Alert archive / North Carolina / Avery County
Weather alerts in Avery County, North Carolina, 2009
142 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Avery County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 142
- Warnings
- 30
- Watches
- 24
- Advisories
- 69
- Busiest month
- February21 alerts
- Busiest day
- January 7, 20095 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Avery County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 5 | 50% | 3 | 100% | 31 min |
| Flash flood warnings | 2 | 2 | 0% | 2 | 100% | 201 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 33 | 8 | 76% | 15 | 93% | 21 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 394 | 237 | 40% | 457 | 86% | 26 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 55 | 40 | 27% | 103 | 73% | 94 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, 8:01 AM EST | Winter Weather Advisory | GSP | 3 hr |
| Jan 2, 8:53 PM EST | Dense Fog Advisory | GSP | 15 hr |
| Jan 5, 11:13 AM EST | Flash Flood Watch | GSP | 47 hr |
| Jan 7, 1:46 AM EST | Areal Flood Advisory | GSP | 119 min |
| Jan 7, 3:16 AM EST | Areal Flood Advisory | GSP | 119 min |
| Jan 7, 5:14 AM EST | Wind Advisory | GSP | 19 hr |
| Jan 7, 5:39 AM EST | Winter Weather Advisory | GSP | 33 hr |
| Jan 7, 3:09 PM EST | Winter Storm Warning | GSP | 24 hr |
| Jan 8, 4:33 AM EST | Lake Wind Advisory | GSP | 22 hr |
| Jan 10, 9:29 AM EST | Freezing Rain Advisory | GSP | 91 min |
| Jan 13, 2:11 AM EST | Winter Weather Advisory | GSP | 25 hr |
| Jan 14, 2:34 PM EST | Winter Weather Advisory | GSP | 23 hr |
| Jan 15, 2:31 AM EST | Wind Chill Advisory | GSP | 33 hr |
| Jan 18, 12:10 AM EST | Winter Weather Advisory | GSP | 11 hr |
| Jan 18, 4:13 AM EST | Winter Storm Watch | GSP | 11 hr |
| Jan 18, 2:56 PM EST | Winter Storm Warning | GSP | 60 hr |
| Jan 20, 2:16 PM EST | Wind Chill Advisory | GSP | 19 hr |
| Jan 20, 2:16 PM EST | Winter Weather Advisory | GSP | 19 hr |
| Jan 28, 3:57 AM EST | Lake Wind Advisory | GSP | 14 hr |
| Jan 30, 2:53 AM EST | Lake Wind Advisory | GSP | 15 hr |
| Feb 2, 3:20 AM EST | Winter Storm Watch | GSP | 24 hr |
| Feb 2, 4:31 PM EST | Winter Storm Warning | GSP | 55 hr |
| Feb 2, 4:31 PM EST | Winter Weather Advisory | GSP | 4 hr |
| Feb 3, 2:26 PM EST | Wind Chill Advisory | GSP | 44 hr |
| Feb 4, 4:46 AM EST | Wind Chill Warning | GSP | 5 hr |
| Feb 10, 2:51 PM EST | High Wind Watch | GSP | 13 hr |
| Feb 11, 3:22 AM EST | High Wind Warning | GSP | 39 hr |
| Feb 11, 12:17 PM EST | Fire Weather Watch | GSP | 18 hr |
| Feb 11, 4:08 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Feb 11, 4:34 PM EST | Mesoscale Discussion | SPC | 86 min |
| Feb 11, 5:34 PM EST | Severe Thunderstorm Warning | GSP | 56 min |
| Feb 12, 5:55 PM EST | Wind Advisory | GSP | 12 hr |
| Feb 13, 5:47 AM EST | Lake Wind Advisory | GSP | 6 hr |
| Feb 15, 2:57 PM EST | Winter Weather Advisory | GSP | 12 hr |
| Feb 17, 3:31 PM EST | Winter Storm Watch | GSP | 23 hr |
| Feb 18, 5:20 AM EST | Freezing Rain Advisory | GSP | 4 hr |
| Feb 18, 2:57 PM EST | Winter Weather Advisory | GSP | 23 hr |
| Feb 18, 3:10 PM EST | Wind Advisory | GSP | 29 hr |
