Alert archive / Maine / Kennebec County
Weather alerts in Kennebec County, Maine, 2020
150 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Kennebec County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 150
- Warnings
- 41
- Watches
- 14
- Advisories
- 52
- Busiest month
- July42 alerts
- Busiest day
- July 8, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Kennebec County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 20 | 16 | 20% | 14 | 93% | 14 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Gray, ME: tornado warnings | 8 | 2 | 75% | 4 | 50% | 4 min |
| NWS Gray, ME: severe thunderstorm warnings | 158 | 112 | 29% | 277 | 87% | 20 min |
| NWS Gray, ME: flash flood warnings | 26 | 9 | 65% | 14 | 93% | 39 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 10, 3:17 AM EST | Winter Storm Watch | GYX | 24 hr |
| Jan 11, 3:34 AM EST | Winter Storm Warning | GYX | 35 hr |
| Jan 13, 3:48 PM EST | Winter Weather Advisory | GYX | 6 hr |
| Jan 15, 3:05 AM EST | Winter Weather Advisory | GYX | 38 hr |
| Jan 16, 1:48 AM EST | Winter Storm Warning | GYX | 15 hr |
| Jan 17, 2:55 PM EST | Winter Storm Watch | GYX | 12 hr |
| Jan 18, 3:16 AM EST | Winter Weather Advisory | GYX | 28 hr |
| Jan 18, 3:11 PM EST | Winter Storm Warning | GYX | 16 hr |
| Jan 20, 12:03 AM EST | Areal Flood Advisory | GYX | 7 hr |
| Jan 20, 9:11 PM EST | Areal Flood Advisory | GYX | 9 hr |
| Feb 5, 3:54 AM EST | Winter Storm Watch | GYX | 11 hr |
| Feb 5, 3:54 AM EST | Winter Weather Advisory | GYX | 66 hr |
| Feb 7, 10:46 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 7, 3:03 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 7, 5:04 PM EST | Special Weather Statement | GYX | 56 min |
| Feb 12, 2:56 AM EST | Winter Weather Advisory | GYX | 33 hr |
| Feb 17, 3:01 PM EST | Winter Weather Advisory | GYX | 33 hr |
| Feb 26, 3:53 AM EST | Winter Weather Advisory | GYX | 35 hr |
| Mar 3, 2:51 PM EST | Wind Advisory | GYX | 27 hr |
| Mar 23, 3:50 AM EDT | Winter Storm Warning | GYX | 24 hr |
| Mar 23, 3:50 AM EDT | Winter Weather Advisory | GYX | 24 hr |
| Mar 23, 9:33 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 8, 3:49 PM EDT | Winter Storm Warning | GYX | 46 hr |
| Apr 10, 5:50 PM EDT | Special Weather Statement | GYX | 55 min |
| Apr 12, 3:47 AM EDT | High Wind Watch | GYX | 12 hr |
| Apr 12, 3:19 PM EDT | Wind Advisory | GYX | 31 hr |
| Apr 12, 3:32 PM EDT | Flood Watch | GYX | 40 hr |
| Apr 13, 9:24 PM EDT | River Flood Warning | GYX | 37 hr |
| Apr 14, 2:12 PM EDT | River Flood Warning | GYX | 8 hr |
| Apr 26, 3:41 AM EDT | Winter Weather Advisory | GYX | 36 hr |
| May 8, 8:24 PM EDT | Wind Advisory | GYX | 24 hr |
| May 12, 10:07 AM EDT | Wind Advisory | GYX | 5 hr |
| May 12, 3:21 PM EDT | Freeze Warning | GYX | 15 hr |
| May 13, 2:54 PM EDT | Freeze Warning | GYX | 16 hr |
| May 23, 2:58 PM EDT | Frost Advisory | GYX | 16 hr |
| May 25, 10:15 PM EDT | Dense Fog Advisory | GYX | 10 hr |
| Jun 1, 2:41 PM EDT | Frost Advisory | GYX | 16 hr |
| Jun 6, 10:46 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 6, 12:23 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 6, 1:15 PM EDT | Severe Thunderstorm Warning | GYX | 45 min |
| Jun 6, 2:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 6, 3:27 PM EDT | Special Weather Statement | GYX | 33 min |
| Jun 6, 4:08 PM EDT | Special Weather Statement | GYX | 37 min |
| Jun 6, 7:19 PM EDT | Special Weather Statement | GYX | 26 min |
| Jun 6, 7:49 PM EDT | Special Weather Statement | GYX | 26 min |
