Alert archive / North Carolina / Forsyth County
Weather alerts in Forsyth County, North Carolina, 2024
109 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Forsyth County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 109
- Warnings
- 22
- Watches
- 15
- Advisories
- 30
- Busiest month
- August27 alerts
- Busiest day
- January 9, 20247 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Forsyth County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 11 | 0% | 15 | 93% | 21 min |
| Flash flood warnings | 4 | 4 | 0% | 1 | 0% |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| 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 |
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, 3:59 AM EST | Winter Weather Advisory | RAH | 29 hr |
| Jan 7, 2:47 AM EST | Dense Fog Advisory | RAH | 3 hr |
| Jan 8, 4:03 AM EST | Wind Advisory | RAH | 50 hr |
| Jan 8, 2:20 PM EST | Flood Watch | RAH | 30 hr |
| Jan 9, 11:41 AM EST | Tornado Watch | SPC | 6 hr |
| Jan 9, 1:22 PM EST | Severe Thunderstorm Warning | RAH | 38 min |
| Jan 9, 1:32 PM EST | Mesoscale Discussion | SPC | 58 min |
| Jan 9, 1:58 PM EST | Severe Thunderstorm Warning | RAH | 62 min |
| Jan 9, 1:59 PM EST | Areal Flood Advisory | RAH | 3 hr |
| Jan 9, 2:28 PM EST | Flash Flood Warning | RAH | 5 hr |
| Jan 9, 4:52 PM EST | Areal Flood Advisory | RAH | 3 hr |
| Jan 12, 3:32 AM EST | Wind Advisory | RAH | 20 hr |
| Jan 27, 10:44 PM EST | Areal Flood Advisory | RAH | 3 hr |
| Jan 28, 3:04 AM EST | Areal Flood Advisory | RAH | 5 hr |
| Feb 12, 10:03 AM EST | Wind Advisory | RAH | 26 hr |
| Feb 28, 4:21 PM EST | Special Weather Statement | RAH | 39 min |
| Feb 28, 4:38 PM EST | Severe Thunderstorm Warning | RAH | 52 min |
| Mar 3, 3:02 AM EST | Dense Fog Advisory | RAH | 8 hr |
| Mar 20, 8:30 AM EDT | Red Flag Warning | RAH | 11 hr |
| Mar 24, 3:08 AM EDT | Freeze Warning | RAH | 30 hr |
| Apr 5, 3:01 AM EDT | Frost Advisory | RAH | 29 hr |
| Apr 6, 2:41 AM EDT | Freeze Warning | RAH | 30 hr |
| Apr 11, 6:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 11, 6:43 PM EDT | Tornado Watch | SPC | 4 hr |
| Apr 11, 7:52 PM EDT | Severe Thunderstorm Warning | RAH | 38 min |
| Apr 11, 8:18 PM EDT | Severe Thunderstorm Warning | RAH | 42 min |
| Apr 11, 8:51 PM EDT | Severe Thunderstorm Warning | RAH | 39 min |
| Apr 11, 8:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 19, 2:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| May 6, 3:21 PM EDT | Special Weather Statement | RAH | 54 min |
| May 6, 11:34 PM EDT | Special Weather Statement | RAH | 56 min |
| May 7, 5:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 9, 1:29 AM EDT | Special Weather Statement | RAH | 61 min |
| May 18, 4:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 18, 5:04 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| May 18, 5:36 PM EDT | Special Weather Statement | RAH | 39 min |
| May 26, 5:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 26, 6:08 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 26, 8:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| May 26, 9:01 PM EDT | Special Weather Statement | RAH | 44 min |
| May 26, 9:23 PM EDT | Severe Thunderstorm Warning | RAH | 37 min |
| Jun 6, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 9, 7:03 PM EDT | Special Weather Statement | RAH | 27 min |
| Jun 9, 7:33 PM EDT | Special Weather Statement | RAH | 57 min |
| Jun 26, 8:55 PM EDT | Special Weather Statement | RAH | 50 min |
| Jul 4, 1:59 PM EDT | Heat Advisory | RAH | 30 hr |
| Jul 4, 6:36 PM EDT | Special Weather Statement | RAH | 54 min |
| Jul 6, 12:50 AM EDT | Special Weather Statement | RAH | 40 min |
| Jul 8, 3:23 PM EDT | Heat Advisory | RAH | 29 hr |
| Jul 9, 8:09 PM EDT | Heat Advisory | RAH | 24 hr |
