Alert archive / Maine / Penobscot County
Weather alerts in Penobscot County, Maine, 2017
148 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 148
- Warnings
- 33
- Watches
- 18
- Advisories
- 52
- Busiest month
- February25 alerts
- Busiest day
- June 12, 20176 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 1 tornado reports fell inside a warning.
Penobscot County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 1 | 0% | |||
| Severe thunderstorm warnings | 18 | 10 | 44% | 19 | 84% | 28 min |
| Flash flood warnings | 1 | 0 | 100% | 1 | 0% |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Caribou, ME: tornado warnings | 0 | 2 | 0% | |||
| NWS Caribou, ME: severe thunderstorm warnings | 40 | 21 | 48% | 52 | 83% | 22 min |
| NWS Caribou, ME: flash flood warnings | 4 | 1 | 75% | 4 | 75% | 85 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, 3:59 AM EST | Winter Storm Watch | CAR | 12 hr |
| Jan 2, 4:07 PM EST | Winter Storm Warning | CAR | 45 hr |
| Jan 2, 4:07 PM EST | Winter Weather Advisory | CAR | 45 hr |
| Jan 4, 2:16 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 8, 8:44 PM EST | Wind Chill Advisory | CAR | 12 hr |
| Jan 10, 4:34 AM EST | Winter Weather Advisory | CAR | 29 hr |
| Jan 10, 3:10 PM EST | Wind Advisory | CAR | 19 hr |
| Jan 13, 4:25 AM EST | Wind Chill Advisory | CAR | 29 hr |
| Jan 22, 3:34 PM EST | Winter Storm Watch | CAR | 24 hr |
| Jan 23, 3:15 PM EST | Winter Storm Warning | CAR | 38 hr |
| Jan 24, 5:44 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 24, 12:12 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 24, 10:00 PM EST | Winter Weather Advisory | CAR | 5 hr |
| Jan 25, 2:36 PM EST | Special Weather Statement | CAR | 114 min |
| Jan 25, 5:02 PM EST | Special Weather Statement | CAR | 73 min |
| Feb 5, 11:06 PM EST | Special Weather Statement | CAR | 54 min |
| Feb 6, 1:40 PM EST | Winter Weather Advisory | CAR | 43 hr |
| Feb 8, 3:11 PM EST | Winter Storm Watch | CAR | 12 hr |
| Feb 8, 3:11 PM EST | Winter Storm Warning | CAR | 35 hr |
| Feb 9, 3:07 AM EST | Winter Weather Advisory | CAR | 23 hr |
| Feb 9, 1:17 PM EST | Special Weather Statement | CAR | 103 min |
| Feb 9, 11:11 PM EST | Wind Chill Advisory | CAR | 11 hr |
| Feb 10, 1:55 AM EST | Winter Weather Advisory | CAR | 14 hr |
| Feb 10, 4:12 PM EST | Winter Storm Watch | CAR | 24 hr |
| Feb 11, 2:04 AM EST | Blizzard Watch | CAR | 14 hr |
| Feb 11, 3:43 PM EST | Blizzard Warning | CAR | 59 hr |
| Feb 11, 3:43 PM EST | Winter Storm Warning | CAR | 59 hr |
| Feb 13, 12:55 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 13, 7:10 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 13, 7:56 AM EST | Special Weather Statement | CAR | 2 hr |
| Feb 13, 9:55 AM EST | Special Weather Statement | CAR | 110 min |
| Feb 13, 11:55 AM EST | Special Weather Statement | CAR | 110 min |
| Feb 14, 3:33 AM EST | Winter Storm Watch | CAR | 23 hr |
| Feb 14, 2:46 PM EST | Winter Storm Warning | CAR | 44 hr |
| Feb 15, 2:57 AM EST | Winter Weather Advisory | CAR | 19 hr |
| Feb 15, 10:18 PM EST | Winter Weather Advisory | CAR | 13 hr |
| Feb 23, 3:03 PM EST | Flood Watch | CAR | 4 days |
| Feb 24, 5:01 AM EST | Freezing Rain Advisory | CAR | 29 hr |
| Feb 24, 10:14 PM EST | Dense Fog Advisory | CAR | 15 hr |
| Feb 25, 5:00 PM EST | Dense Fog Advisory | CAR | 9 hr |
| Mar 3, 3:05 AM EST | Wind Chill Advisory | CAR | 54 hr |
