Alert archive / Massachusetts / Hampden County
Weather alerts in Hampden County, Massachusetts, 2019
188 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 188
- Warnings
- 60
- Watches
- 25
- Advisories
- 46
- Busiest month
- August43 alerts
- Busiest day
- August 3, 201911 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 2 tornado warnings covering Hampden County in 2019 had a tornado report inside them.
Hampden County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 30 | 16 | 47% | 53 | 85% | 21 min |
| Flash flood warnings | 4 | 0 | 100% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 13 | 2 | 85% | 7 | 86% | 23 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 120 | 68 | 43% | 336 | 63% | 23 min |
| NWS Boston/Norton, MA: flash flood warnings | 12 | 1 | 92% | 1 | 100% | 47 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 4, 3:12 PM EST | Winter Weather Advisory | BOX | 19 hr |
| Jan 7, 3:51 PM EST | Winter Weather Advisory | BOX | 46 hr |
| Jan 8, 7:08 PM EST | Winter Weather Advisory | BOX | 4 hr |
| Jan 9, 4:17 AM EST | Wind Advisory | BOX | 12 hr |
| Jan 17, 4:10 AM EST | Winter Storm Watch | BOX | 48 hr |
| Jan 18, 3:33 PM EST | Winter Storm Warning | BOX | 48 hr |
| Jan 20, 4:20 AM EST | Wind Chill Warning | BOX | 47 hr |
| Jan 20, 4:20 AM EST | Wind Chill Advisory | BOX | 54 hr |
| Jan 20, 6:42 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 23, 3:50 AM EST | Flash Flood Watch | BOX | 39 hr |
| Jan 23, 10:40 AM EST | Winter Weather Advisory | BOX | 10 hr |
| Jan 24, 11:45 AM EST | Areal Flood Advisory | BOX | 4 hr |
| Jan 24, 1:32 PM EST | Areal Flood Warning | BOX | 8 hr |
| Jan 24, 9:31 PM EST | Areal Flood Warning | BOX | 3 hr |
| Jan 25, 12:34 AM EST | Areal Flood Warning | BOX | 3 hr |
| Jan 25, 4:27 AM EST | Areal Flood Warning | BOX | 3 hr |
| Jan 25, 7:09 AM EST | Areal Flood Warning | BOX | 111 min |
| Jan 28, 2:57 AM EST | Winter Storm Watch | BOX | 24 hr |
| Jan 29, 3:22 AM EST | Winter Storm Warning | BOX | 24 hr |
| Jan 29, 3:22 AM EST | Winter Weather Advisory | BOX | 24 hr |
| Jan 30, 3:21 AM EST | Wind Advisory | BOX | 18 hr |
| Jan 30, 3:29 AM EST | Wind Chill Warning | BOX | 31 hr |
| Jan 30, 3:29 AM EST | Wind Chill Advisory | BOX | 30 hr |
| Jan 30, 11:10 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 30, 4:01 PM EST | Snow Squall Warning | BOX | 59 min |
| Jan 30, 5:30 PM EST | Snow Squall Warning | BOX | 30 min |
| Jan 31, 10:53 AM EST | Wind Chill Advisory | BOX | 23 hr |
| Feb 5, 3:16 PM EST | Winter Weather Advisory | BOX | 36 hr |
| Feb 8, 3:29 AM EST | Wind Advisory | BOX | 35 hr |
| Feb 10, 3:49 PM EST | Winter Storm Watch | BOX | 35 hr |
| Feb 11, 4:01 AM EST | Winter Weather Advisory | BOX | 51 hr |
| Feb 12, 10:48 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 12, 3:35 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 15, 8:34 AM EST | Winter Weather Advisory | BOX | 3 hr |
| Feb 17, 3:48 AM EST | Winter Weather Advisory | BOX | 35 hr |
| Feb 19, 3:38 PM EST | Winter Weather Advisory | BOX | 39 hr |
| Feb 20, 10:15 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 23, 3:35 AM EST | Winter Weather Advisory | BOX | 30 hr |
| Feb 23, 3:37 AM EST | High Wind Watch | BOX | 25 hr |
| Feb 24, 4:07 AM EST | High Wind Warning | BOX | 39 hr |
| Feb 24, 10:06 AM EST | Winter Weather Advisory | BOX | 3 hr |
| Feb 25, 7:01 PM EST | Wind Advisory | BOX | 20 hr |
| Feb 26, 3:36 AM EST | Wind Chill Advisory | BOX | 23 hr |
| Feb 26, 3:34 PM EST | Winter Weather Advisory | BOX | 42 hr |
| Mar 1, 3:15 AM EST | Winter Weather Advisory | BOX | 34 hr |
| Mar 2, 4:09 AM EST | Winter Storm Watch | BOX | 23 hr |
| Mar 3, 3:18 AM EST | Winter Storm Warning | BOX | 31 hr |
| Mar 3, 10:44 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 9, 3:35 AM EST | Winter Weather Advisory | BOX | 36 hr |
| Apr 2, 2:54 PM EDT | Wind Advisory | BOX | 30 hr |
| Apr 3, 2:59 PM EDT | Fire Weather Watch | BOX | 13 hr |
| Apr 4, 4:12 AM EDT | Red Flag Warning | BOX | 15 hr |
| Apr 4, 3:31 PM EDT | Winter Weather Advisory | BOX | 37 hr |
| Apr 14, 3:00 AM EDT | Wind Advisory | BOX | 49 hr |
| Apr 14, 1:44 PM EDT | River Flood Watch | BOX | 22 hr |
