Alert archive / North Carolina / Sampson County
Weather alerts in Sampson County, North Carolina, 2021
122 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sampson County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 122
- Warnings
- 23
- Watches
- 12
- Advisories
- 28
- Busiest month
- July31 alerts
- Busiest day
- August 1, 20217 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Sampson County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 7 | 56% | 3 | 67% | 18 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 0% |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Raleigh, NC: tornado warnings | 22 | 4 | 82% | 4 | 100% | 5 min |
| NWS Raleigh, NC: severe thunderstorm warnings | 138 | 84 | 39% | 237 | 81% | 19 min |
| NWS Raleigh, NC: flash flood warnings | 27 | 14 | 48% | 36 | 67% | 100 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
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 13, 3:45 AM EST | Freezing Fog Advisory | RAH | 7 hr |
| Jan 16, 1:27 AM EST | Dense Fog Advisory | RAH | 8 hr |
| Feb 17, 6:06 AM EST | Areal Flood Warning | RAH | 4 days |
| Feb 17, 3:01 PM EST | Flash Flood Watch | RAH | 40 hr |
| Feb 21, 4:24 PM EST | Areal Flood Warning | RAH | 53 hr |
| Feb 22, 2:35 PM EST | Special Weather Statement | RAH | 55 min |
| Feb 22, 11:53 PM EST | Dense Fog Advisory | RAH | 9 hr |
| Mar 18, 5:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Mar 18, 10:12 PM EDT | Special Weather Statement | RAH | 63 min |
| Mar 27, 6:39 AM EDT | Dense Fog Advisory | RAH | 3 hr |
| Mar 27, 5:29 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 27, 5:42 PM EDT | Severe Thunderstorm Warning | RAH | 48 min |
| Mar 27, 6:51 PM EDT | Severe Thunderstorm Warning | RAH | 54 min |
| Mar 27, 7:06 PM EDT | Severe Thunderstorm Warning | RAH | 69 min |
| Mar 27, 7:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Mar 28, 3:18 PM EDT | Special Weather Statement | RAH | 57 min |
| Mar 28, 3:24 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 28, 3:59 PM EDT | Special Weather Statement | RAH | 61 min |
| Mar 31, 2:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Mar 31, 2:34 PM EDT | Freeze Watch | RAH | 13 hr |
| Mar 31, 4:21 PM EDT | Special Weather Statement | RAH | 54 min |
| Mar 31, 5:38 PM EDT | Special Weather Statement | RAH | 52 min |
| Apr 1, 3:49 AM EDT | Freeze Warning | RAH | 29 hr |
| Apr 2, 9:02 AM EDT | Hard Freeze Warning | RAH | 24 hr |
| Apr 3, 9:43 AM EDT | Frost Advisory | RAH | 23 hr |
| Apr 10, 11:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 11, 12:32 AM EDT | Special Weather Statement | RAH | 58 min |
| Apr 21, 10:58 AM EDT | Frost Advisory | RAH | 21 hr |
| Apr 22, 10:45 AM EDT | Frost Advisory | RAH | 22 hr |
| Apr 29, 2:26 PM EDT | Fire Weather Watch | RAH | 13 hr |
| Apr 30, 3:25 AM EDT | Red Flag Warning | RAH | 16 hr |
| May 3, 12:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| May 3, 12:57 PM EDT | Special Weather Statement | RAH | 63 min |
| May 4, 4:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 4, 4:56 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 7, 9:04 AM EDT | Severe Thunderstorm Warning | RAH | 41 min |
| May 7, 7:13 PM EDT | Special Weather Statement | RAH | 62 min |
| May 7, 7:43 PM EDT | Special Weather Statement | RAH | 62 min |
| May 10, 12:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 10, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 10, 9:58 PM EDT | Severe Thunderstorm Warning | RAH | 60 min |
| May 28, 3:00 PM EDT | Special Weather Statement | RAH | 60 min |
| May 29, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 2, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 2, 6:04 PM EDT | Special Weather Statement | RAH | 56 min |
| Jun 3, 3:23 AM EDT | Flash Flood Watch | RAH | 24 hr |
| Jun 3, 2:19 PM EDT | Areal Flood Advisory | RAH | 4 hr |
| Jun 3, 5:57 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jun 10, 2:28 PM EDT | Special Weather Statement | RAH | 62 min |
| Jun 14, 7:05 PM EDT | Special Weather Statement | RAH | 55 min |
| Jun 14, 9:48 PM EDT | Special Weather Statement | RAH | 57 min |
| Jun 14, 10:45 PM EDT | Special Weather Statement | RAH | 60 min |
| Jun 14, 11:46 PM EDT | Special Weather Statement | RAH | 74 min |
| Jun 15, 12:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 20, 1:51 PM EDT | Special Weather Statement | RAH | 39 min |
| Jun 20, 2:07 PM EDT | Severe Thunderstorm Warning | RAH | 38 min |
