Alert archive / Connecticut / Capitol Planning Region

Weather alerts in Capitol Planning Region, Connecticut, 2011

149 weather alerts in 2011, 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 2011. Tap one for its archive.

Alerts
149
Warnings
68
Watches
33
Advisories
48
Busiest month
August24 alerts
Busiest day
June 9, 20118 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

1 of 1 tornado warnings covering Capitol Planning Region in 2011 had a tornado report inside them.

Capitol Planning Region, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%0
Severe thunderstorm warnings191332%0
Flash flood warnings10100%0

Each office's whole area, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Boston/Norton, MA: tornado warnings13469%1080%16 min
NWS Boston/Norton, MA: severe thunderstorm warnings1227241%24077%26 min
NWS Boston/Norton, MA: flash flood warnings13377%1958%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.

IssuedProductOfficeLasted
Jan 6, 11:53 AM ESTWinter Storm WatchBOX16 hr
Jan 7, 3:47 AM ESTWinter Weather AdvisoryBOX24 hr
Jan 7, 9:07 PM ESTWinter Storm WarningBOX6 hr
Jan 10, 4:38 AM ESTWinter Storm WatchBOX36 hr
Jan 11, 3:57 AM ESTWinter Storm WarningBOX40 hr
Jan 17, 3:57 AM ESTWinter Storm WatchBOX12 hr
Jan 17, 3:57 PM ESTWinter Storm WarningBOX31 hr
Jan 20, 3:37 AM ESTWinter Weather AdvisoryBOX32 hr
Jan 20, 3:50 PM ESTWinter Storm WarningBOX21 hr
Jan 22, 4:08 PM ESTWind Chill WatchBOX23 hr
Jan 23, 3:18 PM ESTWind Chill WarningBOX20 hr
Jan 25, 4:13 AM ESTWinter Storm WatchBOX31 hr
Jan 25, 3:48 PM ESTWinter Storm WarningBOX41 hr
Jan 31, 4:43 AM ESTWinter Storm WatchBOX12 hr
Jan 31, 4:52 PM ESTWinter Storm WarningBOX45 hr
Feb 2, 6:16 PM ESTWinter Weather AdvisoryBOX6 hr
Feb 5, 3:56 AM ESTWinter Weather AdvisoryBOX20 hr
Feb 14, 4:29 AM ESTWind AdvisoryBOX29 hr
Feb 18, 4:06 AM ESTWind AdvisoryBOX48 hr
Feb 20, 4:11 PM ESTWinter Weather AdvisoryBOX18 hr
Feb 24, 1:49 PM ESTFlood WatchBOX26 hr
Feb 25, 10:05 AM ESTAreal Flood AdvisoryBOX4 hr
Feb 25, 2:02 PM ESTAreal Flood AdvisoryBOX3 hr
Feb 27, 2:27 PM ESTWinter Weather AdvisoryBOX22 hr
Feb 27, 4:09 PM ESTFlood WatchBOX24 hr
Mar 6, 5:35 AM ESTFlood WatchBOX25 hr
Mar 6, 1:27 PM ESTRiver Flood WarningBOX30 hr
Mar 6, 5:14 PM ESTRiver Flood WarningBOX8 days
Mar 7, 1:26 AM ESTAreal Flood AdvisoryBOX6 hr
Mar 7, 7:05 AM ESTAreal Flood AdvisoryBOX3 hr
Mar 7, 8:50 AM ESTRiver Flood WarningBOX37 hr
Mar 7, 9:41 AM ESTAreal Flood WarningBOX24 hr
Mar 7, 12:10 PM ESTRiver Flood WarningBOX21 hr
Mar 7, 12:10 PM ESTRiver Flood WarningBOX8 days
Mar 7, 12:10 PM ESTRiver Flood WarningBOX9 days
Mar 10, 3:53 AM ESTFlood WatchBOX34 hr
Mar 11, 5:59 AM ESTRiver Flood WarningBOX12 hr
Mar 11, 7:46 AM ESTAreal Flood WarningBOX6 hr
