Alert archive / Connecticut / Capitol Planning Region
Weather alerts in Capitol Planning Region, Connecticut, 2012
135 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Capitol Planning Region and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 135
- Warnings
- 49
- Watches
- 31
- Advisories
- 55
- Busiest month
- August24 alerts
- Busiest day
- August 5, 20128 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 Capitol Planning Region in 2012 had a tornado report inside them.
Capitol Planning Region, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 25 | 14 | 44% | 0 | ||
| Flash flood warnings | 8 | 2 | 75% | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 5 | 0 | 100% | 0 | ||
| NWS Boston/Norton, MA: severe thunderstorm warnings | 119 | 68 | 43% | 244 | 67% | 25 min |
| NWS Boston/Norton, MA: flash flood warnings | 25 | 14 | 44% | 58 | 74% | 63 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, 8:20 PM EST | Dense Fog Advisory | BOX | 7 hr |
| Jan 11, 4:48 AM EST | Winter Weather Advisory | BOX | 34 hr |
| Jan 12, 7:34 PM EST | Wind Advisory | BOX | 28 hr |
| Jan 16, 3:53 AM EST | Winter Weather Advisory | BOX | 30 hr |
| Jan 17, 3:54 PM EST | Wind Advisory | BOX | 24 hr |
| Jan 20, 1:15 PM EST | Winter Weather Advisory | BOX | 29 hr |
| Jan 22, 3:56 PM EST | Freezing Rain Advisory | BOX | 31 hr |
| Jan 23, 11:09 AM EST | Freezing Rain Advisory | BOX | 10 hr |
| Jan 26, 4:10 AM EST | Winter Weather Advisory | BOX | 32 hr |
| Feb 24, 4:50 AM EST | Wind Advisory | BOX | 47 hr |
| Feb 28, 4:22 AM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 28, 3:44 PM EST | Winter Weather Advisory | BOX | 50 hr |
| Mar 2, 3:54 PM EST | Winter Weather Advisory | BOX | 18 hr |
| Mar 7, 4:15 PM EST | Wind Advisory | BOX | 35 hr |
| Mar 20, 3:54 PM EDT | Dense Fog Advisory | BOX | 18 hr |
| Mar 26, 4:06 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Mar 27, 1:50 AM EDT | Red Flag Warning | BOX | 17 hr |
| Apr 2, 4:26 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 3, 4:16 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 3, 4:30 PM EDT | Fire Weather Watch | BOX | 10 hr |
| Apr 4, 2:56 AM EDT | Red Flag Warning | BOX | 17 hr |
| Apr 7, 3:44 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 8, 2:10 PM EDT | Fire Weather Watch | BOX | 2 hr |
| Apr 8, 4:31 PM EDT | Red Flag Warning | BOX | 27 hr |
| Apr 15, 4:02 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 16, 4:15 AM EDT | Red Flag Warning | BOX | 16 hr |
| Apr 16, 3:37 PM EDT | Fire Weather Watch | BOX | 13 hr |
| Apr 17, 4:37 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 21, 4:12 PM EDT | Flood Watch | BOX | 36 hr |
| Apr 22, 10:15 PM EDT | Areal Flood Advisory | BOX | 5 hr |
| Apr 25, 3:50 PM EDT | Frost Advisory | BOX | 16 hr |
| Apr 26, 3:38 PM EDT | Freeze Watch | BOX | 13 hr |
| Apr 27, 4:20 AM EDT | Freeze Warning | BOX | 30 hr |
| Apr 28, 3:45 AM EDT | Freeze Watch | BOX | 12 hr |
| Apr 28, 4:13 PM EDT | Freeze Warning | BOX | 16 hr |
| Apr 29, 4:21 AM EDT | Freeze Watch | BOX | 12 hr |
| Apr 29, 3:59 PM EDT | Freeze Warning | BOX | 17 hr |
| May 10, 3:13 AM EDT | Areal Flood Advisory | BOX | 107 min |
| May 16, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 29, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 2, 3:14 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Jun 19, 3:58 PM EDT | Heat Advisory | BOX | 27 hr |
| Jun 20, 4:14 PM EDT | Heat Advisory | BOX | 27 hr |
| Jun 22, 1:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 3:31 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Jun 22, 4:01 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jun 22, 4:02 PM EDT | Severe Thunderstorm Warning | BOX | 35 min |
| Jun 22, 4:36 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jun 25, 6:39 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 7:44 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jul 1, 1:35 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 1, 2:51 PM EDT | Severe Thunderstorm Warning | BOX | 38 min |
| Jul 1, 3:06 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jul 17, 3:56 AM EDT | Heat Advisory | BOX | 15 hr |
| Jul 18, 12:20 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 18, 12:41 PM EDT | Heat Advisory | BOX | 6 hr |
| Jul 18, 2:21 PM EDT | Severe Thunderstorm Warning | BOX | 54 min |
| Jul 18, 2:24 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 18, 2:29 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Jul 23, 9:31 AM EDT | Areal Flood Advisory | BOX | 89 min |
| Jul 24, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 11:26 AM EDT | Flash Flood Watch | BOX | 11 hr |
| Jul 26, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 7:06 PM EDT | Severe Thunderstorm Warning | BOX | 69 min |
| Jul 28, 3:54 AM EDT | Flash Flood Watch | BOX | 24 hr |
| Jul 28, 12:59 PM EDT | Areal Flood Advisory | BOX | 6 hr |
