Alert archive / Connecticut / Capitol Planning Region
Weather alerts in Capitol Planning Region, Connecticut, 2015
89 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 89
- Warnings
- 27
- Watches
- 22
- Advisories
- 40
- Busiest month
- January16 alerts
- Busiest day
- May 31, 20155 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Capitol Planning Region, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 3 | 63% | 0 | ||
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 10 | 1 | 90% | 2 | 50% | 23 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 91 | 52 | 43% | 309 | 75% | 23 min |
| NWS Boston/Norton, MA: flash flood warnings | 12 | 1 | 92% | 5 | 100% | 39 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, 4:09 PM EST | Winter Weather Advisory | BOX | 44 hr |
| Jan 4, 1:11 PM EST | Dense Fog Advisory | BOX | 9 hr |
| Jan 5, 4:24 AM EST | Wind Advisory | BOX | 14 hr |
| Jan 6, 4:35 AM EST | Wind Chill Watch | BOX | 12 hr |
| Jan 6, 4:31 PM EST | Wind Chill Advisory | BOX | 42 hr |
| Jan 11, 4:13 AM EST | Winter Weather Advisory | BOX | 36 hr |
| Jan 18, 7:41 AM EST | Freezing Rain Advisory | BOX | 7 hr |
| Jan 22, 2:33 PM EST | Winter Storm Watch | BOX | 25 hr |
| Jan 23, 3:55 PM EST | Winter Storm Warning | BOX | 27 hr |
| Jan 25, 3:52 AM EST | Winter Storm Watch | BOX | 24 hr |
| Jan 25, 3:58 PM EST | Blizzard Warning | BOX | 54 hr |
| Jan 25, 3:58 PM EST | Winter Storm Warning | BOX | 54 hr |
| Jan 27, 6:37 PM EST | Winter Weather Advisory | BOX | 3 hr |
| Jan 30, 3:51 AM EST | Wind Chill Advisory | BOX | 31 hr |
| Jan 30, 4:25 PM EST | Winter Storm Watch | BOX | 37 hr |
| Jan 31, 3:23 PM EST | Winter Storm Warning | BOX | 56 hr |
| Feb 5, 3:49 AM EST | Wind Chill Advisory | BOX | 29 hr |
| Feb 6, 3:22 PM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 7, 2:55 PM EST | Winter Storm Warning | BOX | 61 hr |
| Feb 12, 3:38 AM EST | Wind Chill Advisory | BOX | 34 hr |
| Feb 12, 4:14 PM EST | Winter Storm Watch | BOX | 36 hr |
| Feb 13, 3:18 PM EST | Winter Storm Warning | BOX | 47 hr |
| Feb 14, 4:40 AM EST | Wind Chill Warning | BOX | 53 hr |
| Feb 15, 2:42 PM EST | Winter Weather Advisory | BOX | 9 hr |
| Feb 19, 4:51 AM EST | Wind Chill Advisory | BOX | 29 hr |
| Feb 20, 4:27 PM EST | Winter Weather Advisory | BOX | 43 hr |
| Feb 22, 4:25 PM EST | Wind Chill Advisory | BOX | 38 hr |
| Feb 28, 4:06 AM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 28, 3:08 PM EST | Winter Weather Advisory | BOX | 35 hr |
| Mar 2, 3:38 PM EST | Winter Weather Advisory | BOX | 36 hr |
| Mar 11, 1:51 AM EDT | Dense Fog Advisory | BOX | 6 hr |
| Mar 13, 4:12 PM EDT | Freezing Rain Advisory | BOX | 12 hr |
| Mar 14, 4:02 AM EDT | Freezing Rain Advisory | BOX | 6 hr |
| Mar 16, 3:28 PM EDT | Wind Advisory | BOX | 52 hr |
| Mar 26, 6:11 AM EDT | Dense Fog Advisory | BOX | 18 hr |
| Apr 3, 3:55 AM EDT | Wind Advisory | BOX | 38 hr |
| Apr 3, 10:25 PM EDT | Dense Fog Advisory | BOX | 8 hr |
| Apr 15, 12:29 PM EDT | River Flood Warning | BOX | 7 days |
| Apr 17, 3:47 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 18, 4:16 AM EDT | Red Flag Warning | BOX | 16 hr |
