Alert archive / North Carolina / Iredell County
Weather alerts in Iredell County, North Carolina, 2017
159 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Iredell County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 159
- Warnings
- 48
- Watches
- 19
- Advisories
- 33
- Busiest month
- March27 alerts
- Busiest day
- April 24, 20179 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 4 tornado warnings covering Iredell County in 2017 had a tornado report inside them.
Iredell County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 30 | 26 | 13% | 26 | 69% | 14 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 35 | 12 | 66% | 46 | 93% | 19 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 286 | 227 | 21% | 736 | 76% | 20 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 23 | 14 | 39% | 50 | 64% | 48 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 5, 3:58 AM EST | Winter Storm Watch | GSP | 11 hr |
| Jan 5, 3:15 PM EST | Winter Storm Warning | GSP | 46 hr |
| Jan 6, 8:56 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 7, 3:18 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 7, 3:42 AM EST | Wind Chill Advisory | GSP | 32 hr |
| Jan 7, 3:04 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Jan 8, 2:55 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Jan 9, 2:48 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Jan 21, 3:31 AM EST | Dense Fog Advisory | GSP | 8 hr |
| Feb 8, 4:11 AM EST | Dense Fog Advisory | GSP | 6 hr |
| Feb 23, 2:55 AM EST | Dense Fog Advisory | GSP | 7 hr |
| Feb 25, 12:29 PM EST | Special Weather Statement | GSP | 31 min |
| Mar 1, 2:07 PM EST | Mesoscale Discussion | SPC | 113 min |
| Mar 1, 3:02 PM EST | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 1, 5:07 PM EST | Tornado Warning | GSP | 38 min |
| Mar 1, 5:40 PM EST | Severe Thunderstorm Warning | GSP | 35 min |
| Mar 1, 6:19 PM EST | Severe Thunderstorm Warning | GSP | 56 min |
| Mar 2, 3:13 PM EST | Freeze Watch | GSP | 13 hr |
| Mar 3, 4:22 AM EST | Freeze Warning | GSP | 29 hr |
| Mar 3, 2:57 PM EST | Freeze Watch | GSP | 18 hr |
| Mar 4, 9:10 AM EST | Freeze Warning | GSP | 24 hr |
| Mar 9, 3:47 PM EST | Freeze Watch | GSP | 12 hr |
| Mar 10, 3:53 AM EST | Freeze Warning | GSP | 29 hr |
| Mar 10, 3:33 PM EST | Winter Weather Advisory | GSP | 42 hr |
| Mar 11, 3:20 PM EST | Freeze Watch | GSP | 12 hr |
| Mar 12, 4:06 AM EDT | Freeze Warning | GSP | 30 hr |
| Mar 12, 3:47 PM EDT | Freeze Watch | GSP | 12 hr |
| Mar 13, 3:53 AM EDT | Freeze Watch | GSP | 24 hr |
| Mar 14, 3:25 AM EDT | Freeze Watch | GSP | 25 hr |
| Mar 14, 3:25 AM EDT | Freeze Warning | GSP | 32 hr |
| Mar 15, 3:55 AM EDT | Freeze Warning | GSP | 31 hr |
| Mar 15, 9:59 PM EDT | Freeze Watch | GSP | 6 hr |
| Mar 16, 3:31 AM EDT | Freeze Warning | GSP | 30 hr |
| Mar 18, 3:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 19, 4:10 AM EDT | Freeze Warning | GSP | 29 hr |
| Mar 21, 9:13 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Mar 22, 3:50 AM EDT | Freeze Warning | GSP | 29 hr |
| Mar 31, 6:47 AM EDT | Special Weather Statement | GSP | 73 min |
| Mar 31, 7:55 AM EDT | Special Weather Statement | GSP | 65 min |
| Apr 3, 3:52 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Apr 5, 3:31 PM EDT | Wind Advisory | GSP | 52 hr |
| Apr 5, 11:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 6, 12:52 AM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Apr 6, 1:33 AM EDT | Special Weather Statement | GSP | 42 min |
| Apr 6, 3:25 PM EDT | Freeze Watch | GSP | 23 hr |
| Apr 7, 2:54 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 8, 2:37 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 20, 3:39 AM EDT | Dense Fog Advisory | GSP | 6 hr |
