Alert archive / Tennessee / White County

Weather alerts in White County, Tennessee, 2020

112 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

White County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
112
Warnings
20
Watches
21
Advisories
36
Busiest month
April21 alerts
Busiest day
February 6, 20209 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 3 tornado warnings covering White County in 2020 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.

White County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3167%20%
Severe thunderstorm warnings9722%1182%25 min
Flash flood warnings3233%1100%86 min

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Nashville, TN: tornado warnings28582%2223%8 min
NWS Nashville, TN: severe thunderstorm warnings17211533%36282%18 min
NWS Nashville, TN: flash flood warnings352140%6578%77 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, 2:18 AM CSTFlood WatchOHX58 hr
Jan 10, 3:34 AM CSTWind AdvisoryOHX36 hr
Jan 11, 6:57 AM CSTTornado WatchSPC7 hr
Jan 11, 8:20 AM CSTMesoscale DiscussionSPC55 min
Jan 11, 9:28 AM CSTMesoscale DiscussionSPC92 min
Jan 11, 12:42 PM CSTTornado WatchSPC7 hr
Feb 5, 2:44 AM CSTFlood WatchOHX32 hr
Feb 5, 6:32 PM CSTFlash Flood WarningOHX6 hr
Feb 5, 6:49 PM CSTAreal Flood AdvisoryOHX3 hr
Feb 5, 7:20 PM CSTSpecial Weather StatementOHX40 min
Feb 5, 7:32 PM CSTSevere Thunderstorm WarningOHX43 min
Feb 5, 7:34 PM CSTFlash Flood WarningOHX4 hr
Feb 6, 1:29 AM CSTAreal Flood AdvisoryOHX3 hr
Feb 6, 4:30 AM CSTAreal Flood AdvisoryOHX9 hr
Feb 6, 1:29 PM CSTAreal Flood AdvisoryOHX3 hr
Feb 6, 2:25 PM CSTWinter Weather AdvisoryOHX22 hr
Feb 9, 3:00 AM CSTFlood WatchOHX55 hr
Feb 11, 11:34 AM CSTFlash Flood WatchOHX42 hr
Feb 12, 6:57 PM CSTSpecial Weather StatementOHX48 min
Feb 12, 7:23 PM CSTSevere Thunderstorm WarningOHX37 min
Feb 20, 2:40 AM CSTWinter Weather AdvisoryOHX12 hr
Feb 27, 2:41 PM CSTWinter Weather AdvisoryOHX21 hr
Mar 2, 11:22 PM CSTTornado WatchSPC7 hr
Mar 3, 1:37 AM CSTSevere Thunderstorm WarningOHX38 min
Mar 3, 1:56 AM CSTTornado WarningOHX20 min
Mar 12, 9:46 PM CDTSpecial Weather StatementOHX44 min
Mar 18, 3:01 AM CDTDense Fog AdvisoryOHX6 hr
Mar 20, 12:57 PM CDTFlash Flood WatchOHX7 hr
Mar 24, 3:06 PM CDTTornado WatchSPC7 hr
Mar 24, 7:20 PM CDTAreal Flood AdvisoryOHX3 hr
Mar 28, 9:34 PM CDTTornado WatchSPC6 hr
Mar 29, 1:50 AM CDTMesoscale DiscussionSPC85 min
Mar 29, 2:03 AM CDTSevere Thunderstorm WarningOHX42 min
Mar 29, 2:29 AM CDTTornado WarningOHX16 min
Apr 3, 7:09 PM CDTFlash Flood WarningOHX6 hr
Apr 8, 9:52 PM CDTMesoscale DiscussionSPC113 min
Apr 8, 10:16 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 8, 10:45 PM CDTSpecial Weather StatementOHX45 min
Apr 8, 11:09 PM CDTSpecial Weather StatementOHX51 min
Apr 9, 2:07 PM CDTFreeze WatchOHX20 hr
Apr 10, 10:32 AM CDTFreeze WarningOHX21 hr
Apr 11, 9:03 PM CDTFlash Flood WatchOHX34 hr
Apr 11, 9:10 PM CDTWind AdvisoryOHX37 hr
Apr 12, 8:30 PM CDTAreal Flood AdvisoryOHX3 hr
Apr 13, 5:17 PM CDTFreeze WatchOHX20 hr
Apr 14, 1:32 PM CDTFreeze WarningOHX19 hr
Apr 15, 3:38 AM CDTFreezing Fog AdvisoryOHX5 hr
Apr 15, 2:21 PM CDTFreeze WarningOHX18 hr
Apr 23, 4:20 AM CDTWind AdvisoryOHX11 hr
