Alert archive / Massachusetts / Hampshire County
Weather alerts in Hampshire County, Massachusetts, 2012
183 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hampshire County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 183
- Warnings
- 49
- Watches
- 34
- Advisories
- 54
- Busiest month
- August35 alerts
- Busiest day
- September 8, 201213 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 1 tornado warnings covering Hampshire County in 2012 had a tornado report inside them.
Hampshire County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 24 | 14 | 42% | 9 | 33% | 20 min |
| Flash flood warnings | 4 | 3 | 25% | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 5 | 0 | 100% | 0 | ||
| NWS Boston/Norton, MA: severe thunderstorm warnings | 119 | 68 | 43% | 244 | 67% | 25 min |
| NWS Boston/Norton, MA: flash flood warnings | 25 | 14 | 44% | 58 | 74% | 63 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 |
|---|---|---|---|
| Dec 31, 8:20 PM EST | Dense Fog Advisory | BOX | 7 hr |
| Jan 10, 4:35 PM EST | Winter Storm Watch | BOX | 23 hr |
| Jan 11, 4:48 AM EST | Winter Weather Advisory | BOX | 34 hr |
| Jan 12, 7:34 PM EST | Wind Advisory | BOX | 28 hr |
| Jan 13, 1:31 AM EST | Winter Weather Advisory | BOX | 10 hr |
| Jan 13, 2:45 PM EST | Winter Weather Advisory | BOX | 7 hr |
| Jan 16, 3:53 AM EST | Winter Weather Advisory | BOX | 30 hr |
| Jan 17, 3:54 PM EST | Wind Advisory | BOX | 24 hr |
| Jan 20, 1:15 PM EST | Winter Weather Advisory | BOX | 29 hr |
| Jan 22, 3:56 PM EST | Freezing Rain Advisory | BOX | 31 hr |
| Jan 23, 11:09 AM EST | Freezing Rain Advisory | BOX | 10 hr |
| Jan 26, 4:10 AM EST | Winter Weather Advisory | BOX | 32 hr |
| Feb 23, 4:16 PM EST | Winter Weather Advisory | BOX | 29 hr |
| Feb 23, 11:48 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 24, 4:50 AM EST | Wind Advisory | BOX | 47 hr |
| Feb 28, 4:22 AM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 29, 4:24 AM EST | Winter Storm Warning | BOX | 38 hr |
| Feb 29, 11:05 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 2, 3:54 PM EST | Winter Weather Advisory | BOX | 18 hr |
| Mar 7, 4:15 PM EST | Wind Advisory | BOX | 35 hr |
| Mar 20, 3:54 PM EDT | Dense Fog Advisory | BOX | 18 hr |
| Mar 26, 4:06 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Mar 27, 1:50 AM EDT | Red Flag Warning | BOX | 17 hr |
| Apr 2, 4:26 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 3, 4:16 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 3, 4:30 PM EDT | Fire Weather Watch | BOX | 10 hr |
| Apr 4, 2:56 AM EDT | Red Flag Warning | BOX | 17 hr |
| Apr 5, 4:05 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 5, 3:19 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 6, 3:48 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 7, 3:44 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 8, 2:10 PM EDT | Fire Weather Watch | BOX | 2 hr |
| Apr 8, 4:31 PM EDT | Red Flag Warning | BOX | 27 hr |
| Apr 9, 4:45 PM EDT | Fire Weather Watch | BOX | 10 hr |
| Apr 10, 12:23 PM EDT | Red Flag Warning | BOX | 7 hr |
| Apr 15, 4:02 PM EDT | Fire Weather Watch | BOX | 12 hr |
| Apr 16, 4:15 AM EDT | Red Flag Warning | BOX | 16 hr |
| Apr 16, 3:37 PM EDT | Fire Weather Watch | BOX | 13 hr |
| Apr 17, 4:37 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 21, 4:12 PM EDT | Flood Watch | BOX | 36 hr |
| Apr 24, 3:56 PM EDT | Freeze Watch | BOX | 24 hr |
| Apr 25, 3:50 PM EDT | Freeze Warning | BOX | 16 hr |
| Apr 26, 3:38 PM EDT | Freeze Watch | BOX | 13 hr |
| Apr 27, 4:20 AM EDT | Freeze Warning | BOX | 30 hr |
| Apr 28, 3:45 AM EDT | Freeze Watch | BOX | 12 hr |
| Apr 28, 4:13 PM EDT | Freeze Warning | BOX | 16 hr |
| Apr 29, 4:21 AM EDT | Freeze Watch | BOX | 12 hr |
| Apr 29, 3:59 PM EDT | Freeze Warning | BOX | 17 hr |
| May 10, 3:13 AM EDT | Areal Flood Advisory | BOX | 107 min |
| May 11, 4:03 AM EDT | Frost Advisory | BOX | 28 hr |
| May 16, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 16, 6:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| May 16, 8:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 16, 8:53 PM EDT | Special Weather Statement | BOX | 67 min |
