Alert archive / Mississippi

Weather alerts in Clarke County, Mississippi

3,614 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Clarke County and its neighbors

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

Alerts
3,614
Warnings
1,124
Watches
680
Advisories
573
Busiest year
2023204 alerts
Average year
88over 41 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 2025, 88% of tornado reports in Clarke County fell inside a tornado warning issued on average 26 minutes before, and 69% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200811282%2100%19 min
200950100%0
20104175%0
201111373%6100%23 min
201211464%5100%7 min
201340100%0
20145260%1100%38 min
201510100%0
201610100%0
20177186%0
201820100%0
20195260%10100%34 min
20205340%1486%30 min
202130100%20%
202212558%989%29 min
20235420%250%0 min
20243167%2100%28 min
20259456%367%31 min
Share of tornado reports inside a tornado warning, by year.

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008321844%2378%16 min
200917476%683%23 min
2010201430%1567%22 min
2011291548%2850%18 min
201214750%1060%17 min
201315940%683%17 min
201411918%1315%44 min
201518761%6100%14 min
20168538%888%23 min
201711736%3462%18 min
201811555%1164%46 min
201912925%1747%27 min
2020171135%4279%31 min
202111918%1989%25 min
202218761%1729%37 min
2023321359%1788%21 min
2024151033%3269%33 min
2025181044%11100%36 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20083233%0
20094250%1100%46 min
20106350%1100%72 min
20115340%4100%309 min
20129544%757%172 min
201330100%0
20143167%1100%227 min
20152150%5100%32 min
2016440%6100%139 min
20173233%633%30 min
201811827%7100%83 min
20192150%1100%98 min
20205340%250%112 min
20215420%5100%112 min
20225340%4100%79 min
20235260%367%61 min
20246433%2100%74 min
2025220%0

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
Sep 21, 5:19 PM CDTSevere Thunderstorm WarningJAN56 min
Sep 21, 4:55 PM CDTSevere Thunderstorm WarningJAN37 min
Sep 21, 4:50 PM CDTSevere Thunderstorm WarningJAN40 min
Sep 21, 4:26 PM CDTSevere Thunderstorm WarningJAN49 min
Sep 12, 4:52 PM CDTSevere Thunderstorm WarningJAN61 min
Sep 11, 6:07 PM CDTFlash Flood WarningJAN106 min
Aug 26, 6:52 PM CDTSevere Thunderstorm WarningJAN53 min
Aug 20, 7:48 PM CDTSevere Thunderstorm WarningJAN57 min
Aug 20, 7:32 PM CDTSevere Thunderstorm WarningJAN58 min
Aug 20, 6:31 PM CDTSevere Thunderstorm WarningJAN59 min
Aug 19, 3:40 PM CDTSevere Thunderstorm WarningJAN52 min
Aug 18, 5:39 PM CDTSevere Thunderstorm WarningJAN51 min

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.