Weather alerts in Knox County, Indiana, 2010

222 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Knox County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts: 222
Warnings: 99
Watches: 40
Advisories: 50
Busiest month: June59 alerts
Busiest day: June 14, 201012 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 Knox County in 2010 had a tornado report inside them.

Knox County, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	15	12	20%	16	63%	23 min
Flash flood warnings	3	2	33%	3	100%	27 min

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Indianapolis, IN: tornado warnings	59	2	97%	8	50%	11 min
NWS Indianapolis, IN: severe thunderstorm warnings	197	91	54%	269	73%	27 min
NWS Indianapolis, IN: flash flood warnings	45	17	62%	35	60%	90 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 5, 2:36 PM EST	Winter Storm Watch	IND	25 hr
Jan 6, 3:28 PM EST	Winter Weather Advisory	IND	50 hr
Jan 19, 2:30 AM EST	Freezing Fog Advisory	IND	8 hr
Jan 19, 10:05 AM EST	Dense Fog Advisory	IND	3 hr
Jan 19, 3:35 PM EST	Dense Fog Advisory	IND	12 hr
Jan 22, 11:10 AM EST	River Flood Advisory	IND	33 hr
Jan 22, 11:10 AM EST	River Flood Advisory	IND	33 hr
Jan 22, 11:10 AM EST	River Flood Advisory	IND	36 hr
Jan 23, 12:03 PM EST	River Flood Warning	IND	6 days
Jan 23, 12:03 PM EST	River Flood Warning	IND	9 hr
Jan 23, 12:03 PM EST	River Flood Warning	IND	9 days
Jan 23, 12:03 PM EST	River Flood Warning	IND	9 days
Jan 23, 11:13 PM EST	River Flood Advisory	IND	5 days
Jan 25, 11:10 AM EST	River Flood Warning	IND	48 hr
Feb 3, 3:23 PM EST	Winter Storm Watch	IND	23 hr
Feb 4, 2:31 PM EST	Winter Weather Advisory	IND	49 hr
Feb 6, 3:49 PM EST	Winter Storm Watch	IND	45 hr
Feb 8, 12:46 PM EST	Winter Storm Warning	IND	50 hr
Feb 9, 4:40 AM EST	Winter Weather Advisory	IND	34 hr
Feb 14, 3:54 AM EST	Winter Storm Watch	IND	9 hr
Feb 14, 1:13 PM EST	Winter Storm Warning	IND	30 hr
Feb 14, 1:13 PM EST	Winter Weather Advisory	IND	50 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 21, 10:56 AM EST	River Flood Warning	IND	24 hr
Feb 22, 10:10 AM EST	Dense Fog Advisory	IND	3 hr
Mar 8, 3:44 AM EST	Dense Fog Advisory	IND	9 hr
Mar 11, 2:56 PM EST	Mesoscale Discussion	SPC	94 min
Mar 12, 2:30 PM EST	River Flood Warning	IND	7 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	6 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	8 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	7 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	44 hr
Mar 12, 2:30 PM EST	River Flood Warning	IND	12 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	13 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	7 days
Mar 12, 2:30 PM EST	River Flood Warning	IND	44 hr
Mar 23, 8:16 AM EDT	Dense Fog Advisory	IND	104 min
Mar 26, 8:30 AM EDT	River Flood Warning	IND	62 hr
Mar 26, 8:30 AM EDT	River Flood Warning	IND	11 days
Mar 26, 9:25 AM EDT	River Flood Warning	IND	3 days
Mar 26, 12:16 PM EDT	River Flood Warning	IND	7 days
Mar 26, 12:16 PM EDT	River Flood Warning	IND	9 days
Mar 26, 12:16 PM EDT	River Flood Warning	IND	9 days
Mar 26, 12:16 PM EDT	River Flood Warning	IND	10 days
Mar 26, 12:16 PM EDT	River Flood Warning	IND	71 hr
Mar 28, 2:57 PM EDT	River Flood Warning	IND	20 hr
