Alert archive / Tennessee / Greene County

Weather alerts in Greene County, Tennessee, 2009

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

Greene County and its neighbors

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

Alerts: 171
Warnings: 51
Watches: 30
Advisories: 59
Busiest month: June33 alerts
Busiest day: June 17, 200914 alerts

Over time

By month

Warning verification

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

2 of 3 tornado warnings covering Greene County in 2009 had a tornado report inside them.

Greene County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	2	33%	0
Severe thunderstorm warnings	26	21	19%	11	73%	22 min
Flash flood warnings	2	2	0%	2	100%	28 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 2, 7:11 AM EST	Winter Weather Advisory	MRX	5 hr
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, 5:55 PM EST	Areal Flood Warning	MRX	16 hr
Jan 7, 3:05 PM EST	Winter Storm Warning	MRX	21 hr
Jan 7, 3:05 PM EST	Winter Weather Advisory	MRX	21 hr
Jan 10, 9:39 AM EST	Wind Advisory	MRX	12 hr
Jan 10, 6:17 PM EST	Areal Flood Advisory	MRX	3 hr
Jan 15, 3:18 AM EST	Wind Chill Advisory	MRX	33 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
Jan 27, 2:57 PM EST	Wind Advisory	MRX	22 hr
Feb 2, 10:38 AM EST	Winter Weather Advisory	MRX	5 hr
Feb 2, 3:30 PM EST	Winter Storm Watch	MRX	19 hr
Feb 2, 3:30 PM EST	Winter Weather Advisory	MRX	3 hr
Feb 3, 4:28 AM EST	Winter Weather Advisory	MRX	47 hr
Feb 3, 10:10 AM EST	Winter Storm Warning	MRX	41 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, 1:35 PM EST	Mesoscale Discussion	SPC	85 min
Feb 11, 1:59 PM EST	Tornado Watch	SPC	7 hr
Feb 11, 4:34 PM EST	Mesoscale Discussion	SPC	86 min
Feb 11, 4:53 PM EST	Severe Thunderstorm Warning	MRX	57 min
Feb 17, 3:45 PM EST	Wind Advisory	MRX	26 hr
Feb 18, 3:46 AM EST	High Wind Warning	MRX	14 hr
Feb 18, 4:06 PM EST	Severe Thunderstorm Warning	MRX	39 min
Feb 18, 4:36 PM EST	Severe Thunderstorm Warning	MRX	39 min
Feb 21, 1:04 PM EST	Winter Weather Advisory	MRX	21 hr
Feb 26, 3:15 PM EST	Wind Advisory	MRX	19 hr
Feb 28, 3:07 PM EST	Winter Weather Advisory	MRX	28 hr
Mar 1, 6:53 PM EST	Winter Weather Advisory	MRX	4 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, 11:00 PM EDT	Mesoscale Discussion	SPC	60 min
Apr 2, 11:35 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
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 5, 8:53 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 6, 12:08 AM EDT	Mesoscale Discussion	SPC	67 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, 2:51 PM EDT	Tornado Watch	SPC	6 hr
Apr 10, 6:03 PM EDT	Severe Thunderstorm Warning	MRX	34 min
Apr 10, 7:53 PM EDT	Mesoscale Discussion	SPC	67 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 5, 3:29 PM EDT	Flood Watch	MRX	31 hr
May 8, 6:03 PM EDT	Mesoscale Discussion	SPC	87 min
May 8, 6:32 PM EDT	Tornado Watch	SPC	7 hr
