Alert archive / Massachusetts / Berkshire County
Weather alerts in Berkshire County, Massachusetts, 2020
181 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Berkshire County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 181
- Warnings
- 34
- Watches
- 23
- Advisories
- 36
- Busiest month
- July34 alerts
- Busiest day
- July 23, 202012 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 1 tornado warnings covering Berkshire County in 2020 had a tornado report inside them; 3 of 3 tornado reports fell inside a warning, on average 50 minutes after it went out.
Berkshire County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 3 | 100% | 50 min |
| Severe thunderstorm warnings | 20 | 13 | 35% | 33 | 91% | 20 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Albany, NY: tornado warnings | 20 | 6 | 70% | 17 | 65% | 21 min |
| NWS Albany, NY: severe thunderstorm warnings | 137 | 86 | 37% | 514 | 88% | 24 min |
| NWS Albany, NY: flash flood warnings | 7 | 3 | 57% | 22 | 95% | 43 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, 8:35 PM EST | Special Weather Statement | ALY | 55 min |
| Dec 31, 8:51 PM EST | Snow Squall Warning | ALY | 42 min |
| Jan 8, 12:57 PM EST | Special Weather Statement | ALY | 63 min |
| Jan 11, 1:24 PM EST | Wind Advisory | ALY | 26 hr |
| Jan 15, 3:44 AM EST | Winter Weather Advisory | ALY | 39 hr |
| Jan 15, 2:57 PM EST | Wind Advisory | ALY | 28 hr |
| Jan 16, 12:52 PM EST | Special Weather Statement | ALY | 38 min |
| Jan 16, 4:09 PM EST | Special Weather Statement | ALY | 51 min |
| Jan 17, 3:46 AM EST | Winter Storm Watch | ALY | 11 hr |
| Jan 17, 3:13 PM EST | Winter Storm Warning | ALY | 46 hr |
| Jan 24, 4:20 PM EST | Winter Weather Advisory | ALY | 32 hr |
| Feb 5, 3:24 AM EST | Winter Weather Advisory | ALY | 66 hr |
| Feb 6, 3:17 PM EST | Wind Advisory | ALY | 30 hr |
| Feb 9, 2:52 PM EST | Winter Weather Advisory | ALY | 21 hr |
| Feb 12, 4:40 AM EST | Winter Weather Advisory | ALY | 32 hr |
| Feb 13, 11:59 PM EST | Special Weather Statement | ALY | 61 min |
| Feb 25, 3:20 PM EST | High Wind Watch | ALY | 13 hr |
| Feb 26, 3:55 AM EST | Wind Advisory | ALY | 27 hr |
| Feb 27, 3:35 AM EST | Wind Advisory | ALY | 20 hr |
| Mar 3, 10:49 PM EST | Special Weather Statement | ALY | 56 min |
| Mar 13, 2:43 PM EDT | Special Weather Statement | ALY | 62 min |
| Mar 22, 3:28 AM EDT | Winter Storm Watch | ALY | 11 hr |
| Mar 22, 2:14 PM EDT | Winter Storm Warning | ALY | 35 hr |
| Mar 23, 3:26 PM EDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 29, 7:04 PM EDT | Special Weather Statement | ALY | 26 min |
| Mar 29, 8:16 PM EDT | Special Weather Statement | ALY | 29 min |
| Mar 29, 8:41 PM EDT | Severe Thunderstorm Warning | ALY | 19 min |
| Apr 9, 3:44 AM EDT | Wind Advisory | ALY | 36 hr |
| Apr 9, 12:44 PM EDT | Special Weather Statement | ALY | 61 min |
| Apr 11, 3:29 PM EDT | High Wind Watch | ALY | 24 hr |
| Apr 12, 3:32 PM EDT | High Wind Warning | ALY | 27 hr |
| Apr 13, 2:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 17, 3:53 AM EDT | Winter Weather Advisory | ALY | 30 hr |
| Apr 17, 6:32 PM EDT | Winter Storm Warning | ALY | 10 hr |
| Apr 21, 2:08 PM EDT | Special Weather Statement | ALY | 52 min |
| Apr 22, 7:46 AM EDT | Special Weather Statement | ALY | 29 min |
| Apr 22, 8:28 AM EDT | Special Weather Statement | ALY | 47 min |
| Apr 30, 2:31 PM EDT | Wind Advisory | ALY | 9 hr |
| May 9, 3:48 AM EDT | Wind Advisory | ALY | 16 hr |
