Alert archive / Tennessee / Hamilton County

Weather alerts in Hamilton County, Tennessee, 2023

176 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Hamilton County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts: 176
Warnings: 66
Watches: 22
Advisories: 22
Busiest month: August43 alerts
Busiest day: June 25, 202313 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 3 tornado warnings covering Hamilton County in 2023 had a tornado report inside them.

Hamilton County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	50	44	12%	29	79%	19 min
Flash flood warnings	1	0	100%	1	0%

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Morristown, TN: tornado warnings	29	4	86%	10	60%	11 min
NWS Morristown, TN: severe thunderstorm warnings	282	246	13%	385	89%	22 min
NWS Morristown, TN: flash flood warnings	45	25	44%	48	79%	51 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 3, 2:08 PM EST	Special Weather Statement	MRX	52 min
Jan 3, 2:17 PM EST	Severe Thunderstorm Warning	MRX	43 min
Jan 3, 2:39 PM EST	Severe Thunderstorm Warning	MRX	51 min
Jan 3, 2:46 PM EST	Severe Thunderstorm Warning	MRX	44 min
Jan 12, 10:13 AM EST	Mesoscale Discussion	SPC	62 min
Jan 12, 11:03 AM EST	Tornado Watch	SPC	6 hr
Jan 12, 11:26 AM EST	Special Weather Statement	MRX	34 min
Jan 12, 11:49 AM EST	Severe Thunderstorm Warning	MRX	41 min
Jan 17, 6:48 PM EST	Dense Fog Advisory	MRX	16 hr
Jan 18, 4:10 AM EST	Wind Advisory	MRX	39 hr
Jan 23, 3:38 PM EST	Wind Advisory	MRX	51 hr
Jan 30, 10:24 PM EST	Dense Fog Advisory	MRX	12 hr
Feb 8, 3:32 AM EST	Wind Advisory	MRX	39 hr
Feb 16, 6:57 PM EST	Mesoscale Discussion	SPC	93 min
Feb 17, 2:14 AM EST	River Flood Warning	FFC	27 hr
Feb 26, 3:26 AM EST	Wind Advisory	MRX	52 hr
Mar 1, 11:09 PM EST	Mesoscale Discussion	SPC	96 min
Mar 2, 12:20 AM EST	Special Weather Statement	MRX	55 min
Mar 2, 12:22 AM EST	Tornado Watch	SPC	3 hr
Mar 2, 1:04 AM EST	Severe Thunderstorm Warning	MRX	41 min
Mar 2, 1:11 AM EST	Tornado Warning	MRX	28 min
Mar 2, 1:38 AM EST	Tornado Warning	MRX	37 min
Mar 2, 3:35 AM EST	High Wind Watch	MRX	12 hr
Mar 2, 3:34 PM EST	High Wind Warning	MRX	35 hr
Mar 3, 11:34 AM EST	Tornado Watch	SPC	5 hr
Mar 3, 1:39 PM EST	Severe Thunderstorm Warning Considerable damage threat	MRX	66 min
Mar 3, 2:07 PM EST	Severe Thunderstorm Warning Considerable damage threat	MRX	53 min
Mar 12, 3:20 PM EDT	Freeze Watch	MRX	12 hr
Mar 13, 3:09 AM EDT	Freeze Warning	MRX	34 hr
Mar 14, 3:29 AM EDT	Freeze Warning	MRX	32 hr
Mar 15, 3:44 AM EDT	Freeze Warning	MRX	30 hr
Mar 17, 3:26 AM EDT	Freeze Watch	MRX	7 hr
Mar 17, 10:10 AM EDT	Freeze Warning	MRX	23 hr
Mar 18, 2:59 AM EDT	Freeze Warning	MRX	34 hr
Mar 18, 3:33 PM EDT	Freeze Warning	MRX	43 hr
Mar 19, 3:30 PM EDT	Freeze Watch	MRX	12 hr
Mar 20, 3:09 AM EDT	Freeze Warning	MRX	30 hr
Mar 24, 3:11 PM EDT	Wind Advisory	MRX	15 hr
