Alert archive / Connecticut / Capitol Planning Region
Weather alerts in Capitol Planning Region, Connecticut, 2018
134 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 134
- Warnings
- 51
- Watches
- 30
- Advisories
- 53
- Busiest month
- January18 alerts
- Busiest day
- July 17, 20187 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 2018 had a tornado report inside them.
Capitol Planning Region, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 8 | 33% | 0 | ||
| Flash flood warnings | 4 | 2 | 50% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 16 | 4 | 75% | 12 | 42% | 11 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 91 | 44 | 52% | 233 | 59% | 24 min |
| NWS Boston/Norton, MA: flash flood warnings | 36 | 10 | 72% | 114 | 94% | 68 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 3, 3:50 AM EST | Winter Storm Warning | BOX | 39 hr |
| Jan 4, 3:46 AM EST | Wind Chill Watch | BOX | 24 hr |
| Jan 4, 7:14 PM EST | Wind Advisory | BOX | 5 hr |
| Jan 5, 4:02 AM EST | Wind Chill Advisory | BOX | 54 hr |
| Jan 5, 8:22 AM EST | Wind Advisory | BOX | 14 hr |
| Jan 10, 3:17 PM EST | Flood Watch | BOX | 70 hr |
| Jan 11, 10:40 PM EST | Dense Fog Advisory | BOX | 10 hr |
| Jan 12, 3:35 AM EST | Winter Weather Advisory | BOX | 33 hr |
| Jan 12, 1:36 PM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 12, 5:33 PM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 12, 11:19 PM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 13, 12:06 PM EST | River Flood Warning | BOX | 69 hr |
| Jan 14, 9:02 PM EST | River Flood Warning | BOX | 6 hr |
| Jan 15, 3:46 AM EST | Winter Storm Watch | BOX | 24 hr |
| Jan 15, 5:18 AM EST | River Flood Warning | BOX | 27 hr |
| Jan 16, 3:56 AM EST | Winter Storm Warning | BOX | 35 hr |
| Jan 16, 3:56 AM EST | Winter Weather Advisory | BOX | 35 hr |
| Jan 22, 1:11 PM EST | Dense Fog Advisory | BOX | 22 hr |
| Feb 5, 3:46 PM EST | Winter Storm Watch | BOX | 25 hr |
| Feb 6, 4:17 PM EST | Winter Weather Advisory | BOX | 30 hr |
| Feb 10, 8:19 PM EST | Dense Fog Advisory | BOX | 13 hr |
| Feb 14, 5:46 AM EST | Winter Weather Advisory | BOX | 3 hr |
| Feb 16, 3:30 AM EST | Winter Storm Watch | BOX | 34 hr |
| Feb 17, 3:30 AM EST | Winter Storm Warning | BOX | 27 hr |
| Feb 20, 2:15 AM EST | Dense Fog Advisory | BOX | 7 hr |
| Feb 24, 3:59 AM EST | Winter Weather Advisory | BOX | 36 hr |
| Feb 28, 3:27 PM EST | Flood Watch | BOX | 57 hr |
| Mar 1, 3:38 PM EST | Wind Advisory | BOX | 60 hr |
| Mar 2, 11:14 AM EST | Areal Flood Advisory | BOX | 4 hr |
| Mar 5, 3:39 AM EST | Winter Storm Watch | BOX | 35 hr |
| Mar 6, 3:48 AM EST | Winter Storm Warning | BOX | 57 hr |
| Mar 11, 3:51 AM EDT | Winter Storm Watch | BOX | 24 hr |
| Mar 12, 3:46 AM EDT | Winter Storm Warning | BOX | 46 hr |
| Mar 19, 3:27 PM EDT | Winter Storm Watch | BOX | 36 hr |
| Mar 20, 4:02 AM EDT | Winter Storm Warning | BOX | 42 hr |
| Mar 20, 2:48 PM EDT | Winter Weather Advisory | BOX | 38 hr |
| Mar 30, 2:07 AM EDT | Dense Fog Advisory | BOX | 8 hr |
