Alert archive / Tennessee / Henry County

Weather alerts in Henry County, Tennessee, 2015

111 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Henry County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
111
Warnings
22
Watches
27
Advisories
29
Busiest month
March17 alerts
Busiest day
December 23, 20155 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 Henry County in 2015 had a tornado report inside them.

Henry County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings6267%540%20 min
Flash flood warnings40100%0

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Memphis, TN: tornado warnings331070%2475%21 min
NWS Memphis, TN: severe thunderstorm warnings27310063%26867%20 min
NWS Memphis, TN: flash flood warnings1242977%7470%83 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 2, 7:56 PM CSTFlash Flood WatchMEG20 hr
Jan 6, 9:10 PM CSTWind Chill AdvisoryMEG36 hr
Jan 15, 7:03 AM CSTWinter Weather AdvisoryMEG5 hr
Feb 14, 3:28 AM CSTWind Chill AdvisoryMEG5 hr
Feb 14, 3:28 AM CSTWinter Storm WatchMEG35 hr
Feb 14, 8:55 AM CSTWind Chill AdvisoryMEG26 hr
Feb 15, 4:47 AM CSTWinter Storm WarningMEG39 hr
Feb 16, 2:57 AM CSTMesoscale DiscussionSPC6 hr
Feb 17, 3:25 PM CSTWinter Weather AdvisoryMEG18 hr
Feb 18, 3:46 AM CSTWind Chill AdvisoryMEG32 hr
Feb 18, 3:36 PM CSTWinter Storm WatchMEG24 hr
Feb 19, 3:09 PM CSTWinter Storm WarningMEG45 hr
Feb 20, 3:00 PM CSTMesoscale DiscussionSPC5 hr
Feb 20, 10:22 PM CSTMesoscale DiscussionSPC6 hr
Feb 21, 9:32 AM CSTFlash Flood WarningMEG3 hr
Feb 21, 12:47 PM CSTAreal Flood AdvisoryMEG3 hr
Mar 2, 3:46 AM CSTWinter Storm WatchMEG60 hr
Mar 3, 2:07 AM CSTFlash Flood WatchMEG33 hr
Mar 3, 2:08 AM CSTWinter Storm WarningMEG57 hr
Mar 3, 4:02 AM CSTDense Fog AdvisoryMEG8 hr
Mar 4, 2:53 AM CSTWind AdvisoryMEG29 hr
Mar 4, 7:27 PM CSTMesoscale DiscussionSPC6 hr
Mar 5, 2:06 AM CSTWind Chill AdvisoryMEG30 hr
Mar 9, 1:03 AM CDTDense Fog AdvisoryMEG9 hr
Mar 11, 3:16 PM CDTFlood WatchMEG61 hr
Mar 25, 7:02 PM CDTSevere Thunderstorm WatchSPC7 hr
Mar 25, 9:23 PM CDTMesoscale DiscussionSPC97 min
Mar 26, 1:35 AM CDTMesoscale DiscussionSPC25 min
Mar 26, 2:25 PM CDTFreeze WatchMEG24 hr
Mar 27, 2:20 PM CDTFreeze WatchMEG25 hr
Mar 27, 2:20 PM CDTFreeze WarningMEG17 hr
Mar 28, 2:59 PM CDTFreeze WarningMEG18 hr
Mar 31, 5:13 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 3, 11:56 AM CDTMesoscale DiscussionSPC94 min
Apr 3, 12:14 PM CDTTornado WatchSPC8 hr
Apr 4, 3:02 AM CDTFrost AdvisoryMEG29 hr
Apr 9, 6:32 PM CDTSevere Thunderstorm WatchSPC5 hr
Apr 9, 10:01 PM CDTMesoscale DiscussionSPC119 min
Apr 19, 8:02 PM CDTTornado WatchSPC5 hr
Apr 19, 10:16 PM CDTMesoscale DiscussionSPC59 min
Apr 25, 8:57 AM CDTWind AdvisoryMEG10 hr
May 17, 3:47 AM CDTFlash Flood WatchMEG31 hr
May 24, 3:30 PM CDTFlash Flood WatchMEG36 hr
May 27, 12:13 PM CDTSpecial Weather StatementMEG47 min
May 30, 1:06 PM CDTSpecial Weather StatementMEG39 min
May 30, 1:44 PM CDTSevere Thunderstorm WarningMEG46 min
May 30, 2:16 PM CDTSevere Thunderstorm WarningMEG59 min
May 30, 3:11 PM CDTSpecial Weather StatementMEG49 min
