Alert archive / Maine / Penobscot County
Weather alerts in Penobscot County, Maine, 2025
126 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Penobscot County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 126
- Warnings
- 32
- Watches
- 11
- Advisories
- 54
- Busiest month
- July29 alerts
- Busiest day
- July 3, 20257 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Penobscot County in 2025 had a tornado report inside them.
Penobscot County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 16 | 6 | 63% | 11 | 18% | 33 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Caribou, ME: tornado warnings | 6 | 0 | 100% | 0 | ||
| NWS Caribou, ME: severe thunderstorm warnings | 41 | 11 | 73% | 49 | 53% | 31 min |
| NWS Caribou, ME: flash flood warnings | 5 | 2 | 60% | 21 | 19% | 24 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 2, 2:16 AM EST | Wind Advisory | CAR | 19 hr |
| Jan 18, 3:07 AM EST | Winter Storm Watch | CAR | 24 hr |
| Jan 19, 2:52 AM EST | Winter Storm Warning | CAR | 31 hr |
| Jan 19, 2:52 AM EST | Winter Weather Advisory | CAR | 31 hr |
| Jan 20, 3:26 AM EST | Cold Weather Advisory | CAR | 30 hr |
| Jan 21, 3:41 PM EST | Cold Weather Advisory | CAR | 18 hr |
| Jan 28, 5:02 AM EST | Snow Squall Warning | CAR | 58 min |
| Jan 28, 6:01 AM EST | Special Weather Statement | CAR | 59 min |
| Jan 29, 3:58 AM EST | Cold Weather Advisory | CAR | 33 hr |
| Feb 1, 3:06 AM EST | Cold Weather Advisory | CAR | 30 hr |
| Feb 6, 11:47 AM EST | Winter Weather Advisory | CAR | 15 hr |
| Feb 7, 7:13 AM EST | Special Weather Statement | CAR | 62 min |
| Feb 7, 7:20 AM EST | Special Weather Statement | CAR | 55 min |
| Feb 7, 8:09 AM EST | Special Weather Statement | CAR | 66 min |
| Feb 7, 8:43 AM EST | Snow Squall Warning | CAR | 77 min |
| Feb 7, 9:54 AM EST | Snow Squall Warning | CAR | 81 min |
| Feb 11, 3:42 PM EST | Winter Storm Watch | CAR | 12 hr |
| Feb 12, 3:31 AM EST | Winter Storm Warning | CAR | 42 hr |
| Feb 12, 3:31 AM EST | Winter Weather Advisory | CAR | 38 hr |
| Feb 13, 3:25 AM EST | Wind Advisory | CAR | 42 hr |
| Feb 13, 8:15 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 14, 3:22 AM EST | Cold Weather Advisory | CAR | 30 hr |
| Feb 14, 3:42 PM EST | Winter Storm Watch | CAR | 24 hr |
| Feb 15, 2:58 AM EST | Winter Storm Warning | CAR | 58 hr |
| Feb 16, 8:28 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 12:41 AM EST | Special Weather Statement | CAR | 94 min |
| Feb 17, 5:50 AM EST | Wind Advisory | CAR | 18 hr |
| Feb 17, 12:57 PM EST | Winter Weather Advisory | CAR | 18 hr |
| Feb 26, 3:25 PM EST | Winter Weather Advisory | CAR | 28 hr |
| Mar 4, 2:21 PM EST | Winter Weather Advisory | CAR | 30 hr |
| Mar 6, 3:01 PM EST | Winter Weather Advisory | CAR | 39 hr |
| Mar 6, 5:01 PM EST | Dense Fog Advisory | CAR | 7 hr |
| Mar 6, 9:44 PM EST | Winter Storm Warning | CAR | 21 hr |
| Mar 8, 1:44 PM EST | Winter Weather Advisory | CAR | 5 hr |
| Mar 18, 3:16 PM EDT | Areal Flood Advisory | CAR | 114 min |
| Mar 23, 3:48 PM EDT | Winter Weather Advisory | CAR | 32 hr |
