Alert archive / North Carolina / Onslow County
Weather alerts in Onslow County, North Carolina, 2019
152 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Onslow County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 152
- Warnings
- 39
- Watches
- 14
- Advisories
- 23
- Busiest month
- September41 alerts
- Busiest day
- September 5, 201918 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
4 of 13 tornado warnings covering Onslow County in 2019 had a tornado report inside them; 5 of 5 tornado reports fell inside a warning, on average 30 minutes after it went out.
Onslow County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 13 | 4 | 69% | 5 | 100% | 30 min |
| Severe thunderstorm warnings | 18 | 11 | 39% | 7 | 100% | 18 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Newport/Morehead City, NC: tornado warnings | 28 | 10 | 64% | 12 | 100% | 21 min |
| NWS Newport/Morehead City, NC: severe thunderstorm warnings | 94 | 57 | 39% | 144 | 88% | 24 min |
| NWS Newport/Morehead City, NC: flash flood warnings | 7 | 3 | 57% | 4 | 100% | 189 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 20, 6:00 AM EST | Severe Thunderstorm Warning | MHX | 45 min |
| Feb 12, 9:44 PM EST | Special Weather Statement | MHX | 46 min |
| Mar 3, 9:37 PM EST | Special Weather Statement | MHX | 38 min |
| Mar 3, 10:07 PM EST | Special Weather Statement | MHX | 38 min |
| Apr 15, 2:18 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Apr 15, 2:37 AM EDT | Special Weather Statement | MHX | 53 min |
| Apr 15, 3:26 AM EDT | Severe Thunderstorm Warning | MHX | 64 min |
| Apr 18, 3:13 PM EDT | Wind Advisory | MHX | 40 hr |
| Apr 18, 4:00 PM EDT | Beach Hazards Statement | MHX | 52 hr |
| Apr 18, 4:00 PM EDT | High Surf Advisory | MHX | 53 hr |
| Apr 19, 12:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 1:17 PM EDT | Tornado Watch | SPC | 11 hr |
| Apr 19, 3:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 19, 5:34 PM EDT | Severe Thunderstorm Warning | MHX | 56 min |
| Apr 19, 6:11 PM EDT | Severe Thunderstorm Warning | MHX | 64 min |
| Apr 19, 6:27 PM EDT | Severe Thunderstorm Warning | MHX | 63 min |
| Apr 20, 8:37 PM EDT | Beach Hazards Statement | MHX | 23 hr |
| Apr 30, 4:41 AM EDT | Dense Fog Advisory | MHX | 3 hr |
| May 1, 6:37 AM EDT | Dense Fog Advisory | MHX | 55 min |
| May 5, 5:43 AM EDT | Beach Hazards Statement | MHX | 14 hr |
| May 5, 5:58 AM EDT | Special Weather Statement | MHX | 47 min |
| May 5, 6:41 AM EDT | Special Weather Statement | MHX | 49 min |
| May 12, 9:50 AM EDT | Special Weather Statement | MHX | 55 min |
| May 12, 3:13 PM EDT | Special Weather Statement | MHX | 47 min |
| May 12, 3:28 PM EDT | Severe Thunderstorm Warning | MHX | 47 min |
| May 16, 5:04 AM EDT | Beach Hazards Statement | MHX | 15 hr |
| May 16, 8:21 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| May 18, 4:25 AM EDT | Beach Hazards Statement | MHX | 40 hr |
| May 27, 3:55 AM EDT | Beach Hazards Statement | MHX | 16 hr |
| May 30, 8:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 30, 8:54 PM EDT | Severe Thunderstorm Warning | MHX | 51 min |
| May 31, 1:29 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 31, 2:44 PM EDT | Severe Thunderstorm Warning | MHX | 46 min |
| May 31, 5:29 PM EDT | Severe Thunderstorm Warning | MHX | 31 min |
| May 31, 7:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 31, 9:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 31, 9:56 PM EDT | Severe Thunderstorm Warning | MHX | 34 min |
| Jun 5, 5:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 20, 1:49 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 20, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 20, 7:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 3, 12:55 PM EDT | Special Weather Statement | MHX | 35 min |
