Weather alerts in Shelby County, Ohio, 2013

158 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Shelby County and its neighbors

Each county as a circle sized by its count in 2013. Tap one for its archive.

Alerts: 158
Warnings: 43
Watches: 20
Advisories: 51
Busiest month: June31 alerts
Busiest day: July 10, 201313 alerts

Over time

By month

Warning verification

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

1 of 3 tornado warnings covering Shelby County in 2013 had a tornado report inside them.

Shelby County, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	1	67%	0
Severe thunderstorm warnings	26	22	15%	19	100%	22 min
Flash flood warnings	3	3	0%	3	100%	150 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Wilmington, OH: tornado warnings	18	4	78%	9	56%	6 min
NWS Wilmington, OH: severe thunderstorm warnings	186	142	24%	516	85%	23 min
NWS Wilmington, OH: flash flood warnings	42	29	31%	85	82%	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 12, 3:57 AM EST	Flood Watch	ILN	38 hr
Jan 13, 1:42 AM EST	Areal Flood Advisory	ILN	3 hr
Jan 13, 3:41 PM EST	Areal Flood Advisory	ILN	6 hr
Jan 21, 4:06 AM EST	Wind Chill Advisory	ILN	30 hr
Jan 24, 3:45 PM EST	Winter Weather Advisory	ILN	22 hr
Jan 27, 10:38 AM EST	Freezing Rain Advisory	ILN	17 hr
Jan 28, 10:23 PM EST	Dense Fog Advisory	ILN	6 hr
Jan 30, 1:45 AM EST	Mesoscale Discussion	SPC	60 min
Jan 30, 4:33 AM EST	Special Weather Statement	ILN	57 min
Jan 30, 4:59 AM EST	Severe Thunderstorm Warning	ILN	31 min
Feb 1, 4:04 AM EST	Wind Chill Advisory	ILN	8 hr
Feb 1, 3:07 PM EST	Winter Weather Advisory	ILN	29 hr
Feb 4, 3:44 AM EST	Winter Weather Advisory	ILN	15 hr
Feb 11, 4:26 AM EST	Wind Advisory	ILN	13 hr
Feb 16, 10:16 AM EST	Special Weather Statement	ILN	89 min
Feb 18, 11:02 PM EST	Wind Advisory	ILN	3 hr
Feb 21, 3:35 AM EST	Winter Weather Advisory	ILN	32 hr
Mar 4, 3:46 AM EST	Winter Storm Watch	ILN	13 hr
Mar 4, 4:26 PM EST	Winter Storm Warning	ILN	41 hr
Mar 5, 8:45 PM EST	Mesoscale Discussion	SPC	4 hr
Mar 18, 1:49 AM EDT	Winter Weather Advisory	ILN	6 hr
Mar 22, 3:23 PM EDT	Winter Storm Watch	ILN	37 hr
Mar 23, 4:10 PM EDT	Winter Storm Warning	ILN	46 hr
Mar 24, 7:13 PM EDT	Mesoscale Discussion	SPC	6 hr
Mar 25, 1:52 PM EDT	Winter Weather Advisory	ILN	6 hr
Apr 8, 7:20 PM EDT	Mesoscale Discussion	SPC	55 min
Apr 10, 8:50 AM EDT	Special Weather Statement	ILN	25 min
Apr 10, 1:36 PM EDT	Mesoscale Discussion	SPC	84 min
Apr 10, 1:53 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 10, 3:41 PM EDT	Severe Thunderstorm Warning	ILN	49 min
Apr 10, 3:59 PM EDT	Mesoscale Discussion	SPC	61 min
Apr 10, 5:53 PM EDT	Areal Flood Advisory	ILN	3 hr
Apr 10, 6:16 PM EDT	Areal Flood Advisory	ILN	2 hr
Apr 10, 6:25 PM EDT	Severe Thunderstorm Warning	ILN	50 min
Apr 10, 7:17 PM EDT	Flash Flood Warning	ILN	3 hr
Apr 10, 8:28 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 10, 10:24 PM EDT	Areal Flood Advisory	ILN	111 min
Apr 11, 3:54 AM EDT	Flood Watch	ILN	24 hr
Apr 12, 5:17 AM EDT	River Flood Warning	ILN	7 hr
Apr 18, 12:14 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 18, 3:47 PM EDT	Mesoscale Discussion	SPC	88 min
Apr 18, 6:33 PM EDT	Mesoscale Discussion	SPC	117 min
Apr 19, 3:20 PM EDT	Freeze Watch	ILN	13 hr
Apr 20, 3:50 AM EDT	Freeze Warning	ILN	29 hr
Apr 21, 3:38 PM EDT	Frost Advisory	ILN	17 hr
Apr 24, 3:20 PM EDT	Frost Advisory	ILN	18 hr