| May 16, 9:13 PM EDT | Special Weather Statement | BOX | 62 min |
| May 17, 3:37 AM EDT | Frost Advisory | BOX | 27 hr |
| May 29, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 29, 5:59 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| May 29, 6:34 PM EDT | Special Weather Statement | BOX | 56 min |
| May 29, 6:39 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| May 29, 7:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 29, 7:49 PM EDT | Special Weather Statement | BOX | 56 min |
| May 29, 7:57 PM EDT | Special Weather Statement | BOX | 63 min |
| May 30, 5:11 PM EDT | Special Weather Statement | BOX | 49 min |
| May 30, 5:54 PM EDT | Special Weather Statement | BOX | 51 min |
| Jun 3, 4:06 PM EDT | Special Weather Statement | BOX | 84 min |
| Jun 19, 3:58 PM EDT | Heat Advisory | BOX | 27 hr |
| Jun 20, 4:14 PM EDT | Heat Advisory | BOX | 27 hr |
| Jun 22, 1:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 3:44 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 7:44 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jun 25, 8:26 AM EDT | Special Weather Statement | BOX | 34 min |
| Jun 25, 2:40 PM EDT | Special Weather Statement | BOX | 35 min |
| Jun 25, 3:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 25, 3:49 PM EDT | Special Weather Statement | BOX | 41 min |
| Jul 1, 3:06 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jul 1, 3:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 17, 3:56 AM EDT | Heat Advisory | BOX | 15 hr |
| Jul 18, 10:25 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 12:20 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 18, 12:41 PM EDT | Heat Advisory | BOX | 6 hr |
| Jul 18, 2:04 PM EDT | Severe Thunderstorm Warning | BOX | 56 min |
| Jul 24, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 24, 1:56 PM EDT | Special Weather Statement | BOX | 79 min |
| Jul 24, 3:07 PM EDT | Severe Thunderstorm Warning | BOX | 36 min |
| Jul 24, 3:57 PM EDT | Special Weather Statement | BOX | 63 min |
| Jul 26, 11:26 AM EDT | Flash Flood Watch | BOX | 11 hr |
| Jul 26, 1:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 26, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 6:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 28, 3:54 AM EDT | Flash Flood Watch | BOX | 24 hr |
| Jul 28, 12:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 12:59 PM EDT | Areal Flood Advisory | BOX | 6 hr |
| Jul 28, 1:35 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 28, 2:28 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jul 28, 3:18 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jul 28, 3:33 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 4, 4:23 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 5, 4:03 AM EDT | Flash Flood Watch | BOX | 19 hr |
| Aug 5, 2:02 PM EDT | Special Weather Statement | BOX | 58 min |
| Aug 5, 3:03 PM EDT | Severe Thunderstorm Warning | BOX | 42 min |
| Aug 5, 3:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 5, 8:08 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Aug 5, 8:18 PM EDT | Areal Flood Advisory | BOX | 117 min |
| Aug 9, 1:39 PM EDT | Special Weather Statement | BOX | 51 min |
| Aug 9, 1:48 PM EDT | Severe Thunderstorm Warning | BOX | 32 min |
| Aug 9, 1:53 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 9, 2:03 PM EDT | Special Weather Statement | BOX | 57 min |
| Aug 9, 2:18 PM EDT | Areal Flood Advisory | BOX | 53 min |
| Aug 9, 2:53 PM EDT | Areal Flood Advisory | BOX | 45 min |
| Aug 10, 10:57 AM EDT | Special Weather Statement | BOX | 63 min |
| Aug 10, 11:07 AM EDT | Special Weather Statement | BOX | 53 min |
| Aug 10, 11:52 AM EDT | Areal Flood Advisory | BOX | 6 hr |
| Aug 10, 12:29 PM EDT | Special Weather Statement | BOX | 61 min |
| Aug 10, 1:15 PM EDT | Severe Thunderstorm Warning | BOX | 30 min |
| Aug 10, 3:31 PM EDT | Tornado Watch | SPC | 5 hr |
| Aug 10, 3:36 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 10, 5:00 PM EDT | Tornado Warning | BOX | 45 min |