| Jul 3, 1:13 PM EDT | Special Weather Statement | MHX | 32 min |
| Jul 3, 1:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 3, 1:53 PM EDT | Special Weather Statement | MHX | 37 min |
| Jul 3, 2:02 PM EDT | Severe Thunderstorm Warning | MHX | 43 min |
| Jul 4, 1:43 PM EDT | Special Weather Statement | MHX | 32 min |
| Jul 8, 1:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 8, 4:44 PM EDT | Special Weather Statement | MHX | 61 min |
| Jul 8, 7:22 PM EDT | Special Weather Statement | MHX | 23 min |
| Jul 8, 7:48 PM EDT | Special Weather Statement | MHX | 27 min |
| Jul 13, 9:55 AM EDT | Heat Advisory | MHX | 8 hr |
| Jul 13, 12:53 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 13, 1:02 PM EDT | Special Weather Statement | MHX | 28 min |
| Jul 13, 1:54 PM EDT | Special Weather Statement | MHX | 51 min |
| Jul 14, 4:04 AM EDT | Heat Advisory | MHX | 15 hr |
| Jul 15, 4:01 AM EDT | Heat Advisory | MHX | 15 hr |
| Jul 15, 3:24 PM EDT | Heat Advisory | MHX | 28 hr |
| Jul 16, 3:04 PM EDT | Heat Advisory | MHX | 28 hr |
| Jul 17, 3:02 PM EDT | Heat Advisory | MHX | 28 hr |
| Jul 18, 3:51 PM EDT | Heat Advisory | MHX | 27 hr |
| Jul 19, 3:10 AM EDT | Excessive Heat Watch | MHX | 12 hr |
| Jul 19, 3:23 PM EDT | Excessive Heat Warning | MHX | 29 hr |
| Jul 19, 3:23 PM EDT | Heat Advisory | MHX | 29 hr |
| Jul 20, 3:21 PM EDT | Heat Advisory | MHX | 29 hr |
| Jul 21, 11:20 AM EDT | Beach Hazards Statement | MHX | 9 hr |
| Jul 21, 3:25 PM EDT | Heat Advisory | MHX | 27 hr |
| Jul 21, 8:14 PM EDT | Beach Hazards Statement | MHX | 48 hr |
| Jul 23, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 3:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 6:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Aug 1, 3:21 PM EDT | Special Weather Statement | MHX | 24 min |
| Aug 1, 4:19 PM EDT | Special Weather Statement | MHX | 41 min |
| Aug 7, 12:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 7, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 7, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Aug 7, 4:14 PM EDT | Severe Thunderstorm Warning | MHX | 46 min |
| Aug 10, 1:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 10, 3:00 PM EDT | Severe Thunderstorm Warning | MHX | 45 min |
| Aug 10, 3:39 PM EDT | Severe Thunderstorm Warning | MHX | 51 min |
| Aug 10, 4:28 PM EDT | Severe Thunderstorm Warning | MHX | 15 min |
| Aug 14, 6:02 PM EDT | Special Weather Statement | MHX | 43 min |
| Aug 15, 1:57 PM EDT | Special Weather Statement | MHX | 33 min |
| Aug 15, 2:33 PM EDT | Special Weather Statement | MHX | 42 min |
| Aug 15, 4:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 22, 5:13 PM EDT | Severe Thunderstorm Warning | MHX | 32 min |
| Aug 22, 5:58 PM EDT | Areal Flood Advisory | MHX | 2 hr |
| Aug 22, 7:12 PM EDT | Severe Thunderstorm Warning | MHX | 48 min |
| Aug 23, 6:00 PM EDT | Mesoscale Discussion | SPC | 30 min |
| Aug 31, 7:56 PM EDT | Beach Hazards Statement | MHX | 48 hr |
| Sep 2, 8:07 PM EDT | Beach Hazards Statement | MHX | 48 hr |
| Sep 3, 11:02 AM EDT | Hurricane Watch | MHX | 24 hr |
| Sep 3, 11:26 AM EDT | Storm Surge Watch | MHX | 24 hr |
| Sep 4, 5:10 AM EDT | Flash Flood Watch | MHX | 56 hr |
| Sep 4, 11:08 AM EDT | Hurricane Warning | MHX | 54 hr |
| Sep 4, 11:08 AM EDT | Storm Surge Warning | MHX | 57 hr |
| Sep 4, 8:41 PM EDT | Beach Hazards Statement | MHX | 47 hr |
| Sep 5, 6:40 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 5, 7:13 AM EDT | Tornado Warning | MHX | 32 min |
