Alert archive / Maine / Knox County
Weather alerts in Knox County, Maine, 2013
98 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 98
- Warnings
- 20
- Watches
- 24
- Advisories
- 35
- Busiest month
- February17 alerts
- Busiest day
- September 12, 20138 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, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 7 | 13% | 5 | 80% | 32 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Gray, ME: tornado warnings | 2 | 1 | 50% | 1 | 100% | 23 min |
| NWS Gray, ME: severe thunderstorm warnings | 144 | 115 | 20% | 271 | 89% | 21 min |
| NWS Gray, ME: flash flood warnings | 35 | 23 | 34% | 38 | 89% | 69 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 10, 10:12 AM EST | Wind Advisory | GYX | 7 hr |
| Jan 12, 4:57 PM EST | Dense Fog Advisory | GYX | 39 hr |
| Jan 15, 3:18 PM EST | Winter Weather Advisory | GYX | 29 hr |
| Jan 20, 4:02 AM EST | Wind Advisory | GYX | 15 hr |
| Jan 22, 3:40 AM EST | Wind Chill Advisory | GYX | 3 days |
| Jan 29, 3:44 AM EST | Winter Weather Advisory | GYX | 30 hr |
| Jan 29, 8:11 PM EST | High Wind Watch | GYX | 19 hr |
| Jan 30, 11:38 AM EST | Dense Fog Advisory | GYX | 15 hr |
| Jan 30, 3:09 PM EST | High Wind Warning | GYX | 24 hr |
| Jan 31, 3:06 PM EST | Wind Advisory | GYX | 6 hr |
| Feb 6, 3:40 AM EST | Winter Storm Watch | GYX | 35 hr |
| Feb 7, 4:19 AM EST | Coastal Flood Watch | GYX | 11 hr |
| Feb 7, 2:56 PM EST | Blizzard Warning | GYX | 48 hr |
| Feb 7, 3:07 PM EST | Coastal Flood Warning | GYX | 46 hr |
| Feb 8, 8:37 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 8, 9:32 PM EST | Coastal Flood Advisory | GYX | 88 min |
| Feb 9, 4:07 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 9, 8:54 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 11, 5:36 PM EST | Dense Fog Advisory | GYX | 9 hr |
| Feb 15, 3:22 PM EST | Winter Storm Watch | GYX | 24 hr |
| Feb 16, 3:31 PM EST | Winter Weather Advisory | GYX | 31 hr |
| Feb 16, 3:36 PM EST | Wind Advisory | GYX | 31 hr |
| Feb 18, 3:43 AM EST | Wind Advisory | GYX | 13 hr |
| Feb 22, 3:32 AM EST | Winter Storm Watch | GYX | 24 hr |
| Feb 23, 3:34 AM EST | Winter Weather Advisory | GYX | 44 hr |
| Feb 25, 3:36 PM EST | Winter Storm Watch | GYX | 24 hr |
| Feb 26, 3:33 PM EST | Winter Weather Advisory | GYX | 36 hr |
| Mar 7, 10:10 AM EST | Coastal Flood Advisory | GYX | 24 hr |
| Mar 9, 3:14 AM EST | Coastal Flood Advisory | GYX | 8 hr |
| Mar 10, 4:03 AM EDT | Coastal Flood Statement | GYX | 8 hr |
| Mar 17, 3:22 PM EDT | Winter Storm Watch | GYX | 12 hr |
| Mar 18, 3:41 AM EDT | Winter Storm Warning | GYX | 49 hr |
| Mar 19, 6:44 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| May 13, 2:33 PM EDT | Frost Advisory | GYX | 12 hr |
| May 24, 2:57 PM EDT | Coastal Flood Advisory | GYX | 9 hr |
| May 25, 3:45 PM EDT | Coastal Flood Advisory | GYX | 7 hr |
| May 25, 10:20 PM EDT | Coastal Flood Warning | GYX | 4 hr |
| May 26, 3:32 PM EDT | Coastal Flood Advisory | GYX | 11 hr |
| Jun 6, 2:43 PM EDT | Flood Watch | GYX | 43 hr |
| Jun 10, 3:46 AM EDT | Flood Watch | GYX | 35 hr |
| Jun 17, 3:26 PM EDT | Special Weather Statement | GYX | 49 min |
| Jun 25, 3:11 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 4:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 25, 7:29 PM EDT | Special Weather Statement | GYX | 31 min |
| Jun 27, 3:22 AM EDT | Flood Watch | GYX | 36 hr |
