Alert archive / Massachusetts / Hampden County
Weather alerts in Hampden County, Massachusetts, 2015
176 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hampden County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 176
- Warnings
- 33
- Watches
- 26
- Advisories
- 49
- Busiest month
- May31 alerts
- Busiest day
- June 23, 201511 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hampden County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 9 | 31% | 11 | 82% | 15 min |
| Flash flood warnings | 0 | 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, 4:12 AM EST | Winter Storm Watch | BOX | 12 hr |
| Jan 2, 4:09 PM EST | Winter Weather Advisory | BOX | 44 hr |
| Jan 3, 4:21 AM EST | Winter Storm Warning | BOX | 32 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 Warning | BOX | 42 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 16, 4:10 AM EST | Wind Chill Advisory | BOX | 24 hr |
| Jan 16, 11:24 AM EST | Special Weather Statement | BOX | 2 hr |
| Jan 18, 4:02 AM EST | Winter Weather Advisory | BOX | 4 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, 4:06 AM EST | Winter Weather Advisory | BOX | 39 hr |
| Jan 23, 3:55 PM EST | Winter Storm Warning | BOX | 27 hr |
| Jan 24, 4:28 AM EST | Special Weather Statement | BOX | 62 min |
| Jan 25, 3:52 AM EST | Winter Storm Watch | BOX | 24 hr |
| Jan 25, 3:58 PM EST | Winter Storm Warning | BOX | 54 hr |
| Jan 26, 11:32 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 27, 4:28 AM EST | Mesoscale Discussion | SPC | 5 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 2, 1:56 PM EST | Special Weather Statement | BOX | 49 min |
| Feb 2, 3:14 PM EST | Special Weather Statement | BOX | 91 min |
| Feb 2, 3:54 PM EST | Wind Chill Advisory | BOX | 18 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 19, 3:51 PM EST | Wind Chill Warning | BOX | 18 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 3, 7:01 PM EST | Mesoscale Discussion | SPC | 4 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 4, 4:53 AM EDT | Special Weather Statement | BOX | 37 min |
| Apr 8, 3:42 AM EDT | Winter Weather Advisory | BOX | 32 hr |
| Apr 15, 4:24 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 17, 3:47 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 22, 4:24 PM EDT | Special Weather Statement | BOX | 51 min |
| Apr 22, 5:24 PM EDT | Special Weather Statement | BOX | 81 min |
| May 3, 4:09 PM EDT | Fire Weather Watch | BOX | 12 hr |
| May 4, 3:56 AM EDT | Red Flag Warning | BOX | 16 hr |
| May 10, 9:06 AM EDT | Red Flag Warning | BOX | 11 hr |
| May 11, 4:27 PM EDT | Fire Weather Watch | BOX | 12 hr |
| May 12, 4:00 AM EDT | Red Flag Warning | BOX | 16 hr |
| May 12, 2:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 4:03 PM EDT | Fire Weather Watch | BOX | 11 hr |
| May 13, 3:14 AM EDT | Frost Advisory | BOX | 28 hr |
| May 13, 3:20 AM EDT | Red Flag Warning | BOX | 15 hr |
| May 19, 7:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 8:45 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| May 19, 9:31 PM EDT | Special Weather Statement | BOX | 44 min |
| May 20, 2:27 PM EDT | Frost Advisory | BOX | 16 hr |
| May 22, 4:03 PM EDT | Frost Advisory | BOX | 14 hr |
| May 27, 2:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 4:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| May 27, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 27, 5:29 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| May 27, 6:42 PM EDT | Severe Thunderstorm Warning | BOX | 37 min |
| May 27, 7:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 7:39 PM EDT | Special Weather Statement | BOX | 51 min |
| May 28, 11:16 AM EDT | Mesoscale Discussion | SPC | 89 min |
| May 28, 11:30 AM EDT | Mesoscale Discussion | SPC | 60 min |
| May 28, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 28, 3:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 28, 4:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 28, 4:48 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| May 28, 4:54 PM EDT | Special Weather Statement | BOX | 51 min |
| 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 |
| Jun 9, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 9, 3:20 PM EDT | Special Weather Statement | BOX | 40 min |
| Jun 9, 4:23 PM EDT | Special Weather Statement | BOX | 52 min |
| Jun 9, 4:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 9, 4:32 PM EDT | Severe Thunderstorm Warning | BOX | 43 min |
| Jun 9, 4:34 PM EDT | Areal Flood Warning | BOX | 116 min |
| Jun 9, 5:05 PM EDT | Areal Flood Warning | BOX | 115 min |
| Jun 12, 10:09 PM EDT | Severe Thunderstorm Warning | BOX | 51 min |