| Aug 10, 5:27 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 10, 5:45 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Aug 11, 12:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 11, 1:13 PM EDT | Areal Flood Advisory | BOX | 50 min |
| Aug 11, 5:14 PM EDT | Special Weather Statement | BOX | 46 min |
| Aug 11, 6:09 PM EDT | Special Weather Statement | BOX | 51 min |
| Aug 12, 7:32 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 15, 3:48 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 15, 5:28 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 15, 6:11 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Aug 15, 6:24 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 15, 7:14 PM EDT | Severe Thunderstorm Warning | BOX | 27 min |
| Aug 16, 3:10 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 16, 6:10 AM EDT | Special Weather Statement | BOX | 35 min |
| Sep 5, 4:25 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Sep 5, 8:13 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Sep 7, 7:34 PM EDT | Severe Thunderstorm Warning | BOX | 26 min |
| Sep 7, 7:57 PM EDT | Areal Flood Advisory | BOX | 93 min |
| Sep 8, 10:39 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 11:18 AM EDT | Tornado Watch | SPC | 10 hr |
| Sep 8, 1:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 8, 2:30 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Sep 8, 3:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 8, 4:47 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 8, 5:45 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Sep 8, 5:56 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Sep 8, 6:31 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 8, 6:50 PM EDT | Severe Thunderstorm Warning | BOX | 25 min |
| Sep 8, 6:58 PM EDT | Severe Thunderstorm Warning | BOX | 32 min |
| Sep 8, 7:15 PM EDT | Severe Thunderstorm Warning | BOX | 30 min |
| Sep 8, 7:30 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Sep 17, 3:47 PM EDT | High Wind Watch | BOX | 13 hr |
| Sep 18, 4:37 AM EDT | Wind Advisory | BOX | 23 hr |
| Sep 18, 4:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 7:04 PM EDT | Special Weather Statement | BOX | 86 min |
| Sep 18, 7:31 PM EDT | High Wind Warning | BOX | 10 hr |
| Sep 18, 7:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 18, 8:18 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Sep 18, 8:52 PM EDT | Areal Flood Advisory | BOX | 5 hr |
| Sep 18, 9:16 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 18, 10:16 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 19, 12:27 AM EDT | Areal Flood Warning | BOX | 80 min |
| Sep 22, 9:35 PM EDT | Special Weather Statement | BOX | 55 min |
| Sep 22, 10:28 PM EDT | Special Weather Statement | BOX | 62 min |
| Oct 4, 11:17 PM EDT | Dense Fog Advisory | BOX | 10 hr |
| Oct 11, 4:17 AM EDT | Freeze Watch | BOX | 23 hr |
| Oct 12, 3:37 AM EDT | Freeze Warning | BOX | 30 hr |
| Oct 27, 4:50 PM EDT | High Wind Watch | BOX | 21 hr |
| Oct 27, 4:51 PM EDT | Flood Watch | BOX | 56 hr |
| Oct 28, 4:38 AM EDT | High Wind Warning | BOX | 44 hr |
| Oct 30, 12:33 AM EDT | Wind Advisory | BOX | 13 hr |
| Oct 30, 5:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Nov 7, 3:30 AM EST | Winter Weather Advisory | BOX | 28 hr |
| Dec 1, 4:50 AM EST | Winter Weather Advisory | BOX | 31 hr |
| Dec 2, 9:32 AM EST | Dense Fog Advisory | BOX | 4 hr |
| Dec 9, 3:48 PM EST | Winter Weather Advisory | BOX | 12 hr |
| Dec 16, 4:07 AM EST | Winter Weather Advisory | BOX | 48 hr |
| Dec 16, 8:19 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 21, 4:02 PM EST | Areal Flood Advisory | BOX | 3 hr |
| Dec 22, 4:18 AM EST | Wind Advisory | BOX | 12 hr |
| Dec 25, 5:03 AM EST | Winter Storm Watch | BOX | 24 hr |
| Dec 25, 4:36 PM EST | Winter Storm Warning | BOX | 46 hr |
| Dec 26, 4:39 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 28, 4:43 PM EST | Winter Weather Advisory | BOX | 33 hr |
| Dec 29, 4:25 AM EST | Winter Storm Warning | BOX | 21 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 archive20112013
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.