Alert archive / Vermont / Lamoille County
Weather alerts in Lamoille County, Vermont, 2019
128 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 128
- Warnings
- 40
- Watches
- 15
- Advisories
- 31
- Busiest month
- January24 alerts
- Busiest day
- November 1, 20198 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 8 | 11% | 4 | 50% | 4 min |
| Flash flood warnings | 2 | 2 | 0% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Burlington, VT: severe thunderstorm warnings | 42 | 27 | 36% | 74 | 77% | 21 min |
| NWS Burlington, VT: flash flood warnings | 6 | 5 | 17% | 23 | 70% | 78 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 |
|---|---|---|---|
| Dec 31, 10:15 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 7, 3:07 PM EST | Winter Weather Advisory | BTV | 19 hr |
| Jan 8, 2:29 PM EST | Winter Weather Advisory | BTV | 46 hr |
| Jan 8, 6:22 PM EST | Winter Storm Warning | BTV | 42 hr |
| Jan 10, 3:40 AM EST | Wind Chill Advisory | BTV | 30 hr |
| Jan 11, 2:44 PM EST | Wind Chill Advisory | BTV | 19 hr |
| Jan 16, 3:05 PM EST | Wind Chill Advisory | BTV | 12 hr |
| Jan 17, 3:21 AM EST | Winter Storm Watch | BTV | 24 hr |
| Jan 18, 3:23 AM EST | Winter Storm Warning | BTV | 59 hr |
| Jan 20, 12:46 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 20, 3:27 AM EST | Wind Chill Warning | BTV | 52 hr |
| Jan 20, 6:42 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 20, 2:30 PM EST | Winter Weather Advisory | BTV | 12 hr |
| Jan 22, 3:10 PM EST | Winter Weather Advisory | BTV | 37 hr |
| Jan 23, 7:00 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 27, 2:05 PM EST | Snow Squall Warning | BTV | 55 min |
| Jan 27, 2:56 PM EST | Snow Squall Warning | BTV | 64 min |
| Jan 28, 3:27 AM EST | Winter Storm Watch | BTV | 12 hr |
| Jan 28, 3:35 PM EST | Winter Storm Warning | BTV | 35 hr |
| Jan 30, 3:41 AM EST | Wind Chill Advisory | BTV | 32 hr |
| Jan 30, 4:28 PM EST | Snow Squall Warning | BTV | 32 min |
| Jan 30, 4:55 PM EST | Snow Squall Warning | BTV | 35 min |
| Jan 30, 5:14 PM EST | Snow Squall Warning | BTV | 61 min |
| Jan 31, 2:32 PM EST | Wind Chill Advisory | BTV | 19 hr |
| Feb 2, 3:19 PM EST | Winter Weather Advisory | BTV | 43 hr |
| Feb 5, 2:53 PM EST | Winter Weather Advisory | BTV | 36 hr |
| Feb 6, 6:50 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 3:13 AM EST | Winter Weather Advisory | BTV | 24 hr |
| Feb 7, 2:04 PM EST | Wind Advisory | BTV | 46 hr |
| Feb 10, 3:29 AM EST | Winter Storm Watch | BTV | 11 hr |
| Feb 10, 2:45 PM EST | Winter Storm Warning | BTV | 69 hr |
| Feb 12, 3:35 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 20, 2:58 AM EST | Winter Weather Advisory | BTV | 24 hr |
| Feb 20, 10:15 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 23, 3:53 AM EST | Winter Weather Advisory | BTV | 32 hr |
| Feb 23, 3:03 PM EST | Wind Advisory | BTV | 52 hr |
| Feb 24, 2:45 PM EST | Winter Weather Advisory | BTV | 32 hr |
| Feb 25, 3:22 AM EST | Wind Chill Advisory | BTV | 27 hr |
| Feb 25, 9:29 AM EST | Special Weather Statement | BTV | 61 min |
| Feb 25, 11:01 AM EST | Special Weather Statement | BTV | 59 min |
| Feb 26, 3:11 PM EST | Wind Chill Advisory | BTV | 18 hr |
| Mar 11, 8:55 PM EDT | Winter Weather Advisory | BTV | 6 hr |
| Mar 14, 2:37 AM EDT | Flood Watch | BTV | 60 hr |
| Mar 16, 11:48 AM EDT | Special Weather Statement | BTV | 42 min |
| Mar 20, 3:21 PM EDT | Winter Storm Watch | BTV | 24 hr |
| Mar 21, 3:06 PM EDT | Winter Storm Warning | BTV | 43 hr |
| Apr 3, 5:16 PM EDT | Special Weather Statement | BTV | 44 min |
| Apr 12, 2:44 PM EDT | Flood Watch | BTV | 4 days |
| Apr 15, 10:33 PM EDT | River Flood Warning | BTV | 8 hr |
| Apr 18, 3:55 AM EDT | Flood Watch | BTV | 3 days |
| Apr 20, 5:28 AM EDT | River Flood Warning | BTV | 22 hr |
| Apr 20, 10:25 AM EDT | River Flood Warning | BTV | 36 hr |
| May 19, 1:51 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 20, 11:44 AM EDT | Flash Flood Watch | BTV | 9 hr |
| Jun 20, 2:45 PM EDT | Flash Flood Warning | BTV | 3 hr |
| Jun 20, 4:29 PM EDT | Areal Flood Warning | BTV | 3 hr |
| Jun 26, 4:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 26, 5:08 PM EDT | Severe Thunderstorm Warning | BTV | 67 min |
| Jun 28, 12:18 AM EDT | Special Weather Statement | BTV | 57 min |
