Alert archive / Tennessee / Monroe County

Weather alerts in Monroe County, Tennessee, 2009

204 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Monroe County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 204
Warnings: 75
Watches: 33
Advisories: 57
Busiest month: June50 alerts
Busiest day: June 18, 200911 alerts

Over time

By month

Warning verification

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

3 of 7 tornado warnings covering Monroe County in 2009 had a tornado report inside them.

Monroe County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	7	3	57%	0
Severe thunderstorm warnings	44	34	23%	22	82%	28 min
Flash flood warnings	5	4	20%	3	100%	86 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Morristown, TN: tornado warnings	41	11	73%	14	93%	22 min
NWS Morristown, TN: severe thunderstorm warnings	335	252	25%	434	87%	26 min
NWS Morristown, TN: flash flood warnings	39	29	26%	59	76%	75 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, 12:43 AM EST	Dense Fog Advisory	MRX	9 hr
Jan 5, 3:51 AM EST	Flood Watch	MRX	51 hr
Jan 6, 10:32 AM EST	Areal Flood Warning	MRX	8 hr
Jan 6, 5:55 PM EST	Areal Flood Warning	MRX	16 hr
Jan 10, 9:39 AM EST	Wind Advisory	MRX	12 hr
Jan 17, 10:37 PM EST	Freezing Rain Advisory	MRX	11 hr
Jan 18, 4:12 AM EST	Winter Weather Advisory	MRX	63 hr
Feb 2, 10:38 AM EST	Winter Weather Advisory	MRX	5 hr
Feb 3, 4:28 AM EST	Winter Weather Advisory	MRX	47 hr
Feb 3, 2:57 PM EST	Wind Chill Advisory	MRX	22 hr
Feb 10, 11:45 AM EST	High Wind Watch	MRX	3 hr
Feb 10, 2:56 PM EST	High Wind Warning	MRX	36 hr
Feb 10, 2:56 PM EST	Wind Advisory	MRX	45 hr
Feb 11, 11:02 AM EST	Mesoscale Discussion	SPC	88 min
Feb 11, 1:35 PM EST	Mesoscale Discussion	SPC	85 min
Feb 11, 1:59 PM EST	Tornado Watch	SPC	7 hr
Feb 11, 3:44 PM EST	Severe Thunderstorm Warning	MRX	55 min
Feb 11, 4:19 PM EST	Tornado Warning	MRX	26 min
Feb 11, 4:26 PM EST	Severe Thunderstorm Warning	MRX	64 min
Feb 11, 4:34 PM EST	Mesoscale Discussion	SPC	86 min
Feb 17, 3:45 PM EST	Wind Advisory	MRX	26 hr
Feb 18, 12:09 PM EST	Tornado Watch	SPC	6 hr
Feb 18, 2:33 PM EST	Mesoscale Discussion	SPC	87 min
Feb 18, 3:18 PM EST	Severe Thunderstorm Warning	MRX	57 min
Feb 18, 4:08 PM EST	Tornado Warning	MRX	37 min
Feb 18, 4:13 PM EST	Severe Thunderstorm Warning	MRX	32 min
Feb 26, 3:15 PM EST	Wind Advisory	MRX	19 hr
Feb 28, 3:07 PM EST	Winter Weather Advisory	MRX	28 hr
Mar 20, 2:43 PM EDT	Freeze Warning	MRX	18 hr
Mar 24, 3:32 PM EDT	Wind Advisory	MRX	44 hr
Mar 28, 7:23 PM EDT	Wind Advisory	MRX	20 hr
Apr 2, 5:02 AM EDT	Wind Advisory	MRX	35 hr
Apr 2, 6:25 PM EDT	Mesoscale Discussion	SPC	95 min
Apr 2, 7:02 PM EDT	Tornado Watch	SPC	7 hr
Apr 2, 11:00 PM EDT	Mesoscale Discussion	SPC	60 min
Apr 2, 11:37 PM EDT	Severe Thunderstorm Warning	MRX	53 min
Apr 2, 11:45 PM EDT	Severe Thunderstorm Warning	MRX	60 min
Apr 3, 12:50 AM EDT	Mesoscale Discussion	SPC	85 min
Apr 5, 3:02 PM EDT	Winter Storm Watch	MRX	21 hr
Apr 5, 8:12 PM EDT	Mesoscale Discussion	SPC	63 min
Apr 6, 12:24 PM EDT	Winter Storm Warning	MRX	33 hr
