Alert archive / Massachusetts / Hampden County
Weather alerts in Hampden County, Massachusetts, 2025
128 weather alerts in 2025, 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 2025. Tap one for its archive.
- Alerts
- 128
- Warnings
- 48
- Watches
- 22
- Advisories
- 35
- Busiest month
- July28 alerts
- Busiest day
- June 6, 20259 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 Hampden County in 2025 had a tornado report inside them.
Hampden County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 28 | 25 | 11% | 26 | 88% | 30 min |
| Flash flood warnings | 3 | 2 | 33% | 3 | 67% | 78 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 3 | 1 | 67% | 5 | 80% | 12 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 72 | 61 | 15% | 273 | 84% | 25 min |
| NWS Boston/Norton, MA: flash flood warnings | 19 | 14 | 26% | 45 | 87% | 70 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 7, 8:24 AM EST | Wind Advisory | BOX | 61 hr |
| Jan 13, 5:05 PM EST | Special Weather Statement | BOX | 55 min |
| Jan 17, 3:07 PM EST | Winter Storm Watch | BOX | 35 hr |
| Jan 18, 2:33 PM EST | Winter Storm Warning | BOX | 40 hr |
| Jan 19, 1:49 AM EST | Dense Fog Advisory | BOX | 7 hr |
| Jan 19, 4:34 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 21, 2:02 AM EST | Cold Weather Advisory | BOX | 32 hr |
| Jan 28, 3:28 AM EST | Wind Advisory | BOX | 12 hr |
| Jan 28, 8:48 AM EST | Special Weather Statement | BOX | 42 min |
| Jan 29, 3:35 AM EST | Wind Advisory | BOX | 18 hr |
| Jan 29, 11:39 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 29, 12:58 PM EST | Snow Squall Warning | BOX | 32 min |
| Feb 2, 2:02 PM EST | Winter Weather Advisory | BOX | 13 hr |
| Feb 4, 2:27 PM EST | Winter Weather Advisory | BOX | 53 hr |
| Feb 6, 2:39 PM EST | Winter Storm Watch | BOX | 36 hr |
| Feb 6, 3:23 PM EST | Wind Advisory | BOX | 24 hr |
| Feb 8, 2:55 AM EST | Winter Storm Warning | BOX | 30 hr |
| Feb 8, 6:21 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 8, 10:01 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 11, 1:58 PM EST | Winter Weather Advisory | BOX | 43 hr |
| Feb 13, 3:28 AM EST | Wind Advisory | BOX | 36 hr |
| Feb 14, 3:12 AM EST | Winter Storm Watch | BOX | 12 hr |
| Feb 14, 4:05 AM EST | Winter Weather Advisory | BOX | 66 hr |
| Feb 15, 3:32 AM EST | High Wind Watch | BOX | 24 hr |
| Feb 15, 3:01 PM EST | Winter Storm Warning | BOX | 31 hr |
| Feb 16, 3:16 AM EST | High Wind Warning | BOX | 62 hr |
| Feb 16, 3:16 AM EST | Wind Advisory | BOX | 62 hr |
| Feb 17, 3:05 PM EST | Cold Weather Advisory | BOX | 19 hr |
| Mar 6, 2:19 AM EST | High Wind Warning | BOX | 41 hr |
| Mar 6, 2:19 AM EST | Wind Advisory | BOX | 41 hr |
| Mar 8, 2:17 AM EST | Wind Advisory | BOX | 19 hr |
| Mar 17, 11:47 AM EDT | River Flood Warning | BOX | 53 hr |
| Mar 17, 11:47 AM EDT | River Flood Warning | BOX | 58 hr |
| Mar 31, 3:07 AM EDT | Dense Fog Advisory | BOX | 7 hr |
| Apr 7, 1:31 PM EDT | Wind Advisory | BOX | 30 hr |
| Apr 11, 2:03 PM EDT | Winter Weather Advisory | BOX | 20 hr |
| May 3, 12:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 1:07 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 3, 3:21 PM EDT | Severe Thunderstorm Warning | BOX | 54 min |
| May 3, 3:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 3, 3:56 PM EDT | Severe Thunderstorm Warning | BOX | 49 min |
| May 3, 4:07 PM EDT | Severe Thunderstorm Warning | BOX | 38 min |
| May 3, 4:40 PM EDT | Severe Thunderstorm Warning | BOX | 50 min |
| May 5, 2:01 PM EDT | Flood Watch | BOX | 27 hr |
| May 8, 3:53 AM EDT | Flood Watch | BOX | 48 hr |
| May 10, 5:28 AM EDT | River Flood Watch | BOX | 40 hr |
| May 10, 5:28 AM EDT | River Flood Watch | BOX | 45 hr |
| May 10, 12:04 PM EDT | River Flood Warning | BOX | 40 hr |
| May 10, 12:04 PM EDT | River Flood Warning | BOX | 46 hr |
| May 17, 6:20 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| May 17, 6:59 PM EDT | Severe Thunderstorm Warning | BOX | 42 min |
| Jun 6, 2:24 AM EDT | Flood Watch | BOX | 19 hr |
| Jun 6, 12:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 6, 4:16 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Jun 6, 4:52 PM EDT | Severe Thunderstorm Warning | BOX | 53 min |
| Jun 6, 5:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 6, 5:44 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jun 6, 6:09 PM EDT | Severe Thunderstorm Warning | BOX | 51 min |