Apr 25, 2:34 PM EDT	Frost Advisory	ILN	18 hr
May 10, 2:11 PM EDT	Special Weather Statement	ILN	49 min
May 11, 7:40 PM EDT	Special Weather Statement	ILN	50 min
May 12, 3:52 AM EDT	Frost Advisory	ILN	29 hr
May 17, 2:08 AM EDT	Dense Fog Advisory	ILN	8 hr
May 31, 1:26 PM EDT	Mesoscale Discussion	SPC	94 min
May 31, 11:11 PM EDT	Tornado Watch	SPC	5 hr
Jun 1, 2:13 AM EDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 9:18 PM EDT	Areal Flood Advisory	ILN	117 min
Jun 12, 4:38 PM EDT	Mesoscale Discussion	SPC	97 min
Jun 12, 5:00 PM EDT	Severe Thunderstorm Watch PDS	SPC	9 hr
Jun 12, 6:56 PM EDT	Mesoscale Discussion	SPC	94 min
Jun 12, 9:47 PM EDT	Mesoscale Discussion	SPC	88 min
Jun 12, 10:58 PM EDT	Special Weather Statement	ILN	47 min
Jun 12, 11:34 PM EDT	Special Weather Statement	ILN	86 min
Jun 12, 11:52 PM EDT	Severe Thunderstorm Warning	ILN	38 min
Jun 13, 12:25 AM EDT	Severe Thunderstorm Warning	ILN	50 min
Jun 13, 12:50 AM EDT	Mesoscale Discussion	SPC	85 min
Jun 13, 1:20 AM EDT	Areal Flood Advisory	ILN	3 hr
Jun 23, 6:43 PM EDT	Severe Thunderstorm Warning	ILN	47 min
Jun 23, 7:17 PM EDT	Severe Thunderstorm Warning	ILN	43 min
Jun 24, 9:11 PM EDT	Mesoscale Discussion	SPC	64 min
Jun 24, 9:56 PM EDT	Severe Thunderstorm Warning	ILN	64 min
Jun 24, 10:21 PM EDT	Severe Thunderstorm Watch	SPC	86 min
Jun 24, 10:58 PM EDT	Special Weather Statement	ILN	47 min
Jun 25, 3:04 PM EDT	Mesoscale Discussion	SPC	116 min
Jun 25, 3:37 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 25, 8:44 PM EDT	Mesoscale Discussion	SPC	61 min
Jun 26, 12:25 AM EDT	Severe Thunderstorm Warning	ILN	50 min
Jun 26, 11:29 AM EDT	Flash Flood Watch	ILN	16 hr
Jun 27, 7:12 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 27, 10:06 PM EDT	Severe Thunderstorm Warning	ILN	39 min
Jun 28, 1:36 PM EDT	Mesoscale Discussion	SPC	54 min
Jun 29, 3:49 PM EDT	Areal Flood Advisory	ILN	3 hr
Jun 30, 1:22 PM EDT	Areal Flood Advisory	ILN	3 hr
Jun 30, 1:59 PM EDT	Flash Flood Warning	ILN	3 hr
Jun 30, 5:00 PM EDT	Areal Flood Advisory	ILN	3 hr
Jul 3, 4:07 PM EDT	Flash Flood Watch	ILN	50 hr
Jul 6, 11:33 AM EDT	Areal Flood Advisory	ILN	3 hr
Jul 8, 5:21 AM EDT	Areal Flood Advisory	ILN	6 hr
Jul 8, 3:44 PM EDT	Flash Flood Watch	ILN	55 hr
Jul 8, 10:17 PM EDT	Severe Thunderstorm Warning	ILN	43 min
Jul 9, 2:33 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 9, 8:37 PM EDT	Areal Flood Advisory	ILN	4 hr
Jul 9, 8:39 PM EDT	Severe Thunderstorm Warning	ILN	51 min
Jul 9, 8:45 PM EDT	Special Weather Statement	ILN	30 min
Jul 9, 9:13 PM EDT	Special Weather Statement	ILN	17 min
Jul 9, 9:30 PM EDT	Special Weather Statement	ILN	45 min
Jul 9, 10:07 PM EDT	Areal Flood Advisory	ILN	3 hr
Jul 10, 8:57 AM EDT	Mesoscale Discussion	SPC	3 hr
Jul 10, 11:53 AM EDT	Mesoscale Discussion	SPC	67 min
Jul 10, 12:31 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 10, 2:32 PM EDT	Severe Thunderstorm Warning	ILN	43 min
Jul 10, 2:42 PM EDT	Areal Flood Advisory	ILN	3 hr
Jul 10, 2:46 PM EDT	Severe Thunderstorm Warning	ILN	44 min
Jul 10, 2:59 PM EDT	Severe Thunderstorm Warning	ILN	46 min
Jul 17, 3:59 AM EDT	Heat Advisory	ILN	62 hr
Jul 20, 11:00 AM EDT	Severe Thunderstorm Warning	ILN	45 min
Jul 20, 11:35 AM EDT	Severe Thunderstorm Warning	ILN	55 min
Jul 20, 12:00 PM EDT	Areal Flood Advisory	ILN	2 hr
Jul 23, 1:22 AM EDT	Dense Fog Advisory	ILN	8 hr
