Alert archive / Mississippi

Weather alerts in Winston County, Mississippi

3,318 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Winston County and its neighbors

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

Alerts
3,318
Warnings
988
Watches
676
Advisories
536
Busiest year
2011204 alerts
Average year
81over 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, 78% of tornado reports in Winston County fell inside a tornado warning issued on average 18 minutes before, and 70% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20087271%10%
2009100100%0
201014379%0
201114471%3100%17 min
201210100%0
20144325%11100%26 min
20152150%580%18 min
20168363%5100%10 min
201730100%0
2018110%250%2 min
20194325%875%17 min
20204175%0
202110100%0
20224250%20%
202410100%0
20253167%333%0 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
2008291066%1267%11 min
2009221245%1070%25 min
2010322038%1070%28 min
2011362336%1283%21 min
2012341459%1250%8 min
201312925%2100%8 min
2014271641%1688%18 min
201512650%863%18 min
2016161225%1164%18 min
201710640%6100%17 min
201814843%1283%21 min
2019181422%1267%14 min
2020241825%15100%34 min
2021211338%1681%24 min
2022171512%1675%21 min
2023271641%1979%29 min
202412650%250%21 min
2025261735%10100%29 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008110%0
20096433%2100%101 min
20102150%0
2011181233%1100%216 min
20125340%3100%26 min
20134175%1100%34 min
20146267%1100%99 min
201540100%0
20163233%10%
20173167%1100%53 min
201830100%0
20195340%333%48 min
202012833%967%108 min
2021330%650%45 min
202210100%0
2023770%14100%132 min
2025110%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, 8:53 PM CDTSevere Thunderstorm WarningJAN67 min
Sep 12, 3:40 PM CDTSevere Thunderstorm WarningJAN65 min
Sep 12, 2:41 PM CDTSevere Thunderstorm WarningJAN49 min
Aug 20, 8:49 PM CDTSevere Thunderstorm WarningJAN56 min
Aug 20, 8:46 PM CDTSevere Thunderstorm WarningJAN59 min
Aug 20, 8:05 PM CDTSevere Thunderstorm WarningJAN55 min
Aug 20, 7:07 PM CDTSevere Thunderstorm WarningJAN68 min
Aug 20, 4:23 PM CDTSevere Thunderstorm WarningJAN67 min
Aug 20, 4:11 PM CDTSevere Thunderstorm WarningJAN49 min
Aug 20, 3:19 PM CDTSevere Thunderstorm WarningJAN56 min
Aug 19, 4:31 PM CDTSevere Thunderstorm WarningJAN59 min
Aug 19, 2:41 PM CDTSevere Thunderstorm WarningJAN49 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.