| Jun 20, 2:17 PM EDT | Areal Flood Advisory | RAH | 58 min |
| Jun 20, 2:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 20, 9:21 PM EDT | Special Weather Statement | RAH | 54 min |
| Jun 22, 12:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 5:33 PM EDT | Special Weather Statement | RAH | 57 min |
| Jul 1, 9:38 PM EDT | Severe Thunderstorm Warning | RAH | 52 min |
| Jul 1, 10:35 PM EDT | Special Weather Statement | RAH | 55 min |
| Jul 2, 10:58 AM EDT | Special Weather Statement | RAH | 32 min |
| Jul 7, 3:01 PM EDT | Flash Flood Watch | RAH | 27 hr |
| Jul 7, 3:33 PM EDT | Special Weather Statement | RAH | 42 min |
| Jul 8, 7:09 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 8:35 AM EDT | Tornado Watch | SPC | 6 hr |
| Jul 8, 8:52 AM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 8, 9:57 AM EDT | Special Weather Statement | RAH | 78 min |
| Jul 8, 10:45 AM EDT | Special Weather Statement | RAH | 90 min |
| Jul 9, 5:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 9, 5:50 PM EDT | Severe Thunderstorm Warning | RAH | 55 min |
| Jul 9, 6:11 PM EDT | Special Weather Statement | RAH | 64 min |
| Jul 9, 6:36 PM EDT | Severe Thunderstorm Warning | RAH | 39 min |
| Jul 9, 7:07 PM EDT | Severe Thunderstorm Warning | RAH | 38 min |
| Jul 9, 7:11 PM EDT | Severe Thunderstorm Warning | RAH | 49 min |
| Jul 17, 6:57 PM EDT | Special Weather Statement | RAH | 63 min |
| Jul 18, 5:46 PM EDT | Special Weather Statement | RAH | 59 min |
| Jul 18, 6:31 PM EDT | Special Weather Statement | RAH | 59 min |
| Jul 19, 3:28 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 19, 4:49 PM EDT | Areal Flood Advisory | RAH | 85 min |
| Jul 19, 5:28 PM EDT | Flash Flood Warning | RAH | 3 hr |
| Jul 27, 3:47 AM EDT | Special Weather Statement | RAH | 58 min |
| Jul 28, 12:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 28, 2:19 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 28, 4:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 28, 5:45 PM EDT | Severe Thunderstorm Warning | RAH | 45 min |
| Jul 28, 6:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 28, 6:27 PM EDT | Severe Thunderstorm Warning | RAH | 27 min |
| Jul 28, 8:17 PM EDT | Special Weather Statement | RAH | 58 min |
| Jul 29, 3:39 PM EDT | Heat Advisory | RAH | 27 hr |
| Aug 1, 11:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 1, 12:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 1, 1:31 PM EDT | Severe Thunderstorm Warning | RAH | 44 min |
| Aug 1, 2:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 1, 3:51 PM EDT | Special Weather Statement | RAH | 54 min |
| Aug 1, 4:53 PM EDT | Special Weather Statement | RAH | 67 min |
| Aug 1, 5:09 PM EDT | Special Weather Statement | RAH | 36 min |
| Aug 7, 6:21 PM EDT | Flash Flood Warning | RAH | 2 hr |
| Aug 7, 9:26 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Aug 8, 2:02 AM EDT | Dense Fog Advisory | RAH | 7 hr |
| Aug 10, 2:41 PM EDT | Heat Advisory | RAH | 28 hr |
| Aug 11, 3:38 PM EDT | Heat Advisory | RAH | 27 hr |
| Aug 12, 3:30 PM EDT | Heat Advisory | RAH | 28 hr |
| Aug 14, 4:01 AM EDT | Heat Advisory | RAH | 14 hr |
| Aug 18, 10:54 AM EDT | Special Weather Statement | RAH | 66 min |
| Aug 19, 11:42 PM EDT | Special Weather Statement | RAH | 33 min |
| Aug 20, 10:21 PM EDT | Special Weather Statement | RAH | 54 min |
| Aug 23, 3:53 AM EDT | Dense Fog Advisory | RAH | 5 hr |
| Aug 25, 6:49 PM EDT | Special Weather Statement | RAH | 26 min |
| Sep 1, 1:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 8, 5:34 PM EDT | Severe Thunderstorm Warning | RAH | 41 min |
| Sep 8, 6:12 PM EDT | Severe Thunderstorm Warning | RAH | 37 min |
| Sep 22, 12:12 PM EDT | Areal Flood Advisory | RAH | 2 hr |
| Oct 9, 8:46 AM EDT | Areal Flood Advisory | RAH | 4 hr |
| Nov 13, 3:51 AM EST | Frost Advisory | RAH | 29 hr |
| Nov 15, 3:06 AM EST | Frost Advisory | RAH | 29 hr |
| Dec 6, 4:59 AM EST | Dense Fog Advisory | RAH | 5 hr |
| Dec 11, 8:33 PM EST | Special Weather Statement | RAH | 42 min |
| Dec 18, 3:28 AM EST | Dense Fog Advisory | RAH | 6 hr |
| Dec 25, 3:23 AM EST | Wind Advisory | RAH | 13 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 16 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 39 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 9 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 1 |
| Hard Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.