Alert archive / Maine / Knox County
Weather alerts in Knox County, Maine, 2026
43 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Knox County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 43
- Warnings
- 10
- Watches
- 4
- Advisories
- 19
- Busiest month
- June10 alerts
- Busiest day
- July 16, 20263 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Knox County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 4 | 33% | 8 | 100% | 27 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Gray, ME: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS Gray, ME: severe thunderstorm warnings | 70 | 56 | 20% | 281 | 87% | 23 min |
| NWS Gray, ME: flash flood warnings | 5 | 1 | 80% | 16 | 56% | 106 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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, 11:42 PM EST | Winter Weather Advisory | GYX | 40 hr |
| Jan 10, 12:30 AM EST | Winter Weather Advisory | GYX | 35 hr |
| Jan 15, 4:49 AM EST | Dense Fog Advisory | GYX | 6 hr |
| Jan 18, 12:11 AM EST | Winter Weather Advisory | GYX | 36 hr |
| Jan 22, 11:57 AM EST | Winter Storm Watch | GYX | 49 hr |
| Jan 22, 12:38 PM EST | Cold Weather Advisory | GYX | 45 hr |
| Jan 24, 12:39 PM EST | Winter Storm Warning | GYX | 60 hr |
| Jan 25, 7:26 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 2, 5:47 AM EST | Coastal Flood Statement | GYX | 7 hr |
| Feb 9, 12:50 PM EST | Winter Weather Advisory | GYX | 47 hr |
| Feb 19, 12:54 PM EST | Winter Weather Advisory | GYX | 42 hr |
| Feb 21, 12:39 PM EST | Winter Storm Watch | GYX | 13 hr |
| Feb 22, 1:37 AM EST | Blizzard Warning | GYX | 44 hr |
| Feb 22, 1:37 AM EST | Winter Storm Warning | GYX | 44 hr |
| Mar 13, 2:44 AM EDT | Winter Weather Advisory | GYX | 31 hr |
| Mar 15, 1:02 PM EDT | Flood Watch | GYX | 55 hr |
| Mar 15, 1:05 PM EDT | Wind Advisory | GYX | 44 hr |
| Mar 21, 2:18 PM EDT | Winter Weather Advisory | GYX | 39 hr |
| May 8, 2:25 PM EDT | Frost Advisory | GYX | 16 hr |
| May 12, 2:05 PM EDT | Frost Advisory | GYX | 18 hr |
| May 15, 2:25 PM EDT | Beach Hazards Statement | GYX | 30 hr |
| May 17, 2:25 AM EDT | Beach Hazards Statement | GYX | 18 hr |
| May 23, 2:38 AM EDT | Beach Hazards Statement | GYX | 17 hr |
| Jun 4, 2:44 PM EDT | Beach Hazards Statement | GYX | 29 hr |
| Jun 12, 2:38 PM EDT | Beach Hazards Statement | GYX | 29 hr |
| Jun 12, 7:30 PM EDT | Dense Fog Advisory | GYX | 12 hr |
| Jun 13, 8:01 PM EDT | Beach Hazards Statement | GYX | 24 hr |
| Jun 21, 1:35 PM EDT | Severe Thunderstorm Warning | GYX | 40 min |
| Jun 26, 10:19 PM EDT | Dense Fog Advisory | GYX | 10 hr |
| Jun 28, 2:35 AM EDT | Dense Fog Advisory | GYX | 5 hr |
| Jun 29, 2:18 AM EDT | Extreme Heat Watch | GYX | 59 hr |
| Jun 30, 1:57 PM EDT | Heat Advisory | GYX | 3 days |
| Jun 30, 1:57 PM EDT | Extreme Heat Warning | GYX | 3 days |
| Jul 16, 1:37 PM EDT | Severe Thunderstorm Warning | GYX | 53 min |
| Jul 16, 1:49 PM EDT | Severe Thunderstorm Warning | GYX | 56 min |
| Jul 16, 2:20 PM EDT | Severe Thunderstorm Warning | GYX | 25 min |
| Jul 18, 2:42 AM EDT | Rip Current Statement | GYX | 17 hr |
| Jul 22, 2:27 AM EDT | High Surf Advisory | GYX | 18 hr |
| Jul 24, 2:34 AM EDT | Beach Hazards Statement | GYX | 17 hr |
| Aug 6, 2:18 PM EDT | Heat Advisory | GYX | 30 hr |
| Aug 13, 4:06 PM EDT | Severe Thunderstorm Warning | GYX | 54 min |
| Aug 13, 5:39 PM EDT | Severe Thunderstorm Warning | GYX | 51 min |
| Sep 24, 2:25 AM EDT | High Surf Advisory | GYX | 4 days |
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 | 6 |
| Mesoscale Discussion | 1 |
| Flooding | |
| Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 7 |
| Heat | |
| Extreme Heat Warning | 1 |
| Extreme Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Cold Weather Advisory | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Coast and beach | |
| High Surf Advisory | 2 |
| Beach Hazards Statement | 7 |
| Coastal Flood Statement | 1 |
| Rip Current Statement | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.