May 8, 7:26 PM EDT	Tornado Warning	MRX	64 min
May 8, 8:09 PM EDT	Tornado Warning	MRX	51 min
May 8, 8:30 PM EDT	Mesoscale Discussion	SPC	90 min
May 15, 1:57 PM EDT	Mesoscale Discussion	SPC	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 28, 2:21 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
May 28, 4:54 PM EDT	Mesoscale Discussion	SPC	66 min
May 28, 7:34 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 8, 3:24 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 11, 12:18 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 11, 2:55 PM EDT	Mesoscale Discussion	SPC	65 min
Jun 11, 2:57 PM EDT	Severe Thunderstorm Warning	MRX	63 min
Jun 11, 3:04 PM EDT	Severe Thunderstorm Warning	MRX	26 min
Jun 11, 8:47 PM EDT	Mesoscale Discussion	SPC	58 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 16, 6:31 PM EDT	Severe Thunderstorm Warning	MRX	59 min
Jun 16, 7:15 PM EDT	Severe Thunderstorm Warning	MRX	60 min
Jun 16, 7:58 PM EDT	Tornado Warning	MRX	47 min
Jun 16, 7:59 PM EDT	Severe Thunderstorm Warning	MRX	61 min
Jun 16, 8:02 PM EDT	Mesoscale Discussion	SPC	58 min
Jun 17, 5:49 AM EDT	Severe Thunderstorm Warning	MRX	56 min
Jun 17, 6:21 AM EDT	Severe Thunderstorm Warning	MRX	24 min
Jun 17, 6:33 AM EDT	Severe Thunderstorm Warning	MRX	42 min
Jun 17, 6:38 AM EDT	Areal Flood Advisory	MRX	3 hr
Jun 17, 7:13 AM EDT	Severe Thunderstorm Warning	MRX	47 min
Jun 17, 7:45 AM EDT	Flash Flood Warning	MRX	82 min
Jun 17, 10:01 AM EDT	Flash Flood Watch	MRX	13 hr
Jun 17, 12:54 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 17, 2:06 PM EDT	Severe Thunderstorm Warning	MRX	54 min
Jun 17, 2:42 PM EDT	Severe Thunderstorm Warning	MRX	63 min
Jun 17, 3:17 PM EDT	Mesoscale Discussion	SPC	28 min
Jun 17, 4:07 PM EDT	Mesoscale Discussion	SPC	23 min
Jun 17, 7:22 PM EDT	Mesoscale Discussion	SPC	23 min
Jun 18, 10:39 AM EDT	Severe Thunderstorm Watch PDS	SPC	7 hr
Jun 18, 2:45 PM EDT	Severe Thunderstorm Warning	MRX	60 min
Jun 18, 3:14 PM EDT	Severe Thunderstorm Warning	MRX	45 min
Jun 18, 4:25 PM EDT	Mesoscale Discussion	SPC	65 min
Jun 21, 2:00 PM EDT	Mesoscale Discussion	SPC	90 min
Jun 28, 4:04 PM EDT	Mesoscale Discussion	SPC	56 min
Jul 9, 5:06 PM EDT	Areal Flood Advisory	MRX	3 hr
Jul 9, 5:10 PM EDT	Severe Thunderstorm Warning	MRX	65 min
Jul 9, 6:35 PM EDT	Severe Thunderstorm Warning	MRX	55 min
Jul 9, 6:57 PM EDT	Areal Flood Advisory	MRX	2 hr
Jul 20, 6:20 PM EDT	Mesoscale Discussion	SPC	85 min
Jul 20, 8:09 PM EDT	Severe Thunderstorm Warning	MRX	51 min
Jul 20, 8:32 PM EDT	Areal Flood Advisory	MRX	3 hr
Jul 20, 8:50 PM EDT	Flash Flood Warning	MRX	115 min
Jul 20, 9:11 PM EDT	Severe Thunderstorm Warning	MRX	18 min
Jul 30, 3:14 PM EDT	Flood Watch	MRX	24 hr
Jul 31, 7:21 AM EDT	Areal Flood Advisory	MRX	3 hr
Jul 31, 10:42 AM EDT	Areal Flood Advisory	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, 5:15 PM EDT	Severe Thunderstorm Warning	MRX	60 min
Aug 4, 5:22 PM EDT	Areal Flood Advisory	MRX	3 hr
