Alert archive / Vermont / Chittenden County
Weather alerts in Chittenden County, Vermont, 2025
145 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Chittenden County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 145
- Warnings
- 47
- Watches
- 8
- Advisories
- 41
- Busiest month
- July28 alerts
- Busiest day
- May 17, 202514 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Chittenden County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 20 | 18 | 10% | 15 | 93% | 24 min |
| Flash flood warnings | 4 | 0 | 100% | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Burlington, VT: tornado warnings | 1 | 0 | 100% | 1 | 0% | |
| NWS Burlington, VT: severe thunderstorm warnings | 62 | 48 | 23% | 93 | 89% | 19 min |
| NWS Burlington, VT: flash flood warnings | 14 | 7 | 50% | 30 | 60% | 88 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 5, 2:40 PM EST | Winter Weather Advisory | BTV | 4 days |
| Jan 13, 2:32 PM EST | Winter Weather Advisory | BTV | 43 hr |
| Jan 17, 2:50 PM EST | Wind Advisory | BTV | 26 hr |
| Jan 28, 3:31 AM EST | Snow Squall Warning | BTV | 59 min |
| Jan 28, 4:20 AM EST | Snow Squall Warning | BTV | 55 min |
| Jan 28, 4:59 AM EST | Snow Squall Warning | BTV | 61 min |
| Jan 28, 9:53 AM EST | Winter Weather Advisory | BTV | 35 hr |
| Jan 29, 9:55 AM EST | Snow Squall Warning | BTV | 65 min |
| Jan 29, 10:40 AM EST | Snow Squall Warning | BTV | 65 min |
| Jan 29, 10:53 AM EST | Snow Squall Warning | BTV | 67 min |
| Jan 29, 11:24 AM EST | Snow Squall Warning | BTV | 66 min |
| Feb 5, 2:39 PM EST | Winter Weather Advisory | BTV | 31 hr |
| Feb 7, 5:17 AM EST | Snow Squall Warning | BTV | 43 min |
| Feb 7, 5:49 AM EST | Snow Squall Warning | BTV | 41 min |
| Feb 7, 6:56 AM EST | Snow Squall Warning | BTV | 34 min |
| Feb 7, 7:26 AM EST | Snow Squall Warning | BTV | 34 min |
| Feb 8, 2:59 AM EST | Winter Weather Advisory | BTV | 30 hr |
| Feb 8, 8:38 AM EST | Special Weather Statement | BTV | 37 min |
| Feb 10, 3:12 AM EST | Special Weather Statement | BTV | 48 min |
| Feb 10, 8:27 AM EST | Special Weather Statement | BTV | 48 min |
| Feb 10, 9:12 AM EST | Special Weather Statement | BTV | 48 min |
| Feb 11, 3:01 PM EST | Special Weather Statement | BTV | 44 min |
| Feb 11, 3:50 PM EST | Special Weather Statement | BTV | 40 min |
| Feb 11, 6:36 PM EST | Special Weather Statement | BTV | 39 min |
| Feb 12, 3:27 PM EST | Wind Advisory | BTV | 20 hr |
| Feb 13, 8:15 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 14, 3:01 AM EST | Winter Storm Watch | BTV | 12 hr |
| Feb 14, 3:13 PM EST | Winter Storm Warning | BTV | 57 hr |
| Feb 15, 2:45 AM EST | High Wind Warning | BTV | 36 hr |
| Feb 15, 2:45 AM EST | Wind Advisory | BTV | 36 hr |
| Feb 16, 8:28 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 3:27 PM EST | Wind Advisory | BTV | 49 hr |
| Feb 17, 12:26 AM EST | Winter Weather Advisory | BTV | 15 hr |
| Feb 17, 3:36 AM EST | Cold Weather Advisory | BTV | 29 hr |
| Mar 6, 3:05 PM EST | Wind Advisory | BTV | 27 hr |
| Mar 7, 5:47 PM EST | Special Weather Statement | BTV | 43 min |
| Mar 7, 6:41 PM EST | Special Weather Statement | BTV | 49 min |
| Mar 14, 2:37 PM EDT | Flood Watch | BTV | 72 hr |
| Mar 15, 2:30 PM EDT | Wind Advisory | BTV | 32 hr |
| Mar 16, 8:08 PM EDT | Special Weather Statement | BTV | 52 min |