| Mar 24, 2:46 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 29, 3:50 AM EDT | Winter Weather Advisory | CAR | 57 hr |
| Mar 31, 8:12 PM EDT | Dense Fog Advisory | CAR | 7 hr |
| Apr 2, 3:24 AM EDT | Winter Weather Advisory | CAR | 36 hr |
| Apr 4, 2:54 PM EDT | Winter Weather Advisory | CAR | 41 hr |
| Apr 7, 4:31 AM EDT | Winter Weather Advisory | CAR | 47 hr |
| Apr 19, 3:23 PM EDT | Wind Advisory | CAR | 27 hr |
| Apr 27, 2:03 AM EDT | Dense Fog Advisory | CAR | 3 hr |
| May 3, 4:01 AM EDT | Dense Fog Advisory | CAR | 5 hr |
| May 11, 3:07 PM EDT | Frost Advisory | CAR | 15 hr |
| May 16, 1:20 AM EDT | Dense Fog Advisory | CAR | 8 hr |
| May 23, 4:47 AM EDT | Areal Flood Advisory | CAR | 99 min |
| Jun 5, 2:47 PM EDT | Special Weather Statement | CAR | 43 min |
| Jun 5, 5:18 PM EDT | Severe Thunderstorm Warning | CAR | 42 min |
| Jun 5, 5:58 PM EDT | Severe Thunderstorm Warning | CAR | 62 min |
| Jun 19, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 7:14 PM EDT | Severe Thunderstorm Warning | CAR | 61 min |
| Jun 19, 7:23 PM EDT | Severe Thunderstorm Warning | CAR | 67 min |
| Jun 19, 8:43 PM EDT | Severe Thunderstorm Warning | CAR | 62 min |
| Jun 19, 9:11 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jun 21, 1:48 PM EDT | Extreme Heat Watch | CAR | 50 hr |
| Jun 23, 3:18 PM EDT | Heat Advisory | CAR | 29 hr |
| Jun 23, 3:18 PM EDT | Extreme Heat Warning | CAR | 29 hr |
| Jul 1, 4:13 AM EDT | Dense Fog Advisory | CAR | 6 hr |
| Jul 3, 10:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 3, 10:38 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 3, 12:16 PM EDT | Severe Thunderstorm Warning | CAR | 44 min |
| Jul 3, 12:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 3, 2:02 PM EDT | Severe Thunderstorm Warning | CAR | 43 min |
| Jul 3, 3:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 3, 3:33 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 6, 3:56 PM EDT | Severe Thunderstorm Warning | CAR | 49 min |
| Jul 6, 4:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 6, 7:20 PM EDT | Severe Thunderstorm Warning | CAR | 55 min |
| Jul 7, 10:04 AM EDT | Heat Advisory | CAR | 10 hr |
| Jul 7, 3:12 PM EDT | Special Weather Statement | CAR | 48 min |
| Jul 7, 4:00 PM EDT | Severe Thunderstorm Warning | CAR | 45 min |
| Jul 7, 4:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 7, 4:36 PM EDT | Severe Thunderstorm Warning | CAR | 39 min |
| Jul 7, 5:50 PM EDT | Special Weather Statement | CAR | 40 min |
| Jul 7, 8:19 PM EDT | Areal Flood Advisory | CAR | 6 hr |
| Jul 14, 4:20 PM EDT | Areal Flood Advisory | CAR | 86 min |
| Jul 15, 4:15 AM EDT | Dense Fog Advisory | CAR | 5 hr |
| Jul 16, 9:17 PM EDT | Dense Fog Advisory | CAR | 11 hr |
| Jul 17, 1:09 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 6:00 PM EDT | Severe Thunderstorm Warning | CAR | 45 min |
| Jul 17, 6:09 PM EDT | Severe Thunderstorm Warning | CAR | 66 min |
| Jul 17, 6:18 PM EDT | Tornado Warning | CAR | 27 min |
| Jul 17, 6:35 PM EDT | Tornado Warning | CAR | 25 min |