| Jun 29, 5:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 29, 6:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 7:27 PM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| Jun 29, 8:20 PM EDT | Severe Thunderstorm Warning | BTV | 13 min |
| Jul 6, 11:55 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 6, 12:56 PM EDT | Severe Thunderstorm Warning | BTV | 32 min |
| Jul 13, 7:55 PM EDT | Special Weather Statement | BTV | 50 min |
| Jul 17, 3:33 PM EDT | Special Weather Statement | BTV | 57 min |
| Jul 18, 2:28 PM EDT | Heat Advisory | BTV | 3 days |
| Jul 20, 6:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 20, 6:45 PM EDT | Special Weather Statement | BTV | 60 min |
| Jul 28, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 2:06 PM EDT | Severe Thunderstorm Warning | BTV | 39 min |
| Jul 28, 2:49 PM EDT | Special Weather Statement | BTV | 41 min |
| Jul 28, 3:24 PM EDT | Special Weather Statement | BTV | 51 min |
| Jul 30, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 30, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 30, 3:46 PM EDT | Severe Thunderstorm Warning | BTV | 59 min |
| Jul 30, 4:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 30, 4:44 PM EDT | Severe Thunderstorm Warning | BTV | 61 min |
| Jul 30, 4:59 PM EDT | Severe Thunderstorm Warning | BTV | 61 min |
| Jul 30, 5:37 PM EDT | Severe Thunderstorm Warning | BTV | 37 min |
| Aug 3, 2:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 1:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 8, 8:07 PM EDT | Special Weather Statement | BTV | 38 min |
| Aug 8, 8:41 PM EDT | Special Weather Statement | BTV | 34 min |
| Aug 9, 5:13 PM EDT | Special Weather Statement | BTV | 62 min |
| Aug 9, 6:14 PM EDT | Special Weather Statement | BTV | 61 min |
| Sep 4, 8:50 AM EDT | Special Weather Statement | BTV | 55 min |
| Sep 4, 11:19 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 18, 3:00 PM EDT | Frost Advisory | BTV | 18 hr |
| Sep 29, 2:52 AM EDT | Frost Advisory | BTV | 29 hr |
| Oct 1, 4:12 PM EDT | Special Weather Statement | BTV | 48 min |
| Oct 2, 2:13 PM EDT | Frost Advisory | BTV | 17 hr |
| Oct 3, 3:33 PM EDT | Freeze Watch | BTV | 12 hr |
| Oct 4, 3:40 AM EDT | Freeze Warning | BTV | 28 hr |
| Oct 16, 3:31 PM EDT | Flood Watch | BTV | 24 hr |
| Oct 30, 3:15 AM EDT | Flood Watch | BTV | 55 hr |
| Oct 30, 3:07 PM EDT | Wind Advisory | BTV | 48 hr |
| Oct 31, 9:17 PM EDT | Special Weather Statement | BTV | 43 min |
| Oct 31, 10:09 PM EDT | Special Weather Statement | BTV | 66 min |
| Oct 31, 11:21 PM EDT | Areal Flood Warning | BTV | 12 hr |
| Nov 1, 12:20 AM EDT | Flash Flood Warning | BTV | 3 hr |
| Nov 1, 12:49 AM EDT | Areal Flood Warning | BTV | 12 hr |
| Nov 1, 1:26 AM EDT | River Flood Warning | BTV | 21 hr |
| Nov 1, 2:38 AM EDT | River Flood Warning | BTV | 32 hr |
| Nov 1, 11:05 AM EDT | Areal Flood Warning | BTV | 115 min |
| Nov 10, 3:28 AM EST | Winter Storm Watch | BTV | 12 hr |
| Nov 10, 3:05 PM EST | Winter Storm Warning | BTV | 45 hr |
| Nov 15, 2:34 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Nov 15, 4:53 PM EST | Special Weather Statement | BTV | 52 min |
| Nov 15, 5:34 PM EST | Special Weather Statement | BTV | 41 min |
| Nov 17, 1:32 PM EST | Winter Weather Advisory | BTV | 47 hr |
| Dec 11, 6:52 PM EST | Snow Squall Warning | BTV | 53 min |
| Dec 11, 7:44 PM EST | Snow Squall Warning | BTV | 61 min |
| Dec 11, 8:19 PM EST | Snow Squall Warning | BTV | 56 min |
| Dec 11, 8:50 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 13, 9:47 AM EST | Winter Weather Advisory | BTV | 14 hr |
| Dec 15, 2:21 AM EST | Wind Advisory | BTV | 13 hr |
| Dec 18, 3:26 AM EST | Wind Chill Advisory | BTV | 31 hr |
| Dec 18, 2:28 PM EST | Snow Squall Warning | BTV | 47 min |
| Dec 18, 3:15 PM EST | Snow Squall Warning | BTV | 45 min |
| Dec 18, 3:56 PM EST | Special Weather Statement | BTV | 49 min |
| Dec 18, 4:55 PM EST | Snow Squall Warning | BTV | 50 min |
| Dec 18, 5:40 PM EST | Snow Squall Warning | BTV | 50 min |
| Dec 26, 3:02 AM EST | Winter Weather Advisory | BTV | 32 hr |
| Dec 28, 2:30 PM EST | Winter Storm Watch | BTV | 13 hr |
| Dec 29, 3:57 AM EST | Winter Weather Advisory | BTV | 53 hr |
| Dec 29, 7:28 PM EST | Mesoscale Discussion | SPC | 4 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 archive20182020
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.