Apr 6, 3:27 PM EDT	Freeze Watch	MRX	12 hr
Apr 6, 3:27 PM EDT	Freeze Warning	MRX	12 hr
Apr 7, 3:54 AM EDT	Freeze Warning	MRX	30 hr
Apr 10, 12:23 PM EDT	Tornado Watch PDS	SPC	8 hr
Apr 10, 4:37 PM EDT	Severe Thunderstorm Warning	MRX	53 min
Apr 10, 4:43 PM EDT	Tornado Warning	MRX	62 min
Apr 12, 8:40 PM EDT	Wind Advisory	MRX	18 hr
Apr 13, 5:15 AM EDT	High Wind Warning	MRX	10 hr
Apr 21, 2:17 PM EDT	Wind Advisory	MRX	6 hr
May 2, 2:54 PM EDT	Flood Watch	MRX	44 hr
May 5, 3:29 PM EDT	Flood Watch	MRX	31 hr
May 6, 11:44 PM EDT	Mesoscale Discussion	SPC	91 min
May 7, 2:13 AM EDT	Severe Thunderstorm Warning	MRX	32 min
May 8, 9:10 AM EDT	Severe Thunderstorm Warning	MRX	50 min
May 8, 1:44 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
May 8, 4:37 PM EDT	Severe Thunderstorm Warning	MRX	53 min
May 8, 4:42 PM EDT	Tornado Watch	SPC	7 hr
May 8, 4:46 PM EDT	Severe Thunderstorm Warning	MRX	59 min
May 8, 4:58 PM EDT	Tornado Warning	MRX	62 min
May 8, 6:03 PM EDT	Mesoscale Discussion	SPC	87 min
May 8, 8:30 PM EDT	Mesoscale Discussion	SPC	90 min
May 14, 7:29 PM EDT	Severe Thunderstorm Warning	MRX	46 min
May 14, 8:19 PM EDT	Severe Thunderstorm Warning	MRX	41 min
May 14, 9:05 PM EDT	Severe Thunderstorm Warning	MRX	40 min
May 15, 1:57 PM EDT	Mesoscale Discussion	SPC	63 min
May 15, 3:03 PM EDT	Areal Flood Advisory	MRX	3 hr
May 15, 4:27 PM EDT	Severe Thunderstorm Warning	MRX	63 min
May 15, 5:01 PM EDT	Areal Flood Advisory	MRX	3 hr
May 15, 5:28 PM EDT	Flash Flood Warning	MRX	3 hr
May 15, 5:31 PM EDT	Severe Thunderstorm Warning	MRX	44 min
May 15, 6:12 PM EDT	Severe Thunderstorm Warning	MRX	63 min
May 16, 2:45 AM EDT	Flash Flood Watch	MRX	19 hr
May 18, 9:22 PM EDT	Frost Advisory	MRX	12 hr
May 24, 7:18 PM EDT	Areal Flood Advisory	MRX	117 min
May 28, 1:28 PM EDT	Mesoscale Discussion	SPC	62 min
May 28, 2:21 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 28, 3:59 PM EDT	Severe Thunderstorm Warning	MRX	46 min
May 28, 4:45 PM EDT	Areal Flood Advisory	MRX	2 hr
May 28, 4:54 PM EDT	Mesoscale Discussion	SPC	66 min
May 28, 5:10 PM EDT	Flash Flood Warning	MRX	2 hr
May 28, 7:34 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 4, 3:51 PM EDT	Areal Flood Advisory	MRX	54 min
Jun 4, 4:09 PM EDT	Flash Flood Warning	MRX	2 hr
Jun 4, 7:38 PM EDT	Areal Flood Advisory	MRX	112 min
Jun 4, 10:48 PM EDT	Areal Flood Advisory	MRX	57 min
Jun 10, 2:30 PM EDT	Severe Thunderstorm Warning	MRX	60 min
Jun 10, 2:31 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 10, 8:42 PM EDT	Severe Thunderstorm Warning	MRX	48 min
Jun 10, 9:20 PM EDT	Severe Thunderstorm Warning	MRX	25 min
Jun 11, 9:40 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jun 11, 12:18 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 11, 12:54 PM EDT	Severe Thunderstorm Warning	MRX	51 min
Jun 11, 1:18 PM EDT	Severe Thunderstorm Warning	MRX	57 min
Jun 11, 1:44 PM EDT	Severe Thunderstorm Warning	MRX	46 min
Jun 11, 9:18 PM EDT	Tornado Watch	SPC	4 hr
Jun 11, 11:29 PM EDT	Mesoscale Discussion	SPC	61 min
Jun 16, 2:10 PM EDT	Mesoscale Discussion	SPC	35 min