| Feb 19, 8:37 PM EST | Lake Wind Advisory | GSP | 7 hr |
| Feb 21, 3:38 PM EST | Winter Weather Advisory | GSP | 32 hr |
| Feb 28, 4:12 AM EST | Winter Storm Watch | GSP | 25 hr |
| Mar 1, 5:18 AM EST | Winter Storm Warning | GSP | 23 hr |
| Mar 2, 3:17 AM EST | Lake Wind Advisory | GSP | 9 hr |
| Mar 2, 3:44 AM EST | Wind Chill Advisory | GSP | 28 hr |
| Mar 2, 2:45 PM EST | Winter Weather Advisory | GSP | 18 hr |
| Mar 12, 8:16 PM EDT | Winter Weather Advisory | GSP | 15 hr |
| Mar 16, 3:16 PM EDT | Dense Fog Advisory | GSP | 18 hr |
| Mar 27, 4:41 AM EDT | Dense Fog Advisory | GSP | 6 hr |
| Mar 29, 4:55 AM EDT | Wind Advisory | GSP | 17 hr |
| Mar 29, 2:47 PM EDT | High Wind Warning | GSP | 7 hr |
| Mar 29, 10:15 PM EDT | Wind Advisory | GSP | 5 hr |
| Apr 2, 3:06 PM EDT | Wind Advisory | GSP | 27 hr |
| Apr 2, 11:35 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 3, 3:20 AM EDT | High Wind Warning | GSP | 24 hr |
| Apr 4, 2:52 AM EDT | Wind Advisory | GSP | 7 hr |
| Apr 5, 2:48 PM EDT | Winter Storm Watch | GSP | 13 hr |
| Apr 6, 4:06 AM EDT | Winter Storm Warning | GSP | 47 hr |
| Apr 6, 4:17 AM EDT | Lake Wind Advisory | GSP | 16 hr |
| Apr 8, 3:18 AM EDT | Lake Wind Advisory | GSP | 15 hr |
| Apr 10, 4:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 13, 7:45 AM EDT | Wind Advisory | GSP | 7 hr |
| Apr 16, 4:03 AM EDT | Freeze Warning | GSP | 28 hr |
| Apr 21, 3:41 AM EDT | Lake Wind Advisory | GSP | 16 hr |
| Apr 21, 10:12 PM EDT | Freeze Warning | GSP | 12 hr |
| Apr 22, 10:01 AM EDT | Lake Wind Advisory | GSP | 8 hr |
| Apr 22, 8:37 PM EDT | Frost Advisory | GSP | 7 hr |
| Apr 25, 2:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 4, 4:30 PM EDT | Severe Thunderstorm Warning | GSP | 29 min |
| May 8, 6:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 8, 6:32 PM EDT | Tornado Watch | SPC | 7 hr |
| May 8, 8:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 12, 4:58 AM EDT | Dense Fog Advisory | GSP | 5 hr |
| May 15, 3:31 PM EDT | Areal Flood Advisory | GSP | 3 hr |
| May 16, 6:25 PM EDT | Areal Flood Advisory | GSP | 4 hr |
| May 16, 7:19 PM EDT | Flash Flood Warning | GSP | 6 hr |
| May 18, 10:46 AM EDT | Frost Advisory | GSP | 22 hr |
| May 28, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 28, 2:25 PM EDT | Areal Flood Advisory | GSP | 110 min |
| May 28, 2:42 PM EDT | Flash Flood Warning | GSP | 3 hr |
| May 28, 4:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 2, 5:24 PM EDT | Severe Thunderstorm Warning | GSP | 66 min |
| Jun 11, 12:18 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 11, 3:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 11, 4:05 PM EDT | Severe Thunderstorm Warning | GSP | 70 min |
| Jun 11, 5:11 PM EDT | Severe Thunderstorm Warning | GSP | 64 min |
| Jun 15, 11:49 PM EDT | Flash Flood Watch | GSP | 9 hr |
| Jun 16, 5:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 8:00 PM EDT | Severe Thunderstorm Warning | GSP | 75 min |
| Jun 16, 8:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 17, 12:54 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 17, 3:17 PM EDT | Mesoscale Discussion | SPC | 28 min |
