Alert archive / Maine / Penobscot County
Weather alerts in Penobscot County, Maine, 2019
175 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 175
- Warnings
- 44
- Watches
- 16
- Advisories
- 71
- Busiest month
- July35 alerts
- Busiest day
- July 2, 201910 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Penobscot County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 23 | 13 | 43% | 21 | 86% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Caribou, ME: tornado warnings | 0 | 1 | 0% | |||
| NWS Caribou, ME: severe thunderstorm warnings | 53 | 23 | 57% | 58 | 72% | 20 min |
| NWS Caribou, ME: flash flood warnings | 2 | 1 | 50% | 1 | 100% | 14 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 |
|---|---|---|---|
| Dec 31, 10:15 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 3, 12:00 AM EST | Winter Weather Advisory | CAR | 14 hr |
| Jan 7, 3:22 AM EST | Winter Weather Advisory | CAR | 69 hr |
| Jan 7, 4:26 PM EST | Winter Storm Watch | CAR | 24 hr |
| Jan 8, 4:30 PM EST | Winter Storm Warning | CAR | 32 hr |
| Jan 11, 3:03 AM EST | Wind Chill Advisory | CAR | 31 hr |
| Jan 16, 3:32 AM EST | Wind Chill Advisory | CAR | 29 hr |
| Jan 16, 5:36 PM EST | Snow Squall Warning | CAR | 39 min |
| Jan 16, 6:16 PM EST | Snow Squall Warning | CAR | 44 min |
| Jan 16, 7:11 PM EST | Special Weather Statement | CAR | 19 min |
| Jan 17, 3:14 PM EST | Wind Chill Advisory | CAR | 45 hr |
| Jan 17, 3:14 PM EST | Winter Storm Watch | CAR | 25 hr |
| Jan 18, 3:51 PM EST | Winter Storm Warning | CAR | 69 hr |
| Jan 20, 6:42 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 20, 1:01 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 21, 10:07 AM EST | Winter Weather Advisory | CAR | 17 hr |
| Jan 21, 3:37 PM EST | Wind Chill Advisory | CAR | 21 hr |
| Jan 22, 3:37 PM EST | Winter Weather Advisory | CAR | 45 hr |
| Jan 23, 3:19 PM EST | Wind Advisory | CAR | 29 hr |
| Jan 24, 7:11 AM EST | Winter Weather Advisory | CAR | 6 hr |
| Jan 24, 4:04 PM EST | Areal Flood Advisory | CAR | 7 hr |
| Jan 27, 9:21 PM EST | Special Weather Statement | CAR | 114 min |
| Jan 27, 10:31 PM EST | Special Weather Statement | CAR | 44 min |
| Jan 28, 4:02 AM EST | Winter Storm Watch | CAR | 24 hr |
| Jan 28, 2:48 PM EST | Winter Storm Warning | CAR | 48 hr |
| Jan 29, 4:16 AM EST | Winter Weather Advisory | CAR | 35 hr |
| Jan 31, 3:46 PM EST | Wind Chill Advisory | CAR | 19 hr |
| Feb 1, 11:49 AM EST | Wind Chill Advisory | CAR | 18 hr |
| Feb 3, 3:40 PM EST | Winter Weather Advisory | CAR | 11 hr |
| Feb 4, 3:58 PM EST | Winter Weather Advisory | CAR | 17 hr |
| Feb 6, 2:51 PM EST | Winter Weather Advisory | CAR | 46 hr |
| Feb 8, 3:23 AM EST | Wind Advisory | CAR | 39 hr |
| Feb 9, 8:03 AM EST | Special Weather Statement | CAR | 117 min |
| Feb 10, 4:08 PM EST | Winter Storm Watch | CAR | 35 hr |
| Feb 11, 4:00 PM EST | Winter Storm Warning | CAR | 50 hr |
| Feb 12, 11:21 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Feb 13, 1:46 PM EST | Special Weather Statement | CAR | 3 hr |
