Alert archive / North Carolina
Weather alerts in North Carolina, 2024
5,392 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 5,392
- Warnings
- 1,806
- Watches
- 168
- Advisories
- 1,212
- Busiest month
- August1,028 alerts
- Busiest day
- August 8, 2024172 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
27 of 181 tornado warnings covering North Carolina in 2024 had a tornado report inside them; 37 of 55 tornado reports fell inside a warning, on average 13 minutes after it went out.
North Carolina, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 181 | 27 | 85% | 55 | 67% | 13 min |
| Severe thunderstorm warnings | 641 | 448 | 30% | 1,079 | 81% | 24 min |
| Flash flood warnings | 272 | 177 | 35% | 440 | 90% | 126 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 17 | 7 | 59% | 18 | 50% | 9 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 289 | 209 | 28% | 588 | 82% | 24 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 116 | 54 | 53% | 144 | 90% | 138 min |
| NWS Wakefield, VA: tornado warnings | 43 | 3 | 93% | 3 | 100% | 11 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 202 | 148 | 27% | 315 | 87% | 23 min |
| NWS Wakefield, VA: flash flood warnings | 144 | 110 | 24% | 212 | 98% | 74 min |
| NWS Blacksburg, VA: tornado warnings | 72 | 5 | 93% | 23 | 26% | 17 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 192 | 148 | 23% | 738 | 66% | 24 min |
| NWS Blacksburg, VA: flash flood warnings | 89 | 53 | 40% | 210 | 73% | 169 min |
| NWS Morristown, TN: tornado warnings | 18 | 3 | 83% | 4 | 100% | 11 min |
| NWS Morristown, TN: severe thunderstorm warnings | 189 | 140 | 26% | 229 | 86% | 22 min |
| NWS Morristown, TN: flash flood warnings | 61 | 35 | 43% | 92 | 76% | 75 min |
| NWS Raleigh, NC: tornado warnings | 58 | 11 | 81% | 19 | 95% | 15 min |
| NWS Raleigh, NC: severe thunderstorm warnings | 175 | 137 | 22% | 304 | 87% | 21 min |
| NWS Raleigh, NC: flash flood warnings | 69 | 47 | 32% | 141 | 90% | 102 min |
| NWS Wilmington, NC: tornado warnings | 51 | 5 | 90% | 9 | 89% | 11 min |
| NWS Wilmington, NC: severe thunderstorm warnings | 102 | 60 | 41% | 173 | 83% | 26 min |
| NWS Wilmington, NC: flash flood warnings | 41 | 29 | 29% | 95 | 96% | 202 min |
| NWS Newport/Morehead City, NC: tornado warnings | 41 | 6 | 85% | 6 | 100% | 9 min |
| NWS Newport/Morehead City, NC: severe thunderstorm warnings | 104 | 62 | 40% | 126 | 96% | 27 min |
| NWS Newport/Morehead City, NC: flash flood warnings | 35 | 26 | 26% | 66 | 95% | 82 min |
An office's figures cover every county it serves, including across state lines.
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.
The alerts
5,392 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- New Hanover County399
- Pender County292
- Dare County268
- Brunswick County264
- Onslow County249
- Wake County240
- Hyde County239
- Carteret County232
- Craven County206
- Franklin County204
- Durham County199
- Johnston County199
- Bladen County194
- Jones County192
- Beaufort County190
- Sampson County184
- Wayne County183
- Chatham County183
- Harnett County181
- Columbus County179
- Mecklenburg County178
- Cumberland County177
- Lenoir County176
- Nash County176
- Duplin County174
- Moore County174
- Robeson County172
- Wilson County171
- Granville County171
- Edgecombe County170
- Pitt County170
- Currituck County163
- Lee County161
- Orange County161
- Richmond County161
- Vance County158
- Hoke County157
- Montgomery County152
- Union County151
- Scotland County151
60 more counties
- Greene County150
- Pamlico County147
- Bertie County147
- Anson County146
- Halifax County143
- Northampton County143
- Cabarrus County141
- Gaston County140
- Stanly County139
- Henderson County138
- Guilford County138
- Martin County138
- Chowan County137
- Hertford County137
- Alamance County136
- Burke County135
- Person County135
- Randolph County135
- Warren County135
- Perquimans County133
- Caldwell County131
- Ashe County128
- Pasquotank County128
- Gates County128
- Davidson County127
- Camden County127
- McDowell County126
- Surry County126
- Iredell County126
- Rutherford County123
- Washington County123
- Buncombe County121
- Catawba County117
- Cleveland County117
- Transylvania County116
- Alleghany County116
- Watauga County115
- Tyrrell County115
- Caswell County112
- Rockingham County112
- Rowan County112
- Wilkes County110
- Lincoln County110
- Polk County109
- Forsyth County109
- Alexander County103
- Stokes County102
- Haywood County102
- Avery County97
- Yadkin County94
- Madison County93
- Jackson County92
- Yancey County91
- Cherokee County89
- Mitchell County81
- Davie County80
- Swain County80
- Macon County78
- Graham County75
- Clay County75
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.