| Jul 30, 12:01 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 30, 3:26 PM EDT | Severe Thunderstorm Warning | CAR | 30 min |
| Jul 30, 6:04 PM EDT | Severe Thunderstorm Warning | CAR | 41 min |
| Aug 10, 1:48 PM EDT | Heat Advisory | CAR | 3 days |
| Aug 14, 3:41 PM EDT | Severe Thunderstorm Warning | CAR | 49 min |
| Sep 6, 11:56 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Sep 6, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 6, 3:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Sep 8, 1:50 AM EDT | Frost Advisory | CAR | 30 hr |
| Sep 18, 2:07 PM EDT | Fire Weather Watch | CAR | 12 hr |
| Sep 19, 1:43 AM EDT | Frost Advisory | CAR | 30 hr |
| Sep 20, 1:46 AM EDT | Frost Advisory | CAR | 30 hr |
| Sep 20, 1:46 AM EDT | Freeze Warning | CAR | 30 hr |
| Oct 1, 12:39 AM EDT | Frost Advisory | CAR | 29 hr |
| Oct 8, 1:57 PM EDT | Freeze Watch | CAR | 12 hr |
| Oct 9, 1:46 AM EDT | Freeze Warning | CAR | 30 hr |
| Oct 10, 1:41 PM EDT | Frost Advisory | CAR | 18 hr |
| Oct 20, 5:49 PM EDT | Special Weather Statement | CAR | 56 min |
| Nov 3, 12:34 PM EST | Wind Advisory | CAR | 30 hr |
| Nov 9, 1:48 AM EST | Winter Weather Advisory | CAR | 29 hr |
| Nov 14, 12:11 PM EST | Winter Storm Watch | CAR | 12 hr |
| Nov 15, 12:12 AM EST | Winter Weather Advisory | CAR | 61 hr |
| Nov 28, 1:48 PM EST | Special Weather Statement | CAR | 42 min |
| Nov 30, 12:49 PM EST | Winter Storm Watch | CAR | 24 hr |
| Dec 1, 12:58 PM EST | Winter Storm Warning | CAR | 41 hr |
| Dec 1, 12:58 PM EST | Winter Weather Advisory | CAR | 41 hr |
| Dec 4, 11:17 AM EST | Special Weather Statement | CAR | 58 min |
| Dec 4, 6:36 PM EST | Special Weather Statement | CAR | 39 min |
| Dec 4, 7:14 PM EST | Special Weather Statement | CAR | 46 min |
| Dec 4, 7:30 PM EST | Special Weather Statement | CAR | 45 min |
| Dec 4, 8:05 PM EST | Special Weather Statement | CAR | 40 min |
| Dec 9, 12:47 PM EST | Winter Weather Advisory | CAR | 38 hr |
| Dec 18, 12:42 AM EST | High Wind Warning | CAR | 43 hr |
| Dec 18, 12:42 AM EST | Wind Advisory | CAR | 43 hr |
| Dec 18, 12:45 PM EST | Wind Advisory | CAR | 45 hr |
| Dec 21, 11:02 AM EST | Snow Squall Warning | CAR | 58 min |
| Dec 21, 11:57 AM EST | Special Weather Statement | CAR | 48 min |
| Dec 22, 12:15 PM EST | Winter Weather Advisory | CAR | 48 hr |
| Dec 27, 12:38 PM EST | Winter Storm Watch | CAR | 24 hr |
| Dec 28, 12:39 PM EST | Winter Storm Warning | CAR | 24 hr |
| Dec 28, 12:39 PM EST | Winter Weather Advisory | CAR | 42 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 | 16 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 16 |
| Flooding | |
| Areal Flood Advisory | 6 |
| Winter | |
| Snow Squall Warning | 4 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 19 |
| Heat | |
| Extreme Heat Warning | 1 |
| Extreme Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 5 |
| Frost Advisory | 6 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 7 |
| Fire | |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
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.