| Apr 21, 1:30 PM EDT | Special Weather Statement | GSP | 30 min |
| Apr 21, 2:07 PM EDT | Special Weather Statement | GSP | 23 min |
| Apr 21, 3:44 PM EDT | Special Weather Statement | GSP | 31 min |
| Apr 21, 4:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Apr 22, 2:57 PM EDT | Flood Watch | GSP | 61 hr |
| Apr 23, 8:11 PM EDT | Special Weather Statement | GSP | 2 hr |
| Apr 23, 8:24 PM EDT | Special Weather Statement | GSP | 111 min |
| Apr 23, 10:34 PM EDT | Special Weather Statement | GSP | 41 min |
| Apr 24, 3:24 AM EDT | Areal Flood Advisory | GSP | 3 hr |
| Apr 24, 6:33 AM EDT | Areal Flood Warning | GSP | 12 hr |
| Apr 24, 7:28 AM EDT | Areal Flood Advisory | GSP | 12 hr |
| Apr 24, 9:16 AM EDT | Areal Flood Advisory | GSP | 12 hr |
| Apr 24, 2:42 PM EDT | Areal Flood Advisory | GSP | 9 hr |
| Apr 24, 7:17 PM EDT | Areal Flood Advisory | GSP | 118 min |
| May 1, 3:46 PM EDT | Severe Thunderstorm Warning | GSP | 44 min |
| May 1, 4:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 1, 4:38 PM EDT | Special Weather Statement | GSP | 37 min |
| May 9, 8:25 PM EDT | Special Weather Statement | GSP | 50 min |
| May 11, 4:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 2:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 1:54 PM EDT | Flash Flood Watch | GSP | 36 hr |
| May 22, 4:24 PM EDT | Areal Flood Advisory | GSP | 111 min |
| May 24, 4:23 AM EDT | Flash Flood Watch | GSP | 18 hr |
| May 24, 10:04 AM EDT | Tornado Watch | SPC | 11 hr |
| May 24, 3:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 24, 3:11 PM EDT | Special Weather Statement | GSP | 34 min |
| May 24, 3:41 PM EDT | Tornado Warning | GSP | 34 min |
| May 24, 4:12 PM EDT | Tornado Warning | GSP | 18 min |
| May 24, 4:15 PM EDT | Tornado Warning | GSP | 31 min |
| May 24, 5:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 27, 6:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 27, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 27, 10:17 PM EDT | Severe Thunderstorm Warning | GSP | 73 min |
| May 27, 10:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 28, 2:05 AM EDT | Severe Thunderstorm Warning | GSP | 70 min |
| May 28, 2:17 AM EDT | Mesoscale Discussion | SPC | 58 min |
| May 29, 6:05 PM EDT | Severe Thunderstorm Warning | GSP | 40 min |
| Jun 4, 3:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 4, 3:56 PM EDT | Special Weather Statement | GSP | 49 min |
| Jun 4, 4:30 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| Jun 13, 3:24 PM EDT | Severe Thunderstorm Warning | GSP | 51 min |
| Jun 13, 4:08 PM EDT | Severe Thunderstorm Warning | GSP | 37 min |
| Jun 13, 4:25 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Jun 13, 4:56 PM EDT | Severe Thunderstorm Warning | GSP | 49 min |
| Jun 13, 5:29 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Jun 14, 1:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 1:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 18, 8:40 PM EDT | Special Weather Statement | GSP | 50 min |
| Jun 18, 9:10 PM EDT | Special Weather Statement | GSP | 65 min |
| Jun 19, 6:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 8:19 PM EDT | Special Weather Statement | GSP | 41 min |
| Jun 20, 12:47 AM EDT | Areal Flood Advisory | GSP | 3 hr |
| Jul 1, 1:44 PM EDT | Severe Thunderstorm Warning | GSP | 61 min |
| Jul 1, 2:14 PM EDT | Special Weather Statement | GSP | 61 min |
| Jul 1, 2:52 PM EDT | Special Weather Statement | GSP | 23 min |
| Jul 1, 2:56 PM EDT | Special Weather Statement | GSP | 19 min |
| Jul 1, 4:07 PM EDT | Special Weather Statement | GSP | 23 min |
