Alert archive / North Carolina / Forsyth County
Weather alerts in Forsyth County, North Carolina, 2022
155 weather alerts in 2022, 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 2022. Tap one for its archive.
- Alerts
- 155
- Warnings
- 29
- Watches
- 17
- Advisories
- 34
- Busiest month
- July35 alerts
- Busiest day
- May 27, 20229 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 Forsyth County in 2022 had a tornado report inside them.
Forsyth County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 13 | 7% | 23 | 70% | 22 min |
| Flash flood warnings | 6 | 3 | 50% | 5 | 100% | 72 min |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| 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 |
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 2, 2:47 PM EST | Flood Watch | RAH | 19 hr |
| Jan 2, 3:42 PM EST | Winter Weather Advisory | RAH | 24 hr |
| Jan 2, 8:53 PM EST | Wind Advisory | RAH | 18 hr |
| Jan 3, 4:19 AM EST | Special Weather Statement | RAH | 26 min |
| Jan 14, 3:07 AM EST | Winter Storm Watch | RAH | 25 hr |
| Jan 15, 3:43 AM EST | Winter Storm Warning | RAH | 41 hr |
| Jan 16, 4:02 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 16, 11:59 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 16, 9:06 PM EST | Winter Weather Advisory | RAH | 12 hr |
| Jan 19, 4:02 AM EST | Winter Storm Watch | RAH | 24 hr |
| Jan 28, 3:37 AM EST | Winter Weather Advisory | RAH | 30 hr |
| Feb 6, 10:01 PM EST | Winter Weather Advisory | RAH | 15 hr |
| Feb 17, 3:19 PM EST | Wind Advisory | RAH | 15 hr |
| Feb 18, 1:28 AM EST | Special Weather Statement | RAH | 77 min |
| Feb 25, 7:34 AM EST | Dense Fog Advisory | RAH | 4 hr |
| Mar 7, 3:37 AM EST | Wind Advisory | RAH | 15 hr |
| Mar 12, 3:58 AM EST | Special Weather Statement | RAH | 62 min |
| Mar 12, 4:13 AM EST | Areal Flood Advisory | RAH | 4 hr |
| Mar 23, 6:00 PM EDT | Special Weather Statement | RAH | 45 min |
| Mar 26, 10:03 AM EDT | Red Flag Warning | RAH | 10 hr |
| Mar 31, 8:51 AM EDT | Special Weather Statement | RAH | 54 min |
| Mar 31, 10:15 AM EDT | Special Weather Statement | RAH | 45 min |
| Apr 1, 3:43 AM EDT | Frost Advisory | RAH | 28 hr |
| Apr 3, 3:59 AM EDT | Frost Advisory | RAH | 29 hr |
| Apr 8, 2:18 PM EDT | Frost Advisory | RAH | 17 hr |
| Apr 9, 4:44 AM EDT | Frost Advisory | RAH | 28 hr |
| Apr 19, 3:25 AM EDT | Frost Advisory | RAH | 29 hr |
| Apr 26, 1:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 5:16 AM EDT | Dense Fog Advisory | RAH | 4 hr |
| May 1, 1:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 1, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 1, 2:54 PM EDT | Severe Thunderstorm Warning | RAH | 51 min |
| May 1, 3:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 1, 6:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 6, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 2:32 PM EDT | Tornado Watch | SPC | 9 hr |
| May 6, 3:14 PM EDT | Severe Thunderstorm Warning | RAH | 46 min |
| May 6, 3:19 PM EDT | Tornado Warning | RAH | 26 min |
| May 6, 5:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| May 6, 6:27 PM EDT | Tornado Warning | RAH | 33 min |
| May 6, 6:45 PM EDT | Tornado Warning | RAH | 19 min |
| May 6, 8:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 13, 6:34 PM EDT | Special Weather Statement | RAH | 56 min |
| May 14, 8:45 AM EDT | Special Weather Statement | RAH | 90 min |
| May 16, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 16, 12:46 PM EDT | Special Weather Statement | RAH | 59 min |