| Mar 17, 9:04 AM EDT | River Flood Warning | BTV | 13 hr |
| Mar 17, 10:33 PM EDT | River Flood Warning | BTV | 88 min |
| Mar 26, 10:39 AM EDT | Special Weather Statement | BTV | 51 min |
| Mar 26, 11:22 AM EDT | Special Weather Statement | BTV | 38 min |
| Mar 27, 3:02 PM EDT | Winter Weather Advisory | BTV | 72 hr |
| Mar 28, 3:21 PM EDT | Winter Storm Warning | BTV | 47 hr |
| Mar 29, 1:54 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 2, 2:47 AM EDT | Wind Advisory | BTV | 41 hr |
| Apr 4, 2:39 PM EDT | Wind Advisory | BTV | 35 hr |
| Apr 8, 1:48 PM EDT | Special Weather Statement | BTV | 57 min |
| Apr 30, 3:17 AM EDT | Frost Advisory | BTV | 28 hr |
| May 10, 12:15 PM EDT | Areal Flood Warning | BTV | 4 hr |
| May 11, 2:17 PM EDT | Frost Advisory | BTV | 15 hr |
| May 17, 7:36 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 8:30 AM EDT | Severe Thunderstorm Warning | BTV | 45 min |
| May 17, 12:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 17, 2:29 PM EDT | Special Weather Statement | BTV | 46 min |
| May 17, 2:33 PM EDT | Severe Thunderstorm Warning | BTV | 42 min |
| May 17, 2:41 PM EDT | Severe Thunderstorm Warning | BTV | 64 min |
| May 17, 2:57 PM EDT | Severe Thunderstorm Warning | BTV | 52 min |
| May 17, 3:15 PM EDT | Severe Thunderstorm Warning | BTV | 60 min |
| May 17, 3:31 PM EDT | Flash Flood Warning | BTV | 20 days |
| May 17, 3:36 PM EDT | Severe Thunderstorm Warning | BTV | 39 min |
| May 17, 3:36 PM EDT | Severe Thunderstorm Warning | BTV | 39 min |
| May 17, 4:27 PM EDT | Flash Flood Warning | BTV | 20 days |
| May 17, 4:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 19, 12:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 19, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 19, 2:40 PM EDT | Special Weather Statement | BTV | 50 min |
| Jun 19, 3:44 PM EDT | Severe Thunderstorm Warning | BTV | 46 min |
| Jun 19, 4:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 19, 8:30 PM EDT | Special Weather Statement | BTV | 45 min |
| Jun 21, 3:03 AM EDT | Extreme Heat Watch | BTV | 11 hr |
| Jun 21, 1:34 PM EDT | Heat Advisory | BTV | 3 days |
| Jun 21, 1:34 PM EDT | Extreme Heat Warning | BTV | 3 days |
| Jun 24, 3:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 24, 5:26 PM EDT | Special Weather Statement | BTV | 34 min |
| Jun 24, 5:42 PM EDT | Severe Thunderstorm Warning | BTV | 48 min |
| Jun 24, 5:49 PM EDT | Severe Thunderstorm Warning | BTV | 15 min |
| Jul 3, 11:27 AM EDT | Severe Thunderstorm Warning | BTV | 63 min |
| Jul 3, 12:09 PM EDT | Severe Thunderstorm Warning | BTV | 81 min |
| Jul 3, 12:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 3, 1:01 PM EDT | Special Weather Statement | BTV | 59 min |
| Jul 3, 1:24 PM EDT | Severe Thunderstorm Warning | BTV | 44 min |
| Jul 3, 2:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 3, 5:37 PM EDT | Severe Thunderstorm Warning | BTV | 53 min |
| Jul 3, 6:24 PM EDT | Severe Thunderstorm Warning | BTV | 51 min |
| Jul 3, 6:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 3, 7:10 PM EDT | Severe Thunderstorm Warning | BTV | 80 min |
| Jul 5, 1:27 AM EDT | Heat Advisory | BTV | 42 hr |
| Jul 7, 1:26 AM EDT | Heat Advisory | BTV | 18 hr |