| Feb 14, 3:46 PM EST | Winter Weather Advisory | CAR | 36 hr |
| Feb 18, 3:20 AM EST | Wind Chill Advisory | CAR | 30 hr |
| Feb 20, 3:38 AM EST | Winter Weather Advisory | CAR | 37 hr |
| Feb 22, 3:14 PM EST | Winter Storm Watch | CAR | 13 hr |
| Feb 23, 3:54 AM EST | Winter Storm Warning | CAR | 54 hr |
| Feb 23, 3:54 AM EST | Winter Weather Advisory | CAR | 50 hr |
| Feb 25, 3:16 AM EST | Wind Advisory | CAR | 45 hr |
| Feb 25, 5:31 AM EST | Wind Chill Advisory | CAR | 33 hr |
| Feb 26, 2:59 AM EST | Wind Chill Advisory | CAR | 31 hr |
| Feb 26, 2:53 PM EST | Winter Weather Advisory | CAR | 9 hr |
| Mar 2, 3:23 AM EST | Winter Storm Watch | CAR | 24 hr |
| Mar 3, 2:56 AM EST | Winter Storm Warning | CAR | 37 hr |
| Mar 3, 2:56 AM EST | Winter Weather Advisory | CAR | 37 hr |
| Mar 4, 6:36 PM EST | Special Weather Statement | CAR | 69 min |
| Mar 9, 4:09 PM EST | Winter Weather Advisory | CAR | 34 hr |
| Mar 15, 6:56 PM EDT | Dense Fog Advisory | CAR | 13 hr |
| Apr 2, 9:14 PM EDT | Winter Weather Advisory | CAR | 19 hr |
| Apr 3, 4:20 PM EDT | Wind Advisory | CAR | 27 hr |
| Apr 6, 3:05 PM EDT | Winter Storm Watch | CAR | 24 hr |
| Apr 7, 3:31 PM EDT | Winter Storm Warning | CAR | 36 hr |
| Apr 7, 3:31 PM EDT | Winter Weather Advisory | CAR | 36 hr |
| Apr 8, 3:00 PM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 9, 9:03 AM EDT | Winter Weather Advisory | CAR | 21 hr |
| Apr 15, 2:57 AM EDT | Flood Watch | CAR | 3 days |
| Apr 16, 6:10 AM EDT | River Flood Warning | CAR | 15 days |
| Apr 19, 3:07 AM EDT | Flood Watch | CAR | 4 days |
| Apr 20, 1:56 PM EDT | River Flood Warning | CAR | 66 hr |
| Apr 21, 4:55 AM EDT | River Flood Warning | CAR | 21 days |
| Apr 21, 11:01 AM EDT | Areal Flood Advisory | CAR | 6 hr |
| Apr 21, 11:57 AM EDT | Areal Flood Warning | CAR | 18 hr |
| Apr 21, 5:02 PM EDT | Areal Flood Advisory | CAR | 24 hr |
| Apr 21, 11:37 PM EDT | Dense Fog Advisory | CAR | 9 hr |
| Apr 22, 4:37 PM EDT | Areal Flood Advisory | CAR | 42 hr |
| Apr 26, 12:33 PM EDT | Flood Watch | CAR | 33 hr |
| Apr 28, 4:06 AM EDT | Areal Flood Advisory | CAR | 11 hr |
| May 20, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 27, 4:16 AM EDT | Frost Advisory | CAR | 26 hr |
| May 31, 5:35 PM EDT | Frost Advisory | CAR | 12 hr |
| Jun 14, 7:47 PM EDT | Special Weather Statement | CAR | 43 min |
| Jun 19, 12:29 AM EDT | Dense Fog Advisory | CAR | 6 hr |
| Jun 27, 3:54 PM EDT | Severe Thunderstorm Warning | CAR | 66 min |
| Jun 27, 4:57 PM EDT | Severe Thunderstorm Warning | CAR | 48 min |
| Jun 27, 9:56 PM EDT | Special Weather Statement | CAR | 49 min |
| Jun 27, 11:01 PM EDT | Special Weather Statement | CAR | 74 min |
| Jul 2, 11:51 AM EDT | Special Weather Statement | CAR | 39 min |
| Jul 2, 11:52 AM EDT | Severe Thunderstorm Warning | CAR | 38 min |
| Jul 2, 11:53 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 11:55 AM EDT | Severe Thunderstorm Warning | CAR | 32 min |
| Jul 2, 12:15 PM EDT | Severe Thunderstorm Warning | CAR | 45 min |
| Jul 2, 12:39 PM EDT | Severe Thunderstorm Warning | CAR | 51 min |