Apr 1, 2:48 PM EDT	Fire Weather Watch	IND	13 hr
Apr 2, 3:53 AM EDT	Red Flag Warning	IND	16 hr
Apr 5, 5:29 PM EDT	Tornado Watch	SPC	4 hr
Apr 7, 2:24 PM EDT	Tornado Watch	SPC	8 hr
Apr 7, 4:15 PM EDT	Mesoscale Discussion	SPC	2 hr
Apr 7, 6:43 PM EDT	Mesoscale Discussion	SPC	62 min
Apr 8, 11:33 AM EDT	River Flood Warning	IND	49 hr
Apr 8, 11:33 AM EDT	River Flood Warning	IND	49 hr
Apr 8, 11:33 AM EDT	River Flood Warning	IND	3 days
Apr 8, 11:33 AM EDT	River Flood Warning	IND	68 hr
Apr 8, 11:33 AM EDT	River Flood Warning	IND	3 days
Apr 8, 11:33 AM EDT	River Flood Warning	IND	23 hr
Apr 8, 11:33 AM EDT	River Flood Warning	IND	23 hr
Apr 15, 8:53 AM EDT	Red Flag Warning	IND	11 hr
Apr 17, 4:12 AM EDT	Frost Advisory	IND	8 hr
Apr 17, 12:08 PM EDT	Freeze Warning	IND	21 hr
Apr 24, 8:33 PM EDT	Mesoscale Discussion	SPC	57 min
Apr 24, 9:26 PM EDT	Tornado Watch	SPC	2 hr
Apr 30, 3:32 PM EDT	Flash Flood Watch	IND	43 hr
May 1, 12:41 AM EDT	Mesoscale Discussion	SPC	64 min
May 1, 1:51 AM EDT	Severe Thunderstorm Warning	IND	39 min
May 1, 2:11 AM EDT	Tornado Watch	SPC	6 hr
May 1, 10:45 PM EDT	Mesoscale Discussion	SPC	30 min
May 1, 11:14 PM EDT	Tornado Watch	SPC	7 hr
May 2, 3:09 AM EDT	Mesoscale Discussion	SPC	2 hr
May 2, 11:28 AM EDT	River Flood Warning	IND	21 hr
May 2, 11:28 AM EDT	River Flood Warning	IND	44 hr
May 2, 11:28 AM EDT	River Flood Warning	IND	44 hr
May 2, 11:28 AM EDT	River Flood Warning	IND	44 hr
May 3, 2:45 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
May 3, 6:12 PM EDT	Mesoscale Discussion	SPC	93 min
May 5, 9:33 PM EDT	Special Weather Statement	IND	27 min
May 5, 10:23 PM EDT	Special Weather Statement	IND	37 min
May 7, 3:30 PM EDT	Tornado Watch	SPC	9 hr
May 12, 8:21 AM EDT	Flash Flood Warning	IND	3 hr
May 13, 1:46 PM EDT	Tornado Watch	SPC	6 hr
May 21, 11:23 AM EDT	River Flood Warning	IND	27 hr
May 21, 11:23 AM EDT	River Flood Warning	IND	10 days
May 21, 11:23 AM EDT	River Flood Warning	IND	9 days
May 21, 11:26 AM EDT	Mesoscale Discussion	SPC	64 min
May 21, 1:33 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 21, 3:08 PM EDT	Severe Thunderstorm Warning	IND	52 min
May 21, 3:39 PM EDT	Severe Thunderstorm Warning	IND	51 min
May 21, 3:58 PM EDT	Tornado Warning	IND	32 min
May 22, 2:09 PM EDT	River Flood Warning	IND	23 hr
May 22, 2:09 PM EDT	River Flood Warning	IND	23 hr
May 22, 2:09 PM EDT	River Flood Warning	IND	46 hr
May 23, 11:43 AM EDT	River Flood Warning	IND	25 hr
Jun 2, 2:31 AM EDT	Mesoscale Discussion	SPC	89 min
Jun 2, 2:54 AM EDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 2, 5:33 AM EDT	Mesoscale Discussion	SPC	87 min
Jun 2, 5:53 AM EDT	Severe Thunderstorm Warning	IND	67 min
Jun 2, 11:55 AM EDT	Flash Flood Watch	IND	21 hr
Jun 3, 4:26 AM EDT	Areal Flood Advisory	IND	4 hr
Jun 4, 1:14 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 4, 3:45 PM EDT	Mesoscale Discussion	SPC	60 min
Jun 9, 11:26 AM EDT	River Flood Advisory	IND	36 hr
Jun 9, 11:26 AM EDT	River Flood Advisory	IND	36 hr
Jun 9, 11:26 AM EDT	River Flood Advisory	IND	36 hr
Jun 10, 11:28 AM EDT	River Flood Warning	IND	69 hr
Jun 10, 9:40 PM EDT	Special Weather Statement	IND	50 min
Jun 11, 12:22 PM EDT	Severe Thunderstorm Warning	IND	53 min