| Apr 1, 3:59 PM EDT | Winter Weather Advisory | BOX | 20 hr |
| Apr 3, 3:00 PM EDT | Wind Advisory | BOX | 37 hr |
| Apr 4, 4:52 AM EDT | High Wind Warning | BOX | 20 hr |
| Apr 13, 3:02 PM EDT | Winter Weather Advisory | BOX | 67 hr |
| Apr 15, 9:52 AM EDT | Winter Weather Advisory | BOX | 16 hr |
| Apr 16, 11:15 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Apr 16, 1:26 PM EDT | Areal Flood Warning | BOX | 6 hr |
| Apr 16, 7:42 PM EDT | Areal Flood Warning | BOX | 2 hr |
| May 4, 6:20 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 15, 2:23 PM EDT | Tornado Watch | SPC | 4 hr |
| May 15, 3:06 PM EDT | Severe Thunderstorm Warning | BOX | 54 min |
| May 15, 3:36 PM EDT | Tornado Warning | BOX | 24 min |
| May 15, 3:46 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| May 15, 4:02 PM EDT | Tornado Warning | BOX | 28 min |
| May 15, 4:42 PM EDT | Severe Thunderstorm Warning | BOX | 63 min |
| Jun 17, 4:51 PM EDT | Heat Advisory | BOX | 25 hr |
| Jun 18, 7:59 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jun 29, 3:22 PM EDT | Excessive Heat Watch | BOX | 48 hr |
| Jun 30, 4:16 PM EDT | Excessive Heat Warning | BOX | 28 hr |
| Jul 1, 3:30 PM EDT | Heat Advisory | BOX | 4 days |
| Jul 3, 5:23 PM EDT | Flash Flood Warning | BOX | 74 min |
| Jul 17, 3:58 AM EDT | Heat Advisory | BOX | 12 hr |
| Jul 17, 4:15 AM EDT | Flash Flood Watch | BOX | 15 hr |
| Jul 17, 11:17 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 17, 2:02 PM EDT | Severe Thunderstorm Warning | BOX | 35 min |
| Jul 17, 2:22 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Jul 17, 2:41 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Jul 17, 3:10 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Jul 25, 9:39 AM EDT | Flash Flood Watch | BOX | 18 hr |
| Jul 25, 10:13 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Jul 27, 1:17 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 28, 4:47 PM EDT | Severe Thunderstorm Warning | BOX | 29 min |
| Aug 2, 4:47 PM EDT | Severe Thunderstorm Warning | BOX | 43 min |
| Aug 3, 2:41 PM EDT | Flash Flood Watch | BOX | 25 hr |
| Aug 4, 7:02 AM EDT | Areal Flood Advisory | BOX | 58 min |
| Aug 4, 7:53 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 4, 8:48 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 5, 2:58 PM EDT | Heat Advisory | BOX | 53 hr |
| Aug 7, 8:50 PM EDT | Areal Flood Advisory | BOX | 55 min |
| Aug 7, 9:35 PM EDT | Flash Flood Warning | BOX | 94 min |
| Aug 8, 3:29 AM EDT | Heat Advisory | BOX | 15 hr |
| Aug 10, 3:20 PM EDT | Flash Flood Watch | BOX | 48 hr |
| Aug 12, 2:42 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 14, 11:10 AM EDT | Areal Flood Advisory | BOX | 88 min |
| Aug 17, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 17, 10:44 PM EDT | Severe Thunderstorm Warning | BOX | 49 min |
| Aug 17, 10:59 PM EDT | Areal Flood Advisory | BOX | 101 min |
| Aug 27, 2:51 AM EDT | Excessive Heat Watch | BOX | 24 hr |
| Aug 27, 3:20 PM EDT | Excessive Heat Warning | BOX | 54 hr |