| May 10, 2:59 PM EDT | Freeze Watch | ALY | 24 hr |
| May 11, 5:47 PM EDT | Special Weather Statement | ALY | 28 min |
| May 11, 6:02 PM EDT | Special Weather Statement | ALY | 28 min |
| May 12, 10:20 AM EDT | Freeze Warning | ALY | 22 hr |
| May 13, 12:53 PM EDT | Freeze Warning | ALY | 19 hr |
| May 15, 2:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 15, 3:32 PM EDT | Tornado Watch | SPC | 6 hr |
| May 15, 4:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 15, 6:47 PM EDT | Severe Thunderstorm Warning | ALY | 43 min |
| May 15, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 7:13 PM EDT | Severe Thunderstorm Warning | ALY | 47 min |
| May 15, 7:29 PM EDT | Severe Thunderstorm Warning | ALY | 16 min |
| May 29, 8:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 30, 7:21 PM EDT | Special Weather Statement | ALY | 39 min |
| Jun 6, 10:46 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 6, 12:20 PM EDT | Special Weather Statement | ALY | 25 min |
| Jun 6, 12:45 PM EDT | Special Weather Statement | ALY | 30 min |
| Jun 6, 12:49 PM EDT | Special Weather Statement | ALY | 26 min |
| Jun 11, 2:42 AM EDT | Special Weather Statement | ALY | 48 min |
| Jun 24, 4:38 AM EDT | Special Weather Statement | ALY | 67 min |
| Jun 28, 12:30 PM EDT | Special Weather Statement | ALY | 45 min |
| Jun 28, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 28, 1:13 PM EDT | Special Weather Statement | ALY | 32 min |
| Jun 28, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 1:45 PM EDT | Special Weather Statement | ALY | 45 min |
| Jun 28, 1:53 PM EDT | Special Weather Statement | ALY | 52 min |
| Jun 28, 4:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 4:11 PM EDT | Special Weather Statement | ALY | 34 min |
| Jun 28, 5:10 PM EDT | Special Weather Statement | ALY | 50 min |
| Jun 29, 2:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 29, 3:19 PM EDT | Special Weather Statement | ALY | 26 min |
| Jun 29, 3:25 PM EDT | Special Weather Statement | ALY | 35 min |
| Jun 29, 3:48 PM EDT | Special Weather Statement | ALY | 27 min |
| Jun 29, 3:50 PM EDT | Special Weather Statement | ALY | 25 min |
| Jun 29, 5:57 PM EDT | Special Weather Statement | ALY | 33 min |
| Jun 29, 6:58 PM EDT | Special Weather Statement | ALY | 32 min |
| Jul 1, 3:59 PM EDT | Special Weather Statement | ALY | 31 min |
| Jul 1, 4:24 PM EDT | Areal Flood Advisory | ALY | 95 min |
| Jul 1, 4:46 PM EDT | Special Weather Statement | ALY | 44 min |
| Jul 1, 5:06 PM EDT | Areal Flood Advisory | ALY | 80 min |
| Jul 2, 5:48 PM EDT | Severe Thunderstorm Warning | ALY | 57 min |
| Jul 2, 6:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 4:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 9, 3:58 PM EDT | Flash Flood Watch | ALY | 36 hr |
| Jul 11, 4:59 PM EDT | Special Weather Statement | ALY | 31 min |
| Jul 13, 7:55 PM EDT | Special Weather Statement | ALY | 50 min |
| Jul 13, 8:30 PM EDT | Severe Thunderstorm Warning | ALY | 30 min |
| Jul 18, 3:51 AM EDT | Heat Advisory | ALY | 63 hr |
| Jul 22, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 6:45 PM EDT | Special Weather Statement | ALY | 30 min |
| Jul 22, 7:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 23, 12:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 23, 1:21 PM EDT | Special Weather Statement | ALY | 24 min |
| Jul 23, 1:56 PM EDT | Special Weather Statement | ALY | 34 min |
