Alert archive / Massachusetts / Hampden County
Weather alerts in Hampden County, Massachusetts, 2026
86 weather alerts in 2026, 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 2026. Tap one for its archive.
- Alerts
- 86
- Warnings
- 36
- Watches
- 9
- Advisories
- 23
- Busiest month
- January20 alerts
- Busiest day
- August 8, 20268 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 2026 had a tornado report inside them.
Hampden County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 24 | 22 | 8% | 18 | 89% | 31 min |
| Flash flood warnings | 3 | 3 | 0% | 10 | 100% | 45 min |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Boston/Norton, MA: severe thunderstorm warnings | 52 | 43 | 17% | 134 | 94% | 26 min |
| NWS Boston/Norton, MA: flash flood warnings | 14 | 12 | 14% | 49 | 94% | 53 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 1, 7:29 AM EST | Snow Squall Warning | BOX | 61 min |
| Jan 6, 12:22 AM EST | Winter Weather Advisory | BOX | 34 hr |
| Jan 10, 12:58 AM EST | Winter Weather Advisory | BOX | 27 hr |
| Jan 11, 12:53 AM EST | Wind Advisory | BOX | 32 hr |
| Jan 11, 5:22 PM EST | Special Weather Statement | BOX | 53 min |
| Jan 11, 6:14 PM EST | Special Weather Statement | BOX | 46 min |
| Jan 16, 1:48 PM EST | Winter Weather Advisory | BOX | 27 hr |
| Jan 17, 9:55 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 17, 1:17 PM EST | Winter Weather Advisory | BOX | 42 hr |
| Jan 22, 12:17 AM EST | Extreme Cold Watch | BOX | 12 hr |
| Jan 22, 11:44 AM EST | Winter Storm Watch | BOX | 25 hr |
| Jan 22, 11:48 AM EST | Cold Weather Advisory | BOX | 46 hr |
| Jan 22, 11:48 AM EST | Extreme Cold Warning | BOX | 49 hr |
| Jan 23, 12:28 PM EST | Winter Storm Warning | BOX | 3 days |
| Jan 25, 11:55 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 25, 4:02 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 25, 7:26 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 29, 12:31 AM EST | Cold Weather Advisory | BOX | 34 hr |
| Jan 30, 12:17 PM EST | Cold Weather Advisory | BOX | 20 hr |
| Jan 31, 12:19 PM EST | Cold Weather Advisory | BOX | 22 hr |
| Feb 5, 1:04 AM EST | Extreme Cold Watch | BOX | 23 hr |
| Feb 6, 12:20 AM EST | Extreme Cold Warning | BOX | 61 hr |
| Feb 8, 12:42 PM EST | Cold Weather Advisory | BOX | 21 hr |
| Feb 10, 1:20 AM EST | Winter Weather Advisory | BOX | 25 hr |
| Feb 17, 11:38 AM EST | Winter Weather Advisory | BOX | 25 hr |
| Feb 19, 12:13 PM EST | Winter Weather Advisory | BOX | 39 hr |
| Feb 20, 12:15 PM EST | Winter Storm Watch | BOX | 38 hr |
| Feb 21, 12:29 PM EST | Blizzard Warning | BOX | 55 hr |
| Feb 21, 12:29 PM EST | Winter Storm Warning | BOX | 52 hr |
| Feb 23, 12:45 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 2, 12:54 PM EST | Winter Weather Advisory | BOX | 39 hr |
| Mar 3, 6:52 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 4, 12:18 PM EST | Winter Weather Advisory | BOX | 48 hr |
| Mar 5, 9:32 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 13, 2:16 PM EDT | Wind Advisory | BOX | 29 hr |
| Mar 15, 12:13 PM EDT | Wind Advisory | BOX | 44 hr |
| Mar 15, 12:14 PM EDT | Flood Watch | BOX | 38 hr |
| Mar 31, 8:40 PM EDT | Severe Thunderstorm Warning | BOX | 50 min |
| Apr 14, 7:09 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| Apr 14, 7:54 PM EDT | Severe Thunderstorm Warning | BOX | 32 min |
| Apr 15, 11:33 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| May 18, 12:57 PM EDT | Heat Advisory | BOX | 54 hr |
| May 19, 3:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 19, 5:15 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Jun 6, 9:49 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jun 10, 1:21 AM EDT | Heat Advisory | BOX | 67 hr |
| Jun 12, 1:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 18, 1:45 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 18, 4:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 18, 5:30 PM EDT | Tornado Warning | BOX | 26 min |
| Jun 26, 5:09 PM EDT | Severe Thunderstorm Warning | BOX | 48 min |
| Jun 28, 1:29 PM EDT | Extreme Heat Watch | BOX | 48 hr |
| Jun 30, 1:38 AM EDT | Extreme Heat Warning | BOX | 4 days |
| Jun 30, 1:25 PM EDT | Heat Advisory | BOX | 4 days |
| Jun 30, 2:54 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| Jun 30, 5:55 PM EDT | Severe Thunderstorm Warning | BOX | 65 min |
| Jun 30, 6:51 PM EDT | Severe Thunderstorm Warning | BOX | 29 min |
| Jul 1, 10:32 PM EDT | Severe Thunderstorm Warning | BOX | 58 min |
| Jul 1, 10:59 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Jul 1, 11:58 PM EDT | Severe Thunderstorm Warning | BOX | 38 min |
| Jul 2, 10:08 PM EDT | Severe Thunderstorm Warning | BOX | 56 min |
| Jul 2, 10:56 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Jul 2, 11:37 PM EDT | Severe Thunderstorm Warning | BOX | 53 min |
| Jul 13, 2:37 AM EDT | Heat Advisory | BOX | 57 hr |
| Jul 27, 2:07 PM EDT | Flood Watch | BOX | 54 hr |
| Jul 28, 12:39 PM EDT | Special Weather Statement | BOX | 51 min |
| Jul 28, 1:24 PM EDT | Severe Thunderstorm Warning | BOX | 35 min |
| Jul 28, 2:14 PM EDT | Special Weather Statement | BOX | 61 min |
| Jul 29, 2:58 PM EDT | Flash Flood Warning | BOX | 95 min |
| Jul 29, 4:56 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Jul 29, 5:50 PM EDT | Flash Flood Warning | BOX | 93 min |
| Aug 3, 3:28 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 5:55 AM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 3, 12:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 1:25 PM EDT | Heat Advisory | BOX | 55 hr |
| Aug 7, 8:44 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Aug 7, 8:52 PM EDT | Severe Thunderstorm Warning | BOX | 53 min |
| Aug 8, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 8, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 8, 4:41 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Aug 8, 5:08 PM EDT | Severe Thunderstorm Warning | BOX | 67 min |
| Aug 8, 5:43 PM EDT | Severe Thunderstorm Warning | BOX | 62 min |
| Aug 8, 6:25 PM EDT | Severe Thunderstorm Warning | BOX | 13 min |
| Aug 13, 5:09 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Aug 14, 3:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 24, 12:38 PM EDT | Wind Advisory | BOX | 71 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 archive2025
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.