Alert archive / Tennessee / Roane County

Weather alerts in Roane County, Tennessee, 2024

97 weather alerts in 2024, 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 2024. Tap one for its archive.

Alerts
97
Warnings
19
Watches
15
Advisories
30
Busiest month
May39 alerts
Busiest day
May 8, 20249 alerts

Over time

By month

Warning verification

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

0 of 1 tornado warnings covering Roane County in 2024 had a tornado report inside them.

Roane County, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings121017%475%9 min
Flash flood warnings4250%250%99 min

Each office's whole area, 2024

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Morristown, TN: tornado warnings18383%4100%11 min
NWS Morristown, TN: severe thunderstorm warnings18914026%22986%22 min
NWS Morristown, TN: flash flood warnings613543%9276%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.

IssuedProductOfficeLasted
Jan 8, 3:45 AM ESTWind AdvisoryMRX57 hr
Jan 9, 10:39 AM ESTAreal Flood AdvisoryMRX5 hr
Jan 11, 3:21 AM ESTWind AdvisoryMRX60 hr
Jan 13, 3:39 AM ESTWinter Storm WatchMRX24 hr
Jan 14, 3:43 AM ESTWinter Storm WarningMRX51 hr
Jan 15, 12:50 PM ESTMesoscale DiscussionSPC3 hr
Jan 16, 3:22 AM ESTWind Chill AdvisoryMRX33 hr
Jan 17, 3:18 PM ESTWinter Weather AdvisoryMRX64 hr
Jan 19, 3:39 AM ESTWind Chill AdvisoryMRX54 hr
Jan 23, 2:20 PM ESTFlood WatchMRX53 hr
Jan 25, 6:02 AM ESTDense Fog AdvisoryMRX3 hr
Jan 25, 10:07 AM ESTDense Fog AdvisoryMRX113 min
Jan 26, 3:16 PM ESTFlood WatchMRX23 hr
Feb 22, 11:32 PM ESTAreal Flood AdvisoryMRX3 hr
Feb 26, 3:00 PM ESTWind AdvisoryMRX52 hr
Feb 28, 10:48 AM ESTSpecial Weather StatementMRX42 min
Feb 28, 11:30 AM ESTSpecial Weather StatementMRX45 min
Feb 28, 11:53 AM ESTSevere Thunderstorm WarningMRX52 min
Mar 3, 1:48 AM ESTDense Fog AdvisoryMRX7 hr
Mar 24, 2:51 PM EDTWind AdvisoryMRX44 hr
Mar 28, 2:56 PM EDTFrost AdvisoryMRX18 hr
Apr 2, 3:49 PM EDTMesoscale DiscussionSPC116 min
Apr 2, 5:33 PM EDTMesoscale DiscussionSPC87 min
Apr 2, 6:07 PM EDTTornado WatchSPC7 hr
Apr 2, 11:36 PM EDTSpecial Weather StatementMRX24 min
Apr 6, 12:51 PM EDTFrost AdvisoryMRX20 hr
Apr 11, 5:33 PM EDTSpecial Weather StatementMRX57 min
May 1, 3:16 AM EDTDense Fog AdvisoryMRX7 hr
May 6, 1:41 PM EDTMesoscale DiscussionSPC2 hr
May 6, 5:53 PM EDTMesoscale DiscussionSPC97 min
May 8, 2:28 AM EDTFlood WatchMRX30 hr
May 8, 8:50 AM EDTMesoscale DiscussionSPC2 hr
May 8, 10:04 AM EDTSevere Thunderstorm WatchSPC6 hr
May 8, 10:56 AM EDTMesoscale DiscussionSPC94 min
May 8, 12:45 PM EDTAreal Flood AdvisoryMRX2 hr
May 8, 1:01 PM EDTFlash Flood WarningMRX119 min
May 8, 2:58 PM EDTAreal Flood AdvisoryMRX3 hr
May 8, 4:41 PM EDTMesoscale DiscussionSPC94 min
May 8, 5:14 PM EDTTornado WatchSPC7 hr
May 8, 8:42 PM EDTMesoscale DiscussionSPC2 hr
May 8, 9:51 PM EDTSevere Thunderstorm WarningMRX39 min
