Alert archive / Tennessee / Coffee County

Weather alerts in Coffee County, Tennessee, 2008

101 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Coffee County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts
101
Warnings
20
Watches
19
Advisories
31
Busiest month
April17 alerts
Busiest day
April 11, 20087 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 2 tornado warnings covering Coffee County in 2008 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 22 minutes after it went out.

Coffee County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings2150%1100%22 min
Severe thunderstorm warnings12558%757%13 min
Flash flood warnings00

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Nashville, TN: tornado warnings591869%3992%17 min
NWS Nashville, TN: severe thunderstorm warnings1835272%15249%11 min
NWS Nashville, TN: flash flood warnings5180%250%18 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 1, 5:41 AM CSTLake Wind AdvisoryOHX15 hr
Jan 8, 4:00 AM CSTLake Wind AdvisoryOHX20 hr
Jan 8, 5:51 PM CSTMesoscale DiscussionSPC54 min
Jan 8, 6:36 PM CSTTornado WatchSPC6 hr
Jan 8, 9:32 PM CSTMesoscale DiscussionSPC58 min
Jan 10, 11:33 AM CSTTornado Watch PDSSPC9 hr
Jan 10, 3:05 PM CSTMesoscale DiscussionSPC115 min
Jan 10, 3:42 PM CSTMesoscale DiscussionSPC93 min
Jan 10, 5:25 PM CSTMesoscale DiscussionSPC95 min
Jan 16, 3:19 PM CSTWinter Weather AdvisoryOHX12 hr
Jan 21, 3:28 PM CSTWinter Weather AdvisoryOHX11 hr
Jan 25, 3:10 PM CSTWinter Weather AdvisoryOHX19 hr
Jan 29, 3:53 AM CSTWind AdvisoryOHX15 hr
Jan 29, 5:53 PM CSTHigh Wind WarningOHX4 hr
Jan 29, 7:12 PM CSTSevere Thunderstorm WatchSPC5 hr
Jan 29, 9:16 PM CSTWind AdvisoryOHX6 hr
Jan 31, 10:11 PM CSTWind AdvisoryOHX4 hr
Feb 5, 9:39 PM CSTMesoscale DiscussionSPC96 min
Feb 6, 2:41 AM CSTMesoscale DiscussionSPC2 hr
Feb 6, 3:38 AM CSTSevere Thunderstorm WarningOHX37 min
Feb 6, 4:06 AM CSTTornado WatchSPC6 hr
Feb 6, 11:59 AM CSTLake Wind AdvisoryOHX6 hr
Feb 16, 4:13 PM CSTLake Wind AdvisoryOHX9 hr
Feb 17, 12:53 AM CSTWind AdvisoryOHX23 hr
Feb 26, 4:08 AM CSTSnow AdvisoryOHX34 hr
Feb 26, 4:13 AM CSTLake Wind AdvisoryOHX14 hr
Mar 3, 4:17 AM CSTLake Wind AdvisoryOHX23 hr
Mar 4, 1:09 AM CSTMesoscale DiscussionSPC66 min
Mar 5, 3:54 PM CSTWinter Storm WatchOHX44 hr
Mar 7, 3:00 AM CSTWinter Storm WarningOHX33 hr
Mar 15, 12:39 AM CDTMesoscale DiscussionSPC66 min
Mar 15, 9:26 AM CDTSevere Thunderstorm WarningOHX34 min
Mar 18, 8:56 AM CDTWind AdvisoryOHX27 hr
Mar 19, 1:32 PM CDTMesoscale DiscussionSPC58 min
Mar 19, 2:03 PM CDTTornado WatchSPC5 hr
Apr 2, 3:34 PM CDTFlood WatchOHX46 hr
Apr 4, 2:46 AM CDTSevere Thunderstorm WatchSPC8 hr
Apr 4, 5:16 AM CDTMesoscale DiscussionSPC89 min
Apr 4, 7:55 AM CDTMesoscale DiscussionSPC2 hr
Apr 4, 9:53 AM CDTAreal Flood AdvisoryOHX116 days
Apr 5, 2:51 PM CDTDense Fog AdvisoryOHX18 hr
Apr 9, 3:31 PM CDTWind AdvisoryOHX32 hr