| Jul 16, 3:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 18, 11:30 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 4:09 PM EDT | Special Weather Statement | RAH | 66 min |
| Jul 21, 7:02 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 23, 3:57 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 5:49 PM EDT | Special Weather Statement | RAH | 11 min |
| Jul 23, 6:03 PM EDT | Areal Flood Advisory | RAH | 117 min |
| Jul 24, 4:15 AM EDT | Flood Watch | RAH | 63 hr |
| Aug 2, 4:13 PM EDT | Severe Thunderstorm Warning | RAH | 47 min |
| Aug 3, 3:30 AM EDT | Flood Watch | RAH | 21 hr |
| Aug 3, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 3, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 3, 5:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 3, 6:37 PM EDT | Special Weather Statement | RAH | 38 min |
| Aug 3, 6:55 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Aug 5, 3:34 PM EDT | Flood Watch | RAH | 4 days |
| Aug 8, 4:13 AM EDT | Flash Flood Warning | RAH | 6 hr |
| Aug 8, 10:17 AM EDT | Flash Flood Warning | RAH | 8 hr |
| Aug 8, 5:51 PM EDT | Areal Flood Warning | RAH | 12 hr |
| Aug 8, 6:05 PM EDT | Areal Flood Warning | RAH | 12 hr |
| Aug 9, 10:19 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Aug 16, 9:40 PM EDT | Areal Flood Advisory | RAH | 2 hr |
| Aug 18, 12:08 AM EDT | Special Weather Statement | RAH | 52 min |
| Aug 18, 2:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 3:28 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 3:38 PM EDT | Special Weather Statement | RAH | 52 min |
| Aug 18, 5:18 PM EDT | Special Weather Statement | RAH | 57 min |
| Aug 18, 5:30 PM EDT | Severe Thunderstorm Warning | RAH | 45 min |
| Aug 18, 6:18 PM EDT | Special Weather Statement | RAH | 57 min |
| Aug 19, 3:05 PM EDT | Special Weather Statement | RAH | 55 min |
| Aug 30, 2:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 4:38 PM EDT | Areal Flood Advisory | RAH | 13 min |
| Aug 30, 4:51 PM EDT | Flash Flood Warning | RAH | 2 hr |
| Aug 30, 5:35 PM EDT | Special Weather Statement | RAH | 25 min |
| Aug 30, 5:43 PM EDT | Severe Thunderstorm Warning | RAH | 62 min |
| Aug 31, 10:57 PM EDT | Special Weather Statement | RAH | 63 min |
| Aug 31, 11:56 PM EDT | Special Weather Statement | RAH | 64 min |
| Sep 1, 12:01 AM EDT | Areal Flood Advisory | RAH | 3 hr |
| Sep 15, 3:22 PM EDT | Flood Watch | RAH | 37 hr |
| Sep 24, 3:32 PM EDT | Flood Watch | RAH | 16 hr |
| Sep 25, 12:35 AM EDT | Special Weather Statement | RAH | 40 min |
| Sep 25, 3:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 26, 2:32 PM EDT | Wind Advisory | RAH | 27 hr |
| Sep 26, 3:05 PM EDT | Flood Watch | RAH | 27 hr |
| Sep 27, 8:02 AM EDT | Tornado Watch | SPC | 12 hr |
| Sep 27, 2:26 PM EDT | Areal Flood Warning | RAH | 30 hr |
| Oct 16, 3:43 AM EDT | Frost Advisory | RAH | 29 hr |
| Oct 17, 2:33 PM EDT | Frost Advisory | RAH | 18 hr |
| Oct 18, 8:07 PM EDT | Frost Advisory | RAH | 12 hr |
| Nov 8, 1:07 AM EST | Dense Fog Advisory | RAH | 8 hr |
| Nov 12, 2:41 PM EST | Frost Advisory | RAH | 17 hr |
| Nov 16, 2:21 PM EST | Frost Advisory | RAH | 18 hr |
| Nov 20, 3:07 PM EST | Freeze Watch | RAH | 24 hr |
| Nov 21, 2:59 PM EST | Freeze Warning | RAH | 18 hr |
| Dec 18, 3:06 AM EST | Dense Fog Advisory | RAH | 7 hr |
| Dec 29, 9:43 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Dec 29, 10:21 AM EST | Severe Thunderstorm Warning | RAH | 39 min |
| Dec 29, 10:35 AM EST | Mesoscale Discussion | SPC | 85 min |
| Dec 31, 6:52 PM EST | Special Weather Statement | RAH | 38 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 | 11 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 4 |
| Flood Watch | 7 |
| Areal Flood Advisory | 12 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.