Alert archive / Maine / Penobscot County
Weather alerts in Penobscot County, Maine, 2009
154 weather alerts in 2009, 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 2009. Tap one for its archive.
- Alerts
- 154
- Warnings
- 46
- Watches
- 20
- Advisories
- 73
- Busiest month
- December24 alerts
- Busiest day
- June 26, 200912 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 1 tornado warnings covering Penobscot County in 2009 had a tornado report inside them.
Penobscot County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 0 | ||
| Severe thunderstorm warnings | 16 | 8 | 50% | 1 | 100% | 35 min |
| Flash flood warnings | 5 | 3 | 40% | 3 | 100% | 37 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Caribou, ME: tornado warnings | 3 | 3 | 0% | 13 | 92% | 16 min |
| NWS Caribou, ME: severe thunderstorm warnings | 52 | 19 | 63% | 43 | 93% | 28 min |
| NWS Caribou, ME: flash flood warnings | 16 | 8 | 50% | 21 | 100% | 65 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 1, 3:40 PM EST | Wind Chill Advisory | CAR | 15 hr |
| Jan 6, 3:05 AM EST | Winter Storm Watch | CAR | 13 hr |
| Jan 6, 3:40 PM EST | Winter Storm Warning | CAR | 39 hr |
| Jan 6, 3:40 PM EST | Winter Weather Advisory | CAR | 36 hr |
| Jan 7, 11:39 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 14, 4:22 AM EST | Wind Chill Advisory | CAR | 62 hr |
| Jan 17, 4:09 AM EST | Winter Storm Watch | CAR | 11 hr |
| Jan 17, 2:48 PM EST | Winter Storm Warning | CAR | 43 hr |
| Jan 18, 11:35 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 23, 10:41 PM EST | Winter Weather Advisory | CAR | 5 hr |
| Jan 24, 4:06 AM EST | Wind Chill Warning | CAR | 30 hr |
| Jan 24, 4:06 AM EST | Wind Chill Advisory | CAR | 30 hr |
| Jan 26, 3:20 PM EST | Winter Storm Watch | CAR | 20 hr |
| Jan 27, 11:21 AM EST | Winter Storm Warning | CAR | 43 hr |
| Jan 28, 12:26 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 28, 6:12 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 3:25 PM EST | Winter Weather Advisory | CAR | 12 hr |
| Feb 8, 8:11 PM EST | Wind Chill Advisory | CAR | 16 hr |
| Feb 10, 2:46 PM EST | Winter Weather Advisory | CAR | 17 hr |
| Feb 12, 3:47 AM EST | Dense Fog Advisory | CAR | 8 hr |
| Feb 12, 11:00 PM EST | Wind Advisory | CAR | 12 hr |
| Feb 14, 4:20 AM EST | Wind Advisory | CAR | 14 hr |
| Feb 17, 2:57 PM EST | Winter Storm Watch | CAR | 23 hr |
| Feb 18, 2:24 PM EST | Winter Weather Advisory | CAR | 32 hr |
| Feb 19, 12:07 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 19, 4:43 PM EST | Winter Storm Warning | CAR | 5 hr |
| Feb 20, 3:13 PM EST | Winter Storm Watch | CAR | 24 hr |
| Feb 21, 3:35 PM EST | Winter Storm Warning | CAR | 48 hr |
| Feb 22, 6:00 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 23, 12:14 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 4:42 PM EST | Winter Weather Advisory | CAR | 5 hr |
| Feb 26, 3:52 PM EST | High Wind Watch | CAR | 13 hr |
| Feb 27, 4:32 AM EST | Wind Advisory | CAR | 23 hr |
| Feb 27, 5:10 AM EST | Dense Fog Advisory | CAR | 4 hr |
| Feb 28, 2:58 PM EST | Winter Storm Watch | CAR | 31 hr |
| Mar 1, 3:18 PM EST | Winter Storm Warning | CAR | 32 hr |
| Mar 2, 6:38 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 6, 4:23 AM EST | Winter Weather Advisory | CAR | 18 hr |
| Mar 11, 4:02 AM EDT | Winter Weather Advisory | CAR | 10 hr |
| Mar 12, 12:03 AM EDT | Wind Advisory | CAR | 7 hr |
| Mar 28, 4:17 AM EDT | Dense Fog Advisory | CAR | 6 hr |
| Mar 29, 8:12 AM EDT | Dense Fog Advisory | CAR | 2 hr |
| Apr 2, 4:17 PM EDT | Flood Watch | CAR | 70 hr |
| Apr 2, 8:18 PM EDT | Dense Fog Advisory | CAR | 14 hr |
