Alert archive / Connecticut / Capitol Planning Region
Weather alerts in Capitol Planning Region, Connecticut, 2017
100 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 100
- Warnings
- 34
- Watches
- 19
- Advisories
- 47
- Busiest month
- October19 alerts
- Busiest day
- October 25, 20176 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, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 6 | 63% | 0 | ||
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 0 | 2 | 0% | |||
| NWS Boston/Norton, MA: severe thunderstorm warnings | 80 | 48 | 40% | 305 | 68% | 25 min |
| NWS Boston/Norton, MA: flash flood warnings | 32 | 11 | 66% | 91 | 84% | 48 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 6, 2:53 PM EST | Winter Storm Warning | BOX | 34 hr |
| Jan 6, 2:53 PM EST | Winter Weather Advisory | BOX | 31 hr |
| Jan 16, 3:49 AM EST | Winter Weather Advisory | BOX | 54 hr |
| Jan 21, 7:52 PM EST | Dense Fog Advisory | BOX | 14 hr |
| Jan 22, 3:51 AM EST | High Wind Watch | BOX | 280 days |
| Jan 22, 4:20 PM EST | Winter Weather Advisory | BOX | 47 hr |
| Jan 23, 4:11 AM EST | Wind Advisory | BOX | 31 hr |
| Jan 30, 3:41 PM EST | Winter Weather Advisory | BOX | 32 hr |
| Feb 6, 4:34 AM EST | Winter Weather Advisory | BOX | 50 hr |
| Feb 7, 2:51 PM EST | Winter Storm Watch | BOX | 14 hr |
| Feb 7, 10:14 PM EST | Winter Weather Advisory | BOX | 9 hr |
| Feb 8, 4:51 AM EST | Winter Storm Warning | BOX | 38 hr |
| Feb 10, 3:27 PM EST | Winter Storm Watch | BOX | 25 hr |
| Feb 11, 4:29 PM EST | Winter Storm Warning | BOX | 39 hr |
| Feb 11, 4:29 PM EST | Winter Weather Advisory | BOX | 35 hr |
| Feb 12, 4:34 PM EST | Wind Advisory | BOX | 26 hr |
| Feb 27, 7:20 AM EST | River Flood Warning | BOX | 33 hr |
| Mar 1, 3:13 AM EST | Wind Advisory | BOX | 11 hr |
| Mar 1, 2:03 PM EST | High Wind Warning | BOX | 28 hr |
| Mar 4, 3:48 AM EST | Wind Chill Advisory | BOX | 29 hr |
| Mar 9, 4:00 AM EST | Wind Advisory | BOX | 15 hr |
| Mar 9, 4:25 AM EST | Winter Weather Advisory | BOX | 34 hr |
| Mar 11, 10:13 AM EST | Wind Advisory | BOX | 10 hr |
| Mar 11, 5:14 PM EST | Winter Storm Watch | BOX | 46 hr |
| Mar 12, 3:36 PM EDT | Winter Storm Warning | BOX | 49 hr |
| Mar 13, 4:11 PM EDT | Blizzard Warning | BOX | 26 hr |
| Mar 21, 3:23 PM EDT | Wind Advisory | BOX | 28 hr |
| Mar 30, 3:59 PM EDT | Winter Weather Advisory | BOX | 47 hr |
| Mar 31, 3:48 AM EDT | Winter Weather Advisory | BOX | 31 hr |
| Apr 4, 3:38 PM EDT | Flood Watch | BOX | 59 hr |
| Apr 6, 12:34 PM EDT | River Flood Warning | BOX | 4 days |
| Apr 6, 6:05 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Apr 11, 1:17 PM EDT | River Flood Watch | BOX | 24 hr |
| Apr 11, 1:17 PM EDT | River Flood Watch | BOX | 24 hr |
| May 3, 4:21 AM EDT | Frost Advisory | BOX | 27 hr |
| May 15, 2:22 PM EDT | Wind Advisory | BOX | 5 hr |
| May 19, 12:17 AM EDT | Severe Thunderstorm Warning | BOX | 28 min |
| May 31, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 31, 6:59 PM EDT | Severe Thunderstorm Warning | BOX | 31 min |
| May 31, 7:28 PM EDT | Severe Thunderstorm Warning | BOX | 43 min |
| Jun 13, 7:56 AM EDT | Heat Advisory | BOX | 10 hr |
| Jun 16, 9:09 PM EDT | Areal Flood Advisory | BOX | 111 min |
| Jun 18, 2:58 AM EDT | Flash Flood Watch | BOX | 42 hr |
| Jun 19, 11:13 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 19, 2:01 PM EDT | Areal Flood Advisory | BOX | 119 min |
| Jun 19, 4:29 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Jun 19, 4:31 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jun 19, 5:36 PM EDT | Severe Thunderstorm Warning | BOX | 37 min |
| Jun 21, 3:58 PM EDT | Severe Thunderstorm Warning | BOX | 48 min |