Mar 17, 3:48 PM EDTWind AdvisoryBOX26 hr
Mar 19, 6:44 PM EDTRiver Flood WarningBOX3 days
Mar 19, 8:35 PM EDTRiver Flood WarningBOX61 hr
Mar 23, 4:19 AM EDTWinter Weather AdvisoryBOX21 hr
Mar 28, 4:04 AM EDTRed Flag WarningBOX14 hr
Mar 30, 4:22 AM EDTWinter Storm WatchBOX24 hr
Mar 31, 4:13 AM EDTWinter Weather AdvisoryBOX32 hr
Apr 12, 1:37 PM EDTRiver Flood WatchBOX8 hr
Apr 12, 1:37 PM EDTRiver Flood WatchBOX8 hr
Apr 12, 1:37 PM EDTRiver Flood WatchBOX8 hr
Apr 12, 9:58 PM EDTRiver Flood WarningBOX48 hr
Apr 12, 9:58 PM EDTRiver Flood WarningBOX9 days
Apr 12, 9:58 PM EDTRiver Flood WarningBOX11 days
Apr 16, 3:40 AM EDTWind AdvisoryBOX27 hr
Apr 17, 12:15 AM EDTAreal Flood AdvisoryBOX7 hr
Apr 17, 2:05 AM EDTRiver Flood WarningBOX50 hr
Apr 28, 12:34 PM EDTRiver Flood WarningBOX5 days
Apr 28, 12:34 PM EDTRiver Flood WarningBOX6 days
May 5, 3:49 PM EDTFrost AdvisoryBOX15 hr
May 17, 4:12 PM EDTFlood WatchBOX36 hr
May 17, 9:33 PM EDTAreal Flood AdvisoryBOX3 hr
May 17, 11:11 PM EDTAreal Flood AdvisoryBOX3 hr
May 19, 1:17 AM EDTAreal Flood AdvisoryBOX106 min
May 19, 1:16 PM EDTRiver Flood WarningBOX51 hr
May 20, 4:37 PM EDTAreal Flood AdvisoryBOX66 min
May 21, 12:03 AM EDTDense Fog AdvisoryBOX9 hr
May 30, 7:31 AM EDTSevere Thunderstorm WarningBOX44 min
May 30, 8:02 AM EDTAreal Flood AdvisoryBOX2 hr
Jun 1, 12:58 PM EDTTornado WatchSPC7 hr
Jun 1, 4:18 PM EDTSevere Thunderstorm WarningBOX42 min
Jun 1, 4:30 PM EDTTornado WarningBOX45 min
Jun 1, 7:40 PM EDTTornado WatchSPC2 hr
Jun 1, 7:59 PM EDTAreal Flood AdvisoryBOX66 min
Jun 1, 8:10 PM EDTSevere Thunderstorm WarningBOX44 min
Jun 8, 6:45 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 8, 8:12 PM EDTSevere Thunderstorm WarningBOX48 min
Jun 9, 12:37 AM EDTSevere Thunderstorm WarningBOX38 min
Jun 9, 1:04 AM EDTSevere Thunderstorm WarningBOX41 min
Jun 9, 2:34 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 9, 4:00 PM EDTSevere Thunderstorm WarningBOX60 min
Jun 9, 4:39 PM EDTSevere Thunderstorm WarningBOX66 min
Jun 9, 4:46 PM EDTAreal Flood AdvisoryBOX3 hr
Jun 9, 4:54 PM EDTSevere Thunderstorm WarningBOX54 min
Jun 14, 2:57 AM EDTAreal Flood AdvisoryBOX6 hr
Jun 17, 5:51 PM EDTAreal Flood AdvisoryBOX2 hr
Jun 25, 6:08 PM EDTAreal Flood AdvisoryBOX2 hr
Jul 6, 1:29 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 6, 10:34 PM EDTSevere Thunderstorm WarningBOX41 min
Jul 8, 1:51 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 8, 4:25 PM EDTAreal Flood AdvisoryBOX6 hr
Jul 19, 4:25 PM EDTExcessive Heat WatchBOX48 hr
Jul 20, 4:31 PM EDTHeat AdvisoryBOX28 hr
Jul 21, 4:51 PM EDTExcessive Heat WarningBOX27 hr
Jul 23, 3:38 AM EDTHeat AdvisoryBOX13 hr
Jul 26, 2:30 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 26, 4:09 PM EDTSevere Thunderstorm WarningBOX66 min
