning	RNK	51 min
Jul 13, 5:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 2:42 AM EDT	Special Weather Statement	RNK	33 min
Jul 14, 3:21 AM EDT	Special Weather Statement	RNK	39 min
Jul 14, 4:00 AM EDT	Special Weather Statement	RNK	45 min
Jul 14, 6:10 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 6:38 PM EDT	Severe Thunderstorm Warning	RNK	67 min
Jul 14, 6:44 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Jul 14, 7:51 PM EDT	Severe Thunderstorm Warning	RNK	54 min
Jul 14, 8:01 PM EDT	Severe Thunderstorm Warning	RNK	43 min
Jul 19, 1:48 PM EDT	Special Weather Statement	RNK	42 min
Jul 29, 3:59 PM EDT	Special Weather Statement	RNK	31 min
Jul 29, 4:33 PM EDT	Special Weather Statement	RNK	27 min
Aug 10, 6:22 PM EDT	Special Weather Statement	RNK	53 min
Sep 9, 4:14 PM EDT	Special Weather Statement	RNK	31 min
Sep 9, 5:28 PM EDT	Special Weather Statement	RNK	62 min
Oct 1, 5:05 AM EDT	Flash Flood Watch	RNK	70 hr
Oct 9, 5:45 PM EDT	Severe Thunderstorm Warning	RNK	46 min
Oct 16, 3:59 AM EDT	Freeze Watch	RNK	24 hr
Oct 17, 3:31 AM EDT	Freeze Watch	RNK	35 hr
Oct 17, 3:31 AM EDT	Freeze Warning	RNK	29 hr
Oct 27, 4:28 AM EDT	Wind Advisory	RNK	30 hr
Oct 28, 5:34 PM EDT	Special Weather Statement	RNK	26 min
Nov 12, 3:42 AM EST	Wind Advisory	RNK	50 hr
Nov 17, 3:40 AM EST	Wind Advisory	RNK	43 hr
Dec 2, 5:37 AM EST	Special Weather Statement	RNK	113 min
Dec 2, 7:16 AM EST	Special Weather Statement	RNK	74 min
Dec 13, 3:38 AM EST	Wind Advisory	RNK	39 hr
Dec 24, 2:33 PM EST	Flash Flood Watch	RNK	31 hr
Dec 25, 2:52 PM EST	Areal Flood Advisory	RNK	6 hr
Dec 28, 3:36 AM EST	Wind Advisory	RNK	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	8
Severe Thunderstorm Watch	6
Mesoscale Discussion	23
Special Weather Statement	49
Flooding
Areal Flood Warning	5
Flash Flood Warning	4
River Flood Warning	1
Flash Flood Watch	8
Flood Watch	3
Areal Flood Advisory	2
Winter
Winter Storm Warning	4
Winter Storm Watch	2
Winter Weather Advisory	10
Cold
Freeze Warning	2
Wind Chill Warning	2
Freeze Watch	2
Wind Chill Watch	2
Frost Advisory	1
Wind Chill Advisory	4
Wind and dust
Wind Advisory	8
Fire
Red Flag Warning	1
Fog and smoke
Freezing Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.