| Jun 21, 9:01 PM EDT | Dense Fog Advisory | GYX | 10 hr |
| Jun 24, 7:14 AM EDT | Dense Fog Advisory | GYX | 106 min |
| Jun 26, 3:07 PM EDT | Special Weather Statement | GYX | 23 min |
| Jun 28, 3:59 AM EDT | Dense Fog Advisory | GYX | 4 hr |
| Jul 1, 6:18 AM EDT | Areal Flood Advisory | GYX | 3 hr |
| Jul 2, 12:38 AM EDT | Dense Fog Advisory | GYX | 7 hr |
| Jul 2, 2:41 PM EDT | Mesoscale Discussion | SPC | 109 min |
| Jul 2, 4:34 PM EDT | Severe Thunderstorm Warning | GYX | 41 min |
| Jul 2, 5:43 PM EDT | Special Weather Statement | GYX | 32 min |
| Jul 2, 5:50 PM EDT | Severe Thunderstorm Warning | GYX | 40 min |
| Jul 2, 6:05 PM EDT | Special Weather Statement | GYX | 25 min |
| Jul 2, 6:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 6:35 PM EDT | Severe Thunderstorm Warning | GYX | 40 min |
| Jul 5, 2:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 5, 5:32 PM EDT | Special Weather Statement | GYX | 28 min |
| Jul 8, 1:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 8, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 3:16 PM EDT | Severe Thunderstorm Warning | GYX | 44 min |
| Jul 8, 3:54 PM EDT | Severe Thunderstorm Warning | GYX | 51 min |
| Jul 8, 4:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 8, 4:39 PM EDT | Severe Thunderstorm Warning | GYX | 51 min |
| Jul 8, 4:54 PM EDT | Severe Thunderstorm Warning | GYX | 51 min |
| Jul 8, 5:15 PM EDT | Areal Flood Advisory | GYX | 3 hr |
| Jul 8, 5:39 PM EDT | Severe Thunderstorm Warning | GYX | 36 min |
| Jul 8, 6:02 PM EDT | Severe Thunderstorm Warning | GYX | 43 min |
| Jul 8, 6:30 PM EDT | Areal Flood Advisory | GYX | 2 hr |
| Jul 9, 2:18 AM EDT | Dense Fog Advisory | GYX | 7 hr |
| Jul 9, 7:02 PM EDT | Dense Fog Advisory | GYX | 15 hr |
| Jul 10, 3:20 PM EDT | Dense Fog Advisory | GYX | 18 hr |
| Jul 13, 3:58 PM EDT | Special Weather Statement | GYX | 47 min |
| Jul 13, 4:42 PM EDT | Flash Flood Warning | GYX | 110 min |
| Jul 13, 5:03 PM EDT | Special Weather Statement | GYX | 27 min |
| Jul 13, 6:17 PM EDT | Special Weather Statement | GYX | 28 min |
| Jul 14, 12:11 PM EDT | Areal Flood Advisory | GYX | 3 hr |
| Jul 14, 5:27 PM EDT | Areal Flood Advisory | GYX | 2 hr |
| Jul 14, 7:15 PM EDT | Flash Flood Warning | GYX | 104 min |
| Jul 18, 3:27 AM EDT | Dense Fog Advisory | GYX | 4 hr |
| Jul 18, 7:02 AM EDT | Dense Fog Advisory | GYX | 58 min |
| Jul 18, 10:30 AM EDT | Heat Advisory | GYX | 57 hr |
| Jul 20, 3:25 AM EDT | Heat Advisory | GYX | 16 hr |
| Jul 23, 12:58 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 27, 4:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 6:39 PM EDT | Severe Thunderstorm Warning | GYX | 51 min |
| Jul 30, 2:37 PM EDT | Special Weather Statement | GYX | 38 min |
| Jul 30, 4:56 PM EDT | Severe Thunderstorm Warning | GYX | 49 min |
| Aug 3, 5:41 AM EDT | Tropical Storm Watch | GYX | 35 hr |
| Aug 4, 5:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 9, 1:43 PM EDT | Special Weather Statement | GYX | 47 min |
| Aug 9, 3:18 PM EDT | Special Weather Statement | GYX | 27 min |
| Aug 10, 3:27 PM EDT | Heat Advisory | GYX | 29 hr |
| Aug 11, 3:19 AM EDT | Dense Fog Advisory | GYX | 6 hr |
| Aug 18, 2:11 PM EDT | Special Weather Statement | GYX | 49 min |
| Aug 23, 4:07 AM EDT | Dense Fog Advisory | GYX | 3 hr |
| Aug 24, 1:20 PM EDT | Special Weather Statement | GYX | 25 min |
| Aug 24, 1:36 PM EDT | Special Weather Statement | GYX | 24 min |