| Jul 1, 3:50 AM EDT | Flash Flood Watch | GYX | 24 hr |
| Jul 10, 7:23 PM EDT | Dense Fog Advisory | GYX | 15 hr |
| Jul 17, 10:36 PM EDT | Special Weather Statement | GYX | 24 min |
| Jul 19, 4:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 19, 9:26 PM EDT | Severe Thunderstorm Warning | GYX | 49 min |
| Jul 20, 1:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 20, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 20, 4:36 PM EDT | Severe Thunderstorm Warning | GYX | 54 min |
| Jul 20, 5:21 PM EDT | Severe Thunderstorm Warning | GYX | 24 min |
| Jul 20, 6:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 23, 3:15 AM EDT | Flash Flood Watch | GYX | 12 hr |
| Jul 24, 2:21 PM EDT | Severe Thunderstorm Warning | GYX | 39 min |
| Aug 14, 12:29 PM EDT | Special Weather Statement | GYX | 31 min |
| Aug 28, 6:35 PM EDT | Severe Thunderstorm Warning | GYX | 55 min |
| Aug 28, 6:46 PM EDT | Flash Flood Warning | GYX | 3 hr |
| Sep 1, 3:11 PM EDT | Flash Flood Watch | GYX | 35 hr |
| Sep 2, 5:16 AM EDT | Areal Flood Advisory | GYX | 4 hr |
| Sep 2, 7:07 AM EDT | Areal Flood Warning | GYX | 6 hr |
| Sep 11, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 11, 8:36 PM EDT | Severe Thunderstorm Warning | GYX | 54 min |
| Sep 12, 12:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 12, 12:51 PM EDT | Severe Thunderstorm Warning | GYX | 54 min |
| Sep 12, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Sep 12, 1:26 PM EDT | Special Weather Statement | GYX | 64 min |
| Sep 12, 1:35 PM EDT | Severe Thunderstorm Warning | GYX | 55 min |
| Sep 12, 3:07 PM EDT | Flash Flood Watch | GYX | 12 hr |
| Sep 12, 3:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Sep 21, 12:41 AM EDT | Dense Fog Advisory | GYX | 7 hr |
| Sep 29, 5:17 AM EDT | Dense Fog Advisory | GYX | 5 hr |
| Oct 7, 7:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 23, 2:59 PM EDT | Frost Advisory | GYX | 10 hr |
| Oct 25, 2:21 PM EDT | Freeze Warning | GYX | 18 hr |
| Oct 31, 3:15 PM EDT | Wind Advisory | GYX | 28 hr |
| Nov 18, 5:11 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Nov 23, 3:38 PM EST | Wind Advisory | GYX | 28 hr |
| Nov 26, 2:37 PM EST | Flood Watch | GYX | 26 hr |
| Nov 26, 2:46 PM EST | Wind Advisory | GYX | 24 hr |
| Nov 26, 5:14 PM EST | Coastal Flood Statement | GYX | 15 hr |
| Nov 27, 8:00 AM EST | Coastal Flood Statement | GYX | 11 hr |
| Nov 27, 2:14 PM EST | Areal Flood Advisory | GYX | 4 hr |
| Dec 5, 9:01 PM EST | Dense Fog Advisory | GYX | 10 hr |
| Dec 8, 3:17 PM EST | Winter Weather Advisory | GYX | 33 hr |
| Dec 13, 3:07 AM EST | Winter Storm Watch | GYX | 25 hr |
| Dec 13, 3:28 PM EST | Winter Storm Warning | GYX | 46 hr |
| Dec 16, 3:04 PM EST | Winter Storm Watch | GYX | 12 hr |
| Dec 17, 3:31 AM EST | Winter Storm Warning | GYX | 24 hr |
| Dec 20, 3:57 AM EST | Winter Storm Watch | GYX | 24 hr |
| Dec 21, 3:50 AM EST | Ice Storm Warning | GYX | 63 hr |
| Dec 21, 3:50 AM EST | Freezing Rain Advisory | GYX | 63 hr |
| Dec 25, 3:20 PM EST | Winter Weather Advisory | GYX | 31 hr |
| Dec 27, 3:06 PM EST | Winter Storm Watch | GYX | 24 hr |
| Dec 28, 3:12 PM EST | Winter Storm Warning | GYX | 36 hr |
| Dec 28, 3:12 PM EST | Winter Weather Advisory | GYX | 36 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 archive20122014
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.