Alert archive / North Carolina
Weather alerts in North Carolina, 2022
5,760 weather alerts in 2022, 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 2022. Tap one for its archive.
- Alerts
- 5,760
- Warnings
- 1,494
- Watches
- 125
- Advisories
- 1,078
- Busiest month
- July1,569 alerts
- Busiest day
- May 6, 2022157 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
13 of 110 tornado warnings covering North Carolina in 2022 had a tornado report inside them; 15 of 23 tornado reports fell inside a warning, on average 15 minutes after it went out.
North Carolina, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 110 | 13 | 88% | 23 | 65% | 15 min |
| Severe thunderstorm warnings | 752 | 474 | 37% | 1,204 | 79% | 21 min |
| Flash flood warnings | 86 | 36 | 58% | 85 | 92% | 79 min |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 4 | 0 | 100% | 0 | ||
| NWS Morristown, TN: severe thunderstorm warnings | 185 | 150 | 19% | 242 | 85% | 18 min |
| NWS Morristown, TN: flash flood warnings | 51 | 27 | 47% | 66 | 82% | 91 min |
| NWS Blacksburg, VA: tornado warnings | 36 | 5 | 86% | 9 | 44% | 14 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 272 | 224 | 18% | 947 | 73% | 23 min |
| NWS Blacksburg, VA: flash flood warnings | 25 | 9 | 64% | 21 | 81% | 74 min |
| NWS Raleigh, NC: tornado warnings | 33 | 2 | 94% | 6 | 67% | 4 min |
| NWS Raleigh, NC: severe thunderstorm warnings | 269 | 187 | 30% | 524 | 88% | 21 min |
| NWS Raleigh, NC: flash flood warnings | 41 | 23 | 44% | 55 | 95% | 61 min |
| NWS Newport/Morehead City, NC: tornado warnings | 11 | 1 | 91% | 2 | 50% | 10 min |
| NWS Newport/Morehead City, NC: severe thunderstorm warnings | 90 | 57 | 37% | 136 | 82% | 22 min |
| NWS Newport/Morehead City, NC: flash flood warnings | 9 | 3 | 67% | 5 | 100% | 75 min |
| NWS Wilmington, NC: tornado warnings | 15 | 2 | 87% | 3 | 67% | 5 min |
| NWS Wilmington, NC: severe thunderstorm warnings | 89 | 36 | 60% | 95 | 83% | 24 min |
| NWS Wilmington, NC: flash flood warnings | 14 | 8 | 43% | 20 | 90% | 62 min |
| NWS Wakefield, VA: tornado warnings | 52 | 6 | 88% | 12 | 75% | 15 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 267 | 196 | 27% | 417 | 92% | 21 min |
| NWS Wakefield, VA: flash flood warnings | 33 | 21 | 36% | 41 | 100% | 37 min |
| NWS Greenville-Spartanburg, SC: tornado warnings | 38 | 5 | 87% | 15 | 40% | 24 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 324 | 170 | 48% | 455 | 68% | 18 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 32 | 10 | 69% | 30 | 73% | 126 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
5,760 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 County303
- Wake County277
- Pender County245
- Johnston County233
- Dare County216
- Durham County212
- Harnett County207
- Chatham County205
- Franklin County202
- Brunswick County202
- Hyde County195
- Nash County190
- Randolph County189
- Guilford County189
- Mecklenburg County189
- Onslow County187
- Carteret County186
- Orange County185
- Moore County184
- Halifax County182
- Burke County181
- Alamance County181
- Currituck County178
- Rutherford County177
- Wilson County176
- Lee County175
- Cleveland County175
- Caldwell County174
- Granville County174
- Warren County174
- Gaston County173
- Edgecombe County171
- Iredell County171
- Union County170
- Cabarrus County166
- McDowell County165
- Cumberland County165
- Davidson County165
- Vance County163
- Catawba County163
60 more counties
- Montgomery County162
- Wayne County160
- Rowan County160
- Hoke County159
- Wilkes County158
- Richmond County155
- Forsyth County155
- Sampson County155
- Craven County153
- Lincoln County153
- Surry County151
- Beaufort County149
- Rockingham County148
- Bladen County147
- Caswell County146
- Henderson County145
- Stanly County145
- Polk County144
- Anson County142
- Yadkin County139
- Alexander County139
- Columbus County138
- Northampton County138
- Jones County137
- Person County136
- Hertford County136
- Stokes County130
- Scotland County130
- Transylvania County129
- Gates County127
- Robeson County126
- Duplin County124
- Buncombe County123
- Washington County123
- Avery County122
- Camden County122
- Pasquotank County122
- Davie County122
- Pitt County121
- Martin County119
- Bertie County119
- Chowan County118
- Ashe County115
- Pamlico County115
- Alleghany County115
- Perquimans County115
- Watauga County112
- Haywood County111
- Macon County110
- Tyrrell County109
- Lenoir County107
- Jackson County105
- Swain County101
- Greene County99
- Cherokee County94
- Madison County94
- Graham County92
- Mitchell County92
- Yancey County82
- Clay County80
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20212023
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.