| May 16, 1:16 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 21, 3:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 21, 5:02 PM EDT | Special Weather Statement | RAH | 58 min |
| May 21, 5:37 PM EDT | Severe Thunderstorm Warning | RAH | 17 min |
| May 21, 5:56 PM EDT | Special Weather Statement | RAH | 64 min |
| May 26, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 26, 8:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 26, 9:15 PM EDT | Special Weather Statement | RAH | 60 min |
| May 27, 3:09 AM EDT | Severe Thunderstorm Warning | RAH | 36 min |
| May 27, 3:22 AM EDT | Tornado Warning | RAH | 23 min |
| May 27, 4:50 AM EDT | Special Weather Statement | RAH | 55 min |
| May 27, 6:21 AM EDT | Special Weather Statement | RAH | 24 min |
| May 27, 6:24 AM EDT | Tornado Watch | SPC | 8 hr |
| May 27, 6:43 AM EDT | Severe Thunderstorm Warning | RAH | 62 min |
| May 27, 7:02 AM EDT | Flash Flood Warning | RAH | 3 hr |
| Jun 1, 2:22 PM EDT | Special Weather Statement | RAH | 53 min |
| Jun 2, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 2, 6:14 PM EDT | Special Weather Statement | RAH | 46 min |
| Jun 2, 8:11 PM EDT | Special Weather Statement | RAH | 49 min |
| Jun 2, 8:51 PM EDT | Special Weather Statement | RAH | 39 min |
| Jun 13, 3:12 PM EDT | Heat Advisory | RAH | 26 hr |
| Jun 14, 1:44 AM EDT | Special Weather Statement | RAH | 61 min |
| Jun 14, 2:05 AM EDT | Severe Thunderstorm Warning | RAH | 55 min |
| Jun 14, 9:54 AM EDT | Special Weather Statement | RAH | 36 min |
| Jun 14, 2:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 10:58 AM EDT | Heat Advisory | RAH | 9 hr |
| Jun 16, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 3:01 PM EDT | Special Weather Statement | RAH | 44 min |
| Jun 16, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 16, 3:21 PM EDT | Severe Thunderstorm Warning | RAH | 39 min |
| Jun 16, 3:34 PM EDT | Special Weather Statement | RAH | 56 min |
| Jun 16, 4:16 PM EDT | Flash Flood Warning | RAH | 2 hr |
| Jun 16, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 17, 3:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 17, 3:37 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 17, 4:25 PM EDT | Severe Thunderstorm Warning | RAH | 50 min |
| Jun 17, 4:53 PM EDT | Severe Thunderstorm Warning | RAH | 52 min |
| Jun 27, 12:39 PM EDT | Special Weather Statement | RAH | 51 min |
| Jun 27, 1:34 PM EDT | Special Weather Statement | RAH | 56 min |
| Jul 1, 5:31 PM EDT | Special Weather Statement | RAH | 44 min |
| Jul 2, 7:37 PM EDT | Special Weather Statement | RAH | 53 min |
| Jul 2, 8:06 PM EDT | Areal Flood Advisory | RAH | 15 min |
| Jul 2, 8:20 PM EDT | Severe Thunderstorm Warning | RAH | 55 min |
| Jul 2, 8:21 PM EDT | Flash Flood Warning | RAH | 3 hr |
| Jul 2, 9:21 PM EDT | Special Weather Statement | RAH | 54 min |
| Jul 3, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 5:23 PM EDT | Special Weather Statement | RAH | 52 min |
| Jul 5, 5:45 PM EDT | Severe Thunderstorm Warning | RAH | 60 min |
| Jul 5, 5:58 PM EDT | Flash Flood Warning | RAH | 4 hr |
| Jul 5, 6:52 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 6, 4:41 PM EDT | Severe Thunderstorm Warning | RAH | 49 min |
| Jul 6, 5:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 6, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 7, 2:50 PM EDT | Special Weather Statement | RAH | 70 min |
| Jul 8, 2:58 PM EDT | Areal Flood Advisory | RAH | 107 min |
| Jul 8, 8:42 PM EDT | Special Weather Statement | RAH | 63 min |
| Jul 9, 3:29 PM EDT | Special Weather Statement | RAH | 31 min |
| Jul 13, 2:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 13, 4:29 PM EDT | Special Weather Statement | RAH | 46 min |