| Jul 1, 4:34 PM EDT | Special Weather Statement | GSP | 26 min |
| Jul 1, 5:02 PM EDT | Special Weather Statement | GSP | 28 min |
| Jul 5, 4:39 PM EDT | Special Weather Statement | GSP | 51 min |
| Jul 6, 5:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 6, 5:28 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| Jul 8, 5:23 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| Jul 9, 3:26 AM EDT | Dense Fog Advisory | GSP | 7 hr |
| Jul 13, 4:28 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jul 15, 1:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 15, 4:27 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jul 15, 5:05 PM EDT | Severe Thunderstorm Warning | GSP | 40 min |
| Jul 17, 4:43 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jul 17, 5:23 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| Jul 18, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 19, 4:05 PM EDT | Special Weather Statement | GSP | 25 min |
| Jul 23, 11:36 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 2:40 PM EDT | Severe Thunderstorm Warning | GSP | 17 min |
| Jul 23, 2:59 PM EDT | Special Weather Statement | GSP | 31 min |
| Jul 27, 4:49 PM EDT | Special Weather Statement | GSP | 26 min |
| Jul 28, 4:26 PM EDT | Special Weather Statement | GSP | 34 min |
| Jul 28, 4:56 PM EDT | Special Weather Statement | GSP | 34 min |
| Jul 28, 5:12 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Aug 4, 8:45 PM EDT | Special Weather Statement | GSP | 45 min |
| Aug 15, 7:52 AM EDT | Dense Fog Advisory | GSP | 92 min |
| Aug 15, 3:12 PM EDT | Special Weather Statement | GSP | 33 min |
| Sep 1, 1:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Sep 1, 1:49 PM EDT | Tornado Watch | SPC | 8 hr |
| Sep 1, 4:53 PM EDT | Special Weather Statement | GSP | 52 min |
| Sep 1, 5:16 PM EDT | Severe Thunderstorm Warning | GSP | 44 min |
| Sep 1, 5:58 PM EDT | Special Weather Statement | GSP | 62 min |
| Sep 1, 6:49 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Sep 1, 7:15 PM EDT | Areal Flood Advisory | GSP | 3 hr |
| Sep 1, 7:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 1, 7:51 PM EDT | Flash Flood Warning | GSP | 2 hr |
| Sep 5, 3:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Sep 10, 3:34 PM EDT | Wind Advisory | GSP | 36 hr |
| Oct 15, 5:08 AM EDT | Dense Fog Advisory | GSP | 5 hr |
| Oct 17, 3:35 AM EDT | Frost Advisory | GSP | 29 hr |
| Oct 23, 1:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Oct 23, 2:00 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 23, 4:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Oct 23, 5:14 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Oct 23, 5:18 PM EDT | Severe Thunderstorm Warning | GSP | 11 min |
| Oct 23, 5:44 PM EDT | Areal Flood Advisory | GSP | 6 hr |
| Oct 23, 5:48 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Oct 25, 3:13 AM EDT | Frost Advisory | GSP | 30 hr |
| Oct 26, 2:54 PM EDT | Frost Advisory | GSP | 18 hr |
| Oct 29, 4:29 AM EDT | Freeze Warning | GSP | 30 hr |
| Nov 13, 5:15 AM EST | Dense Fog Advisory | GSP | 6 hr |
| Nov 22, 3:50 AM EST | Dense Fog Advisory | GSP | 5 hr |
| Dec 7, 4:42 PM EST | Winter Weather Advisory | GSP | 43 hr |
| Dec 7, 9:47 PM EST | Winter Storm Warning | GSP | 38 hr |
| Dec 9, 2:45 PM EST | Winter Weather Advisory | GSP | 19 hr |
| Dec 19, 5:02 AM EST | Dense Fog Advisory | GSP | 5 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 | 30 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 33 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 9 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 10 |
| Freeze Watch | 9 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.