| Mar 4, 2:56 AM EST | Wind Chill Advisory | CAR | 30 hr |
| Mar 7, 3:09 AM EST | Freezing Rain Advisory | CAR | 27 hr |
| Mar 9, 1:51 AM EST | Special Weather Statement | CAR | 84 min |
| Mar 9, 11:03 AM EST | Special Weather Statement | CAR | 27 min |
| Mar 9, 3:11 PM EST | Special Weather Statement | CAR | 64 min |
| Mar 10, 2:48 AM EST | Wind Chill Advisory | CAR | 53 hr |
| Mar 12, 4:25 AM EDT | Winter Storm Watch | CAR | 29 hr |
| Mar 13, 4:19 AM EDT | Winter Storm Warning | CAR | 55 hr |
| Mar 14, 3:34 PM EDT | Blizzard Warning | CAR | 10 hr |
| Mar 14, 5:36 PM EDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 21, 3:28 PM EDT | Wind Advisory | CAR | 30 hr |
| Mar 21, 3:33 PM EDT | Winter Weather Advisory | CAR | 30 hr |
| Mar 22, 8:51 AM EDT | Special Weather Statement | CAR | 54 min |
| Mar 26, 2:39 PM EDT | Winter Weather Advisory | CAR | 31 hr |
| Mar 27, 10:11 PM EDT | Winter Weather Advisory | CAR | 99 min |
| Apr 11, 3:06 PM EDT | Flood Watch | CAR | 37 hr |
| Apr 12, 2:50 PM EDT | River Flood Warning | CAR | 10 days |
| Apr 30, 5:29 PM EDT | Flood Watch | CAR | 51 hr |
| May 20, 3:38 AM EDT | Frost Advisory | CAR | 27 hr |
| Jun 1, 12:06 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 2:17 PM EDT | Severe Thunderstorm Warning | CAR | 43 min |
| Jun 1, 3:03 PM EDT | Special Weather Statement | CAR | 27 min |
| Jun 10, 3:18 PM EDT | Wind Advisory | CAR | 27 hr |
| Jun 12, 3:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 12, 4:21 PM EDT | Severe Thunderstorm Warning | CAR | 54 min |
| Jun 12, 4:57 PM EDT | Severe Thunderstorm Warning | CAR | 63 min |
| Jun 12, 5:25 PM EDT | Severe Thunderstorm Warning | CAR | 36 min |
| Jun 12, 5:43 PM EDT | Severe Thunderstorm Warning | CAR | 62 min |
| Jun 12, 6:38 PM EDT | Severe Thunderstorm Warning | CAR | 67 min |
| Jun 18, 3:03 AM EDT | Flash Flood Watch | CAR | 63 hr |
| Jun 19, 12:24 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 19, 5:10 PM EDT | Areal Flood Advisory | CAR | 65 min |
| Jun 19, 5:11 PM EDT | Special Weather Statement | CAR | 34 min |
| Jun 27, 5:09 PM EDT | Special Weather Statement | CAR | 36 min |
| Jul 7, 6:26 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 8, 1:24 PM EDT | Special Weather Statement | CAR | 66 min |
| Jul 8, 3:30 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 9, 4:14 PM EDT | Special Weather Statement | CAR | 61 min |
| Jul 16, 5:05 AM EDT | Dense Fog Advisory | CAR | 4 hr |
| Jul 17, 12:39 PM EDT | Severe Thunderstorm Warning | CAR | 36 min |
| Jul 20, 1:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 7:11 PM EDT | Severe Thunderstorm Warning | CAR | 49 min |
| Jul 20, 7:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 20, 9:15 PM EDT | Special Weather Statement | CAR | 45 min |
| Jul 21, 12:00 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 21, 2:32 PM EDT | Severe Thunderstorm Warning | CAR | 43 min |
| Jul 28, 3:10 AM EDT | Dense Fog Advisory | CAR | 5 hr |
| Aug 3, 1:38 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Aug 3, 1:42 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Aug 3, 1:49 PM EDT | Severe Thunderstorm Warning | CAR | 56 min |
| Aug 3, 2:27 PM EDT | Flash Flood Warning | CAR | 6 hr |
| Aug 3, 4:22 PM EDT | Areal Flood Advisory | CAR | 113 min |
| Aug 5, 10:52 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Aug 11, 4:44 PM EDT | Severe Thunderstorm Warning | CAR | 46 min |