Mar 25, 1:03 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
Mar 25, 2:32 AM EDT	Severe Thunderstorm Warning	MRX	31 min
Mar 25, 2:35 AM EDT	Severe Thunderstorm Warning	MRX	55 min
Mar 25, 2:52 AM EDT	Severe Thunderstorm Warning	MRX	38 min
Mar 25, 2:54 AM EDT	Mesoscale Discussion	SPC	2 hr
Mar 31, 3:05 AM EDT	Wind Advisory	MRX	41 hr
Apr 1, 2:49 AM EDT	Tornado Watch	SPC	4 hr
Apr 1, 4:46 AM EDT	Mesoscale Discussion	SPC	89 min
Apr 1, 5:33 AM EDT	Severe Thunderstorm Warning	MRX	42 min
Apr 1, 5:50 AM EDT	Tornado Warning	MRX	40 min
Apr 19, 3:39 PM EDT	Fire Weather Watch	MRX	13 hr
Apr 20, 4:37 AM EDT	Red Flag Warning	MRX	15 hr
Apr 21, 10:32 PM EDT	Special Weather Statement	MRX	43 min
Apr 23, 3:00 AM EDT	Frost Advisory	MRX	30 hr
May 7, 5:31 PM EDT	Mesoscale Discussion	SPC	119 min
May 7, 9:58 PM EDT	Special Weather Statement	MRX	62 min
May 15, 2:27 PM EDT	Mesoscale Discussion	SPC	2 hr
May 15, 2:35 PM EDT	Special Weather Statement	MRX	40 min
May 15, 3:32 PM EDT	Special Weather Statement	MRX	28 min
Jun 4, 7:01 PM EDT	Special Weather Statement	MRX	44 min
Jun 4, 7:17 PM EDT	Special Weather Statement	MRX	43 min
Jun 5, 2:49 PM EDT	Mesoscale Discussion	SPC	116 min
Jun 5, 3:28 PM EDT	Special Weather Statement	MRX	47 min
Jun 5, 5:21 PM EDT	Severe Thunderstorm Warning	MRX	39 min
Jun 5, 10:19 PM EDT	Severe Thunderstorm Warning	MRX	26 min
Jun 11, 7:22 PM EDT	Mesoscale Discussion	SPC	23 min
Jun 11, 7:46 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 11, 10:37 PM EDT	Special Weather Statement	MRX	38 min
Jun 11, 10:50 PM EDT	Mesoscale Discussion	SPC	85 min
Jun 15, 2:40 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 15, 2:57 PM EDT	Special Weather Statement	MRX	48 min
Jun 15, 3:26 PM EDT	Severe Thunderstorm Warning	MRX	49 min
Jun 15, 4:10 PM EDT	Special Weather Statement	MRX	50 min
Jun 25, 11:30 AM EDT	Mesoscale Discussion	SPC	2 hr
Jun 25, 1:33 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 25, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 25, 2:40 PM EDT	Severe Thunderstorm Warning Considerable damage threat	MRX	17 min
Jun 25, 2:54 PM EDT	Severe Thunderstorm Warning	MRX	51 min
Jun 25, 3:25 PM EDT	Areal Flood Advisory	MRX	2 hr
Jun 25, 3:27 PM EDT	Severe Thunderstorm Warning	MRX	33 min
Jun 25, 3:44 PM EDT	Severe Thunderstorm Warning	MRX	46 min
Jun 25, 3:48 PM EDT	Severe Thunderstorm Warning	MRX	42 min
Jun 25, 3:54 PM EDT	Mesoscale Discussion	SPC	66 min
Jun 25, 4:09 PM EDT	Severe Thunderstorm Warning	MRX	51 min
Jun 25, 4:29 PM EDT	Areal Flood Advisory	MRX	3 hr
Jun 25, 5:08 PM EDT	Special Weather Statement	MRX	37 min
Jun 30, 10:49 AM EDT	Severe Thunderstorm Warning	MRX	41 min
Jun 30, 11:08 AM EDT	Mesoscale Discussion	SPC	97 min
Jun 30, 11:18 AM EDT	Areal Flood Advisory	MRX	2 hr
Jun 30, 11:28 AM EDT	Special Weather Statement	MRX	32 min