Jun 11, 3:26 PM EDT	Flash Flood Watch	IND	13 hr
Jun 11, 5:41 PM EDT	Severe Thunderstorm Warning	IND	49 min
Jun 12, 1:08 PM EDT	Heat Advisory	IND	6 hr
Jun 12, 1:50 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 12, 4:49 PM EDT	Mesoscale Discussion	SPC	86 min
Jun 12, 5:47 PM EDT	Mesoscale Discussion	SPC	88 min
Jun 13, 11:48 AM EDT	River Flood Warning	IND	22 days
Jun 13, 11:48 AM EDT	River Flood Warning	IND	22 days
Jun 13, 7:13 PM EDT	Mesoscale Discussion	SPC	62 min
Jun 14, 11:04 AM EDT	Flash Flood Watch	IND	44 hr
Jun 14, 11:10 AM EDT	River Flood Warning	IND	16 days
Jun 14, 11:10 AM EDT	River Flood Warning	IND	16 days
Jun 14, 11:10 AM EDT	River Flood Warning	IND	17 days
Jun 14, 11:10 AM EDT	River Flood Warning	IND	19 days
Jun 14, 11:10 AM EDT	River Flood Warning	IND	20 days
Jun 14, 11:10 AM EDT	River Flood Warning	IND	21 days
Jun 14, 11:10 AM EDT	River Flood Warning	IND	21 days
Jun 14, 2:45 PM EDT	Mesoscale Discussion	SPC	60 min
Jun 14, 3:17 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 14, 6:48 PM EDT	Severe Thunderstorm Warning	IND	42 min
Jun 14, 7:43 PM EDT	Areal Flood Warning	IND	5 hr
Jun 15, 12:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 15, 1:29 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 15, 3:42 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 15, 5:46 PM EDT	Severe Thunderstorm Warning	IND	59 min
Jun 15, 5:48 PM EDT	Flash Flood Warning	IND	6 hr
Jun 15, 6:29 PM EDT	Severe Thunderstorm Warning	IND	46 min
Jun 15, 6:58 PM EDT	Mesoscale Discussion	SPC	62 min
Jun 18, 3:33 PM EDT	Heat Advisory	IND	22 hr
Jun 18, 3:33 PM EDT	Heat Advisory	IND	51 hr
Jun 19, 3:22 AM EDT	Heat Advisory	IND	57 hr
Jun 19, 3:33 AM EDT	Mesoscale Discussion	SPC	57 min
Jun 19, 4:04 AM EDT	Special Weather Statement	IND	56 min
Jun 19, 4:11 AM EDT	Areal Flood Advisory	IND	3 hr
Jun 21, 4:08 PM EDT	Flash Flood Watch	IND	24 hr
Jun 21, 4:10 PM EDT	Heat Advisory	IND	22 hr
Jun 21, 6:35 PM EDT	Mesoscale Discussion	SPC	55 min
Jun 22, 11:03 AM EDT	Mesoscale Discussion	SPC	57 min
Jun 22, 11:35 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 22, 2:38 PM EDT	Mesoscale Discussion	SPC	67 min
Jun 23, 4:18 AM EDT	Heat Advisory	IND	16 hr
Jun 25, 3:06 PM EDT	Heat Advisory	IND	29 hr
Jun 26, 2:53 PM EDT	Flash Flood Watch	IND	44 hr
Jun 27, 4:06 AM EDT	Heat Advisory	IND	15 hr
Jun 27, 8:26 PM EDT	Mesoscale Discussion	SPC	94 min
Jul 8, 7:40 PM EDT	Special Weather Statement	IND	65 min
Jul 13, 2:48 PM EDT	Heat Advisory	IND	27 hr
Jul 14, 3:08 PM EDT	Heat Advisory	IND	29 hr
Jul 15, 9:54 PM EDT	Areal Flood Advisory	IND	4 hr
Jul 17, 3:49 AM EDT	Heat Advisory	IND	16 hr
Jul 18, 1:47 AM EDT	Flash Flood Warning	IND	3 hr
Jul 18, 3:46 AM EDT	Heat Advisory	IND	6 hr
Jul 18, 4:30 AM EDT	Areal Flood Warning	IND	2 hr
Jul 18, 11:04 AM EDT	River Flood Warning	IND	25 hr
Jul 19, 3:21 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 19, 3:36 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 19, 4:26 PM EDT	Severe Thunderstorm Warning	IND	34 min
Jul 19, 4:44 PM EDT	Severe Thunderstorm Warning	IND	16 min
Jul 19, 4:56 PM EDT	Severe Thunderstorm Warning	IND	49 min
Jul 20, 12:52 PM EDT	Flash Flood Watch	IND	19 hr
