Alert archive / Mississippi

Weather alerts in Pearl River County, Mississippi

4,648 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Pearl River County and its neighbors

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

Alerts
4,648
Warnings
1,677
Watches
707
Advisories
855
Busiest year
2023305 alerts
Average year
113over 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, 36% of tornado reports in Pearl River County fell inside a tornado warning issued on average 6 minutes before, and 84% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008160100%10%
200910100%10%
201060100%0
201118478%333%15 min
201218289%333%26 min
201330100%10%
20153233%633%6 min
20168363%367%1 min
20174175%1100%0 min
20187186%10%
201960100%0
20204175%1100%1 min
202116475%250%1 min
202210190%10%
2023010%
20246267%0
202550100%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
2008281257%1292%20 min
200923865%667%22 min
201010370%2100%34 min
2011371170%1258%29 min
201228582%333%23 min
201312650%2100%14 min
2014100100%20%
201516475%40%
201618289%333%9 min
201717571%771%20 min
201810640%633%12 min
201980100%10%
202018289%30%
202116756%580%13 min
202218383%3100%3 min
2023331070%1392%24 min
2024211433%786%23 min
202517853%475%15 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200810100%0
200940100%0
201010100%0
201120100%0
20126433%4100%100 min
201310100%0
20157357%2100%89 min
20168538%0
201720100%0
20183233%0
201960100%10%
202030100%0
20219456%2100%106 min
20226267%0
20235260%0
202410550%250%5 min
202530100%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, 5:35 PM CDTSevere Thunderstorm WarningLIX55 min
Sep 4, 10:39 AM CDTFlash Flood WarningLIX3 hr
Aug 27, 5:20 AM CDTSevere Thunderstorm WarningLIX55 min
Aug 25, 3:55 PM CDTSevere Thunderstorm WarningLIX25 min
Aug 21, 4:58 PM CDTSevere Thunderstorm WarningLIX32 min
Aug 21, 4:17 PM CDTSevere Thunderstorm Warning Considerable damage threatLIX43 min
Aug 21, 4:07 PM CDTSevere Thunderstorm Warning Considerable damage threatLIX38 min
Aug 20, 11:13 AM CDTExtreme Heat WarningLIX33 hr
Aug 16, 4:05 PM CDTSevere Thunderstorm WarningLIX21 min
Aug 16, 10:47 AM CDTExtreme Heat WarningLIX33 hr
Aug 15, 11:09 AM CDTExtreme Heat WarningLIX33 hr
Aug 14, 10:55 AM CDTExtreme Heat WarningLIX33 hr

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.