| Apr 4, 7:58 AM EDT | Dense Fog Advisory | CAR | 4 hr |
| Apr 5, 3:53 PM EDT | High Wind Watch | CAR | 12 hr |
| Apr 5, 3:56 PM EDT | Flood Watch | CAR | 3 days |
| Apr 5, 4:48 PM EDT | Areal Flood Warning | CAR | 20 hr |
| Apr 6, 4:03 AM EDT | High Wind Warning | CAR | 26 hr |
| Apr 6, 4:03 AM EDT | Wind Advisory | CAR | 11 hr |
| Apr 6, 4:11 PM EDT | Areal Flood Warning | CAR | 19 hr |
| Apr 7, 1:20 AM EDT | Wind Advisory | CAR | 5 hr |
| Apr 7, 9:15 AM EDT | Areal Flood Warning | CAR | 4 days |
| Apr 7, 11:27 AM EDT | River Flood Warning | CAR | 7 days |
| Apr 23, 4:18 AM EDT | Areal Flood Advisory | CAR | 93 min |
| Apr 23, 4:21 AM EDT | Areal Flood Advisory | CAR | 112 min |
| Apr 23, 5:47 AM EDT | Flash Flood Warning | CAR | 3 hr |
| May 12, 3:13 PM EDT | Frost Advisory | CAR | 12 hr |
| May 13, 2:39 PM EDT | Wind Advisory | CAR | 22 hr |
| May 14, 1:04 PM EDT | High Wind Warning | CAR | 9 hr |
| May 18, 4:47 AM EDT | Frost Advisory | CAR | 24 hr |
| May 18, 4:47 AM EDT | Freeze Warning | CAR | 24 hr |
| May 22, 2:57 PM EDT | Frost Advisory | CAR | 13 hr |
| May 25, 4:00 AM EDT | Frost Advisory | CAR | 23 hr |
| May 25, 4:00 AM EDT | Freeze Warning | CAR | 26 hr |
| May 31, 4:01 PM EDT | Severe Thunderstorm Warning | CAR | 44 min |
| May 31, 4:38 PM EDT | Tornado Warning | CAR | 37 min |
| May 31, 4:48 PM EDT | Severe Thunderstorm Warning | CAR | 27 min |
| Jun 8, 3:14 PM EDT | Frost Advisory | CAR | 14 hr |
| Jun 12, 5:53 AM EDT | Areal Flood Advisory | CAR | 6 hr |
| Jun 14, 2:47 PM EDT | Areal Flood Advisory | CAR | 3 hr |
| Jun 19, 3:05 PM EDT | Areal Flood Advisory | CAR | 7 hr |
| Jun 25, 3:38 AM EDT | Dense Fog Advisory | CAR | 5 hr |
| Jun 25, 9:18 PM EDT | Dense Fog Advisory | CAR | 12 hr |
| Jun 26, 11:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 26, 11:54 AM EDT | Severe Thunderstorm Warning | CAR | 96 min |
| Jun 26, 12:13 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 26, 1:30 PM EDT | Severe Thunderstorm Warning | CAR | 90 min |
| Jun 26, 2:30 PM EDT | Severe Thunderstorm Warning | CAR | 45 min |
| Jun 26, 3:18 PM EDT | Severe Thunderstorm Warning | CAR | 57 min |
| Jun 26, 3:38 PM EDT | Flash Flood Warning | CAR | 92 min |
| Jun 26, 4:18 PM EDT | Severe Thunderstorm Warning | CAR | 57 min |
| Jun 26, 4:28 PM EDT | Severe Thunderstorm Warning | CAR | 62 min |
| Jun 26, 5:18 PM EDT | Severe Thunderstorm Warning | CAR | 42 min |
| Jun 26, 5:57 PM EDT | Flash Flood Warning | CAR | 3 hr |
| Jun 28, 2:29 PM EDT | Flood Watch | CAR | 18 hr |
| Jun 30, 2:53 PM EDT | Dense Fog Advisory | CAR | 15 hr |
| Jul 1, 4:09 PM EDT | Dense Fog Advisory | CAR | 13 hr |
| Jul 3, 2:14 AM EDT | Flash Flood Warning | CAR | 2 hr |
| Jul 4, 3:48 AM EDT | Dense Fog Advisory | CAR | 7 hr |
| Jul 12, 11:29 PM EDT | Areal Flood Advisory | CAR | 27 min |
| Jul 12, 11:54 PM EDT | Flash Flood Warning | CAR | 115 min |
| Jul 23, 3:20 PM EDT | Flood Watch | CAR | 21 hr |
| Jul 26, 8:17 PM EDT | Dense Fog Advisory | CAR | 11 hr |
| Jul 27, 4:59 AM EDT | Severe Thunderstorm Warning | CAR | 61 min |
| Jul 27, 6:20 AM EDT | Severe Thunderstorm Warning | CAR | 32 min |
| Jul 27, 11:02 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 27, 2:42 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 27, 3:22 PM EDT | Severe Thunderstorm Warning | CAR | 38 min |
| Jul 27, 4:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 27, 4:45 PM EDT | Severe Thunderstorm Warning | CAR | 45 min |
| Jul 27, 5:25 PM EDT | Severe Thunderstorm Warning | CAR | 50 min |
| Jul 27, 6:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 27, 6:50 PM EDT | Severe Thunderstorm Warning | CAR | 55 min |