| Apr 21, 1:46 PM EDT | River Flood Warning | BOX | 61 hr |
| Apr 23, 4:00 PM EDT | Freeze Warning | BOX | 15 hr |
| Apr 24, 4:29 AM EDT | Freeze Watch | BOX | 12 hr |
| Apr 24, 4:05 PM EDT | Freeze Warning | BOX | 16 hr |
| Apr 25, 3:47 PM EDT | Frost Advisory | BOX | 16 hr |
| May 3, 4:09 PM EDT | Fire Weather Watch | BOX | 12 hr |
| May 12, 4:03 PM EDT | Fire Weather Watch | BOX | 11 hr |
| May 13, 3:20 AM EDT | Red Flag Warning | BOX | 15 hr |
| May 27, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 27, 6:42 PM EDT | Severe Thunderstorm Warning | BOX | 37 min |
| May 28, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 31, 2:20 PM EDT | Areal Flood Advisory | BOX | 55 min |
| May 31, 3:29 PM EDT | Flash Flood Watch | BOX | 41 hr |
| May 31, 3:31 PM EDT | Areal Flood Advisory | BOX | 59 min |
| May 31, 4:35 PM EDT | Areal Flood Advisory | BOX | 115 min |
| May 31, 5:03 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jun 9, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 9, 3:51 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jun 23, 10:12 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 3:47 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 23, 4:21 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jun 23, 4:57 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| Jun 23, 7:19 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Jun 23, 8:13 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Jul 1, 6:26 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Jul 7, 1:35 PM EDT | Areal Flood Advisory | BOX | 55 min |
| Jul 9, 4:01 AM EDT | Flash Flood Watch | BOX | 11 hr |
| Jul 19, 4:00 AM EDT | Heat Advisory | BOX | 14 hr |
| Jul 19, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 29, 3:26 AM EDT | Heat Advisory | BOX | 6 hr |
| Jul 30, 4:28 PM EDT | Areal Flood Warning | BOX | 2 hr |
| Jul 30, 4:53 PM EDT | Areal Flood Warning | BOX | 112 min |
| Aug 25, 4:15 PM EDT | Severe Thunderstorm Warning | BOX | 22 min |
| Aug 25, 4:50 PM EDT | Areal Flood Warning | BOX | 115 min |
| Aug 25, 7:25 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Sep 10, 11:35 AM EDT | Flash Flood Watch | BOX | 17 hr |
| Sep 13, 4:16 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Sep 29, 4:19 AM EDT | Flood Watch | BOX | 32 hr |
| Oct 16, 3:13 PM EDT | Freeze Watch | BOX | 12 hr |
| Oct 17, 3:10 AM EDT | Freeze Warning | BOX | 30 hr |
| Nov 30, 10:34 PM EST | Freezing Rain Advisory | BOX | 13 hr |
| Dec 10, 10:19 PM EST | Dense Fog Advisory | BOX | 11 hr |
| Dec 11, 9:01 AM EST | Dense Fog Advisory | BOX | 2 hr |
| Dec 14, 11:21 AM EST | Dense Fog Advisory | BOX | 13 hr |
| Dec 14, 3:03 PM EST | Wind Advisory | BOX | 26 hr |
| Dec 23, 2:44 AM EST | Dense Fog Advisory | BOX | 7 hr |
| Dec 24, 5:39 PM EST | Dense Fog Advisory | BOX | 15 hr |
| Dec 27, 3:10 PM EST | Winter Weather Advisory | BOX | 46 hr |
| Dec 29, 1:06 PM EST | Freezing Rain Advisory | BOX | 9 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 archive20142016
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.