Alert archive / Vermont / Lamoille County
Weather alerts in Lamoille County, Vermont, 2011
174 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lamoille County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 174
- Warnings
- 49
- Watches
- 26
- Advisories
- 29
- Busiest month
- May35 alerts
- Busiest day
- May 26, 201110 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lamoille County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 23 | 17 | 26% | 11 | 100% | 41 min |
| Flash flood warnings | 8 | 6 | 25% | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Burlington, VT: tornado warnings | 5 | 0 | 100% | 0 | ||
| NWS Burlington, VT: severe thunderstorm warnings | 103 | 67 | 35% | 243 | 82% | 26 min |
| NWS Burlington, VT: flash flood warnings | 29 | 19 | 34% | 101 | 88% | 178 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 8, 3:27 PM EST | Winter Weather Advisory | BTV | 36 hr |
| Jan 11, 11:31 AM EST | Winter Storm Warning | BTV | 37 hr |
| Jan 11, 11:31 AM EST | Winter Weather Advisory | BTV | 26 hr |
| Jan 17, 3:21 PM EST | Winter Weather Advisory | BTV | 35 hr |
| Jan 23, 9:22 AM EST | Wind Chill Advisory | BTV | 10 hr |
| Jan 31, 3:26 AM EST | Winter Storm Watch | BTV | 12 hr |
| Jan 31, 3:39 PM EST | Winter Storm Warning | BTV | 57 hr |
| Feb 2, 2:57 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 10:00 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 5, 3:56 AM EST | Winter Storm Warning | BTV | 25 hr |
| Feb 5, 4:45 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 7, 2:31 AM EST | Winter Weather Advisory | BTV | 32 hr |
| Feb 14, 3:23 PM EST | Wind Chill Advisory | BTV | 12 hr |
| Feb 18, 11:25 PM EST | Special Weather Statement | BTV | 110 min |
| Feb 23, 3:53 PM EST | Winter Storm Watch | BTV | 12 hr |
| Feb 24, 3:31 AM EST | Winter Storm Warning | BTV | 41 hr |
| Feb 27, 2:19 PM EST | Winter Weather Advisory | BTV | 23 hr |
| Feb 28, 5:19 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 5, 3:32 AM EST | Winter Storm Watch | BTV | 11 hr |
| Mar 5, 2:15 PM EST | Winter Storm Warning | BTV | 50 hr |
| Mar 6, 9:18 AM EST | Areal Flood Advisory | BTV | 36 hr |
| Mar 6, 7:32 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 7, 3:10 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 9, 2:15 PM EST | Winter Weather Advisory | BTV | 25 hr |
| Mar 10, 1:26 PM EST | Flood Watch | BTV | 45 hr |
| Mar 10, 1:49 PM EST | Wind Advisory | BTV | 19 hr |
| Mar 18, 2:41 PM EDT | Areal Flood Advisory | BTV | 6 hr |
| Mar 18, 8:39 PM EDT | Areal Flood Advisory | BTV | 36 hr |
| Mar 20, 3:26 PM EDT | Winter Weather Advisory | BTV | 24 hr |
| Mar 30, 3:58 AM EDT | Winter Storm Watch | BTV | 24 hr |
| Mar 31, 3:47 AM EDT | Winter Storm Warning | BTV | 44 hr |
| Apr 11, 2:59 AM EDT | Flood Watch | BTV | 28 hr |
| Apr 11, 7:08 AM EDT | Severe Thunderstorm Warning | BTV | 37 min |
| Apr 11, 7:38 AM EDT | Special Weather Statement | BTV | 52 min |
| Apr 11, 8:00 AM EDT | Areal Flood Warning | BTV | 8 hr |
| Apr 11, 10:02 AM EDT | River Flood Warning | BTV | 30 hr |
| Apr 11, 2:30 PM EDT | Special Weather Statement | BTV | 30 min |
| Apr 15, 3:31 PM EDT | High Wind Warning | BTV | 36 hr |
| Apr 25, 3:48 AM EDT | Flood Watch | BTV | 35 hr |
| Apr 26, 7:17 PM EDT | Areal Flood Advisory | BTV | 6 hr |
| Apr 26, 11:53 PM EDT | Areal Flood Advisory | BTV | 8 hr |
| Apr 27, 12:19 AM EDT | River Flood Warning | BTV | 23 hr |
| Apr 27, 1:30 AM EDT | Areal Flood Advisory | BTV | 6 hr |
| Apr 27, 1:47 AM EDT | River Flood Warning | BTV | 55 hr |
| Apr 27, 5:47 PM EDT | Flash Flood Watch | BTV | 26 hr |
| Apr 28, 7:27 AM EDT | Special Weather Statement | BTV | 63 min |
| Apr 28, 1:21 PM EDT | Areal Flood Warning | BTV | 6 hr |
| Apr 28, 3:44 PM EDT | Special Weather Statement | BTV | 61 min |
| Apr 28, 4:46 PM EDT | Special Weather Statement | BTV | 59 min |
| May 2, 3:20 PM EDT | Flood Watch | BTV | 48 hr |