Apr 25, 2:32 PM CDTMesoscale DiscussionSPC88 min
Apr 25, 3:27 PM CDTSpecial Weather StatementOHX48 min
Apr 25, 5:11 PM CDTTornado WatchSPC4 hr
Apr 27, 3:09 AM CDTDense Fog AdvisoryOHX6 hr
Apr 29, 1:24 PM CDTSpecial Weather StatementOHX51 min
Apr 29, 1:56 PM CDTAreal Flood AdvisoryOHX2 hr
May 3, 3:08 PM CDTMesoscale DiscussionSPC67 min
May 3, 3:40 PM CDTSevere Thunderstorm WatchSPC4 hr
May 3, 5:11 PM CDTSevere Thunderstorm WarningOHX49 min
May 3, 5:18 PM CDTSevere Thunderstorm WarningOHX42 min
May 3, 5:53 PM CDTSevere Thunderstorm WarningOHX37 min
May 3, 6:18 PM CDTMesoscale DiscussionSPC57 min
May 4, 6:42 PM CDTSevere Thunderstorm WatchSPC6 hr
May 7, 2:30 AM CDTFreeze WatchOHX25 hr
May 8, 3:06 AM CDTFreeze WarningOHX29 hr
May 9, 3:13 AM CDTFrost AdvisoryOHX29 hr
May 27, 9:41 PM CDTAreal Flood AdvisoryOHX2 hr
Jun 28, 11:49 AM CDTMesoscale DiscussionSPC2 hr
Jul 5, 12:13 PM CDTSpecial Weather StatementOHX17 min
Jul 20, 11:57 AM CDTMesoscale DiscussionSPC2 hr
Jul 20, 8:24 PM CDTSpecial Weather StatementOHX36 min
Jul 24, 12:29 PM CDTSpecial Weather StatementOHX46 min
Jul 24, 1:01 PM CDTAreal Flood AdvisoryOHX103 min
Jul 24, 7:56 PM CDTAreal Flood AdvisoryOHX3 hr
Jul 31, 12:21 PM CDTMesoscale DiscussionSPC54 min
Jul 31, 2:18 PM CDTSevere Thunderstorm WarningOHX28 min
Jul 31, 8:01 PM CDTSpecial Weather StatementOHX59 min
Aug 10, 1:17 PM CDTMesoscale DiscussionSPC118 min
Aug 10, 4:08 PM CDTSevere Thunderstorm WarningOHX19 min
Aug 10, 4:27 PM CDTSpecial Weather StatementOHX33 min
Aug 11, 1:23 AM CDTAreal Flood AdvisoryOHX3 hr
Aug 12, 4:15 PM CDTSpecial Weather StatementOHX30 min
Aug 12, 4:43 PM CDTSpecial Weather StatementOHX32 min
Aug 12, 4:53 PM CDTAreal Flood AdvisoryOHX97 min
Aug 19, 11:57 AM CDTSpecial Weather StatementOHX33 min
Aug 19, 1:15 PM CDTSpecial Weather StatementOHX45 min
Aug 19, 1:23 PM CDTAreal Flood AdvisoryOHX3 hr
Aug 28, 1:04 PM CDTTornado WatchSPC3 hr
Aug 28, 6:15 PM CDTSpecial Weather StatementOHX30 min
Aug 28, 6:38 PM CDTSpecial Weather StatementOHX37 min
Aug 28, 6:54 PM CDTTornado WarningOHX16 min
Aug 29, 3:22 PM CDTMesoscale DiscussionSPC113 min
Aug 29, 5:29 PM CDTSpecial Weather StatementOHX46 min
Aug 29, 6:14 PM CDTSpecial Weather StatementOHX46 min
Aug 30, 3:15 PM CDTMesoscale DiscussionSPC3 hr
Sep 1, 7:11 PM CDTAreal Flood AdvisoryOHX2 hr
Sep 26, 2:21 AM CDTDense Fog AdvisoryOHX7 hr
Sep 28, 11:52 PM CDTDense Fog AdvisoryOHX9 hr
Oct 16, 9:50 AM CDTFrost AdvisoryOHX22 hr
Oct 28, 10:15 AM CDTFlash Flood WatchOHX19 hr
Oct 30, 2:21 PM CDTFreeze WatchOHX36 hr
Nov 1, 1:18 AM CSTFreeze WarningOHX31 hr
Nov 14, 2:39 PM CSTWind AdvisoryOHX27 hr
Nov 15, 8:11 AM CSTSpecial Weather StatementOHX49 min
Nov 15, 8:32 AM CSTSpecial Weather StatementOHX58 min
Nov 24, 8:23 PM CSTWind AdvisoryOHX19 hr
Nov 27, 1:37 AM CSTDense Fog AdvisoryOHX8 hr
Nov 29, 2:04 PM CSTWinter Weather AdvisoryOHX40 hr
Dec 5, 2:06 AM CSTFreezing Fog AdvisoryOHX7 hr
Dec 6, 1:40 AM CSTFreezing Fog AdvisoryOHX7 hr
Dec 20, 8:14 PM CSTDense Fog AdvisoryOHX8 hr
Dec 23, 1:46 PM CSTWind AdvisoryOHX10 hr
Dec 23, 2:29 PM CSTWinter Weather AdvisoryOHX42 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 archive20192021

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.