| Aug 30, 3:39 AM EDT | Heat Advisory | BOX | 14 hr |
| Sep 2, 2:54 PM EDT | Heat Advisory | BOX | 48 hr |
| Sep 5, 2:55 PM EDT | Heat Advisory | BOX | 27 hr |
| Sep 6, 2:59 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Sep 12, 11:59 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Sep 12, 3:10 PM EDT | Flash Flood Watch | BOX | 16 hr |
| Sep 13, 1:27 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Sep 16, 4:04 AM EDT | Dense Fog Advisory | BOX | 4 hr |
| Sep 17, 3:36 AM EDT | Flash Flood Watch | BOX | 39 hr |
| Sep 25, 4:12 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Sep 25, 6:44 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Sep 25, 7:45 PM EDT | Areal Flood Warning | BOX | 4 hr |
| Sep 27, 3:30 PM EDT | Flash Flood Watch | BOX | 21 hr |
| Oct 2, 5:26 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Oct 2, 5:35 PM EDT | Severe Thunderstorm Warning | BOX | 25 min |
| Oct 2, 5:55 PM EDT | Severe Thunderstorm Warning | BOX | 35 min |
| Oct 2, 6:10 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Oct 2, 8:30 PM EDT | Areal Flood Advisory | BOX | 60 min |
| Oct 2, 10:25 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Oct 10, 2:42 PM EDT | Flash Flood Watch | BOX | 47 hr |
| Oct 13, 4:13 AM EDT | Frost Advisory | BOX | 29 hr |
| Oct 17, 2:51 AM EDT | Freeze Watch | BOX | 12 hr |
| Oct 17, 3:18 PM EDT | Freeze Warning | BOX | 12 hr |
| Oct 18, 3:42 AM EDT | Freeze Warning | BOX | 29 hr |
| Nov 2, 4:35 AM EDT | High Wind Watch | BOX | 10 hr |
| Nov 2, 2:40 PM EDT | Wind Advisory | BOX | 28 hr |
| Nov 3, 2:46 AM EDT | Flash Flood Watch | BOX | 7 hr |
| Nov 3, 3:35 AM EDT | Areal Flood Warning | BOX | 3 hr |
| Nov 3, 7:45 AM EDT | Areal Flood Warning | BOX | 7 hr |
| Nov 3, 12:23 PM EDT | River Flood Warning | BOX | 3 days |
| Nov 3, 3:56 PM EDT | River Flood Warning | BOX | 22 hr |
| Nov 3, 3:56 PM EDT | River Flood Warning | BOX | 29 hr |
| Nov 8, 3:20 PM EST | Flood Watch | BOX | 36 hr |
| Nov 14, 3:31 PM EST | Winter Storm Watch | BOX | 13 hr |
| Nov 14, 3:31 PM EST | Winter Weather Advisory | BOX | 34 hr |
| Nov 15, 11:20 AM EST | Winter Storm Warning | BOX | 17 hr |
| Dec 2, 3:37 PM EST | Dense Fog Advisory | BOX | 17 hr |
| Dec 15, 3:51 PM EST | Winter Weather Advisory | BOX | 37 hr |
| Dec 19, 3:18 PM EST | Flood Watch | BOX | 58 hr |
| Dec 20, 3:16 PM EST | Wind Advisory | BOX | 31 hr |
| Dec 21, 9:36 AM EST | Areal Flood Advisory | BOX | 3 hr |
| Dec 21, 11:45 AM EST | Areal Flood Warning | BOX | 3 hr |
| Dec 21, 12:17 PM EST | River Flood Warning | BOX | 72 hr |
| Dec 21, 3:22 PM EST | Areal Flood Warning | BOX | 7 hr |
| Dec 21, 6:29 PM EST | River Flood Warning | BOX | 4 days |
| Dec 21, 6:29 PM EST | River Flood Warning | BOX | 18 hr |
| Dec 21, 10:16 PM EST | Areal Flood Warning | BOX | 55 min |
| Dec 26, 2:53 PM EST | Winter Weather Advisory | BOX | 44 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 archive20172019
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.