Jul 1, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 1, 3:57 PM EDT	Mesoscale Discussion	SPC	93 min
Jul 1, 4:06 PM EDT	Severe Thunderstorm Warning	MRX	39 min
Jul 1, 4:22 PM EDT	Special Weather Statement	MRX	38 min
Jul 1, 4:31 PM EDT	Severe Thunderstorm Warning	MRX	44 min
Jul 2, 11:16 AM EDT	Mesoscale Discussion	SPC	89 min
Jul 2, 1:14 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 2, 3:40 PM EDT	Severe Thunderstorm Warning	MRX	50 min
Jul 2, 4:20 PM EDT	Severe Thunderstorm Warning	MRX	40 min
Jul 5, 8:02 AM EDT	Flash Flood Warning	MRX	108 min
Jul 5, 8:29 AM EDT	Areal Flood Advisory	MRX	2 hr
Jul 6, 7:17 PM EDT	Special Weather Statement	MRX	43 min
Jul 6, 7:59 PM EDT	Special Weather Statement	MRX	31 min
Jul 18, 4:40 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 18, 6:46 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 18, 6:51 PM EDT	Severe Thunderstorm Warning	MRX	54 min
Jul 18, 7:40 PM EDT	Special Weather Statement	MRX	65 min
Jul 20, 1:45 PM EDT	Severe Thunderstorm Warning	MRX	45 min
Jul 20, 2:16 PM EDT	Severe Thunderstorm Warning	MRX	44 min
Jul 20, 2:46 PM EDT	Mesoscale Discussion	SPC	89 min
Jul 20, 3:09 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 20, 3:18 PM EDT	Severe Thunderstorm Warning	MRX	42 min
Jul 20, 3:55 PM EDT	Severe Thunderstorm Warning	MRX	50 min
Jul 20, 4:39 PM EDT	Mesoscale Discussion	SPC	96 min
Jul 21, 3:06 PM EDT	Mesoscale Discussion	SPC	114 min
Jul 21, 3:22 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 21, 6:50 PM EDT	Mesoscale Discussion	SPC	85 min
Jul 25, 6:09 PM EDT	Severe Thunderstorm Warning	MRX	51 min
Jul 29, 2:47 PM EDT	Mesoscale Discussion	SPC	118 min
Jul 29, 7:53 PM EDT	Special Weather Statement	MRX	52 min
Aug 6, 5:34 AM EDT	Special Weather Statement	MRX	41 min
Aug 6, 6:43 AM EDT	Special Weather Statement	MRX	47 min
Aug 6, 5:28 PM EDT	Special Weather Statement	MRX	47 min
Aug 7, 10:33 AM EDT	Mesoscale Discussion	SPC	117 min
Aug 7, 11:17 AM EDT	Tornado Watch	SPC	7 hr
Aug 7, 1:08 PM EDT	Severe Thunderstorm Warning Considerable damage threat	MRX	52 min
Aug 7, 1:36 PM EDT	Mesoscale Discussion	SPC	114 min
Aug 7, 1:49 PM EDT	Severe Thunderstorm Warning	MRX	41 min
Aug 7, 2:00 PM EDT	Severe Thunderstorm Warning Considerable damage threat	MRX	45 min
Aug 7, 2:24 PM EDT	Severe Thunderstorm Warning	MRX	51 min
Aug 7, 2:51 PM EDT	Areal Flood Advisory	MRX	114 min
Aug 9, 4:42 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 6:00 PM EDT	Special Weather Statement	MRX	30 min
Aug 9, 6:25 PM EDT	Special Weather Statement	MRX	50 min
Aug 10, 4:01 AM EDT	Special Weather Statement	MRX	44 min
Aug 10, 4:18 AM EDT	Severe Thunderstorm Warning	MRX	57 min
Aug 10, 4:57 AM EDT	Severe Thunderstorm Warning	MRX	63 min