| Jul 13, 5:14 PM EDT | Special Weather Statement | RAH | 61 min |
| Jul 17, 2:35 PM EDT | Special Weather Statement | RAH | 55 min |
| Jul 17, 2:59 PM EDT | Special Weather Statement | RAH | 61 min |
| Jul 21, 12:16 PM EDT | Special Weather Statement | RAH | 59 min |
| Jul 21, 12:41 PM EDT | Severe Thunderstorm Warning | RAH | 49 min |
| Jul 21, 1:36 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 23, 11:21 PM EDT | Severe Thunderstorm Warning | RAH | 39 min |
| Jul 25, 1:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 25, 3:08 PM EDT | Special Weather Statement | RAH | 67 min |
| Jul 26, 1:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 26, 1:52 PM EDT | Special Weather Statement | RAH | 53 min |
| Jul 26, 2:37 PM EDT | Areal Flood Advisory | RAH | 91 min |
| Jul 27, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 7:15 PM EDT | Special Weather Statement | RAH | 30 min |
| Jul 29, 4:25 PM EDT | Special Weather Statement | RAH | 65 min |
| Aug 6, 4:05 PM EDT | Special Weather Statement | RAH | 25 min |
| Aug 7, 4:29 PM EDT | Flash Flood Warning | RAH | 38 min |
| Aug 7, 4:39 PM EDT | Special Weather Statement | RAH | 66 min |
| Aug 9, 3:29 PM EDT | Special Weather Statement | RAH | 61 min |
| Aug 9, 4:09 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Aug 21, 6:51 AM EDT | Special Weather Statement | RAH | 24 min |
| Aug 22, 1:35 AM EDT | Areal Flood Advisory | RAH | 3 hr |
| Aug 26, 2:31 PM EDT | Special Weather Statement | RAH | 59 min |
| Aug 30, 5:20 PM EDT | Special Weather Statement | RAH | 40 min |
| Sep 4, 3:46 PM EDT | Special Weather Statement | RAH | 59 min |
| Sep 4, 4:49 PM EDT | Special Weather Statement | RAH | 56 min |
| Sep 4, 5:46 PM EDT | Special Weather Statement | RAH | 59 min |
| Sep 4, 6:20 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Sep 4, 9:33 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Sep 9, 1:59 PM EDT | Flash Flood Watch | RAH | 40 min |
| Sep 9, 3:01 PM EDT | Flood Watch | RAH | 36 hr |
| Sep 12, 11:24 PM EDT | Special Weather Statement | RAH | 51 min |
| Sep 25, 9:05 PM EDT | Special Weather Statement | RAH | 40 min |
| Sep 29, 11:07 AM EDT | Tropical Storm Warning | RAH | 36 hr |
| Sep 29, 11:25 AM EDT | Flood Watch | RAH | 38 hr |
| Sep 30, 7:56 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Sep 30, 8:32 PM EDT | Flash Flood Warning | RAH | 3 hr |
| Sep 30, 11:11 PM EDT | Areal Flood Warning | RAH | 3 hr |
| Oct 17, 3:21 AM EDT | Freeze Watch | RAH | 24 hr |
| Oct 18, 3:14 AM EDT | Freeze Watch | RAH | 35 hr |
| Oct 18, 3:14 AM EDT | Freeze Warning | RAH | 30 hr |
| Nov 4, 6:13 AM EDT | Dense Fog Advisory | RAH | 4 hr |
| Nov 6, 10:34 PM EST | Dense Fog Advisory | RAH | 11 hr |
| Nov 11, 6:15 AM EST | Tornado Watch | SPC | 12 hr |
| Nov 11, 4:02 PM EST | Special Weather Statement | RAH | 28 min |
| Dec 7, 8:12 AM EST | Dense Fog Advisory | RAH | 113 min |
| Dec 8, 3:04 AM EST | Dense Fog Advisory | RAH | 6 hr |
| Dec 16, 4:55 AM EST | Dense Fog Advisory | RAH | 4 hr |
| Dec 22, 3:40 AM EST | Wind Chill Advisory | RAH | 55 hr |
| Dec 22, 11:14 AM EST | Wind Advisory | RAH | 31 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 | 14 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 52 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 11 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 4 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 2 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Tropical | |
| Tropical Storm Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe 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.