| Apr 14, 1:44 PM EDT | River Flood Watch | BOX | 22 hr |
| Apr 15, 5:02 AM EDT | Severe Thunderstorm Warning | BOX | 37 min |
| Apr 15, 5:46 AM EDT | Areal Flood Advisory | BOX | 119 min |
| Apr 15, 11:34 AM EDT | River Flood Warning | BOX | 59 hr |
| Apr 15, 11:34 AM EDT | River Flood Warning | BOX | 65 hr |
| Apr 18, 4:11 PM EDT | Flood Watch | BOX | 46 hr |
| Apr 22, 5:37 PM EDT | Areal Flood Advisory | BOX | 113 min |
| Apr 22, 10:06 PM EDT | River Flood Warning | BOX | 38 hr |
| Apr 22, 10:06 PM EDT | River Flood Warning | BOX | 64 hr |
| Apr 26, 2:49 PM EDT | Tornado Warning | BOX | 26 min |
| Apr 26, 3:02 PM EDT | Special Weather Statement | BOX | 28 min |
| Apr 26, 3:14 PM EDT | Severe Thunderstorm Warning | BOX | 31 min |
| Apr 27, 6:11 PM EDT | River Flood Warning | BOX | 44 hr |
| May 20, 12:31 AM EDT | Special Weather Statement | BOX | 44 min |
| May 20, 12:56 AM EDT | Severe Thunderstorm Warning | BOX | 35 min |
| May 20, 1:26 AM EDT | Severe Thunderstorm Warning | BOX | 19 min |
| May 20, 1:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 20, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 20, 5:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 23, 10:49 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| May 23, 11:36 PM EDT | Special Weather Statement | BOX | 54 min |
| May 23, 11:44 PM EDT | Severe Thunderstorm Warning | BOX | 26 min |
| Jun 2, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 2:01 PM EDT | Special Weather Statement | BOX | 29 min |
| Jul 6, 3:39 AM EDT | Heat Advisory | BOX | 13 hr |
| Jul 6, 1:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 4:25 PM EDT | Special Weather Statement | BOX | 50 min |
| Jul 6, 4:30 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Jul 6, 5:05 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| Jul 6, 5:07 PM EDT | Flash Flood Warning | BOX | 113 min |
| Jul 6, 5:20 PM EDT | Flash Flood Warning | BOX | 115 min |
| Jul 17, 1:03 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 1:24 PM EDT | Flash Flood Watch | BOX | 7 hr |
| Jul 17, 1:58 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 17, 2:44 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Jul 17, 3:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 4:03 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Jul 17, 5:20 PM EDT | Flash Flood Warning | BOX | 115 min |
| Jul 18, 4:01 AM EDT | Excessive Heat Watch | BOX | 12 hr |
| Jul 18, 3:47 PM EDT | Excessive Heat Warning | BOX | 3 days |
| Jul 20, 9:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 20, 9:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 27, 1:18 PM EDT | Special Weather Statement | BOX | 42 min |
| Jul 27, 6:08 PM EDT | Special Weather Statement | BOX | 37 min |
| Jul 28, 4:00 PM EDT | Heat Advisory | BOX | 3 days |
| Jul 28, 4:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 31, 12:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 31, 1:02 PM EDT | Special Weather Statement | BOX | 43 min |
| Jul 31, 1:17 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 31, 1:22 PM EDT | Severe Thunderstorm Warning | BOX | 53 min |
| Jul 31, 2:02 PM EDT | Special Weather Statement | BOX | 43 min |
| Jul 31, 2:13 PM EDT | Severe Thunderstorm Warning | BOX | 62 min |
| Jul 31, 2:46 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Jul 31, 4:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Aug 3, 1:02 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 1:03 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Aug 3, 1:16 PM EDT | Special Weather Statement | BOX | 29 min |
| Aug 3, 1:33 PM EDT | Severe Thunderstorm Warning | BOX | 26 min |
| Aug 3, 1:56 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Aug 3, 3:35 PM EDT | Special Weather Statement | BOX | 25 min |
| Aug 3, 4:00 PM EDT | Special Weather Statement | BOX | 30 min |
| Aug 3, 4:18 PM EDT | Severe Thunderstorm Warning | BOX | 57 min |
| Aug 3, 4:39 PM EDT | Flash Flood Warning | BOX | 2 hr |
| Aug 3, 5:04 PM EDT | Special Weather Statement | BOX | 26 min |
| Aug 3, 5:10 PM EDT | Special Weather Statement | BOX | 35 min |
| Aug 7, 1:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 7, 1:53 PM EDT | Special Weather Statement | BOX | 52 min |
