Alert archive / Vermont / Addison County
Weather alerts in Addison County, Vermont, 2010
121 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Addison County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 121
- Warnings
- 36
- Watches
- 16
- Advisories
- 39
- Busiest month
- July23 alerts
- Busiest day
- July 21, 201010 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Addison County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 13 | 24% | 12 | 92% | 41 min |
| Flash flood warnings | 4 | 0 | 100% | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Burlington, VT: tornado warnings | 3 | 0 | 100% | 1 | 0% | |
| NWS Burlington, VT: severe thunderstorm warnings | 46 | 28 | 39% | 130 | 88% | 28 min |
| NWS Burlington, VT: flash flood warnings | 8 | 0 | 100% | 0 |
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 1, 2:52 AM EST | Winter Storm Watch | BTV | 26 hr |
| Jan 2, 4:33 AM EST | Winter Storm Warning | BTV | 41 hr |
| Jan 8, 11:56 PM EST | Winter Weather Advisory | BTV | 3 hr |
| Jan 23, 2:52 PM EST | Flood Watch | BTV | 60 hr |
| Jan 24, 3:01 AM EST | Wind Advisory | BTV | 37 hr |
| Jan 25, 10:47 AM EST | High Wind Warning | BTV | 5 hr |
| Jan 25, 3:44 PM EST | Areal Flood Warning | BTV | 6 hr |
| Jan 28, 12:37 PM EST | Wind Advisory | BTV | 9 hr |
| Jan 28, 3:00 PM EST | Wind Chill Warning | BTV | 40 hr |
| Jan 28, 3:00 PM EST | Wind Chill Advisory | BTV | 40 hr |
| Feb 23, 3:57 AM EST | Winter Storm Watch | BTV | 7 hr |
| Feb 23, 11:12 AM EST | Winter Storm Warning | BTV | 64 hr |
| Feb 24, 11:44 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 25, 4:00 AM EST | High Wind Watch | BTV | 11 hr |
| Feb 25, 4:00 AM EST | Winter Weather Advisory | BTV | 24 hr |
| Feb 25, 2:34 PM EST | High Wind Warning | BTV | 19 hr |
| Mar 13, 3:19 AM EST | Wind Advisory | BTV | 24 hr |
| Mar 22, 3:08 PM EDT | Flood Watch | BTV | 37 hr |
| Mar 23, 8:52 AM EDT | Areal Flood Advisory | BTV | 6 hr |
| Apr 27, 4:28 AM EDT | Winter Storm Warning | BTV | 33 hr |
| Apr 27, 4:28 AM EDT | Winter Weather Advisory | BTV | 30 hr |
| May 4, 10:56 AM EDT | Special Weather Statement | BTV | 49 min |
| May 4, 11:41 AM EDT | Special Weather Statement | BTV | 49 min |
| May 4, 1:24 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 4, 6:00 PM EDT | Severe Thunderstorm Warning | BTV | 45 min |
| May 4, 6:21 PM EDT | Special Weather Statement | BTV | 54 min |
| May 9, 2:56 PM EDT | Frost Advisory | BTV | 16 hr |
| May 10, 3:05 PM EDT | Freeze Warning | BTV | 16 hr |
| May 12, 4:06 AM EDT | Frost Advisory | BTV | 27 hr |
| May 12, 4:06 AM EDT | Freeze Warning | BTV | 27 hr |
| May 16, 3:37 AM EDT | Frost Advisory | BTV | 28 hr |
| May 26, 3:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 26, 7:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 26, 7:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 26, 8:10 PM EDT | Severe Thunderstorm Warning | BTV | 65 min |
| May 26, 8:44 PM EDT | Severe Thunderstorm Warning | BTV | 61 min |
| May 26, 9:09 PM EDT | Severe Thunderstorm Warning | BTV | 66 min |
| May 26, 9:37 PM EDT | Severe Thunderstorm Warning | BTV | 53 min |
| May 26, 9:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 31, 11:56 PM EDT | Special Weather Statement | BTV | 49 min |
| Jun 1, 1:06 AM EDT | Special Weather Statement | BTV | 54 min |
| Jun 5, 12:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 5, 1:00 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 5, 2:46 PM EDT | Special Weather Statement | BTV | 59 min |
| Jun 8, 3:49 PM EDT | Frost Advisory | BTV | 15 hr |
| Jun 10, 1:53 PM EDT | Special Weather Statement | BTV | 52 min |
| Jun 20, 12:34 PM EDT | Special Weather Statement | BTV | 41 min |
| Jun 24, 3:25 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Jun 24, 3:41 PM EDT | Special Weather Statement | BTV | 64 min |
| Jun 28, 4:31 AM EDT | Areal Flood Advisory | BTV | 2 hr |
| Jul 6, 3:04 AM EDT | Heat Advisory | BTV | 65 hr |
| Jul 8, 1:30 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Jul 9, 3:16 AM EDT | Flash Flood Watch | BTV | 32 hr |
| Jul 9, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 7:28 AM EDT | Areal Flood Advisory | BTV | 3 hr |