Jun 16, 4:29 PM EDT	Mesoscale Discussion	SPC	61 min
Jun 16, 5:57 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 17, 12:54 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 17, 3:17 PM EDT	Mesoscale Discussion	SPC	28 min
Jun 17, 4:07 PM EDT	Mesoscale Discussion	SPC	23 min
Jun 17, 8:10 PM EDT	Areal Flood Advisory	MRX	3 hr
Jun 17, 8:13 PM EDT	Severe Thunderstorm Warning	MRX	47 min
Jun 17, 8:47 PM EDT	Severe Thunderstorm Warning	MRX	58 min
Jun 17, 9:49 PM EDT	Severe Thunderstorm Warning	MRX	56 min
Jun 17, 10:16 PM EDT	Severe Thunderstorm Warning	MRX	59 min
Jun 17, 10:32 PM EDT	Mesoscale Discussion	SPC	28 min
Jun 17, 11:17 PM EDT	Severe Thunderstorm Warning	MRX	44 min
Jun 18, 10:15 AM EDT	Mesoscale Discussion	SPC	90 min
Jun 18, 10:39 AM EDT	Severe Thunderstorm Watch PDS	SPC	7 hr
Jun 18, 1:48 PM EDT	Mesoscale Discussion	SPC	57 min
Jun 18, 2:54 PM EDT	Severe Thunderstorm Warning	MRX	66 min
Jun 21, 5:58 PM EDT	Severe Thunderstorm Warning	MRX	62 min
Jun 22, 11:19 AM EDT	Mesoscale Discussion	SPC	116 min
Jun 22, 12:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 2:18 PM EDT	Areal Flood Advisory	MRX	3 hr
Jun 22, 2:36 PM EDT	Severe Thunderstorm Warning	MRX	54 min
Jun 22, 3:02 PM EDT	Severe Thunderstorm Warning	MRX	58 min
Jun 22, 3:24 PM EDT	Severe Thunderstorm Warning	MRX	66 min
Jun 22, 3:35 PM EDT	Severe Thunderstorm Warning	MRX	25 min
Jun 22, 3:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 27, 2:06 PM EDT	Mesoscale Discussion	SPC	54 min
Jun 28, 12:39 PM EDT	Mesoscale Discussion	SPC	66 min
Jun 28, 1:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 28, 2:33 PM EDT	Severe Thunderstorm Warning	MRX	57 min
Jun 28, 3:24 PM EDT	Mesoscale Discussion	SPC	66 min
Jun 28, 3:29 PM EDT	Severe Thunderstorm Warning	MRX	61 min
Jun 28, 4:29 PM EDT	Severe Thunderstorm Warning	MRX	46 min
Jun 28, 4:52 PM EDT	Mesoscale Discussion	SPC	53 min
Jun 28, 7:27 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 5, 8:18 PM EDT	Severe Thunderstorm Warning	MRX	42 min
Jul 8, 3:51 PM EDT	Areal Flood Advisory	MRX	3 hr
Jul 9, 6:00 PM EDT	Areal Flood Advisory	MRX	3 hr
Jul 30, 3:14 PM EDT	Flood Watch	MRX	24 hr
Jul 31, 6:22 AM EDT	Areal Flood Advisory	MRX	3 hr
Jul 31, 7:21 AM EDT	Areal Flood Advisory	MRX	3 hr
Jul 31, 10:33 AM EDT	Areal Flood Warning	MRX	3 hr
Aug 1, 3:04 PM EDT	Flood Watch	MRX	12 hr
Aug 4, 4:29 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 4, 6:45 PM EDT	Mesoscale Discussion	SPC	90 min
Aug 4, 8:14 PM EDT	Areal Flood Advisory	MRX	3 hr
Aug 11, 1:03 PM EDT	Mesoscale Discussion	SPC	87 min
Aug 15, 5:58 PM EDT	Areal Flood Advisory	MRX	2 hr
Aug 19, 9:26 PM EDT	Areal Flood Advisory	MRX	2 hr
Aug 27, 5:00 PM EDT	Areal Flood Advisory	MRX	60 min
Aug 27, 6:01 PM EDT	Areal Flood Advisory	MRX	119 min
Sep 9, 12:39 PM EDT	Mesoscale Discussion	SPC	96 min
Sep 9, 12:39 PM EDT	Mesoscale Discussion	SPC	96 min
Sep 17, 6:41 PM EDT	Areal Flood Advisory	MRX	109 min
Sep 17, 7:05 PM EDT	Flash Flood Warning	MRX	3 hr
Sep 18, 3:42 PM EDT	Areal Flood Advisory	MRX	3 hr
Sep 20, 2:28 PM EDT	Flood Watch	MRX	37 hr