| Sep 5, 7:28 AM EDT | Tornado Watch | SPC | 11 hr |
| Sep 5, 7:40 AM EDT | Tornado Warning | MHX | 50 min |
| Sep 5, 8:29 AM EDT | Tornado Warning | MHX | 46 min |
| Sep 5, 8:42 AM EDT | Tornado Warning | MHX | 48 min |
| Sep 5, 8:54 AM EDT | Tornado Warning | MHX | 51 min |
| Sep 5, 9:11 AM EDT | Tornado Warning | MHX | 49 min |
| Sep 5, 9:27 AM EDT | Tornado Warning | MHX | 33 min |
| Sep 5, 9:35 AM EDT | Tornado Warning | MHX | 40 min |
| Sep 5, 9:55 AM EDT | Tornado Warning | MHX | 50 min |
| Sep 5, 10:21 AM EDT | Tornado Warning | MHX | 39 min |
| Sep 5, 10:49 AM EDT | Tornado Warning | MHX | 41 min |
| Sep 5, 2:30 PM EDT | Flash Flood Warning | MHX | 5 hr |
| Sep 5, 4:18 PM EDT | Tornado Warning | MHX | 27 min |
| Sep 5, 4:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 5, 6:15 PM EDT | Tornado Watch | SPC | 12 hr |
| Sep 5, 8:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 5, 10:18 PM EDT | Flash Flood Warning | MHX | 8 hr |
| Sep 5, 11:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 7:36 PM EDT | River Flood Warning | MHX | 42 hr |
| Sep 9, 4:44 PM EDT | Special Weather Statement | MHX | 46 min |
| Sep 9, 5:04 PM EDT | Special Weather Statement | MHX | 26 min |
| Sep 9, 5:18 PM EDT | Severe Thunderstorm Warning | MHX | 27 min |
| Sep 9, 5:30 PM EDT | Areal Flood Advisory | MHX | 90 min |
| Sep 11, 4:27 AM EDT | Dense Fog Advisory | MHX | 6 hr |
| Sep 14, 8:23 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| Sep 15, 8:20 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| Sep 16, 8:13 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| Sep 17, 8:25 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| Sep 18, 8:10 PM EDT | Beach Hazards Statement | MHX | 48 hr |
| Sep 24, 8:47 PM EDT | Beach Hazards Statement | MHX | 23 hr |
| Sep 29, 8:40 PM EDT | Beach Hazards Statement | MHX | 23 hr |
| Sep 30, 7:48 PM EDT | Beach Hazards Statement | MHX | 4 days |
| Oct 6, 8:09 PM EDT | Beach Hazards Statement | MHX | 72 hr |
| Oct 19, 3:29 AM EDT | Wind Advisory | MHX | 36 hr |
| Oct 19, 4:18 PM EDT | High Surf Advisory | MHX | 28 hr |
| Oct 19, 7:25 PM EDT | Beach Hazards Statement | MHX | 25 hr |
| Oct 20, 2:17 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Oct 22, 5:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Oct 27, 8:23 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| Oct 30, 8:14 PM EDT | Beach Hazards Statement | MHX | 24 hr |
| Oct 31, 9:02 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 31, 9:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Nov 1, 12:06 AM EDT | Special Weather Statement | MHX | 54 min |
| Nov 1, 1:08 AM EDT | Tornado Warning | MHX | 52 min |
| Nov 3, 2:00 PM EST | Frost Advisory | MHX | 18 hr |
| Nov 6, 1:26 AM EST | Dense Fog Advisory | MHX | 3 hr |
| Nov 7, 3:06 AM EST | Freeze Watch | MHX | 23 hr |
| Nov 8, 2:32 AM EST | Freeze Warning | MHX | 29 hr |
| Nov 9, 2:34 PM EST | Frost Advisory | MHX | 17 hr |
| Nov 11, 2:52 PM EST | Freeze Watch | MHX | 12 hr |
| Nov 12, 3:17 AM EST | Freeze Warning | MHX | 29 hr |
| Nov 15, 3:00 AM EST | Wind Advisory | MHX | 45 hr |
| Dec 1, 1:44 PM EST | Special Weather Statement | MHX | 31 min |
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 | 18 |
| Tornado Warning | 13 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 26 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 10 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Tropical | |
| Hurricane Warning | 1 |
| Storm Surge Warning | 1 |
| Hurricane Watch | 1 |
| Storm Surge Watch | 1 |
| Coast and beach | |
| High Surf Advisory | 2 |
| Beach Hazards Statement | 24 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.