Alert archive / Mississippi

Weather alerts in Montgomery County, Mississippi

3,280 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Montgomery County and its neighbors

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

Alerts
3,280
Warnings
888
Watches
705
Advisories
586
Busiest year
2011217 alerts
Average year
84over 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 2025, 94% of tornado reports in Montgomery County fell inside a tornado warning issued on average 12 minutes before, and 65% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20083167%2100%2 min
200920100%0
20104175%0
201112650%2100%5 min
201210100%0
20143167%250%20 min
201520100%0
201610100%0
2017220%3100%9 min
20183167%1100%1 min
20192150%1100%9 min
20214175%0
20227357%0
2023110%6100%20 min
202410100%0
20256183%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
2008291548%683%11 min
2009211433%1191%23 min
2010211433%786%18 min
2011382534%1681%35 min
2012241729%1191%23 min
2013151033%8100%20 min
2014161038%475%35 min
201510640%450%43 min
20168625%4100%35 min
20179811%3100%16 min
2018131115%4100%7 min
2019161131%683%20 min
2020151220%10100%26 min
202111645%560%30 min
202215847%560%12 min
2023231248%1250%25 min
202410640%580%28 min
2025301840%1070%28 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20084250%0
2009221055%580%91 min
20109456%3100%52 min
2011171041%683%61 min
20123167%0
20134175%1100%103 min
20145260%0
201530100%0
20165420%2100%191 min
20173167%0
20189456%1100%51 min
201910820%2100%116 min
20203233%3100%91 min
20213233%3100%67 min
20222150%0
2023220%0
2024110%1100%341 min
20255340%1100%61 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
Sep 21, 5:24 PM CDTSevere Thunderstorm WarningJAN51 min
Sep 12, 1:28 PM CDTSevere Thunderstorm WarningJAN62 min
Aug 22, 8:01 PM CDTSevere Thunderstorm WarningJAN29 min
Aug 20, 8:49 PM CDTSevere Thunderstorm WarningJAN56 min
Aug 20, 8:23 PM CDTSevere Thunderstorm WarningJAN52 min
Aug 20, 8:22 PM CDTFlash Flood WarningJAN2 hr
Aug 20, 8:05 PM CDTSevere Thunderstorm WarningJAN55 min
Aug 20, 7:36 PM CDTSevere Thunderstorm WarningJAN54 min
Aug 20, 7:07 PM CDTSevere Thunderstorm WarningJAN68 min
Aug 20, 6:24 PM CDTSevere Thunderstorm WarningJAN81 min
Aug 20, 5:23 PM CDTSevere Thunderstorm WarningJAN67 min
Aug 20, 4:23 PM CDTSevere Thunderstorm WarningJAN67 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.