Jul 22, 9:34 AM EDT	Heat Advisory	IND	9 hr
Jul 22, 3:32 PM EDT	Heat Advisory	IND	27 hr
Jul 23, 3:52 PM EDT	Heat Advisory	IND	28 hr
Jul 28, 3:49 AM EDT	Heat Advisory	IND	15 hr
Jul 28, 4:29 PM EDT	Areal Flood Advisory	IND	3 hr
Aug 2, 3:12 PM EDT	Heat Advisory	IND	20 hr
Aug 3, 3:16 PM EDT	Heat Advisory	IND	29 hr
Aug 4, 5:30 AM EDT	Excessive Heat Warning	IND	15 hr
Aug 8, 3:25 PM EDT	Excessive Heat Watch	IND	36 hr
Aug 8, 3:25 PM EDT	Heat Advisory	IND	30 hr
Aug 10, 2:59 AM EDT	Excessive Heat Watch	IND	24 hr
Aug 10, 2:59 AM EDT	Excessive Heat Warning	IND	17 hr
Aug 11, 3:12 AM EDT	Excessive Heat Warning	IND	4 days
Aug 14, 3:01 PM EDT	Heat Advisory	IND	29 hr
Sep 5, 3:18 PM EDT	Fire Weather Watch	IND	15 hr
Sep 6, 6:15 AM EDT	Red Flag Warning	IND	14 hr
Sep 22, 3:32 PM EDT	Fire Weather Watch	IND	28 hr
Sep 23, 10:02 AM EDT	Red Flag Warning	IND	10 hr
Sep 29, 3:08 PM EDT	Fire Weather Watch	IND	29 hr
Oct 4, 2:34 PM EDT	Frost Advisory	IND	17 hr
Oct 10, 3:59 PM EDT	Fire Weather Watch	IND	15 hr
Oct 15, 12:24 PM EDT	Red Flag Warning	IND	6 hr
Oct 20, 6:51 AM EDT	Fire Weather Watch	IND	20 hr
Oct 20, 6:51 AM EDT	Red Flag Warning	IND	13 hr
Oct 21, 3:08 AM EDT	Red Flag Warning	IND	17 hr
Oct 21, 3:14 PM EDT	Frost Advisory	IND	18 hr
Oct 22, 3:27 PM EDT	Fire Weather Watch	IND	13 hr
Oct 23, 4:10 AM EDT	Red Flag Warning	IND	14 hr
Oct 25, 3:58 AM EDT	High Wind Watch	IND	11 hr
Oct 25, 2:58 PM EDT	Wind Advisory	IND	28 hr
Oct 26, 4:28 AM EDT	Tornado Watch	SPC	8 hr
Oct 26, 7:00 AM EDT	Mesoscale Discussion	SPC	2 hr
Oct 26, 8:14 AM EDT	Severe Thunderstorm Warning	IND	46 min
Oct 26, 8:52 AM EDT	Severe Thunderstorm Warning	IND	38 min
Oct 28, 3:17 AM EDT	Freeze Warning	IND	31 hr
Oct 29, 3:14 PM EDT	Fire Weather Watch	IND	12 hr
Oct 30, 3:32 AM EDT	Red Flag Warning	IND	15 hr
Nov 20, 4:36 AM EST	Dense Fog Advisory	IND	5 hr
Nov 23, 12:22 AM EST	Special Weather Statement	IND	53 min
Nov 24, 3:19 AM EST	Flood Watch	IND	43 hr
Nov 24, 10:05 AM EST	River Flood Warning	IND	49 hr
Nov 24, 10:05 AM EST	River Flood Warning	IND	49 hr
Nov 25, 4:43 AM EST	Severe Thunderstorm Warning	IND	47 min
Dec 3, 2:47 PM EST	Winter Weather Advisory	IND	28 hr
Dec 11, 4:05 PM EST	Winter Weather Advisory	IND	45 hr
Dec 15, 4:08 AM EST	Winter Weather Advisory	IND	33 hr
Dec 15, 10:41 AM EST	Winter Storm Warning	IND	26 hr
Dec 15, 7:18 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 23, 3:12 PM EST	Winter Weather Advisory	IND	38 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	15
Tornado Warning	1
Severe Thunderstorm Watch	9
Tornado Watch	8
Mesoscale Discussion	27
Special Weather Statement	6
Flooding
Areal Flood Warning	2
Flash Flood Warning	3
River Flood Warning	61
Flash Flood Watch	7
Flood Watch	1
Areal Flood Advisory	4
River Flood Advisory	7
Winter
Winter Storm Warning	3
Winter Storm Watch	4
Winter Weather Advisory	8
Heat
Excessive Heat Warning	3
Excessive Heat Watch	2
Heat Advisory	20
Cold
Freeze Warning	2
Frost Advisory	3
Wind and dust
High Wind Watch	1
Wind Advisory	1
Fire
Red Flag Warning	9
Fire Weather Watch	8
Fog and smoke
Dense Fog Advisory	6
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 2009 2011

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.