| May 14, 4:03 AM EDT | Flood Watch | BTV | 3 days |
| May 20, 3:02 PM EDT | Special Weather Statement | BTV | 58 min |
| May 20, 4:00 PM EDT | Areal Flood Advisory | BTV | 28 min |
| May 20, 4:27 PM EDT | Flash Flood Warning | BTV | 3 hr |
| May 21, 12:22 AM EDT | Areal Flood Advisory | BTV | 5 hr |
| May 21, 1:52 PM EDT | Special Weather Statement | BTV | 53 min |
| May 21, 3:07 PM EDT | Special Weather Statement | BTV | 53 min |
| May 26, 10:05 AM EDT | Flash Flood Watch | BTV | 42 hr |
| May 26, 12:29 PM EDT | Tornado Watch | SPC | 8 hr |
| May 26, 1:59 PM EDT | Severe Thunderstorm Warning | BTV | 61 min |
| May 26, 2:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 26, 4:15 PM EDT | Areal Flood Advisory | BTV | 6 hr |
| May 26, 4:27 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| May 26, 5:23 PM EDT | Severe Thunderstorm Warning | BTV | 67 min |
| May 26, 6:07 PM EDT | Severe Thunderstorm Warning | BTV | 53 min |
| May 26, 6:24 PM EDT | Severe Thunderstorm Warning | BTV | 66 min |
| May 26, 6:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 26, 8:29 PM EDT | Flash Flood Warning | BTV | 3 hr |
| May 26, 10:28 PM EDT | Flash Flood Warning | BTV | 6 hr |
| May 27, 4:07 AM EDT | Flash Flood Warning | BTV | 3 hr |
| May 27, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 27, 5:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 27, 6:35 PM EDT | Flash Flood Warning | BTV | 4 hr |
| May 27, 6:42 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| May 27, 6:46 PM EDT | Severe Thunderstorm Warning | BTV | 59 min |
| May 27, 7:05 PM EDT | Flash Flood Warning | BTV | 3 hr |
| May 28, 4:14 AM EDT | Flash Flood Watch | BTV | 18 hr |
| May 28, 1:26 PM EDT | Special Weather Statement | BTV | 109 min |
| May 28, 1:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 28, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 28, 5:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 29, 11:10 PM EDT | Special Weather Statement | BTV | 65 min |
| May 30, 12:39 AM EDT | Areal Flood Advisory | BTV | 22 min |
| May 30, 1:00 AM EDT | Flash Flood Warning | BTV | 4 hr |
| Jun 1, 5:58 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 6:05 AM EDT | Special Weather Statement | BTV | 55 min |
| Jun 1, 6:34 AM EDT | Severe Thunderstorm Warning | BTV | 56 min |
| Jun 1, 7:27 AM EDT | Special Weather Statement | BTV | 63 min |
| Jun 1, 9:38 AM EDT | Mesoscale Discussion | SPC | 37 min |
| Jun 1, 10:02 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 8, 7:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 9, 4:15 AM EDT | Special Weather Statement | BTV | 60 min |
| Jun 9, 5:08 AM EDT | Special Weather Statement | BTV | 67 min |
| Jun 9, 12:06 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 9, 2:41 PM EDT | Severe Thunderstorm Warning | BTV | 45 min |
| Jun 9, 3:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 18, 1:24 PM EDT | Special Weather Statement | BTV | 51 min |
| Jun 18, 1:41 PM EDT | Severe Thunderstorm Warning | BTV | 64 min |
| Jun 18, 1:46 PM EDT | Severe Thunderstorm Warning | BTV | 59 min |
| Jun 25, 8:25 PM EDT | Special Weather Statement | BTV | 50 min |
| Jul 3, 9:29 PM EDT | Severe Thunderstorm Warning | BTV | 61 min |
| Jul 3, 10:40 PM EDT | Special Weather Statement | BTV | 65 min |
| Jul 6, 1:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 6, 1:29 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 6, 2:30 PM EDT | Severe Thunderstorm Warning | BTV | 60 min |
| Jul 6, 2:42 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| Jul 6, 3:12 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| Jul 6, 3:18 PM EDT | Severe Thunderstorm Warning | BTV | 57 min |
| Jul 6, 3:51 PM EDT | Severe Thunderstorm Warning | BTV | 54 min |
| Jul 6, 4:50 PM EDT | Special Weather Statement | BTV | 25 min |
| Jul 6, 6:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 9, 12:48 AM EDT | Special Weather Statement | BTV | 57 min |
