Alert archive / Tennessee / Marion County

Weather alerts in Marion County, Tennessee, 2022

116 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Marion County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts
116
Warnings
29
Watches
12
Advisories
39
Busiest month
June17 alerts
Busiest day
January 2, 20226 alerts

Over time

By month

Warning verification

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

Marion County, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings12833%580%21 min
Flash flood warnings3167%0

Each office's whole area, 2022

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Morristown, TN: tornado warnings40100%0
NWS Morristown, TN: severe thunderstorm warnings18515019%24285%18 min
NWS Morristown, TN: flash flood warnings512747%6682%91 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, 2:31 AM CSTWind AdvisoryMRX20 hr
Jan 1, 12:38 PM CSTMesoscale DiscussionSPC97 min
Jan 1, 12:56 PM CSTTornado WatchSPC6 hr
Jan 1, 3:27 PM CSTMesoscale DiscussionSPC93 min
Jan 1, 5:53 PM CSTMesoscale DiscussionSPC67 min
Jan 1, 6:53 PM CSTTornado WatchSPC7 hr
Jan 1, 7:07 PM CSTSpecial Weather StatementMRX53 min
Jan 1, 8:55 PM CSTSevere Thunderstorm WarningMRX50 min
Jan 1, 11:49 PM CSTAreal Flood AdvisoryMRX4 hr
Jan 2, 3:03 AM CSTWinter Storm WarningMRX30 hr
Jan 2, 3:03 AM CSTWinter Weather AdvisoryMRX24 hr
Jan 2, 6:19 PM CSTMesoscale DiscussionSPC5 hr
Jan 5, 1:59 PM CSTWinter Weather AdvisoryMRX25 hr
Jan 13, 2:06 PM CSTWinter Storm WatchMRX48 hr
Jan 15, 3:29 AM CSTWinter Storm WarningMRX63 hr
Feb 2, 2:31 AM CSTFlood WatchMRX42 hr
Feb 3, 8:22 AM CSTRiver Flood WarningMRX36 hr
Feb 11, 1:20 PM CSTRed Flag WarningMRX5 hr
Feb 16, 2:01 PM CSTWind AdvisoryMRX34 hr
Feb 17, 6:06 PM CSTSpecial Weather StatementMRX54 min
Feb 21, 1:33 PM CSTFlood WatchMRX42 hr
Feb 22, 8:30 PM CSTSpecial Weather StatementMRX45 min
Feb 22, 8:46 PM CSTAreal Flood AdvisoryMRX9 hr
Feb 22, 9:15 PM CSTSpecial Weather StatementMRX45 min
Feb 22, 11:39 PM CSTAreal Flood AdvisoryMRX8 hr
Feb 23, 2:11 AM CSTRiver Flood WarningMRX27 hr
Feb 24, 5:01 AM CSTRiver Flood WarningMRX63 hr
Mar 6, 2:02 PM CSTWind AdvisoryMRX28 hr
Mar 10, 2:13 PM CSTWinter Storm WatchMRX13 hr
Mar 11, 2:54 AM CSTWinter Storm WarningMRX36 hr
Mar 11, 8:24 PM CSTMesoscale DiscussionSPC5 hr
Mar 22, 4:55 PM CDTMesoscale DiscussionSPC95 min
Mar 23, 12:16 PM CDTWind AdvisoryMRX7 hr
Mar 26, 2:15 PM CDTFreeze WarningMRX18 hr
Mar 27, 7:16 PM CDTFrost AdvisoryMRX7 hr
Mar 29, 9:30 AM CDTWind AdvisoryMRX44 hr
Mar 30, 9:42 PM CDTMesoscale DiscussionSPC93 min
Mar 30, 11:01 PM CDTSevere Thunderstorm WatchSPC5 hr
Mar 31, 12:30 AM CDTSpecial Weather StatementMRX45 min
Mar 31, 1:10 AM CDTSevere Thunderstorm Warning Considerable damage threatMRX33 min
Apr 6, 12:59 PM CDTMesoscale DiscussionSPC2 hr
Apr 6, 3:43 PM CDTMesoscale DiscussionSPC62 min
Apr 6, 3:59 PM CDTTornado WatchSPC5 hr
Apr 6, 4:23 PM CDTSpecial Weather StatementMRX52 min
Apr 6, 4:35 PM CDTSevere Thunderstorm WarningMRX40 min
Apr 6, 5:00 PM CDTSevere Thunderstorm WarningMRX45 min
Apr 8, 2:23 PM CDTFrost AdvisoryMRX12 hr
Apr 9, 2:02 PM CDTFrost AdvisoryMRX18 hr
Apr 13, 9:06 PM CDTSevere Thunderstorm WarningMRX54 min
Apr 18, 10:44 PM CDTFrost AdvisoryMRX10 hr
May 3, 6:58 PM CDTSpecial Weather StatementMRX47 min