| Jun 6, 6:31 PM EDT | Flash Flood Warning | BOX | 83 min |
| Jun 6, 7:14 PM EDT | Severe Thunderstorm Warning | BOX | 22 min |
| Jun 18, 7:55 AM EDT | Heat Advisory | BOX | 36 hr |
| Jun 19, 12:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 19, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 19, 3:13 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jun 19, 4:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 20, 12:03 AM EDT | Wind Advisory | BOX | 18 hr |
| Jun 20, 1:19 PM EDT | Extreme Heat Watch | BOX | 13 hr |
| Jun 21, 2:04 AM EDT | Heat Advisory | BOX | 5 days |
| Jun 21, 2:04 AM EDT | Extreme Heat Warning | BOX | 4 days |
| Jul 1, 12:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 4:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 1, 5:48 PM EDT | Severe Thunderstorm Warning | BOX | 42 min |
| Jul 1, 6:39 PM EDT | Severe Thunderstorm Warning | BOX | 51 min |
| Jul 3, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 3:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 4:52 PM EDT | Severe Thunderstorm Warning | BOX | 38 min |
| Jul 3, 5:37 PM EDT | Severe Thunderstorm Warning | BOX | 38 min |
| Jul 3, 6:09 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| Jul 4, 12:43 PM EDT | Heat Advisory | BOX | 4 days |
| Jul 8, 2:34 AM EDT | Flood Watch | BOX | 23 hr |
| Jul 8, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 11:40 PM EDT | Severe Thunderstorm Warning | BOX | 49 min |
| Jul 11, 6:39 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| Jul 14, 2:07 AM EDT | Flood Watch | BOX | 19 hr |
| Jul 14, 9:04 AM EDT | Heat Advisory | BOX | 3 days |
| Jul 14, 1:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 5:55 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Jul 20, 2:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 20, 4:08 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 20, 4:59 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jul 20, 5:20 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| Jul 20, 5:34 PM EDT | Severe Thunderstorm Warning | BOX | 56 min |
| Jul 22, 1:00 PM EDT | Heat Advisory | BOX | 3 days |
| Jul 25, 1:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 25, 1:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 1:36 PM EDT | Heat Advisory | BOX | 4 days |
| Aug 13, 12:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 5:00 PM EDT | Severe Thunderstorm Warning | BOX | 33 min |
| Aug 13, 5:03 PM EDT | Flash Flood Warning | BOX | 85 min |
| Sep 6, 11:56 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Sep 6, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 6, 2:18 PM EDT | Tornado Warning | BOX | 42 min |
| Sep 6, 2:29 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Sep 6, 2:50 PM EDT | Severe Thunderstorm Warning | BOX | 55 min |
| Sep 6, 3:31 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Sep 6, 3:51 PM EDT | Severe Thunderstorm Warning | BOX | 54 min |
| Sep 6, 4:25 PM EDT | Severe Thunderstorm Warning | BOX | 65 min |
| Oct 8, 3:06 AM EDT | Freeze Watch | BOX | 23 hr |
| Oct 9, 2:28 AM EDT | Freeze Warning | BOX | 31 hr |
| Oct 30, 2:11 PM EDT | Wind Advisory | BOX | 39 hr |
| Nov 3, 1:31 PM EST | Wind Advisory | BOX | 29 hr |
| Nov 4, 10:00 AM EST | High Wind Watch | BOX | 26 hr |
| Nov 5, 12:47 AM EST | High Wind Warning | BOX | 26 hr |
| Nov 5, 11:52 AM EST | Wind Advisory | BOX | 17 hr |
| Nov 30, 1:14 PM EST | Winter Storm Watch | BOX | 23 hr |
| Dec 1, 12:35 PM EST | Winter Storm Warning | BOX | 42 hr |
| Dec 1, 12:35 PM EST | Winter Weather Advisory | BOX | 42 hr |
| Dec 2, 1:34 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 10, 1:05 PM EST | Wind Advisory | BOX | 38 hr |
| Dec 17, 1:45 PM EST | Wind Advisory | BOX | 64 hr |
| Dec 23, 1:18 PM EST | Wind Advisory | BOX | 26 hr |
| Dec 25, 12:58 PM EST | Winter Weather Advisory | BOX | 43 hr |
| Dec 26, 12:50 PM EST | Winter Storm Warning | BOX | 17 hr |
| Dec 27, 12:40 PM EST | Winter Weather Advisory | BOX | 41 hr |
| Dec 29, 12:38 AM EST | High Wind Watch | BOX | 12 hr |
| Dec 29, 12:39 PM EST | High Wind Warning | BOX | 24 hr |
| Dec 29, 12:39 PM EST | Wind Advisory | BOX | 31 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 archive20242026
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.