| Jul 13, 4:18 PM EDT | Special Weather Statement | BTV | 57 min |
| Jul 17, 7:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jul 17, 7:41 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 17, 10:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 17, 10:13 PM EDT | Special Weather Statement | BTV | 62 min |
| Jul 18, 8:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 21, 12:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 3:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 21, 8:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 22, 1:07 AM EDT | Special Weather Statement | BTV | 53 min |
| Jul 26, 11:05 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 26, 11:28 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 26, 3:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 26, 4:30 PM EDT | Special Weather Statement | BTV | 60 min |
| Jul 26, 6:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 30, 12:33 AM EDT | Special Weather Statement | BTV | 87 min |
| Jul 30, 2:05 AM EDT | Special Weather Statement | BTV | 85 min |
| Aug 1, 12:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 21, 12:14 PM EDT | Special Weather Statement | BTV | 61 min |
| Aug 21, 1:01 PM EDT | Special Weather Statement | BTV | 59 min |
| Aug 21, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 21, 1:23 PM EDT | Severe Thunderstorm Warning | BTV | 82 min |
| Aug 21, 5:32 PM EDT | Special Weather Statement | BTV | 58 min |
| Aug 21, 6:01 PM EDT | Severe Thunderstorm Warning | BTV | 36 min |
| Aug 26, 3:45 PM EDT | High Wind Watch | BTV | 13 hr |
| Aug 26, 3:46 PM EDT | Flash Flood Watch | BTV | 54 hr |
| Aug 27, 4:47 AM EDT | High Wind Warning | BTV | 44 hr |
| Aug 28, 2:50 PM EDT | Flash Flood Warning | BTV | 6 hr |
| Aug 28, 2:55 PM EDT | Areal Flood Advisory | BTV | 3 hr |
| Aug 28, 5:41 PM EDT | Areal Flood Warning | BTV | 14 hr |
| Aug 28, 5:52 PM EDT | River Flood Warning | BTV | 24 hr |
| Aug 29, 2:44 AM EDT | River Flood Warning | BTV | 30 hr |
| Sep 3, 4:12 AM EDT | Flash Flood Watch | BTV | 72 hr |
| Sep 4, 10:03 AM EDT | Severe Thunderstorm Warning | BTV | 57 min |
| Sep 4, 10:55 AM EDT | Special Weather Statement | BTV | 65 min |
| Sep 4, 2:43 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 4, 3:24 PM EDT | Special Weather Statement | BTV | 66 min |
| Sep 4, 3:40 PM EDT | Severe Thunderstorm Warning | BTV | 65 min |
| Sep 4, 6:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Sep 4, 7:11 PM EDT | Severe Thunderstorm Warning | BTV | 64 min |
| Sep 4, 8:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Sep 4, 9:50 PM EDT | Special Weather Statement | BTV | 55 min |
| Sep 5, 1:27 PM EDT | Special Weather Statement | BTV | 63 min |
| Sep 5, 2:34 PM EDT | Special Weather Statement | BTV | 71 min |
| Sep 5, 4:16 PM EDT | Special Weather Statement | BTV | 104 min |
| Sep 5, 6:02 PM EDT | Special Weather Statement | BTV | 2 hr |
| Sep 12, 6:56 PM EDT | Special Weather Statement | BTV | 49 min |
| Sep 13, 9:00 PM EDT | Special Weather Statement | BTV | 60 min |
| Sep 16, 4:03 AM EDT | Freeze Warning | BTV | 27 hr |
| Sep 17, 7:28 AM EDT | Frost Advisory | BTV | 20 hr |
| Sep 23, 4:25 AM EDT | Dense Fog Advisory | BTV | 4 hr |
| Sep 29, 6:05 PM EDT | Special Weather Statement | BTV | 85 min |
| Oct 5, 4:34 AM EDT | Freeze Warning | BTV | 27 hr |
| Oct 19, 12:47 PM EDT | Wind Advisory | BTV | 15 hr |
| Nov 21, 2:55 PM EST | Winter Storm Watch | BTV | 13 hr |
| Nov 22, 3:56 AM EST | Winter Weather Advisory | BTV | 33 hr |
| Nov 22, 10:08 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 21, 10:59 AM EST | Winter Weather Advisory | BTV | 16 hr |
| Dec 28, 12:14 PM EST | Wind Chill Advisory | BTV | 16 hr |
| Dec 28, 2:13 PM EST | Winter Weather Advisory | BTV | 7 hr |
| Dec 30, 4:16 AM EST | Winter Weather Advisory | 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 archive20102012
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.