| Jun 12, 10:26 PM EDT | Special Weather Statement | BOX | 64 min |
| Jun 15, 4:34 AM EDT | Areal Flood Advisory | BOX | 116 min |
| Jun 23, 8:57 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 23, 10:07 AM EDT | Special Weather Statement | BOX | 53 min |
| Jun 23, 10:12 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 10:47 AM EDT | Special Weather Statement | BOX | 58 min |
| Jun 23, 2:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 23, 3:47 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 23, 4:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 23, 5:00 PM EDT | Special Weather Statement | BOX | 45 min |
| Jun 23, 6:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 23, 7:19 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Jun 23, 7:45 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Jun 23, 8:01 PM EDT | Special Weather Statement | BOX | 59 min |
| Jun 23, 8:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 27, 4:28 AM EDT | Flood Watch | BOX | 31 hr |
| Jul 1, 6:06 AM EDT | Special Weather Statement | BOX | 54 min |
| Jul 1, 6:25 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Jul 1, 1:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 5:48 PM EDT | Special Weather Statement | BOX | 57 min |
| Jul 7, 5:48 PM EDT | Areal Flood Advisory | BOX | 117 min |
| Jul 9, 4:01 AM EDT | Flash Flood Watch | BOX | 11 hr |
| Jul 14, 12:33 PM EDT | Special Weather Statement | BOX | 42 min |
| Jul 19, 4:00 AM EDT | Heat Advisory | BOX | 14 hr |
| Jul 19, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 19, 5:43 PM EDT | Special Weather Statement | BOX | 92 min |
| Jul 19, 7:43 PM EDT | Severe Thunderstorm Warning | BOX | 62 min |
| Jul 21, 6:09 PM EDT | Special Weather Statement | BOX | 66 min |
| Jul 24, 2:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 5:52 PM EDT | Special Weather Statement | BOX | 38 min |
| Jul 26, 5:55 PM EDT | Severe Thunderstorm Warning | BOX | 65 min |
| Jul 26, 6:50 PM EDT | Severe Thunderstorm Warning | BOX | 28 min |
| Jul 27, 6:10 PM EDT | Special Weather Statement | BOX | 65 min |
| Jul 27, 6:15 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jul 28, 6:40 AM EDT | Dense Fog Advisory | BOX | 2 hr |
| Jul 28, 2:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 28, 3:31 PM EDT | Special Weather Statement | BOX | 59 min |
| Jul 29, 3:26 AM EDT | Heat Advisory | BOX | 6 hr |
| Jul 30, 4:04 PM EDT | Special Weather Statement | BOX | 41 min |
| Aug 4, 12:18 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 4, 2:05 PM EDT | Special Weather Statement | BOX | 40 min |
| Aug 4, 2:17 PM EDT | Severe Thunderstorm Warning | BOX | 58 min |
| Aug 4, 2:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 4, 6:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 11, 10:10 AM EDT | Special Weather Statement | BOX | 95 min |
| Aug 15, 1:20 PM EDT | Special Weather Statement | BOX | 40 min |
| Aug 15, 2:22 PM EDT | Special Weather Statement | BOX | 38 min |
| Aug 18, 12:37 PM EDT | Special Weather Statement | BOX | 38 min |
| Aug 18, 1:26 PM EDT | Special Weather Statement | BOX | 49 min |
| Aug 18, 5:29 PM EDT | Special Weather Statement | BOX | 46 min |
| Aug 25, 1:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 25, 4:50 PM EDT | Areal Flood Warning | BOX | 115 min |
| Aug 25, 4:55 PM EDT | Special Weather Statement | BOX | 50 min |
| Aug 25, 7:00 PM EDT | Special Weather Statement | BOX | 90 min |
| Aug 25, 7:25 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Aug 25, 8:05 PM EDT | Special Weather Statement | BOX | 85 min |
| Sep 10, 11:35 AM EDT | Flash Flood Watch | BOX | 17 hr |
| Sep 13, 5:15 PM EDT | Special Weather Statement | BOX | 45 min |
| Sep 13, 5:45 PM EDT | Special Weather Statement | BOX | 45 min |
| Sep 29, 4:19 AM EDT | Flood Watch | BOX | 32 hr |
| Sep 30, 7:36 AM EDT | Areal Flood Warning | BOX | 6 hr |
| Oct 10, 3:27 AM EDT | Frost Advisory | BOX | 28 hr |
| Oct 16, 3:13 PM EDT | Freeze Watch | BOX | 12 hr |
| Oct 17, 3:10 AM EDT | Freeze Warning | BOX | 30 hr |
| Oct 29, 1:08 AM EDT | Special Weather Statement | BOX | 37 min |
| Oct 29, 1:39 AM EDT | Special Weather Statement | BOX | 51 min |
| Oct 29, 1:15 PM EDT | Special Weather Statement | BOX | 45 min |
| Oct 29, 1:40 PM EDT | Special Weather Statement | BOX | 35 min |
| 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 28, 3:08 PM EST | Winter Storm Watch | BOX | 12 hr |
| Dec 28, 10:25 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 29, 3:42 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 29, 1:06 PM EST | Freezing Rain Advisory | BOX | 9 hr |
| Dec 30, 3:49 AM EST | Freezing Rain Advisory | BOX | 23 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.