Alert archive / Tennessee / Roane County

Weather alerts in Roane County, Tennessee, 2026

97 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Roane County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts
97
Warnings
19
Watches
12
Advisories
38
Busiest month
August22 alerts
Busiest day
August 17, 20265 alerts

Over time

By month

Warning verification

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

Roane County, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings131115%3100%33 min
Flash flood warnings550%425%13 min

Each office's whole area, 2026

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Morristown, TN: tornado warnings10190%333%3 min
NWS Morristown, TN: severe thunderstorm warnings18214620%22689%22 min
NWS Morristown, TN: flash flood warnings815532%12884%70 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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 7, 1:25 AM ESTDense Fog AdvisoryMRX9 hr
Jan 21, 12:27 PM ESTWinter Storm WatchMRX45 hr
Jan 23, 9:54 AM ESTIce Storm WarningMRX48 hr
Jan 24, 1:17 PM ESTMesoscale DiscussionSPC5 hr
Jan 24, 6:45 PM ESTMesoscale DiscussionSPC5 hr
Jan 24, 11:49 PM ESTCold Weather AdvisoryMRX34 hr
Jan 25, 10:50 AM ESTAreal Flood AdvisoryMRX6 hr
Jan 25, 12:01 PM ESTCold Weather AdvisoryMRX48 hr
Jan 25, 1:54 PM ESTAreal Flood AdvisoryMRX3 hr
Jan 29, 12:50 PM ESTWinter Weather AdvisoryMRX54 hr
Jan 29, 1:00 PM ESTCold Weather AdvisoryMRX71 hr
Feb 4, 4:01 AM ESTDense Fog AdvisoryMRX8 hr
Feb 26, 4:52 AM ESTAreal Flood AdvisoryMRX4 hr
Mar 7, 2:44 PM ESTMesoscale DiscussionSPC2 hr
Mar 9, 3:05 AM EDTDense Fog AdvisoryMRX7 hr
Mar 11, 5:31 PM EDTMesoscale DiscussionSPC119 min
Mar 15, 2:17 PM EDTWind AdvisoryMRX18 hr
Mar 16, 12:41 AM EDTSevere Thunderstorm WatchSPC6 hr
Mar 16, 1:41 AM EDTSevere Thunderstorm WarningMRX64 min
Mar 16, 1:52 AM EDTSevere Thunderstorm WarningMRX53 min
Mar 16, 2:40 AM EDTSevere Thunderstorm WarningMRX65 min
Mar 21, 3:31 PM EDTMesoscale DiscussionSPC119 min
Apr 4, 6:11 PM EDTMesoscale DiscussionSPC2 hr
Apr 25, 5:13 PM EDTSpecial Weather StatementMRX32 min
Apr 26, 12:52 AM EDTDense Fog AdvisoryMRX9 hr
May 20, 1:34 PM EDTMesoscale DiscussionSPC116 min
May 23, 8:15 PM EDTSpecial Weather StatementMRX45 min
May 24, 12:57 PM EDTFlood WatchMRX13 hr
May 24, 4:33 PM EDTAreal Flood AdvisoryMRX3 hr
May 24, 7:08 PM EDTFlash Flood WarningMRX3 hr
May 25, 12:13 PM EDTFlood WatchMRX15 hr
May 29, 1:59 PM EDTFlood WatchMRX24 hr
May 30, 8:25 AM EDTAreal Flood AdvisoryMRX3 hr
Jun 7, 2:09 PM EDTFlood WatchMRX31 hr
Jun 22, 3:37 PM EDTMesoscale DiscussionSPC113 min
Jun 22, 11:52 PM EDTAreal Flood AdvisoryMRX3 hr
Jun 27, 9:44 AM EDTFlood WatchMRX28 hr
Jun 28, 4:03 AM EDTFlash Flood WarningMRX3 hr
Jun 28, 10:40 AM EDTSpecial Weather StatementMRX65 min
Jun 28, 11:19 AM EDTAreal Flood AdvisoryMRX3 hr
Jun 29, 1:34 PM EDTHeat AdvisoryMRX5 days
Jul 3, 12:54 PM EDTMesoscale DiscussionSPC2 hr