Jul 23, 12:44 PM EDT	Mesoscale Discussion	SPC	91 min
Aug 8, 3:25 PM EDT	Flash Flood Watch	ILN	24 hr
Aug 8, 3:45 PM EDT	Mesoscale Discussion	SPC	90 min
Aug 19, 5:44 AM EDT	Dense Fog Advisory	ILN	3 hr
Aug 21, 2:48 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 29, 5:26 AM EDT	Dense Fog Advisory	ILN	5 hr
Sep 10, 10:36 AM EDT	Heat Advisory	ILN	8 hr
Sep 12, 6:42 AM EDT	Special Weather Statement	ILN	33 min
Sep 20, 3:47 PM EDT	Mesoscale Discussion	SPC	88 min
Sep 20, 4:49 PM EDT	Special Weather Statement	ILN	41 min
Sep 20, 7:21 PM EDT	Areal Flood Advisory	ILN	4 hr
Oct 5, 3:22 PM EDT	Flash Flood Watch	ILN	28 hr
Oct 6, 10:52 AM EDT	Areal Flood Advisory	ILN	4 hr
Oct 21, 3:30 PM EDT	Frost Advisory	ILN	17 hr
Oct 22, 3:25 PM EDT	Freeze Watch	ILN	24 hr
Oct 23, 2:59 PM EDT	Freeze Warning	ILN	19 hr
Oct 24, 4:09 AM EDT	Freeze Warning	ILN	30 hr
Oct 29, 5:32 AM EDT	Dense Fog Advisory	ILN	4 hr
Oct 31, 9:38 AM EDT	Wind Advisory	ILN	17 hr
Oct 31, 9:53 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 31, 10:09 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Oct 31, 10:43 PM EDT	Severe Thunderstorm Warning	ILN	47 min
Oct 31, 10:48 PM EDT	Severe Thunderstorm Warning	ILN	57 min
Oct 31, 11:13 PM EDT	Tornado Warning	ILN	32 min
Oct 31, 11:20 PM EDT	Severe Thunderstorm Warning	ILN	55 min
Oct 31, 11:38 PM EDT	Tornado Warning	ILN	37 min
Nov 16, 3:33 PM EST	Wind Advisory	ILN	32 hr
Nov 17, 11:20 AM EST	Tornado Watch PDS	SPC	9 hr
Nov 17, 3:51 PM EST	Mesoscale Discussion	SPC	84 min
Nov 17, 4:18 PM EST	Severe Thunderstorm Warning	ILN	57 min
Nov 17, 5:12 PM EST	Severe Thunderstorm Warning	ILN	63 min
Nov 17, 5:24 PM EST	Tornado Warning	ILN	21 min
Nov 17, 5:51 PM EST	Severe Thunderstorm Warning	ILN	54 min
Nov 17, 6:06 PM EST	Mesoscale Discussion	SPC	54 min
Dec 5, 4:01 AM EST	Winter Storm Warning	ILN	45 hr
Dec 5, 4:01 AM EST	Winter Weather Advisory	ILN	45 hr
Dec 7, 4:00 AM EST	Winter Weather Advisory	ILN	48 hr
Dec 12, 4:03 PM EST	Winter Weather Advisory	ILN	50 hr
Dec 19, 3:49 PM EST	Flood Watch	ILN	63 hr
Dec 21, 5:39 AM EST	Areal Flood Advisory	ILN	4 hr
Dec 21, 9:29 AM EST	Areal Flood Advisory	ILN	6 hr
Dec 21, 9:40 AM EST	River Flood Warning	ILN	3 days
Dec 21, 3:43 PM EST	Areal Flood Advisory	ILN	3 hr
Dec 21, 6:09 PM EST	Areal Flood Advisory	ILN	3 hr
Dec 21, 7:32 PM EST	Flash Flood Warning	ILN	6 hr
Dec 21, 9:34 PM EST	Severe Thunderstorm Warning	ILN	41 min
Dec 21, 9:58 PM EST	Severe Thunderstorm Warning	ILN	32 min
Dec 21, 10:10 PM EST	Severe Thunderstorm Warning	ILN	50 min
Dec 22, 1:30 AM EST	Areal Flood Warning	ILN	11 hr
Dec 22, 11:39 AM EST	Areal Flood Warning	ILN	34 hr
Dec 23, 9:29 PM EST	Areal Flood Warning	ILN	63 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	26
Tornado Warning	3
Severe Thunderstorm Watch	6
Tornado Watch	2
Mesoscale Discussion	31
Special Weather Statement	13
Flooding
Areal Flood Warning	3
Flash Flood Warning	3
River Flood Warning	2
Flash Flood Watch	5
Flood Watch	3
Areal Flood Advisory	22
Winter
Winter Storm Warning	3
Winter Storm Watch	2
Freezing Rain Advisory	1
Winter Weather Advisory	9
Heat
Heat Advisory	2
Cold
Freeze Warning	3
Freeze Watch	2
Frost Advisory	5
Wind Chill Advisory	2
Wind and dust
Wind Advisory	4
Fog and smoke
Dense Fog Advisory	6

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2012 2014

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.