May 3, 7:41 PM CDTSpecial Weather StatementMRX49 min
May 6, 12:36 PM CDTSpecial Weather StatementMRX39 min
May 6, 12:52 PM CDTSevere Thunderstorm WarningMRX38 min
May 6, 1:33 PM CDTSpecial Weather StatementMRX42 min
May 14, 4:04 PM CDTSpecial Weather StatementMRX41 min
May 21, 10:47 PM CDTSpecial Weather StatementMRX43 min
Jun 2, 4:47 PM CDTAreal Flood AdvisoryMRX3 hr
Jun 2, 4:57 PM CDTSpecial Weather StatementMRX48 min
Jun 6, 2:59 PM CDTSpecial Weather StatementMRX46 min
Jun 6, 3:08 PM CDTSevere Thunderstorm WarningMRX22 min
Jun 6, 3:30 PM CDTSevere Thunderstorm WarningMRX19 min
Jun 6, 3:56 PM CDTSpecial Weather StatementMRX49 min
Jun 6, 4:24 PM CDTSevere Thunderstorm WarningMRX51 min
Jun 7, 10:10 AM CDTAreal Flood AdvisoryMRX3 hr
Jun 7, 12:25 PM CDTAreal Flood AdvisoryMRX110 min
Jun 7, 3:34 PM CDTSpecial Weather StatementMRX41 min
Jun 13, 2:28 PM CDTHeat AdvisoryMRX29 hr
Jun 14, 2:26 PM CDTHeat AdvisoryMRX29 hr
Jun 15, 2:07 PM CDTHeat AdvisoryMRX29 hr
Jun 17, 8:48 AM CDTMesoscale DiscussionSPC87 min
Jun 17, 9:01 AM CDTSevere Thunderstorm WatchSPC6 hr
Jun 17, 11:06 AM CDTMesoscale DiscussionSPC84 min
Jun 17, 12:13 PM CDTSpecial Weather StatementMRX47 min
Jul 6, 2:36 AM CDTHeat AdvisoryMRX16 hr
Jul 7, 2:45 AM CDTHeat AdvisoryMRX15 hr
Jul 7, 12:49 PM CDTMesoscale DiscussionSPC116 min
Jul 7, 1:04 PM CDTSpecial Weather StatementMRX41 min
Jul 7, 1:11 PM CDTSevere Thunderstorm WarningMRX49 min
Jul 8, 2:34 AM CDTHeat AdvisoryMRX15 hr
Jul 8, 5:25 PM CDTSevere Thunderstorm WarningMRX50 min
Jul 8, 6:15 PM CDTSpecial Weather StatementMRX45 min
Jul 9, 10:22 PM CDTAreal Flood AdvisoryMRX3 hr
Jul 20, 5:32 PM CDTSpecial Weather StatementMRX43 min
Jul 20, 5:40 PM CDTSevere Thunderstorm WarningMRX25 min
Jul 21, 5:33 AM CDTSpecial Weather StatementMRX57 min
Aug 7, 5:46 PM CDTSpecial Weather StatementMRX44 min
Aug 9, 2:30 PM CDTAreal Flood AdvisoryMRX2 hr
Aug 10, 9:25 AM CDTAreal Flood AdvisoryMRX3 hr
Aug 10, 10:02 AM CDTFlash Flood WarningMRX6 hr
Aug 10, 10:58 AM CDTFlash Flood WarningMRX4 hr
Aug 11, 12:09 AM CDTAreal Flood AdvisoryMRX3 hr
Aug 11, 12:26 AM CDTFlash Flood WarningMRX2 hr
Aug 11, 4:36 PM CDTAreal Flood AdvisoryMRX114 min
Aug 11, 5:05 PM CDTAreal Flood AdvisoryMRX115 min
Sep 4, 2:02 AM CDTFlood WatchMRX41 hr
Sep 4, 7:37 AM CDTAreal Flood AdvisoryMRX3 hr
Oct 12, 6:27 PM CDTSpecial Weather StatementMRX48 min
Oct 16, 3:08 AM CDTFreeze WatchMRX11 hr
Oct 16, 2:12 PM CDTFreeze WarningMRX43 hr
Oct 18, 1:53 AM CDTFreeze WarningMRX31 hr
Oct 19, 1:49 PM CDTFreeze WarningMRX19 hr
Nov 4, 2:47 AM CDTWind AdvisoryMRX40 hr
Nov 27, 10:43 AM CSTWind AdvisoryMRX7 hr
Nov 29, 3:33 PM CSTSpecial Weather StatementMRX57 min
Nov 29, 9:07 PM CSTAreal Flood AdvisoryMRX3 hr
Dec 5, 10:42 PM CSTAreal Flood AdvisoryMRX3 hr
Dec 7, 9:56 PM CSTDense Fog AdvisoryMRX10 hr
Dec 9, 8:02 PM CSTDense Fog AdvisoryMRX13 hr
Dec 13, 9:45 AM CSTRiver Flood WarningMRX3 days
Dec 14, 4:24 PM CSTAreal Flood AdvisoryMRX4 hr
Dec 14, 4:50 PM CSTAreal Flood WarningMRX8 hr
Dec 21, 2:49 AM CSTWind Chill WatchMRX12 hr
Dec 21, 2:30 PM CSTWind Chill WarningMRX70 hr
Dec 22, 3:04 AM CSTWinter Weather AdvisoryMRX32 hr
Dec 22, 1:49 PM CSTWind AdvisoryMRX25 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 archive20212023

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.