Alert archive / Tennessee

Weather alerts in Bedford County, Tennessee

3,102 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Bedford County and its neighbors

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
3,102
Warnings
846
Watches
561
Advisories
719
Busiest year
2011180 alerts
Average year
80over 39 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

Warning verification

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

From 2008 to 2023, 73% of tornado reports in Bedford County fell inside a tornado warning issued on average 14 minutes before, and 74% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20083233%2100%21 min
20099189%0
201090100%0
20119278%1100%9 min
20125180%250%7 min
20139456%1100%24 min
201420100%0
2015010%
20162150%0
201740100%10%
2018110%1100%16 min
20202150%1100%13 min
20212150%1100%0 min
202220100%0
20237357%0
Share of tornado reports inside a tornado warning, by year.

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20083167%1100%8 min
200916569%333%61 min
201020575%2100%14 min
2011352140%1182%14 min
2012251732%1060%11 min
2013171229%5100%10 min
201418667%520%15 min
20155260%1100%3 min
2016221436%1050%17 min
2017251732%2080%14 min
20186517%540%23 min
2019990%8100%14 min
20208713%1267%12 min
2021171041%1323%20 min
202214843%1443%26 min
2023231630%1776%15 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200920100%0
201010100%0
201120100%0
2013110%0
2018220%1100%87 min
20196517%367%97 min
20216433%580%20 min
202210100%10%
2023110%1100%101 min

Years from 2008, the first full year of storm-based warnings. The year still running is on its own page.

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.

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeLasted
Aug 14, 10:49 AM CDTExtreme Heat WarningOHX56 hr
Jul 11, 5:57 PM CDTSevere Thunderstorm WarningOHX48 min
Jul 5, 10:24 AM CDTSevere Thunderstorm WarningOHX36 min
Jun 28, 11:51 AM CDTExtreme Heat WarningOHX5 days
Jun 9, 5:41 PM CDTSevere Thunderstorm Warning Considerable damage threatOHX64 min
Apr 28, 3:16 AM CDTSevere Thunderstorm WarningOHX44 min
Apr 28, 2:06 AM CDTSevere Thunderstorm Warning Considerable damage threatOHX37 min
Mar 15, 11:43 PM CDTSevere Thunderstorm Warning Considerable damage threatOHX62 min
Mar 15, 11:03 PM CDTSevere Thunderstorm Warning Considerable damage threatOHX42 min
Mar 11, 3:24 PM CDTSevere Thunderstorm WarningOHX41 min
Jan 25, 11:15 AM CSTExtreme Cold WarningOHX47 hr
Jan 22, 11:36 AM CSTWinter Storm WarningOHX3 days

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive

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.