| Jul 13, 11:48 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Jul 14, 12:08 AM EDT | Flash Flood Warning | BTV | 8 days |
| Jul 17, 6:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 19, 4:47 PM EDT | Severe Thunderstorm Warning | BTV | 58 min |
| Jul 19, 5:16 PM EDT | Severe Thunderstorm Warning | BTV | 44 min |
| Jul 19, 5:28 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Jul 20, 3:16 PM EDT | Special Weather Statement | BTV | 59 min |
| Jul 21, 10:43 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 11:27 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 1:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 21, 2:31 PM EDT | Severe Thunderstorm Warning | BTV | 59 min |
| Jul 21, 3:27 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| Jul 21, 3:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 21, 4:18 PM EDT | Severe Thunderstorm Warning | BTV | 57 min |
| Jul 21, 4:42 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Jul 21, 5:00 PM EDT | Severe Thunderstorm Warning | BTV | 60 min |
| Jul 21, 6:42 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| Jul 28, 10:25 PM EDT | Severe Thunderstorm Warning | BTV | 35 min |
| Aug 2, 4:00 PM EDT | Severe Thunderstorm Warning | BTV | 46 min |
| Aug 3, 3:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 5, 7:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 2:30 PM EDT | Severe Thunderstorm Warning | BTV | 60 min |
| Aug 9, 5:23 PM EDT | Severe Thunderstorm Warning | BTV | 40 min |
| Aug 9, 5:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 9, 7:11 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Aug 9, 7:55 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Aug 9, 8:26 PM EDT | Flash Flood Warning | BTV | 3 hr |
| Aug 10, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 16, 8:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 11:14 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 12:05 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 16, 2:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 22, 3:39 AM EDT | Flood Watch | BTV | 24 hr |
| Sep 17, 4:23 AM EDT | Frost Advisory | BTV | 26 hr |
| Sep 29, 4:12 AM EDT | Flood Watch | BTV | 70 hr |
| Sep 30, 9:13 PM EDT | Severe Thunderstorm Warning | BTV | 62 min |
| Sep 30, 10:16 PM EDT | Special Weather Statement | BTV | 74 min |
| Sep 30, 11:25 PM EDT | Areal Flood Advisory | BTV | 6 hr |
| Oct 1, 12:00 AM EDT | Flash Flood Warning | BTV | 6 hr |
| Oct 1, 5:45 AM EDT | Areal Flood Warning | BTV | 17 hr |
| Oct 2, 8:43 PM EDT | Frost Advisory | BTV | 10 hr |
| Oct 3, 3:33 PM EDT | Frost Advisory | BTV | 15 hr |
| Oct 9, 3:00 AM EDT | Freeze Warning | BTV | 29 hr |
| Oct 11, 3:01 PM EDT | Frost Advisory | BTV | 13 hr |
| Oct 12, 3:23 PM EDT | Frost Advisory | BTV | 16 hr |
| Oct 14, 3:24 PM EDT | Flood Watch | BTV | 48 hr |
| Oct 15, 3:38 AM EDT | Wind Advisory | BTV | 19 hr |
| Oct 15, 10:19 AM EDT | Winter Weather Advisory | BTV | 17 hr |
| Oct 15, 7:25 PM EDT | Areal Flood Warning | BTV | 10 hr |
| Nov 7, 2:10 PM EST | Winter Weather Advisory | BTV | 32 hr |
| Nov 16, 3:16 AM EST | Wind Advisory | BTV | 28 hr |
| Nov 17, 11:09 AM EST | Wind Advisory | BTV | 16 hr |
| Nov 25, 3:11 AM EST | Winter Weather Advisory | BTV | 32 hr |
| Nov 26, 12:47 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Nov 30, 3:03 AM EST | High Wind Watch | BTV | 13 hr |
| Nov 30, 3:48 PM EST | High Wind Warning | BTV | 26 hr |
| Dec 6, 10:36 AM EST | Winter Storm Warning | BTV | 28 hr |
| Dec 6, 10:36 AM EST | Winter Weather Advisory | BTV | 24 hr |
| Dec 10, 2:05 PM EST | High Wind Watch | BTV | 25 hr |
| Dec 11, 2:51 PM EST | High Wind Warning | BTV | 29 hr |
| Dec 11, 2:51 PM EST | Wind Advisory | BTV | 29 hr |
| Dec 12, 6:28 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 13, 2:59 AM EST | Winter Weather Advisory | BTV | 31 hr |
| Dec 19, 7:16 PM EST | Freezing Fog Advisory | BTV | 12 hr |
| Dec 22, 5:41 PM EST | Winter Weather Advisory | BTV | 16 hr |
| Dec 26, 3:06 AM EST | Winter Storm Warning | BTV | 33 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 archive20092011
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.