Alert archive / North Carolina

Weather alerts in Rowan County, North Carolina

3,357 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Rowan County and its neighbors

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

Alerts
3,357
Warnings
917
Watches
420
Advisories
760
Busiest year
2011217 alerts
Average year
82over 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, 67% of tornado reports in Rowan County fell inside a tornado warning issued on average 7 minutes before, and 88% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20082150%0
200920100%0
20107186%0
20115180%1100%1 min
201410100%0
201730100%0
201920100%0
20202150%1100%12 min
202110100%0
202210100%0
202360100%0
202410100%10%
Share of tornado reports inside a tornado warning, by year.

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008341653%771%34 min
2009251444%11100%28 min
2010332718%1872%30 min
2011463328%3190%22 min
2012362239%15100%22 min
2013221532%1182%26 min
2014251924%2383%20 min
201518176%989%24 min
2016252116%2560%19 min
2017231917%1656%24 min
2018252116%2584%24 min
2019181517%1173%21 min
2020201525%2190%17 min
202115940%1856%16 min
2022281836%2065%8 min
2023262215%3879%19 min
2024252212%3683%26 min
202511736%1450%18 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008110%4100%30 min
2009110%0
2010220%3100%84 min
20113167%0
2012110%1100%17 min
2013110%0
20153233%2100%199 min
2016110%1100%101 min
2017220%2100%78 min
20187357%1100%210 min
20204250%250%99 min
202110100%0
2023220%4100%81 min
20242150%1100%132 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 18, 3:29 PM EDTSevere Thunderstorm WarningGSP46 min
Sep 5, 1:52 PM EDTSevere Thunderstorm WarningGSP53 min
Aug 28, 4:48 PM EDTSevere Thunderstorm WarningGSP57 min
Aug 28, 4:22 PM EDTSevere Thunderstorm WarningGSP53 min
Aug 28, 3:27 PM EDTSevere Thunderstorm WarningGSP63 min
Aug 15, 2:59 PM EDTSevere Thunderstorm WarningGSP61 min
Aug 11, 5:46 PM EDTSevere Thunderstorm WarningGSP44 min
Aug 11, 4:27 PM EDTSevere Thunderstorm WarningGSP63 min
Aug 9, 8:35 PM EDTSevere Thunderstorm WarningGSP40 min
Jul 28, 7:24 PM EDTSevere Thunderstorm WarningGSP51 min
Jul 28, 6:44 PM EDTSevere Thunderstorm WarningGSP46 min
Jul 28, 5:21 PM EDTSevere Thunderstorm Warning Considerable damage threatGSP26 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.