Alert archive / North Carolina

Weather alerts in Harnett County, North Carolina

4,035 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Harnett County and its neighbors

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

Alerts
4,035
Warnings
1,133
Watches
535
Advisories
778
Busiest year
2011242 alerts
Average year
101over 40 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, 83% of tornado reports in Harnett County fell inside a tornado warning issued on average 22 minutes before, and 81% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
200850100%0
20093167%0
2011330%4100%27 min
20143167%0
201510100%0
201630100%0
201720100%0
20195180%250%0 min
20204175%0
202210100%0
202310100%0
202450100%0
202510100%0

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2008482940%1377%24 min
2009282029%16100%27 min
2010281932%9100%25 min
2011433616%1968%23 min
2012362725%1593%17 min
2013151033%956%20 min
2014221627%875%12 min
2015262023%1292%25 min
2016342624%1283%23 min
2017271833%12100%16 min
2018352431%1889%19 min
2019332621%1173%19 min
2020221436%6100%30 min
2021241633%1267%22 min
2022402928%9100%22 min
2023342721%1392%31 min
2024161225%2100%17 min
2025443520%12100%19 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20087443%1100%33 min
20094175%20%
20104250%0
2011220%10%
20135420%2100%54 min
201410100%0
201510100%0
201610910%5100%202 min
201710100%0
2018121017%1688%561 min
2019110%0
20208625%10100%32 min
2021010%
20227529%0
20235260%0
2024660%3100%91 min
2025550%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 18, 6:11 PM EDTSevere Thunderstorm WarningRAH49 min
Sep 18, 4:56 PM EDTSevere Thunderstorm WarningRAH49 min
Sep 18, 4:31 PM EDTSevere Thunderstorm WarningRAH44 min
Sep 18, 4:10 PM EDTSevere Thunderstorm WarningRAH50 min
Sep 5, 4:39 PM EDTSevere Thunderstorm WarningRAH51 min
Sep 5, 4:10 PM EDTSevere Thunderstorm WarningRAH50 min
Aug 28, 3:54 PM EDTSevere Thunderstorm WarningRAH38 min
Aug 24, 5:37 AM EDTSevere Thunderstorm WarningRAH35 min
Aug 21, 6:28 PM EDTSevere Thunderstorm Warning Considerable damage threatRAH47 min
Aug 20, 2:18 PM EDTSevere Thunderstorm WarningRAH42 min
Aug 16, 1:52 PM EDTSevere Thunderstorm WarningRAH38 min
Aug 11, 6:22 PM EDTSevere Thunderstorm WarningRAH53 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.