Apr 11, 2:15 AM CDTMesoscale DiscussionSPC2 hr
Apr 11, 10:15 AM CDTTornado WatchSPC5 hr
Apr 11, 12:12 PM CDTAreal Flood AdvisoryOHX109 days
Apr 11, 1:13 PM CDTTornado WarningOHX32 min
Apr 11, 1:15 PM CDTMesoscale DiscussionSPC2 hr
Apr 11, 2:21 PM CDTSevere Thunderstorm WarningOHX24 min
Apr 11, 2:35 PM CDTTornado WarningOHX14 min
Apr 13, 3:00 PM CDTFreeze WatchOHX24 hr
Apr 14, 2:45 PM CDTFreeze WarningOHX17 hr
Apr 29, 3:22 PM CDTFrost AdvisoryOHX16 hr
May 2, 4:43 PM CDTTornado WatchSPC7 hr
May 2, 7:09 PM CDTMesoscale DiscussionSPC96 min
May 9, 3:29 PM CDTMesoscale DiscussionSPC2 hr
May 9, 6:18 PM CDTMesoscale DiscussionSPC57 min
May 9, 6:57 PM CDTSevere Thunderstorm WarningOHX33 min
May 9, 8:21 PM CDTSevere Thunderstorm WarningOHX20 min
May 10, 4:05 AM CDTMesoscale DiscussionSPC115 min
May 10, 7:08 PM CDTTornado WatchSPC7 hr
May 11, 12:15 AM CDTSevere Thunderstorm WarningOHX15 min
May 11, 3:52 AM CDTWind AdvisoryOHX18 hr
May 26, 3:45 PM CDTSevere Thunderstorm WarningOHX30 min
May 31, 5:19 PM CDTMesoscale DiscussionSPC56 min
Jun 1, 1:20 AM CDTMesoscale DiscussionSPC115 min
Jun 1, 1:36 AM CDTSevere Thunderstorm WatchSPC7 hr
Jun 1, 4:22 AM CDTMesoscale DiscussionSPC113 min
Jun 9, 7:43 PM CDTSevere Thunderstorm WarningOHX32 min
Jun 15, 3:34 AM CDTDense Fog AdvisoryOHX4 hr
Jun 21, 2:14 PM CDTSevere Thunderstorm WarningOHX22 min
Jun 21, 2:31 PM CDTSevere Thunderstorm WarningOHX29 min
Jun 23, 2:44 PM CDTMesoscale DiscussionSPC91 min
Jul 4, 12:29 PM CDTMesoscale DiscussionSPC2 hr
Jul 8, 12:04 PM CDTMesoscale DiscussionSPC56 min
Jul 9, 11:41 AM CDTMesoscale DiscussionSPC2 hr
Jul 21, 5:28 PM CDTMesoscale DiscussionSPC92 min
Jul 22, 11:55 AM CDTMesoscale DiscussionSPC3 hr
Jul 22, 12:34 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 22, 12:57 PM CDTSevere Thunderstorm WarningOHX48 min
Jul 22, 1:19 PM CDTSevere Thunderstorm WarningOHX26 min
Jul 22, 3:02 PM CDTMesoscale DiscussionSPC118 min
Jul 28, 1:44 PM CDTMesoscale DiscussionSPC2 hr
Jul 30, 2:57 PM CDTMesoscale DiscussionSPC93 min
Aug 25, 12:54 PM CDTFlash Flood WatchOHX26 hr
Sep 7, 1:03 AM CDTDense Fog AdvisoryOHX6 hr
Sep 13, 3:50 PM CDTWind AdvisoryOHX24 hr
Sep 14, 9:21 AM CDTMesoscale DiscussionSPC84 min
Oct 19, 3:08 PM CDTFrost AdvisoryOHX17 hr
Oct 25, 3:23 PM CDTFreeze WatchOHX46 hr
Oct 26, 3:01 PM CDTFreeze WatchOHX22 hr
Oct 27, 12:24 PM CDTFreeze WarningOHX21 hr
Oct 27, 12:24 PM CDTFreeze WarningOHX45 hr
Oct 28, 3:30 PM CDTFreeze WarningOHX42 hr
Dec 9, 9:20 PM CSTFlood WatchOHX9 hr
Dec 10, 3:38 PM CSTFlood WatchOHX21 hr
Dec 11, 3:55 PM CSTWinter Weather AdvisoryOHX11 hr
Dec 14, 4:58 AM CSTWind AdvisoryOHX13 hr
Dec 18, 12:12 AM CSTDense Fog AdvisoryOHX8 hr
Dec 18, 5:33 PM CSTDense Fog AdvisoryOHX10 hr
Dec 24, 3:35 AM CSTWind AdvisoryOHX12 hr
Dec 27, 3:13 AM CSTWind AdvisoryOHX21 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20072009

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.