| Jul 2, 12:55 PM EDT | Severe Thunderstorm Warning | CAR | 23 min |
| Jul 2, 1:24 PM EDT | Severe Thunderstorm Warning | CAR | 51 min |
| Jul 2, 5:20 PM EDT | Severe Thunderstorm Warning | CAR | 55 min |
| Jul 2, 6:02 PM EDT | Severe Thunderstorm Warning | CAR | 43 min |
| Jul 6, 12:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 12:48 PM EDT | Special Weather Statement | CAR | 42 min |
| Jul 6, 1:08 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 6, 1:13 PM EDT | Severe Thunderstorm Warning | CAR | 62 min |
| Jul 6, 2:22 PM EDT | Severe Thunderstorm Warning | CAR | 38 min |
| Jul 6, 2:41 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 6, 3:09 PM EDT | Severe Thunderstorm Warning | CAR | 51 min |
| Jul 6, 3:36 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 6, 3:39 PM EDT | Severe Thunderstorm Warning | CAR | 66 min |
| Jul 6, 5:06 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 14, 1:46 PM EDT | Severe Thunderstorm Warning | CAR | 32 min |
| Jul 19, 3:42 AM EDT | Heat Advisory | CAR | 38 hr |
| Jul 19, 6:08 PM EDT | Severe Thunderstorm Warning | CAR | 52 min |
| Jul 21, 5:45 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 21, 7:58 AM EDT | Severe Thunderstorm Warning | CAR | 62 min |
| Jul 21, 8:57 AM EDT | Severe Thunderstorm Warning | CAR | 48 min |
| Jul 21, 9:42 AM EDT | Severe Thunderstorm Warning | CAR | 63 min |
| Jul 28, 3:17 PM EDT | Severe Thunderstorm Warning | CAR | 32 min |
| Jul 28, 3:53 PM EDT | Special Weather Statement | CAR | 52 min |
| Jul 28, 4:25 PM EDT | Special Weather Statement | CAR | 35 min |
| Jul 28, 5:01 PM EDT | Severe Thunderstorm Warning | CAR | 44 min |
| Jul 28, 5:50 PM EDT | Special Weather Statement | CAR | 25 min |
| Jul 28, 7:02 PM EDT | Special Weather Statement | CAR | 43 min |
| Jul 29, 1:25 PM EDT | Special Weather Statement | CAR | 50 min |
| Jul 31, 6:49 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jul 31, 8:23 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Aug 3, 2:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 8, 1:43 AM EDT | Areal Flood Advisory | CAR | 3 hr |
| Aug 10, 11:55 AM EDT | Special Weather Statement | CAR | 35 min |
| Aug 10, 1:29 PM EDT | Special Weather Statement | CAR | 31 min |
| Aug 12, 2:06 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 5:04 PM EDT | Severe Thunderstorm Warning | CAR | 51 min |
| Aug 12, 5:21 PM EDT | Severe Thunderstorm Warning | CAR | 69 min |
| Aug 19, 2:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 27, 3:34 PM EDT | Flash Flood Watch | CAR | 45 hr |
| Sep 16, 3:02 PM EDT | Freeze Watch | CAR | 24 hr |
| Sep 17, 2:44 PM EDT | Frost Advisory | CAR | 17 hr |
| Sep 18, 6:13 AM EDT | Frost Advisory | CAR | 26 hr |
| Sep 18, 6:13 AM EDT | Freeze Warning | CAR | 26 hr |
| Sep 24, 1:13 AM EDT | Areal Flood Advisory | CAR | 3 hr |
| Sep 24, 3:01 AM EDT | Areal Flood Advisory | CAR | 3 hr |
| Sep 29, 3:05 AM EDT | Frost Advisory | CAR | 27 hr |
| Oct 2, 3:39 AM EDT | Frost Advisory | CAR | 27 hr |