| Aug 7, 2:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 7, 2:26 PM EDT | Severe Thunderstorm Warning | BOX | 42 min |
| Aug 7, 3:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 7, 5:42 PM EDT | Special Weather Statement | BOX | 63 min |
| Aug 7, 6:00 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Aug 7, 6:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 7, 8:04 PM EDT | Areal Flood Warning | BOX | 2 hr |
| Aug 7, 8:04 PM EDT | Flash Flood Watch | BOX | 4 hr |
| Aug 8, 4:43 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 8, 6:08 PM EDT | Severe Thunderstorm Warning | BOX | 52 min |
| Aug 8, 6:30 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Aug 8, 7:20 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Aug 17, 6:22 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 17, 7:30 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Aug 17, 8:28 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Aug 18, 3:27 PM EDT | Heat Advisory | BOX | 26 hr |
| Aug 18, 6:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 7:24 PM EDT | Special Weather Statement | BOX | 36 min |
| Aug 18, 8:52 PM EDT | Special Weather Statement | BOX | 23 min |
| Aug 19, 1:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Aug 19, 1:57 PM EDT | Special Weather Statement | BOX | 33 min |
| Aug 19, 2:04 PM EDT | Severe Thunderstorm Warning | BOX | 56 min |
| Aug 19, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 19, 2:56 PM EDT | Severe Thunderstorm Warning | BOX | 64 min |
| Aug 21, 4:43 AM EDT | Special Weather Statement | BOX | 77 min |
| Aug 21, 11:31 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 21, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 21, 3:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 21, 6:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 21, 6:34 PM EDT | Severe Thunderstorm Warning | BOX | 56 min |
| Sep 2, 3:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 2, 7:11 PM EDT | Special Weather Statement | BOX | 64 min |
| Sep 4, 11:19 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 4, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 4, 3:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Sep 4, 4:17 PM EDT | Severe Thunderstorm Warning | BOX | 58 min |
| Sep 4, 4:53 PM EDT | Tornado Warning | BOX | 37 min |
| Sep 4, 5:13 PM EDT | Severe Thunderstorm Warning | BOX | 62 min |
| Sep 15, 6:09 AM EDT | Dense Fog Advisory | BOX | 3 hr |
| Sep 18, 3:50 AM EDT | Frost Advisory | BOX | 28 hr |
| Oct 4, 3:29 AM EDT | Frost Advisory | BOX | 28 hr |
| Oct 16, 4:23 AM EDT | Wind Advisory | BOX | 38 hr |
| Oct 16, 3:57 PM EDT | Flood Watch | BOX | 15 hr |
| Oct 30, 3:34 PM EDT | Wind Advisory | BOX | 47 hr |
| Oct 31, 4:08 AM EDT | High Wind Warning | BOX | 27 hr |
| Nov 1, 12:50 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Nov 17, 3:28 AM EST | Winter Weather Advisory | BOX | 51 hr |
| Nov 23, 3:32 PM EST | Winter Weather Advisory | BOX | 15 hr |
| Nov 29, 3:58 PM EST | Winter Storm Watch | BOX | 36 hr |
| Nov 30, 3:49 AM EST | Winter Storm Warning | BOX | 3 days |
| Nov 30, 3:42 PM EST | Winter Weather Advisory | BOX | 69 hr |
| Dec 1, 7:05 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 3, 8:59 AM EST | Winter Weather Advisory | BOX | 4 hr |
| Dec 13, 2:46 AM EST | Flood Watch | BOX | 31 hr |
| Dec 13, 10:28 AM EST | Winter Weather Advisory | BOX | 11 hr |
| Dec 14, 3:30 PM EST | Wind Advisory | BOX | 28 hr |
| Dec 16, 3:44 AM EST | Winter Weather Advisory | BOX | 41 hr |
| Dec 17, 11:06 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 18, 4:12 AM EST | Wind Chill Advisory | BOX | 29 hr |
| Dec 18, 2:19 PM EST | Special Weather Statement | BOX | 86 min |
| Dec 28, 3:41 AM EST | Winter Storm Watch | BOX | 24 hr |
| Dec 29, 4:01 AM EST | Ice Storm Warning | BOX | 48 hr |
| Dec 29, 4:01 AM EST | Winter Weather Advisory | BOX | 51 hr |
| Dec 30, 2:52 PM EST | Special Weather Statement | BOX | 38 min |
| Dec 30, 3:21 PM EST | Special Weather Statement | BOX | 54 min |
| Dec 30, 3:39 PM EST | Severe Thunderstorm Warning | BOX | 40 min |
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 archive20182020
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.