| Jul 7, 4:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 7, 5:00 PM EDT | Special Weather Statement | BTV | 45 min |
| Jul 10, 12:24 PM EDT | Special Weather Statement | BTV | 36 min |
| Jul 10, 3:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 3:24 PM EDT | Severe Thunderstorm Warning | BTV | 66 min |
| Jul 10, 4:41 PM EDT | Severe Thunderstorm Warning | BTV | 47 min |
| Jul 10, 5:50 PM EDT | Severe Thunderstorm Warning | BTV | 55 min |
| Jul 10, 6:45 PM EDT | Special Weather Statement | BTV | 60 min |
| Jul 13, 6:20 PM EDT | Special Weather Statement | BTV | 55 min |
| Jul 14, 12:31 PM EDT | Special Weather Statement | BTV | 44 min |
| Jul 14, 1:13 PM EDT | Special Weather Statement | BTV | 62 min |
| Jul 14, 1:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 15, 1:05 PM EDT | Heat Advisory | BTV | 31 hr |
| Jul 17, 1:09 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 2:28 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 24, 1:48 AM EDT | Heat Advisory | BTV | 18 hr |
| Aug 7, 5:32 PM EDT | Special Weather Statement | BTV | 43 min |
| Aug 7, 5:44 PM EDT | Severe Thunderstorm Warning | BTV | 21 min |
| Aug 10, 2:48 PM EDT | Heat Advisory | BTV | 69 hr |
| Sep 6, 1:10 AM EDT | Special Weather Statement | BTV | 65 min |
| Sep 19, 12:31 AM EDT | Frost Advisory | BTV | 31 hr |
| Sep 20, 1:29 AM EDT | Frost Advisory | BTV | 31 hr |
| Oct 1, 1:47 AM EDT | Frost Advisory | BTV | 30 hr |
| Oct 8, 1:25 PM EDT | Freeze Watch | BTV | 12 hr |
| Oct 8, 1:25 PM EDT | Freeze Warning | BTV | 17 hr |
| Oct 9, 1:05 AM EDT | Freeze Warning | BTV | 31 hr |
| Oct 16, 1:20 AM EDT | Frost Advisory | BTV | 32 hr |
| Oct 17, 1:30 PM EDT | Frost Advisory | BTV | 17 hr |
| Oct 18, 12:38 PM EDT | Fire Weather Watch | BTV | 13 hr |
| Oct 19, 1:05 AM EDT | Wind Advisory | BTV | 29 hr |
| Oct 19, 1:34 AM EDT | Red Flag Warning | BTV | 20 hr |
| Oct 30, 10:02 AM EDT | Wind Advisory | BTV | 16 hr |
| Nov 4, 1:24 PM EST | Wind Advisory | BTV | 35 hr |
| Nov 10, 12:10 PM EST | Winter Weather Advisory | BTV | 13 hr |
| Nov 14, 12:23 PM EST | Winter Weather Advisory | BTV | 41 hr |
| Nov 16, 1:04 AM EST | Winter Storm Warning | BTV | 35 hr |
| Nov 20, 3:41 AM EST | Freezing Fog Advisory | BTV | 5 hr |
| Nov 28, 4:56 AM EST | Special Weather Statement | BTV | 49 min |
| Nov 30, 12:39 AM EST | Wind Advisory | BTV | 12 hr |
| Dec 1, 12:21 PM EST | Winter Weather Advisory | BTV | 31 hr |
| Dec 4, 7:09 AM EST | Special Weather Statement | BTV | 51 min |
| Dec 4, 7:58 AM EST | Special Weather Statement | BTV | 47 min |
| Dec 4, 8:57 AM EST | Special Weather Statement | BTV | 63 min |
| Dec 4, 1:03 PM EST | Special Weather Statement | BTV | 42 min |
| Dec 4, 2:16 PM EST | Snow Squall Warning | BTV | 44 min |
| Dec 9, 1:13 PM EST | Winter Weather Advisory | BTV | 35 hr |
| Dec 17, 12:19 PM EST | Wind Advisory | BTV | 49 hr |
| Dec 19, 12:58 AM EST | High Wind Warning | BTV | 12 hr |
| Dec 19, 11:17 PM EST | Snow Squall Warning | BTV | 58 min |
| Dec 21, 5:55 PM EST | Special Weather Statement | BTV | 50 min |
| Dec 22, 12:20 PM EST | Winter Weather Advisory | BTV | 43 hr |
| Dec 27, 12:04 PM EST | Winter Weather Advisory | BTV | 49 hr |
| Dec 28, 9:40 PM EST | Mesoscale Discussion | SPC | 5 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 archive20242026
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.