May 8, 10:11 PM EDTSevere Thunderstorm WarningMRX49 min
May 9, 4:30 AM EDTSpecial Weather StatementMRX60 min
May 9, 5:43 AM EDTAreal Flood AdvisoryMRX4 hr
May 18, 2:59 PM EDTSpecial Weather StatementMRX46 min
May 18, 3:10 PM EDTSpecial Weather StatementMRX50 min
May 18, 3:21 PM EDTFlash Flood WarningMRX4 hr
May 22, 8:05 PM EDTSevere Thunderstorm WarningMRX40 min
May 23, 12:53 PM EDTMesoscale DiscussionSPC2 hr
May 23, 1:44 PM EDTSevere Thunderstorm WatchSPC8 hr
May 23, 6:47 PM EDTSpecial Weather StatementMRX43 min
May 23, 7:41 PM EDTMesoscale DiscussionSPC94 min
May 25, 8:21 AM EDTAreal Flood AdvisoryMRX2 hr
May 26, 9:59 AM EDTTornado WatchSPC8 hr
May 26, 12:52 PM EDTMesoscale DiscussionSPC83 min
May 26, 1:46 PM EDTSevere Thunderstorm WatchSPC9 hr
May 26, 2:57 PM EDTMesoscale DiscussionSPC93 min
May 26, 3:45 PM EDTSevere Thunderstorm WarningMRX45 min
May 26, 4:40 PM EDTTornado WarningMRX23 min
May 26, 4:42 PM EDTMesoscale DiscussionSPC63 min
May 26, 4:57 PM EDTSevere Thunderstorm WarningMRX48 min
May 26, 5:18 PM EDTSevere Thunderstorm WarningMRX27 min
May 26, 10:43 PM EDTTornado WatchSPC7 hr
May 27, 2:57 AM EDTSevere Thunderstorm WarningMRX48 min
May 27, 3:14 AM EDTSpecial Weather StatementMRX46 min
May 27, 3:47 AM EDTMesoscale DiscussionSPC118 min
Jun 30, 2:16 PM EDTMesoscale DiscussionSPC119 min
Jul 4, 3:57 AM EDTHeat AdvisoryMRX16 hr
Jul 5, 8:56 AM EDTMesoscale DiscussionSPC3 hr
Jul 5, 11:31 AM EDTSpecial Weather StatementMRX59 min
Jul 5, 12:28 PM EDTSpecial Weather StatementMRX62 min
Jul 17, 5:39 PM EDTSpecial Weather StatementMRX36 min
Jul 28, 7:44 PM EDTAreal Flood AdvisoryMRX2 hr
Jul 30, 3:36 AM EDTFlood WatchMRX4 days
Jul 30, 2:18 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 30, 2:42 PM EDTSpecial Weather StatementMRX48 min
Jul 30, 2:54 PM EDTSevere Thunderstorm WarningMRX66 min
Jul 30, 3:23 PM EDTSevere Thunderstorm WarningMRX67 min
Jul 30, 4:01 PM EDTMesoscale DiscussionSPC119 min
Jul 30, 4:11 PM EDTFlash Flood WarningMRX4 hr
Aug 1, 2:56 AM EDTHeat AdvisoryMRX17 hr
Aug 16, 4:27 PM EDTSpecial Weather StatementMRX48 min
Aug 16, 4:47 PM EDTSevere Thunderstorm WarningMRX43 min
Sep 2, 12:32 AM EDTDense Fog AdvisoryMRX8 hr
Sep 23, 2:13 PM EDTMesoscale DiscussionSPC92 min
Sep 24, 2:55 PM EDTFlood WatchMRX71 hr
Sep 24, 6:47 PM EDTSevere Thunderstorm WarningMRX25 min
Sep 25, 1:38 PM EDTHigh Wind WatchMRX23 hr
Sep 25, 9:40 PM EDTHigh Wind WarningMRX55 hr
Sep 26, 11:52 PM EDTFlash Flood WarningMRX3 hr
Oct 2, 4:57 AM EDTDense Fog AdvisoryMRX4 hr
Oct 2, 10:05 PM EDTDense Fog AdvisoryMRX12 hr
Nov 6, 10:33 PM ESTDense Fog AdvisoryMRX6 hr
Dec 9, 7:11 PM ESTDense Fog AdvisoryMRX9 hr
Dec 18, 3:18 AM ESTDense Fog AdvisoryMRX6 hr
Dec 29, 2:24 AM ESTWind AdvisoryMRX17 hr
Dec 30, 2:37 PM ESTWind AdvisoryMRX28 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 archive20232025

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.