| Jul 28, 1:48 PM EDT | Flash Flood Warning | BOX | 117 min |
| Jul 28, 3:00 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jul 28, 3:24 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jul 28, 3:33 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 28, 3:44 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Jul 29, 4:57 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 5, 4:03 AM EDT | Flash Flood Watch | BOX | 19 hr |
| Aug 5, 4:20 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| Aug 5, 4:58 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Aug 5, 5:05 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| Aug 5, 5:13 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 5, 5:46 PM EDT | Severe Thunderstorm Warning | BOX | 29 min |
| Aug 5, 5:57 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 5, 6:30 PM EDT | Severe Thunderstorm Warning | BOX | 18 min |
| Aug 5, 8:08 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Aug 5, 8:18 PM EDT | Areal Flood Advisory | BOX | 117 min |
| Aug 10, 11:52 AM EDT | Areal Flood Advisory | BOX | 6 hr |
| Aug 10, 3:31 PM EDT | Tornado Watch | SPC | 5 hr |
| Aug 10, 4:00 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Aug 10, 4:22 PM EDT | Tornado Warning | BOX | 38 min |
| Aug 10, 4:56 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Aug 10, 4:57 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Aug 10, 5:00 PM EDT | Tornado Warning | BOX | 45 min |
| Aug 11, 1:13 PM EDT | Areal Flood Advisory | BOX | 50 min |
| Aug 12, 7:32 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 15, 3:48 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 15, 5:16 AM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Aug 15, 5:28 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 15, 5:59 PM EDT | Flash Flood Warning | BOX | 68 min |
| Aug 17, 9:06 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Sep 8, 11:18 AM EDT | Tornado Watch | SPC | 10 hr |
| Sep 8, 2:02 PM EDT | Severe Thunderstorm Warning | BOX | 43 min |
| Sep 8, 4:47 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 8, 5:56 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Sep 8, 6:31 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 8, 6:50 PM EDT | Severe Thunderstorm Warning | BOX | 25 min |
| Sep 8, 7:15 PM EDT | Severe Thunderstorm Warning | BOX | 30 min |
| Sep 8, 7:30 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Sep 17, 3:47 PM EDT | High Wind Watch | BOX | 13 hr |
| Sep 18, 4:37 AM EDT | Wind Advisory | BOX | 23 hr |
| Sep 18, 7:31 PM EDT | High Wind Warning | BOX | 10 hr |
| Sep 18, 7:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 18, 8:18 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Sep 18, 8:52 PM EDT | Areal Flood Advisory | BOX | 5 hr |
| Sep 18, 9:16 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 18, 10:16 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Oct 4, 6:01 PM EDT | Areal Flood Advisory | BOX | 119 min |
| Oct 4, 7:46 PM EDT | Areal Flood Advisory | BOX | 59 min |
| Oct 4, 11:17 PM EDT | Dense Fog Advisory | BOX | 10 hr |
| Oct 11, 4:17 AM EDT | Freeze Watch | BOX | 23 hr |
| Oct 12, 3:37 AM EDT | Freeze Warning | BOX | 30 hr |
| Oct 27, 4:50 PM EDT | High Wind Watch | BOX | 21 hr |
| Oct 27, 4:51 PM EDT | Flood Watch | BOX | 56 hr |
| Oct 28, 4:38 AM EDT | High Wind Warning | BOX | 44 hr |
| Oct 30, 12:33 AM EDT | Wind Advisory | BOX | 13 hr |
| Nov 6, 4:37 PM EST | Wind Advisory | BOX | 58 hr |
| Nov 7, 3:30 AM EST | Winter Weather Advisory | BOX | 28 hr |
| Dec 1, 4:50 AM EST | Winter Weather Advisory | BOX | 31 hr |
| Dec 2, 9:32 AM EST | Dense Fog Advisory | BOX | 4 hr |
| Dec 16, 7:16 PM EST | Freezing Rain Advisory | BOX | 14 hr |
| Dec 21, 4:30 AM EST | Wind Advisory | BOX | 11 hr |
| Dec 21, 11:49 AM EST | Areal Flood Advisory | BOX | 3 hr |
| Dec 22, 4:18 AM EST | Wind Advisory | BOX | 12 hr |
| Dec 24, 3:50 AM EST | Winter Weather Advisory | BOX | 25 hr |
| Dec 25, 5:03 AM EST | Winter Storm Watch | BOX | 24 hr |
| Dec 26, 5:13 AM EST | Winter Weather Advisory | BOX | 24 hr |
| Dec 28, 4:43 PM EST | Winter Weather Advisory | BOX | 33 hr |
| Dec 29, 4:25 AM EST | Winter Storm Warning | BOX | 21 hr |
| Dec 29, 4:32 PM EST | Wind Advisory | BOX | 34 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 | 25 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 2 |
| Flooding | |
| Flash Flood Warning | 8 |
| Flash Flood Watch | 3 |
| Flood Watch | 2 |
| Areal Flood Advisory | 22 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 3 |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 4 |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 2 |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 6 |
| 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 archive20112013
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.