| Aug 13, 11:24 AM EDT | Special Weather Statement | CAR | 36 min |
| Aug 13, 12:28 PM EDT | Special Weather Statement | CAR | 47 min |
| Aug 15, 8:41 PM EDT | Severe Thunderstorm Warning | CAR | 49 min |
| Sep 1, 3:51 PM EDT | Wind Advisory | CAR | 4 hr |
| Sep 5, 7:07 PM EDT | Severe Thunderstorm Warning | CAR | 53 min |
| Sep 5, 7:58 PM EDT | Severe Thunderstorm Warning | CAR | 35 min |
| Sep 5, 8:36 PM EDT | Severe Thunderstorm Warning | CAR | 54 min |
| Sep 18, 6:37 AM EDT | Dense Fog Advisory | CAR | 83 min |
| Sep 18, 8:15 AM EDT | Dense Fog Advisory | CAR | 105 min |
| Sep 18, 5:50 PM EDT | Dense Fog Advisory | CAR | 16 hr |
| Sep 27, 7:40 PM EDT | Severe Thunderstorm Warning | CAR | 65 min |
| Sep 27, 8:12 PM EDT | Severe Thunderstorm Warning | CAR | 63 min |
| Sep 28, 2:35 AM EDT | Special Weather Statement | CAR | 25 min |
| Sep 28, 3:12 AM EDT | Special Weather Statement | CAR | 33 min |
| Sep 28, 3:17 AM EDT | Severe Thunderstorm Warning | CAR | 28 min |
| Sep 29, 3:19 AM EDT | Freeze Watch | CAR | 12 hr |
| Sep 29, 3:16 PM EDT | Freeze Warning | CAR | 17 hr |
| Sep 30, 3:19 PM EDT | Frost Advisory | CAR | 17 hr |
| Sep 30, 3:19 PM EDT | Freeze Warning | CAR | 17 hr |
| Oct 2, 2:50 AM EDT | Frost Advisory | CAR | 29 hr |
| Oct 4, 11:26 PM EDT | Special Weather Statement | CAR | 49 min |
| Oct 8, 2:17 PM EDT | Special Weather Statement | CAR | 58 min |
| Oct 15, 4:14 AM EDT | Wind Advisory | CAR | 26 hr |
| Oct 23, 11:17 PM EDT | Dense Fog Advisory | CAR | 6 hr |
| Oct 25, 3:16 PM EDT | Flash Flood Watch | CAR | 27 hr |
| Oct 27, 3:34 PM EDT | High Wind Watch | CAR | 36 hr |
| Oct 29, 3:26 AM EDT | High Wind Warning | CAR | 34 hr |
| Oct 30, 1:14 PM EDT | Wind Advisory | CAR | 9 hr |
| Nov 9, 4:06 AM EST | Wind Advisory | CAR | 40 hr |
| Nov 10, 3:51 AM EST | Special Weather Statement | CAR | 114 min |
| Nov 10, 5:43 AM EST | Special Weather Statement | CAR | 2 hr |
| Nov 18, 4:14 PM EST | Winter Weather Advisory | CAR | 16 hr |
| Dec 4, 2:09 PM EST | Wind Advisory | CAR | 43 hr |
| Dec 8, 3:54 AM EST | Winter Storm Watch | CAR | 23 hr |
| Dec 9, 3:09 AM EST | Winter Weather Advisory | CAR | 30 hr |
| Dec 10, 4:05 PM EST | Winter Storm Watch | CAR | 24 hr |
| Dec 11, 4:00 PM EST | Winter Weather Advisory | CAR | 35 hr |
| Dec 20, 7:01 AM EST | Special Weather Statement | CAR | 44 min |
| Dec 21, 4:07 PM EST | Winter Weather Advisory | CAR | 54 hr |
| Dec 23, 9:50 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 1:49 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 23, 3:16 PM EST | Winter Storm Watch | CAR | 12 hr |
| Dec 23, 6:49 PM EST | Special Weather Statement | CAR | 116 min |
| Dec 24, 3:45 AM EST | Winter Storm Warning | CAR | 39 hr |
| Dec 25, 7:02 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 25, 10:41 AM EST | Special Weather Statement | CAR | 64 min |
| Dec 25, 12:08 PM EST | Special Weather Statement | CAR | 67 min |
| Dec 25, 12:50 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 25, 1:17 PM EST | Special Weather Statement | CAR | 73 min |
| Dec 26, 3:42 AM EST | Wind Chill Advisory | CAR | 3 days |
| Dec 27, 3:41 AM EST | Wind Chill Advisory | CAR | 54 hr |
| Dec 30, 3:16 AM EST | Wind Chill Advisory | CAR | 3 days |
| Dec 31, 2:57 PM EST | Wind Chill Warning | CAR | 40 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 archive20162018
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.