| Aug 24, 2:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 24, 2:04 PM EDT | Severe Thunderstorm Warning | GYX | 45 min |
| Aug 24, 2:16 PM EDT | Severe Thunderstorm Warning | GYX | 44 min |
| Aug 24, 3:14 PM EDT | Severe Thunderstorm Warning | GYX | 46 min |
| Aug 24, 3:50 PM EDT | Severe Thunderstorm Warning | GYX | 40 min |
| Aug 24, 5:46 PM EDT | Special Weather Statement | GYX | 29 min |
| Aug 24, 11:38 PM EDT | Dense Fog Advisory | GYX | 8 hr |
| Aug 25, 2:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 25, 2:15 PM EDT | Special Weather Statement | GYX | 30 min |
| Aug 25, 2:17 PM EDT | Special Weather Statement | GYX | 28 min |
| Aug 25, 2:34 PM EDT | Severe Thunderstorm Warning | GYX | 41 min |
| Aug 25, 2:48 PM EDT | Severe Thunderstorm Warning | GYX | 42 min |
| Aug 25, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 25, 3:21 PM EDT | Severe Thunderstorm Warning | GYX | 24 min |
| Sep 9, 7:05 AM EDT | Dense Fog Advisory | GYX | 3 hr |
| Sep 9, 2:37 PM EDT | Dense Fog Advisory | GYX | 19 hr |
| Sep 19, 3:02 PM EDT | Freeze Warning | GYX | 16 hr |
| Sep 20, 3:17 PM EDT | Freeze Warning | GYX | 18 hr |
| Sep 26, 4:40 AM EDT | Dense Fog Advisory | GYX | 4 hr |
| Sep 29, 3:04 PM EDT | Wind Advisory | GYX | 23 hr |
| Oct 7, 6:39 PM EDT | Special Weather Statement | GYX | 51 min |
| Oct 10, 8:10 PM EDT | Severe Thunderstorm Warning | GYX | 25 min |
| Oct 10, 8:46 PM EDT | Special Weather Statement | GYX | 44 min |
| Oct 22, 12:28 AM EDT | Dense Fog Advisory | GYX | 8 hr |
| Nov 8, 9:44 PM EST | Dense Fog Advisory | GYX | 12 hr |
| Nov 16, 12:15 AM EST | Special Weather Statement | GYX | 60 min |
| Nov 23, 10:56 AM EST | Areal Flood Advisory | GYX | 3 hr |
| Nov 25, 3:13 PM EST | Winter Weather Advisory | GYX | 21 hr |
| Nov 30, 2:33 AM EST | Wind Advisory | GYX | 28 hr |
| Nov 30, 2:32 PM EST | Flood Watch | GYX | 24 hr |
| Dec 1, 1:28 PM EST | River Flood Warning | GYX | 29 hr |
| Dec 1, 7:23 PM EST | River Flood Warning | GYX | 15 hr |
| Dec 1, 9:42 PM EST | River Flood Warning | GYX | 16 hr |
| Dec 3, 3:57 PM EST | Winter Storm Watch | GYX | 36 hr |
| Dec 4, 4:06 PM EST | Winter Storm Warning | GYX | 42 hr |
| Dec 5, 2:13 PM EST | Special Weather Statement | GYX | 3 hr |
| Dec 13, 6:10 AM EST | Dense Fog Advisory | GYX | 5 hr |
| Dec 13, 12:57 PM EST | Dense Fog Advisory | GYX | 3 hr |
| Dec 16, 3:28 AM EST | Winter Storm Warning | GYX | 39 hr |
| Dec 16, 3:28 AM EST | Winter Weather Advisory | GYX | 30 hr |
| Dec 17, 10:26 AM EST | Special Weather Statement | GYX | 64 min |
| Dec 17, 11:44 AM EST | Special Weather Statement | GYX | 91 min |
| Dec 20, 11:51 PM EST | Dense Fog Advisory | GYX | 9 hr |
| Dec 22, 3:37 PM EST | High Wind Watch | GYX | 48 hr |
| Dec 23, 1:50 PM EST | Flood Watch | GYX | 60 hr |
| Dec 24, 3:39 PM EST | Wind Advisory | GYX | 24 hr |
| Dec 25, 12:03 PM EST | River Flood Warning | GYX | 43 hr |
| Dec 25, 12:03 PM EST | River Flood Warning | GYX | 55 hr |
| Dec 25, 12:03 PM EST | River Flood Warning | GYX | 46 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 20 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 28 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 8 |
| Flood Watch | 3 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Storm Warning | 7 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 4 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Watch | 2 |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 21 |
| Tropical | |
| Tropical Storm Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.