Alert archive / North Carolina

Weather alerts in Iredell County, North Carolina

3,574 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Iredell County and its neighbors

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

Alerts
3,574
Warnings
1,078
Watches
408
Advisories
814
Busiest year
2011228 alerts
Average year
87over 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, 29% of tornado reports in Iredell County fell inside a tornado warning issued on average 36 minutes before, and 89% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20083167%0
200920100%0
20109278%0
201130100%10%
201210100%0
201410100%0
201610100%0
201740100%0
201960100%0
202140100%20%
20224175%450%36 min
202350100%0
202430100%0
2025110%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
2008422443%3281%28 min
2009261446%7100%22 min
2010433519%2669%20 min
2011584916%4693%27 min
2012422736%1995%25 min
2013382632%3087%23 min
2014322038%1292%19 min
2015141214%1464%18 min
201626248%12100%27 min
2017302613%2669%14 min
2018231822%1883%18 min
2019241729%2475%18 min
2020221532%1346%15 min
2021161225%1889%26 min
2022342041%2665%30 min
2023342624%3773%20 min
2024292224%3485%22 min
2025151033%3040%20 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20083167%0
2009220%3100%23 min
20102150%1100%49 min
2011110%0
20122150%0
20135340%250%113 min
201420100%0
2015110%2100%264 min
2016110%6100%80 min
2017110%0
2018330%7100%107 min
201910100%0
20206350%333%161 min
202120100%0
2022110%0
20234325%3100%79 min
20247357%1283%69 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, 6:44 PM EDTSevere Thunderstorm WarningGSP46 min
Sep 18, 3:32 PM EDTSevere Thunderstorm WarningGSP43 min
Sep 5, 1:52 PM EDTSevere Thunderstorm WarningGSP53 min
Sep 5, 1:34 PM EDTSevere Thunderstorm WarningGSP41 min
Sep 4, 5:11 PM EDTSevere Thunderstorm WarningGSP35 min
Aug 28, 4:22 PM EDTSevere Thunderstorm WarningGSP53 min
Aug 28, 3:27 PM EDTSevere Thunderstorm WarningGSP63 min
Aug 28, 3:01 PM EDTSevere Thunderstorm WarningGSP44 min
Aug 20, 9:53 PM EDTSevere Thunderstorm WarningGSP37 min
Aug 17, 8:11 PM EDTSevere Thunderstorm WarningGSP46 min
Aug 17, 6:25 PM EDTSevere Thunderstorm WarningGSP50 min
Aug 16, 3:24 PM EDTSevere Thunderstorm WarningGSP51 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.