| Jul 29, 4:18 PM EDT | Flash Flood Watch | CAR | 20 hr |
| Jul 30, 8:35 AM EDT | Areal Flood Advisory | CAR | 87 min |
| Jul 30, 10:00 AM EDT | Areal Flood Advisory | CAR | 2 hr |
| Aug 11, 3:32 AM EDT | Dense Fog Advisory | CAR | 5 hr |
| Aug 21, 5:41 PM EDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Aug 21, 5:55 PM EDT | Mesoscale Discussion | SPC | 80 min |
| Aug 27, 3:36 AM EDT | Frost Advisory | CAR | 27 hr |
| Aug 29, 8:15 PM EDT | Areal Flood Warning | CAR | 8 hr |
| Sep 5, 3:08 PM EDT | Frost Advisory | CAR | 16 hr |
| Sep 9, 2:59 PM EDT | Frost Advisory | CAR | 16 hr |
| Sep 15, 3:28 PM EDT | Frost Advisory | CAR | 11 hr |
| Sep 16, 2:51 AM EDT | Frost Advisory | CAR | 13 hr |
| Sep 16, 2:51 AM EDT | Freeze Warning | CAR | 29 hr |
| Sep 19, 3:47 PM EDT | Frost Advisory | CAR | 14 hr |
| Sep 19, 3:47 PM EDT | Freeze Warning | CAR | 14 hr |
| Sep 25, 3:31 AM EDT | Frost Advisory | CAR | 6 hr |
| Sep 25, 3:31 AM EDT | Freeze Warning | CAR | 28 hr |
| Oct 3, 3:15 PM EDT | Flood Watch | CAR | 24 hr |
| Oct 7, 4:32 PM EDT | Areal Flood Advisory | CAR | 109 min |
| Oct 23, 3:10 PM EDT | Winter Weather Advisory | CAR | 21 hr |
| Oct 23, 4:08 PM EDT | Wind Advisory | CAR | 36 hr |
| Oct 31, 2:59 AM EDT | Wind Advisory | CAR | 21 hr |
| Nov 5, 1:20 PM EST | Winter Weather Advisory | CAR | 12 hr |
| Nov 26, 9:56 PM EST | Dense Fog Advisory | CAR | 5 hr |
| Nov 28, 3:45 AM EST | Wind Advisory | CAR | 14 hr |
| Nov 30, 8:36 AM EST | Winter Weather Advisory | CAR | 4 hr |
| Dec 3, 3:37 AM EST | Winter Weather Advisory | CAR | 9 hr |
| Dec 3, 3:51 AM EST | High Wind Warning | CAR | 11 hr |
| Dec 3, 3:51 AM EST | Wind Advisory | CAR | 7 hr |
| Dec 3, 11:55 AM EST | Areal Flood Warning | CAR | 4 hr |
| Dec 3, 12:14 PM EST | Severe Thunderstorm Warning | CAR | 46 min |
| Dec 5, 2:19 PM EST | Winter Weather Advisory | CAR | 17 hr |
| Dec 8, 5:01 AM EST | Winter Storm Watch | CAR | 11 hr |
| Dec 8, 3:33 PM EST | Winter Storm Warning | CAR | 35 hr |
| Dec 9, 6:33 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 9, 12:41 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 11, 3:49 AM EST | Wind Advisory | CAR | 15 hr |
| Dec 13, 2:37 PM EST | Winter Weather Advisory | CAR | 11 hr |
| Dec 15, 4:06 AM EST | Winter Weather Advisory | CAR | 21 hr |
| Dec 16, 3:46 AM EST | Wind Chill Advisory | CAR | 54 hr |
| Dec 21, 5:12 AM EST | Winter Weather Advisory | CAR | 8 hr |
| Dec 21, 3:34 PM EST | Winter Storm Watch | CAR | 12 hr |
| Dec 22, 3:50 AM EST | Winter Storm Warning | CAR | 39 hr |
| Dec 22, 3:38 PM EST | Winter Weather Advisory | CAR | 27 hr |
| Dec 26, 4:00 PM EST | Winter Weather Advisory | CAR | 27 hr |
| Dec 27, 3:31 PM EST | Winter Storm Watch | CAR | 13 hr |
| Dec 28, 4:19 AM EST | Winter Storm Warning | CAR | 27 hr |
| Dec 28, 4:19 AM EST | Winter Weather Advisory | CAR | 27 hr |
| Dec 29, 3:56 AM EST | Wind Chill Advisory | CAR | 32 hr |
| Dec 29, 4:10 AM EST | Wind Advisory | CAR | 24 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 | 1 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 15 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 5 |
| River Flood Warning | 1 |
| Flash Flood Watch | 1 |
| Flood Watch | 5 |
| Areal Flood Advisory | 9 |
| Winter | |
| Winter Storm Warning | 9 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 19 |
| Cold | |
| Freeze Warning | 5 |
| Wind Chill Warning | 1 |
| Frost Advisory | 12 |
| Wind Chill Advisory | 6 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 13 |
| Fog and smoke | |
| Dense Fog Advisory | 14 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.