Aug 4, 6:04 PM EDT	Severe Thunderstorm Warning	MRX	56 min
Aug 4, 6:45 PM EDT	Mesoscale Discussion	SPC	90 min
Aug 11, 12:15 PM EDT	Areal Flood Advisory	MRX	3 hr
Aug 11, 12:34 PM EDT	Severe Thunderstorm Warning	MRX	56 min
Aug 11, 1:03 PM EDT	Mesoscale Discussion	SPC	87 min
Aug 20, 7:19 PM EDT	Areal Flood Advisory	MRX	116 min
Aug 22, 4:05 AM EDT	Areal Flood Advisory	MRX	115 min
Aug 27, 6:22 PM EDT	Areal Flood Advisory	MRX	53 min
Aug 27, 8:13 PM EDT	Areal Flood Advisory	MRX	62 min
Sep 9, 3:01 AM EDT	Areal Flood Advisory	MRX	119 min
Sep 9, 9:19 AM EDT	Severe Thunderstorm Warning	MRX	41 min
Sep 9, 11:02 AM EDT	Severe Thunderstorm Warning	MRX	58 min
Sep 25, 5:24 AM EDT	Flash Flood Watch	MRX	40 hr
Sep 26, 11:33 AM EDT	Areal Flood Advisory	MRX	3 hr
Sep 26, 12:23 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 26, 1:32 PM EDT	Areal Flood Warning	MRX	6 hr
Sep 26, 7:16 PM EDT	Areal Flood Warning	MRX	2 hr
Sep 28, 1:31 PM EDT	Wind Advisory	MRX	8 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, 7:13 PM EDT	Mesoscale Discussion	SPC	62 min
Oct 9, 9:11 PM EDT	Mesoscale Discussion	SPC	64 min
Oct 15, 8:03 AM EDT	Areal Flood Advisory	MRX	5 hr
Oct 16, 3:52 AM EDT	Freeze Warning	MRX	30 hr
Oct 17, 10:30 AM EDT	Winter Weather Advisory	MRX	17 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 30, 3:02 PM EDT	Wind Advisory	MRX	19 hr
Nov 10, 4:39 AM EST	Flash Flood Watch	MRX	32 hr
Nov 10, 1:03 PM EST	Areal Flood Advisory	MRX	6 hr
Nov 10, 9:41 PM EST	Areal Flood Advisory	MRX	6 hr
Nov 11, 2:53 AM EST	Wind Advisory	MRX	18 hr
Nov 11, 3:55 AM EST	Areal Flood Advisory	MRX	3 hr
Nov 26, 1:51 PM EST	Wind Advisory	MRX	24 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 3, 3:10 PM EST	Winter Storm Watch	MRX	24 hr
Dec 4, 3:00 PM EST	Winter Weather Advisory	MRX	24 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 10, 4:20 AM EST	Wind Advisory	MRX	11 hr
Dec 13, 9:07 PM EST	Dense Fog Advisory	MRX	13 hr
Dec 17, 2:47 AM EST	Winter Storm Watch	MRX	26 hr
Dec 18, 4:18 AM EST	Winter Storm Warning	MRX	44 hr
Dec 18, 1:32 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 18, 5:16 PM EST	Areal Flood Advisory	MRX	119 min
Dec 19, 4:07 AM EST	Winter Weather Advisory	MRX	20 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 23, 3:39 PM EST	Wind Advisory	MRX	48 hr
Dec 25, 7:08 AM EST	Areal Flood Advisory	MRX	3 hr
Dec 30, 2:12 PM EST	Winter Weather Advisory	MRX	19 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	8
Tornado Watch	4
Mesoscale Discussion	31
Flooding
Areal Flood Warning	3
Flash Flood Warning	2
Flash Flood Watch	4
Flood Watch	4
Areal Flood Advisory	21
Winter
Winter Storm Warning	4
Winter Storm Watch	4
Freezing Rain Advisory	1
Winter Weather Advisory	13
Cold
Freeze Warning	6
Freeze Watch	2
Frost Advisory	1
Wind Chill Advisory	2
Wind and dust
High Wind Warning	7
High Wind Watch	4
Wind Advisory	19
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.