| Oct 4, 3:18 PM EDT | Frost Advisory | CAR | 16 hr |
| Oct 5, 3:33 PM EDT | Freeze Warning | CAR | 16 hr |
| Oct 16, 2:40 PM EDT | Wind Advisory | CAR | 25 hr |
| Oct 23, 11:27 AM EDT | Areal Flood Advisory | CAR | 3 hr |
| Oct 31, 5:36 AM EDT | High Wind Warning | CAR | 36 hr |
| Oct 31, 5:36 AM EDT | Wind Advisory | CAR | 10 hr |
| Nov 1, 5:59 AM EDT | Special Weather Statement | CAR | 91 min |
| Nov 1, 5:58 PM EDT | Wind Advisory | CAR | 2 hr |
| Nov 6, 9:30 AM EST | Special Weather Statement | CAR | 60 min |
| Nov 6, 9:43 AM EST | Special Weather Statement | CAR | 47 min |
| Nov 6, 10:53 AM EST | Special Weather Statement | CAR | 52 min |
| Nov 8, 11:49 AM EST | Special Weather Statement | CAR | 41 min |
| Nov 8, 1:11 PM EST | Special Weather Statement | CAR | 2 hr |
| Nov 11, 2:57 AM EST | Winter Weather Advisory | CAR | 39 hr |
| Nov 13, 4:04 PM EST | Special Weather Statement | CAR | 71 min |
| Nov 15, 6:17 PM EST | Snow Squall Warning | CAR | 58 min |
| Nov 15, 6:42 PM EST | Special Weather Statement | CAR | 63 min |
| Nov 15, 7:14 PM EST | Snow Squall Warning | CAR | 61 min |
| Nov 17, 3:39 PM EST | Winter Weather Advisory | CAR | 50 hr |
| Nov 21, 3:24 AM EST | Winter Weather Advisory | CAR | 31 hr |
| Nov 23, 2:42 PM EST | Winter Weather Advisory | CAR | 40 hr |
| Nov 27, 4:39 AM EST | Winter Weather Advisory | CAR | 31 hr |
| Nov 28, 7:20 AM EST | Winter Storm Warning | CAR | 4 hr |
| Dec 1, 3:14 PM EST | Winter Storm Watch | CAR | 13 hr |
| Dec 2, 3:52 AM EST | Winter Storm Warning | CAR | 41 hr |
| Dec 3, 6:00 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 3, 8:48 AM EST | Special Weather Statement | CAR | 117 min |
| Dec 3, 9:21 AM EST | Special Weather Statement | CAR | 84 min |
| Dec 3, 11:25 AM EST | Special Weather Statement | CAR | 110 min |
| Dec 3, 12:01 PM EST | Special Weather Statement | CAR | 74 min |
| Dec 3, 12:42 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 8, 3:23 PM EST | Wind Advisory | CAR | 36 hr |
| Dec 9, 3:30 PM EST | Dense Fog Advisory | CAR | 7 hr |
| Dec 13, 10:13 PM EST | Winter Weather Advisory | CAR | 4 hr |
| Dec 14, 3:55 PM EST | Wind Advisory | CAR | 35 hr |
| Dec 18, 5:03 PM EST | Winter Weather Advisory | CAR | 13 hr |
| Dec 26, 3:56 PM EST | Winter Weather Advisory | CAR | 27 hr |
| Dec 27, 11:28 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 29, 3:01 PM EST | Winter Storm Watch | CAR | 12 hr |
| Dec 30, 3:22 AM EST | Winter Storm Warning | CAR | 45 hr |
| Dec 30, 3:22 AM EST | Winter Weather Advisory | CAR | 43 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 | 23 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 30 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 3 |
| Flash Flood Watch | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 14 |
| Winter | |
| Snow Squall Warning | 4 |
| Winter Storm Warning | 10 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 27 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 7 |
| Wind Chill Advisory | 9 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.