Jul 26, 4:52 PM EDTSevere Thunderstorm WarningBOX53 min
Jul 26, 4:59 PM EDTAreal Flood AdvisoryBOX98 min
Aug 1, 2:13 PM EDTSevere Thunderstorm WarningBOX47 min
Aug 1, 2:19 PM EDTFlash Flood WarningBOX116 min
Aug 1, 2:34 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 1, 3:41 PM EDTSevere Thunderstorm WarningBOX49 min
Aug 1, 4:15 PM EDTAreal Flood AdvisoryBOX3 hr
Aug 1, 4:18 PM EDTSevere Thunderstorm WarningBOX29 min
Aug 1, 4:35 PM EDTSevere Thunderstorm WarningBOX24 min
Aug 1, 5:10 PM EDTSevere Thunderstorm WarningBOX35 min
Aug 5, 6:29 PM EDTAreal Flood AdvisoryBOX119 min
Aug 14, 4:21 PM EDTFlood WatchBOX27 hr
Aug 15, 6:07 AM EDTAreal Flood WarningBOX3 hr
Aug 21, 1:20 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 21, 1:39 PM EDTSevere Thunderstorm WarningBOX66 min
Aug 21, 3:40 PM EDTSevere Thunderstorm WarningBOX35 min
Aug 26, 3:10 AM EDTFlood WatchBOX63 hr
Aug 26, 5:10 AM EDTTropical Storm WatchBOX30 hr
Aug 26, 5:33 PM EDTTropical Storm WarningBOX54 hr
Aug 28, 1:24 AM EDTAreal Flood WarningBOX24 hr
Aug 28, 5:02 AM EDTRiver Flood WarningBOX32 hr
Aug 28, 5:02 AM EDTRiver Flood WarningBOX4 days
Aug 28, 1:38 PM EDTRiver Flood WarningBOX51 hr
Aug 28, 5:43 PM EDTRiver Flood WarningBOX6 days
Aug 28, 5:43 PM EDTRiver Flood WarningBOX67 hr
Aug 28, 5:43 PM EDTRiver Flood WarningBOX5 days
Sep 5, 3:51 AM EDTFlash Flood WatchBOX24 hr
Sep 7, 4:48 AM EDTRiver Flood WarningBOX5 days
Sep 7, 12:44 PM EDTRiver Flood WarningBOX4 days
Sep 7, 4:02 PM EDTFlood WatchBOX20 hr
Sep 7, 10:50 PM EDTRiver Flood WarningBOX53 hr
Sep 8, 4:43 AM EDTAreal Flood AdvisoryBOX4 hr
Sep 8, 8:27 AM EDTAreal Flood WarningBOX11 hr
Sep 8, 8:31 AM EDTRiver Flood WarningBOX8 hr
Sep 8, 8:31 AM EDTRiver Flood WarningBOX65 hr
Sep 8, 11:20 AM EDTRiver Flood WarningBOX8 hr
Sep 15, 1:22 AM EDTAreal Flood AdvisoryBOX62 min
Sep 22, 4:23 PM EDTFlood WatchBOX36 hr
Sep 23, 3:52 PM EDTAreal Flood AdvisoryBOX3 hr
Sep 27, 3:12 AM EDTDense Fog AdvisoryBOX7 hr
Sep 28, 9:21 PM EDTAreal Flood AdvisoryBOX3 hr
Sep 29, 1:56 PM EDTAreal Flood AdvisoryBOX2 hr
Sep 30, 7:24 PM EDTAreal Flood AdvisoryBOX79 min
Sep 30, 8:12 PM EDTAreal Flood AdvisoryBOX3 hr
Oct 2, 11:03 AM EDTRiver Flood WarningBOX9 hr
Oct 28, 4:00 AM EDTWinter Storm WatchBOX25 hr
Oct 28, 3:27 PM EDTWinter Storm WarningBOX38 hr
Dec 4, 9:12 PM ESTDense Fog AdvisoryBOX12 hr
Dec 7, 12:17 PM ESTFlood WatchBOX19 hr
Dec 8, 1:23 AM ESTAreal Flood AdvisoryBOX4 hr
Dec 8, 3:41 AM ESTWind AdvisoryBOX6 hr
Dec 8, 4:39 AM ESTRiver Flood WarningBOX25 hr
Dec 8, 11:45 AM ESTRiver Flood WarningBOX57 hr
Dec 15, 4:03 PM ESTWind AdvisoryBOX20 hr
Dec 27, 4:16 AM ESTWind AdvisoryBOX21 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 archive20102012

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.