Jul 3, 6:11 PM EDTSevere Thunderstorm WarningMRX49 min
Jul 3, 6:26 PM EDTSevere Thunderstorm WarningMRX49 min
Jul 3, 6:54 PM EDTSevere Thunderstorm WarningMRX51 min
Jul 5, 12:43 PM EDTSevere Thunderstorm WarningMRX47 min
Jul 6, 7:39 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 7, 8:11 PM EDTSpecial Weather StatementMRX49 min
Jul 9, 11:44 AM EDTFlood WatchMRX4 days
Jul 13, 1:06 PM EDTAreal Flood AdvisoryMRX3 hr
Jul 17, 3:50 PM EDTFlash Flood WarningMRX97 min
Jul 17, 4:51 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 19, 1:54 PM EDTSpecial Weather StatementMRX36 min
Jul 19, 3:11 PM EDTMesoscale DiscussionSPC2 hr
Jul 19, 7:26 PM EDTAreal Flood AdvisoryMRX16 min
Jul 19, 7:42 PM EDTFlash Flood WarningMRX2 hr
Jul 21, 1:45 PM EDTFlood WatchMRX54 hr
Jul 22, 11:08 AM EDTAreal Flood AdvisoryMRX5 hr
Jul 22, 1:13 PM EDTAreal Flood AdvisoryMRX3 hr
Jul 22, 5:12 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 22, 5:37 PM EDTAreal Flood AdvisoryMRX3 hr
Aug 5, 7:40 PM EDTAreal Flood AdvisoryMRX3 hr
Aug 8, 3:11 PM EDTAreal Flood AdvisoryMRX3 hr
Aug 10, 4:11 AM EDTDense Fog AdvisoryMRX6 hr
Aug 11, 5:53 PM EDTMesoscale DiscussionSPC2 hr
Aug 11, 7:06 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 11, 8:12 PM EDTMesoscale DiscussionSPC2 hr
Aug 11, 11:34 PM EDTFlash Flood WarningMRX3 hr
Aug 12, 2:38 AM EDTFlood WatchMRX29 hr
Aug 14, 12:11 PM EDTHeat AdvisoryMRX3 days
Aug 15, 1:06 PM EDTSpecial Weather StatementMRX39 min
Aug 15, 1:25 PM EDTMesoscale DiscussionSPC3 hr
Aug 17, 1:49 PM EDTMesoscale DiscussionSPC116 min
Aug 17, 2:35 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 17, 4:13 PM EDTSevere Thunderstorm WarningMRX62 min
Aug 17, 4:33 PM EDTSevere Thunderstorm WarningMRX57 min
Aug 17, 5:54 PM EDTAreal Flood AdvisoryMRX3 hr
Aug 20, 7:07 AM EDTSpecial Weather StatementMRX38 min
Aug 20, 7:49 PM EDTSevere Thunderstorm WarningMRX56 min
Aug 20, 8:56 PM EDTSpecial Weather StatementMRX49 min
Aug 20, 10:00 PM EDTSevere Thunderstorm WarningMRX15 min
Aug 21, 7:13 PM EDTSevere Thunderstorm WarningMRX35 min
Aug 22, 7:37 PM EDTMesoscale DiscussionSPC83 min
Sep 2, 12:32 AM EDTHeat AdvisoryMRX4 days
Sep 2, 1:58 PM EDTHeat AdvisoryMRX3 days
Sep 5, 1:03 PM EDTSevere Thunderstorm WarningMRX57 min
Sep 5, 1:48 PM EDTSpecial Weather StatementMRX57 min
Sep 5, 4:10 PM EDTAreal Flood AdvisoryMRX3 hr
Sep 13, 3:38 AM EDTDense Fog AdvisoryMRX5 hr
Sep 18, 3:26 PM EDTSpecial Weather StatementMRX34 min
Sep 21, 7:49 AM EDTAreal Flood AdvisoryMRX3 hr
Sep 21, 2:49 PM EDTSpecial Weather StatementMRX41 min
Sep 22, 4:10 AM EDTAreal Flood AdvisoryMRX2 hr
Sep 22, 4:21 AM EDTSpecial Weather StatementMRX39 min
Sep 22, 6:07 AM EDTAreal Flood AdvisoryMRX53 min
Sep 22, 8:46 PM EDTSpecial Weather StatementMRX44 min
Sep 23, 7:17 PM EDTAreal Flood AdvisoryMRX118 min

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 archive2025

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.