| Jun 30, 1:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 5:31 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Jun 30, 6:06 PM EDT | Severe Thunderstorm Warning | BOX | 24 min |
| Jun 30, 6:17 PM EDT | Areal Flood Advisory | BOX | 118 min |
| Jul 1, 1:19 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 12, 10:15 AM EDT | Flash Flood Watch | BOX | 11 hr |
| Jul 12, 12:53 PM EDT | Severe Thunderstorm Warning | BOX | 67 min |
| Jul 12, 1:07 PM EDT | Areal Flood Advisory | BOX | 53 min |
| Jul 12, 1:57 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Jul 13, 11:06 AM EDT | Flash Flood Watch | BOX | 8 hr |
| Jul 13, 1:57 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 20, 4:17 AM EDT | Heat Advisory | BOX | 14 hr |
| Aug 2, 11:55 AM EDT | Flash Flood Watch | BOX | 8 hr |
| Aug 2, 2:45 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Aug 2, 2:54 PM EDT | Severe Thunderstorm Warning | BOX | 51 min |
| Aug 2, 3:10 PM EDT | Severe Thunderstorm Warning | BOX | 50 min |
| Aug 2, 4:44 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 5, 7:42 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 22, 3:55 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 23, 12:13 AM EDT | Severe Thunderstorm Warning | BOX | 19 min |
| Sep 5, 6:31 PM EDT | Severe Thunderstorm Warning | BOX | 25 min |
| Sep 5, 8:31 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Sep 26, 9:17 PM EDT | Dense Fog Advisory | BOX | 14 hr |
| Oct 12, 4:26 AM EDT | Frost Advisory | BOX | 27 hr |
| Oct 14, 6:17 PM EDT | Dense Fog Advisory | BOX | 15 hr |
| Oct 16, 4:16 AM EDT | Frost Advisory | BOX | 28 hr |
| Oct 23, 3:23 AM EDT | Dense Fog Advisory | BOX | 7 hr |
| Oct 23, 4:01 PM EDT | Flash Flood Watch | BOX | 52 hr |
| Oct 23, 4:04 PM EDT | Wind Advisory | BOX | 40 hr |
| Oct 24, 8:47 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Oct 24, 9:31 PM EDT | Flash Flood Warning | BOX | 4 hr |
| Oct 24, 10:52 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Oct 25, 1:23 AM EDT | Flash Flood Warning | BOX | 3 hr |
| Oct 25, 1:44 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Oct 25, 4:11 AM EDT | Areal Flood Warning | BOX | 2 hr |
| Oct 26, 8:34 AM EDT | Areal Flood Warning | BOX | 6 hr |
| Oct 28, 3:27 AM EDT | Flash Flood Watch | BOX | 50 hr |
| Oct 28, 4:31 PM EDT | High Wind Warning | BOX | 45 hr |
| Oct 29, 8:30 PM EDT | Areal Flood Warning | BOX | 10 hr |
| Oct 30, 4:15 AM EDT | Wind Advisory | BOX | 13 hr |
| Oct 31, 3:24 AM EDT | Frost Advisory | BOX | 30 hr |
| Oct 31, 11:26 AM EDT | River Flood Warning | BOX | 33 hr |
| Nov 9, 3:35 AM EST | Wind Advisory | BOX | 36 hr |
| Nov 18, 3:57 AM EST | Wind Advisory | BOX | 39 hr |
| Dec 8, 3:41 AM EST | Winter Weather Advisory | BOX | 48 hr |
| Dec 11, 3:48 AM EST | Winter Weather Advisory | BOX | 36 hr |
| Dec 21, 4:01 AM EST | Winter Weather Advisory | BOX | 62 hr |
| Dec 24, 2:58 AM EST | Wind Advisory | BOX | 38 hr |
| Dec 24, 3:03 AM EST | Winter Storm Warning | BOX | 33 hr |
| Dec 24, 3:03 AM EST | Winter Weather Advisory | BOX | 33 hr |
| Dec 27, 4:06 AM EST | Wind Chill Advisory | BOX | 48 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 |
| Severe Thunderstorm Watch | 6 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 3 |
| River Flood Warning | 3 |
| Flash Flood Watch | 6 |
| Flood Watch | 1 |
| River Flood Watch | 2 |
| Areal Flood Advisory | 9 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 14 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Frost Advisory | 4 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 12 |
| 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 archive20162018
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.