Alert archive / Tennessee / Sullivan County

Weather alerts in Sullivan County, Tennessee, 2008

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

Sullivan County and its neighbors

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

Alerts
83
Warnings
25
Watches
6
Advisories
35
Busiest month
July22 alerts
Busiest day
July 9, 20085 alerts

Over time

By month

Warning verification

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

Sullivan County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings221723%12100%18 min
Flash flood warnings00

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Morristown, TN: tornado warnings70100%30%
NWS Morristown, TN: severe thunderstorm warnings29823023%40087%21 min
NWS Morristown, TN: flash flood warnings5260%825%48 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.

IssuedProductOfficeLasted
Jan 1, 3:44 PM ESTSnow AdvisoryMRX24 hr
Jan 8, 7:26 PM ESTLake Wind AdvisoryMRX8 hr
Jan 10, 8:24 PM ESTAreal Flood AdvisoryMRX3 hr
Jan 10, 10:36 PM ESTAreal Flood AdvisoryMRX3 hr
Jan 11, 1:18 AM ESTAreal Flood AdvisoryMRX3 hr
Jan 16, 4:13 AM ESTWinter Weather AdvisoryMRX30 hr
Jan 16, 3:23 PM ESTWinter Storm WarningMRX19 hr
Jan 17, 12:58 AM ESTMesoscale DiscussionSPC6 hr
Jan 17, 7:51 AM ESTMesoscale DiscussionSPC4 hr
Jan 22, 7:41 AM ESTWinter Weather AdvisoryMRX2 hr
Jan 22, 10:27 AM ESTWinter Weather AdvisoryMRX4 hr
Jan 29, 3:27 PM ESTWind AdvisoryMRX16 hr
Jan 30, 12:35 AM ESTSevere Thunderstorm WarningMRX40 min
Feb 1, 11:26 AM ESTLake Wind AdvisoryMRX8 hr
Feb 5, 3:10 AM ESTDense Fog AdvisoryMRX6 hr
Feb 5, 3:10 AM ESTWind AdvisoryMRX40 hr
Feb 6, 8:49 AM ESTMesoscale DiscussionSPC116 min
Feb 6, 1:45 PM ESTSevere Thunderstorm WarningMRX45 min
Feb 9, 3:00 PM ESTLake Wind AdvisoryMRX29 hr
Feb 17, 2:57 AM ESTLake Wind AdvisoryMRX16 hr
Feb 19, 2:41 AM ESTLake Wind AdvisoryMRX15 hr
Feb 20, 7:18 AM ESTLake Wind AdvisoryMRX11 hr
Feb 23, 2:53 AM ESTDense Fog AdvisoryMRX7 hr
Feb 26, 4:10 AM ESTSnow AdvisoryMRX42 hr
Mar 3, 3:22 PM ESTWind AdvisoryMRX28 hr
Mar 4, 4:16 PM ESTAreal Flood AdvisoryMRX3 hr
Mar 4, 4:31 PM ESTTornado WatchSPC8 hr
Mar 4, 5:20 PM ESTSevere Thunderstorm WarningMRX25 min
Mar 18, 3:39 AM EDTWind AdvisoryMRX38 hr
Mar 19, 4:54 PM EDTMesoscale DiscussionSPC66 min
Mar 19, 5:43 PM EDTSevere Thunderstorm WatchSPC4 hr
Mar 19, 7:19 PM EDTMesoscale DiscussionSPC86 min
Apr 19, 3:01 PM EDTMesoscale DiscussionSPC119 min
Apr 29, 2:58 PM EDTFreeze WarningMRX18 hr
May 8, 2:22 PM EDTMesoscale DiscussionSPC83 min
May 11, 4:48 AM EDTLake Wind AdvisoryMRX15 hr
May 11, 9:34 AM EDTMesoscale DiscussionSPC26 min
May 11, 9:52 AM EDTTornado WatchSPC6 hr
May 11, 11:10 AM EDTMesoscale DiscussionSPC95 min
May 19, 3:12 PM EDTLake Wind AdvisoryMRX25 hr
Jun 1, 6:58 PM EDTMesoscale DiscussionSPC92 min
Jun 2, 4:21 AM EDTDense Fog AdvisoryMRX6 hr
Jun 3, 6:44 AM EDTMesoscale DiscussionSPC3 hr
Jun 9, 5:53 PM EDTSevere Thunderstorm WarningMRX52 min
Jun 9, 6:44 PM EDTSevere Thunderstorm WarningMRX46 min
Jun 10, 6:42 PM EDTSevere Thunderstorm WarningMRX33 min
Jun 10, 7:14 PM EDTSevere Thunderstorm WarningMRX61 min
Jun 11, 4:18 PM EDTSevere Thunderstorm WarningMRX32 min
Jun 14, 3:39 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 4, 1:29 PM EDTMesoscale DiscussionSPC2 hr
Jul 4, 4:51 PM EDTSevere Thunderstorm WarningMRX39 min
Jul 4, 5:26 PM EDTSevere Thunderstorm WarningMRX34 min
Jul 6, 1:44 PM EDTMesoscale DiscussionSPC61 min
Jul 6, 7:50 PM EDTSevere Thunderstorm WarningMRX41 min
Jul 8, 1:04 PM EDTMesoscale DiscussionSPC56 min
Jul 9, 12:41 PM EDTMesoscale DiscussionSPC2 hr
Jul 9, 12:55 PM EDTSevere Thunderstorm WarningMRX50 min
Jul 9, 1:45 PM EDTSevere Thunderstorm WarningMRX30 min
Jul 9, 2:04 PM EDTSevere Thunderstorm WarningMRX26 min
Jul 9, 2:18 PM EDTSevere Thunderstorm WarningMRX27 min
Jul 14, 6:18 AM EDTDense Fog AdvisoryMRX4 hr
Jul 21, 3:18 PM EDTSevere Thunderstorm WarningMRX42 min
Jul 21, 3:23 PM EDTSevere Thunderstorm WarningMRX52 min
Jul 21, 3:44 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 21, 4:18 PM EDTSevere Thunderstorm WarningMRX57 min
Jul 22, 3:20 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 22, 7:24 PM EDTSevere Thunderstorm WarningMRX66 min
Jul 22, 8:27 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 23, 1:28 PM EDTMesoscale DiscussionSPC62 min
Jul 28, 2:44 PM EDTMesoscale DiscussionSPC2 hr
Jul 28, 6:00 PM EDTAreal Flood AdvisoryMRX3 hr
Aug 2, 3:15 PM EDTSevere Thunderstorm WarningMRX60 min
Aug 2, 4:31 PM EDTSevere Thunderstorm WarningMRX44 min
Aug 7, 3:36 PM EDTSevere Thunderstorm WarningMRX54 min
Aug 13, 6:43 PM EDTAreal Flood AdvisoryMRX3 hr
Oct 19, 3:39 AM EDTFreeze WarningMRX29 hr
Nov 14, 2:45 AM ESTDense Fog AdvisoryMRX7 hr
Nov 20, 9:42 PM ESTWinter Weather AdvisoryMRX17 hr
Nov 30, 3:16 PM ESTWinter Weather AdvisoryMRX33 hr
Dec 6, 3:22 PM ESTWinter Weather AdvisoryMRX11 hr
Dec 10, 1:30 PM ESTFlood WatchMRX24 hr
Dec 11, 2:47 PM ESTWinter Weather AdvisoryMRX15 hr
Dec 23, 3:11 PM ESTWind AdvisoryMRX31 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.