Aug 12, 10:39 AM EDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 11:50 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 12, 1:33 PM EDT	Severe Thunderstorm Warning	MRX	42 min
Aug 12, 1:57 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 12, 1:59 PM EDT	Severe Thunderstorm Warning	MRX	46 min
Aug 12, 2:06 PM EDT	Severe Thunderstorm Warning	MRX	39 min
Aug 12, 2:13 PM EDT	Special Weather Statement	MRX	47 min
Aug 12, 2:26 PM EDT	Severe Thunderstorm Warning Considerable damage threat	MRX	49 min
Aug 12, 2:35 PM EDT	Severe Thunderstorm Warning Considerable damage threat	MRX	40 min
Aug 12, 2:48 PM EDT	Severe Thunderstorm Warning	MRX	42 min
Aug 12, 3:08 PM EDT	Severe Thunderstorm Warning	MRX	41 min
Aug 12, 3:34 PM EDT	Severe Thunderstorm Warning	MRX	41 min
Aug 13, 3:17 PM EDT	Heat Advisory	MRX	29 hr
Aug 13, 5:49 PM EDT	Mesoscale Discussion	SPC	56 min
Aug 13, 7:05 PM EDT	Special Weather Statement	MRX	40 min
Aug 13, 7:07 PM EDT	Special Weather Statement	MRX	38 min
Aug 14, 8:18 PM EDT	Severe Thunderstorm Warning	MRX	42 min
Aug 14, 8:33 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 15, 12:01 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 15, 1:35 AM EDT	Severe Thunderstorm Warning	MRX	40 min
Aug 15, 1:50 AM EDT	Severe Thunderstorm Warning	MRX	25 min
Aug 24, 11:18 AM EDT	Heat Advisory	MRX	8 hr
Aug 24, 1:08 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 25, 3:31 AM EDT	Heat Advisory	MRX	16 hr
Aug 26, 3:32 AM EDT	Heat Advisory	MRX	16 hr
Aug 28, 6:14 PM EDT	Areal Flood Advisory	MRX	4 hr
Sep 9, 3:31 PM EDT	Special Weather Statement	MRX	29 min
Sep 9, 4:51 PM EDT	Special Weather Statement	MRX	39 min
Sep 27, 4:27 PM EDT	Severe Thunderstorm Warning	MRX	48 min
Sep 27, 5:33 PM EDT	Special Weather Statement	MRX	42 min
Oct 30, 3:42 AM EDT	Freeze Watch	MRX	24 hr
Oct 31, 3:37 AM EDT	Freeze Warning	MRX	30 hr
Nov 1, 4:09 AM EDT	Freeze Warning	MRX	29 hr
Dec 2, 3:22 AM EST	Dense Fog Advisory	MRX	8 hr
Dec 9, 7:39 PM EST	Mesoscale Discussion	SPC	96 min
Dec 9, 8:48 PM EST	Tornado Watch	SPC	7 hr
Dec 9, 10:31 PM EST	Mesoscale Discussion	SPC	119 min
Dec 9, 11:11 PM EST	Areal Flood Advisory	MRX	3 hr
Dec 9, 11:37 PM EST	Severe Thunderstorm Warning	MRX	13 min
Dec 9, 11:52 PM EST	Special Weather Statement	MRX	53 min
Dec 10, 12:03 AM EST	Areal Flood Advisory	MRX	3 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	50
Tornado Warning	3
Severe Thunderstorm Watch	10
Tornado Watch	6
Mesoscale Discussion	33
Special Weather Statement	33
Flooding
Flash Flood Warning	1
River Flood Warning	1
Areal Flood Advisory	8
Heat
Heat Advisory	4
Cold
Freeze Warning	9
Freeze Watch	4
Frost Advisory	1
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	6
Fire
Red Flag Warning	1
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	3

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2022 2024

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.