Sep 21, 2:15 AM EDT	Areal Flood Advisory	MRX	8 hr
Sep 21, 9:03 AM EDT	Areal Flood Warning	MRX	12 hr
Sep 25, 5:24 AM EDT	Flash Flood Watch	MRX	40 hr
Sep 26, 11:36 AM EDT	Areal Flood Advisory	MRX	3 hr
Sep 26, 12:23 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 26, 12:25 PM EDT	Areal Flood Warning	MRX	6 hr
Oct 8, 3:19 PM EDT	Wind Advisory	MRX	30 hr
Oct 9, 4:27 PM EDT	Tornado Watch	SPC	6 hr
Oct 9, 4:45 PM EDT	Severe Thunderstorm Warning	MRX	60 min
Oct 9, 5:21 PM EDT	Severe Thunderstorm Warning	MRX	19 min
Oct 9, 6:58 PM EDT	Severe Thunderstorm Warning	MRX	62 min
Oct 9, 7:10 PM EDT	Tornado Warning	MRX	65 min
Oct 9, 7:13 PM EDT	Mesoscale Discussion	SPC	62 min
Oct 9, 7:30 PM EDT	Areal Flood Advisory	MRX	3 hr
Oct 9, 7:41 PM EDT	Severe Thunderstorm Warning	MRX	64 min
Oct 9, 7:51 PM EDT	Tornado Warning	MRX	54 min
Oct 9, 8:36 PM EDT	Tornado Warning	MRX	39 min
Oct 9, 9:11 PM EDT	Mesoscale Discussion	SPC	64 min
Oct 9, 9:12 PM EDT	Severe Thunderstorm Warning	MRX	33 min
Oct 17, 3:16 PM EDT	Frost Advisory	MRX	19 hr
Oct 17, 3:16 PM EDT	Freeze Warning	MRX	19 hr
Oct 17, 8:59 PM EDT	Freeze Watch	MRX	13 hr
Oct 18, 10:00 AM EDT	Freeze Warning	MRX	23 hr
Oct 19, 2:50 PM EDT	Freeze Warning	MRX	18 hr
Oct 22, 5:23 PM EDT	High Wind Warning	MRX	21 hr
Oct 22, 5:23 PM EDT	Wind Advisory	MRX	28 hr
Oct 24, 2:12 PM EDT	Frost Advisory	MRX	19 hr
Nov 1, 2:45 PM EST	Frost Advisory	MRX	18 hr
Nov 3, 2:45 PM EST	Frost Advisory	MRX	19 hr
Nov 5, 3:15 AM EST	Frost Advisory	MRX	30 hr
Nov 6, 2:51 PM EST	Frost Advisory	MRX	17 hr
Nov 10, 4:39 AM EST	Flash Flood Watch	MRX	32 hr
Nov 10, 11:18 AM EST	Areal Flood Advisory	MRX	3 hr
Nov 11, 12:41 AM EST	Areal Flood Advisory	MRX	3 hr
Nov 11, 2:53 AM EST	Wind Advisory	MRX	18 hr
Nov 30, 3:18 PM EST	High Wind Watch	MRX	24 hr
Dec 1, 3:10 PM EST	High Wind Warning	MRX	36 hr
Dec 4, 3:00 PM EST	Winter Weather Advisory	MRX	24 hr
Dec 5, 12:18 AM EST	Mesoscale Discussion	SPC	6 hr
Dec 7, 3:23 PM EST	High Wind Watch	MRX	13 hr
Dec 8, 3:57 AM EST	High Wind Warning	MRX	39 hr
Dec 8, 3:57 AM EST	Wind Advisory	MRX	39 hr
Dec 9, 12:07 AM EST	Areal Flood Advisory	MRX	3 hr
Dec 9, 2:14 AM EST	Flash Flood Warning	MRX	2 hr
Dec 9, 8:34 AM EST	Areal Flood Warning	MRX	3 hr
Dec 13, 9:07 PM EST	Dense Fog Advisory	MRX	13 hr
Dec 17, 3:18 PM EST	Winter Weather Advisory	MRX	37 hr
Dec 23, 3:20 AM EST	High Wind Watch	MRX	12 hr
Dec 23, 3:39 PM EST	High Wind Warning	MRX	44 hr
Dec 25, 2:37 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	44
Tornado Warning	7
Severe Thunderstorm Watch	10
Tornado Watch	7
Mesoscale Discussion	39
Flooding
Areal Flood Warning	6
Flash Flood Warning	5
Flash Flood Watch	3
Flood Watch	6
Areal Flood Advisory	27
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Freezing Rain Advisory	1
Winter Weather Advisory	6
Cold
Freeze Warning	6
Freeze Watch	2
Frost Advisory	7
Wind Chill Advisory	1
Wind and dust
High Wind Warning	6
High Wind Watch	4
Wind Advisory	13
Fog and smoke
Dense Fog Advisory	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

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.