| Jun 17, 4:07 PM EDT | Mesoscale Discussion | SPC | 23 min |
| Jun 18, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 3:38 PM EDT | Severe Thunderstorm Warning | GSP | 51 min |
| Jun 18, 4:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 20, 5:17 PM EDT | Areal Flood Advisory | GSP | 73 min |
| Jul 20, 6:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 20, 6:25 PM EDT | Severe Thunderstorm Warning | GSP | 36 min |
| Aug 4, 6:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Aug 5, 1:57 PM EDT | Severe Thunderstorm Warning | GSP | 63 min |
| Aug 11, 1:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 13, 5:38 PM EDT | Severe Thunderstorm Warning | GSP | 67 min |
| Sep 9, 12:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Sep 9, 12:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Sep 12, 4:19 AM EDT | Dense Fog Advisory | GSP | 6 hr |
| Sep 20, 6:19 PM EDT | Flood Watch | GSP | 36 hr |
| Sep 26, 3:35 AM EDT | Flash Flood Watch | GSP | 17 hr |
| Sep 30, 3:55 AM EDT | Frost Advisory | GSP | 30 hr |
| Oct 6, 9:29 PM EDT | Wind Advisory | GSP | 19 hr |
| Oct 9, 7:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Oct 15, 3:46 PM EDT | Freeze Watch | GSP | 13 hr |
| Oct 16, 4:25 AM EDT | Freeze Warning | GSP | 29 hr |
| Oct 17, 3:57 AM EDT | Winter Weather Advisory | GSP | 24 hr |
| Oct 17, 4:09 AM EDT | Freeze Warning | GSP | 29 hr |
| Oct 18, 4:14 AM EDT | Freeze Warning | GSP | 29 hr |
| Oct 23, 1:16 PM EDT | Wind Advisory | GSP | 11 hr |
| Nov 9, 2:26 AM EST | Flash Flood Watch | GSP | 3 days |
| Nov 11, 3:12 AM EST | Areal Flood Advisory | GSP | 6 hr |
| Nov 11, 3:27 AM EST | Lake Wind Advisory | GSP | 16 hr |
| Nov 26, 3:54 AM EST | Winter Weather Advisory | GSP | 30 hr |
| Nov 26, 4:00 AM EST | Wind Advisory | GSP | 47 hr |
| Dec 1, 3:02 PM EST | Wind Advisory | GSP | 44 hr |
| Dec 3, 3:44 PM EST | Winter Storm Watch | GSP | 23 hr |
| Dec 4, 2:48 PM EST | Winter Storm Warning | GSP | 26 hr |
| Dec 8, 4:18 AM EST | Wind Advisory | GSP | 24 hr |
| Dec 8, 2:31 PM EST | High Wind Warning | GSP | 28 hr |
| Dec 8, 9:19 PM EST | Freezing Rain Advisory | GSP | 6 hr |
| Dec 9, 7:07 PM EST | Wind Advisory | GSP | 27 hr |
| Dec 12, 3:26 AM EST | Winter Weather Advisory | GSP | 27 hr |
| Dec 15, 2:43 PM EST | Lake Wind Advisory | GSP | 15 hr |
| Dec 16, 5:07 PM EST | Winter Storm Watch | GSP | 24 hr |
| Dec 17, 3:53 PM EST | Winter Storm Warning | GSP | 3 days |
| Dec 18, 1:32 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 3:40 PM EST | Winter Storm Watch | GSP | 13 hr |
| Dec 24, 4:05 AM EST | Ice Storm Warning | GSP | 32 hr |
| Dec 24, 11:11 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 25, 3:18 PM EST | Winter Weather Advisory | GSP | 18 hr |
| Dec 25, 9:43 PM EST | Dense Fog Advisory | GSP | 9 hr |
| Dec 27, 2:53 PM EST | Winter Weather Advisory | GSP | 19 hr |
| Dec 28, 4:00 AM EST | Lake Wind Advisory | GSP | 31 hr |
| Dec 28, 2:44 PM EST | Wind Advisory | GSP | 21 hr |
| Dec 30, 2:48 PM EST | Winter Weather Advisory | GSP | 18 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.