Jun 8, 12:08 PM CDTMesoscale DiscussionSPC97 min
Jun 8, 12:57 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 8, 3:24 PM CDTMesoscale DiscussionSPC96 min
Jun 8, 5:59 PM CDTSpecial Weather StatementMEG31 min
Jun 24, 2:53 PM CDTHeat AdvisoryMEG28 hr
Jun 26, 11:50 AM CDTMesoscale DiscussionSPC115 min
Jun 26, 12:18 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 3:16 PM CDTMesoscale DiscussionSPC89 min
Jun 26, 5:56 PM CDTFlash Flood WarningMEG94 min
Jun 26, 7:13 PM CDTMesoscale DiscussionSPC62 min
Jun 29, 5:27 PM CDTMesoscale DiscussionSPC93 min
Jun 29, 6:28 PM CDTSpecial Weather StatementMEG47 min
Jun 29, 9:08 PM CDTFlash Flood WarningMEG3 hr
Jul 1, 10:13 AM CDTSevere Thunderstorm WarningMEG62 min
Jul 1, 11:29 AM CDTMesoscale DiscussionSPC61 min
Jul 2, 11:59 AM CDTMesoscale DiscussionSPC2 hr
Jul 2, 5:50 PM CDTMesoscale DiscussionSPC115 min
Jul 3, 8:31 AM CDTFlash Flood WatchMEG34 hr
Jul 7, 3:53 PM CDTFlash Flood WatchMEG14 hr
Jul 12, 3:09 AM CDTHeat AdvisoryMEG9 days
Jul 14, 12:13 PM CDTSevere Thunderstorm WatchSPC7 hr
Jul 14, 2:41 PM CDTMesoscale DiscussionSPC94 min
Jul 20, 6:23 PM CDTMesoscale DiscussionSPC97 min
Jul 20, 6:42 PM CDTSevere Thunderstorm WatchSPC5 hr
Jul 20, 8:28 PM CDTMesoscale DiscussionSPC92 min
Jul 20, 10:11 PM CDTMesoscale DiscussionSPC64 min
Jul 27, 3:42 AM CDTHeat AdvisoryMEG64 hr
Aug 10, 4:14 AM CDTSevere Thunderstorm WarningMEG46 min
Oct 12, 3:49 PM CDTMesoscale DiscussionSPC2 hr
Oct 12, 5:39 PM CDTSevere Thunderstorm WarningMEG36 min
Oct 16, 1:43 PM CDTFrost AdvisoryMEG19 hr
Oct 17, 3:07 AM CDTFrost AdvisoryMEG29 hr
Oct 17, 1:49 PM CDTFreeze WarningMEG18 hr
Oct 18, 3:33 AM CDTFrost AdvisoryMEG28 hr
Oct 18, 1:25 PM CDTFreeze WarningMEG18 hr
Nov 1, 1:07 AM CDTDense Fog AdvisoryMEG9 hr
Nov 2, 9:38 PM CSTDense Fog AdvisoryMEG11 hr
Nov 10, 3:47 AM CSTDense Fog AdvisoryMEG6 hr
Nov 12, 2:22 AM CSTHard Freeze WatchMEG98 min
Nov 12, 4:02 AM CSTFreeze WatchMEG23 hr
Nov 13, 3:20 AM CSTFreeze WarningMEG30 hr
Nov 14, 4:16 AM CSTFreeze WarningMEG29 hr
Nov 16, 3:23 AM CSTFlash Flood WatchMEG52 hr
Nov 16, 2:10 PM CSTWind AdvisoryMEG37 hr
Nov 19, 4:00 PM CSTFrost AdvisoryMEG16 hr
Nov 20, 2:07 PM CSTFreeze WatchMEG12 hr
Nov 21, 2:18 AM CSTFreeze WarningMEG31 hr
Nov 21, 2:18 AM CSTFreeze WarningMEG55 hr
Dec 9, 8:33 PM CSTDense Fog AdvisoryMEG14 hr
Dec 12, 2:34 PM CSTWind AdvisoryMEG33 hr
Dec 22, 7:30 AM CSTDense Fog AdvisoryMEG4 hr
Dec 23, 11:57 AM CSTTornado Watch PDSSPC9 hr
Dec 23, 2:49 PM CSTMesoscale DiscussionSPC86 min
Dec 23, 4:27 PM CSTFlash Flood WarningMEG3 hr
Dec 23, 4:45 PM CSTTornado WarningMEG45 min
Dec 23, 5:10 PM CSTSevere Thunderstorm WarningMEG35 min
Dec 23, 6:35 PM CSTMesoscale DiscussionSPC55 min
Dec 25, 2:32 AM CSTFlash Flood WatchMEG3 days
Dec 25, 9:35 PM CSTDense Fog AdvisoryMEG7 hr
Dec 26, 9:08 AM CSTMesoscale DiscussionSPC2 hr
Dec 27, 12:54 PM CSTWind AdvisoryMEG29 hr
Dec 28, 8:38 AM CSTMesoscale DiscussionSPC67 min
Dec 28, 10:09 AM CSTSpecial Weather StatementMEG66 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 archive20142016

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.