| Jul 23, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 2:56 PM EDT | Severe Thunderstorm Warning | ALY | 64 min |
| Jul 23, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 4:40 PM EDT | Special Weather Statement | ALY | 35 min |
| Jul 23, 5:08 PM EDT | Severe Thunderstorm Warning | ALY | 67 min |
| Jul 23, 5:50 PM EDT | Special Weather Statement | ALY | 25 min |
| Jul 23, 6:31 PM EDT | Severe Thunderstorm Warning | ALY | 59 min |
| Jul 23, 6:37 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Jul 23, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 26, 2:59 PM EDT | Heat Advisory | ALY | 29 hr |
| Jul 30, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 30, 3:31 PM EDT | Special Weather Statement | ALY | 29 min |
| Jul 30, 3:59 PM EDT | Special Weather Statement | ALY | 31 min |
| Jul 30, 5:28 PM EDT | Special Weather Statement | ALY | 32 min |
| Jul 30, 6:00 PM EDT | Special Weather Statement | ALY | 30 min |
| Aug 2, 2:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 3:10 PM EDT | Tornado Watch | SPC | 7 hr |
| Aug 2, 6:09 PM EDT | Tornado Warning | ALY | 51 min |
| Aug 2, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 3:26 AM EDT | Flash Flood Watch | ALY | 42 hr |
| Aug 3, 5:36 AM EDT | Tropical Storm Watch | ALY | 6 hr |
| Aug 3, 11:30 AM EDT | Tropical Storm Warning | ALY | 36 hr |
| Aug 4, 8:37 AM EDT | Special Weather Statement | BOX | 23 min |
| Aug 4, 12:43 PM EDT | Tornado Watch | SPC | 6 hr |
| Aug 4, 3:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 10, 5:07 PM EDT | Severe Thunderstorm Warning | ALY | 53 min |
| Aug 11, 11:56 PM EDT | Areal Flood Advisory | ALY | 75 min |
| Aug 17, 7:08 PM EDT | Special Weather Statement | ALY | 67 min |
| Aug 22, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 22, 1:39 PM EDT | Severe Thunderstorm Warning | ALY | 51 min |
| Aug 23, 2:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 23, 5:35 PM EDT | Special Weather Statement | ALY | 40 min |
| Aug 24, 2:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 24, 8:47 PM EDT | Severe Thunderstorm Warning | ALY | 33 min |
| Aug 25, 2:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 25, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 27, 1:22 PM EDT | Tornado Watch | SPC | 7 hr |
| Aug 29, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 29, 2:59 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 29, 6:32 PM EDT | Severe Thunderstorm Warning | ALY | 58 min |
| Aug 29, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 7:13 PM EDT | Severe Thunderstorm Warning | ALY | 47 min |
| Aug 29, 7:40 PM EDT | Severe Thunderstorm Warning | ALY | 65 min |
| Aug 29, 7:57 PM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Aug 29, 8:36 PM EDT | Special Weather Statement | ALY | 24 min |
| Sep 3, 1:00 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 3, 1:40 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 18, 3:34 AM EDT | Frost Advisory | ALY | 28 hr |
| Sep 19, 3:11 PM EDT | Freeze Warning | ALY | 17 hr |
| Sep 21, 2:35 PM EDT | Fire Weather Watch | ALY | 13 hr |
| Sep 22, 3:31 AM EDT | Red Flag Warning | ALY | 17 hr |
| Sep 30, 3:21 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 30, 4:07 AM EDT | Special Weather Statement | ALY | 53 min |
| Sep 30, 4:55 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 30, 4:58 AM EDT | Special Weather Statement | ALY | 32 min |
| Sep 30, 6:16 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Oct 6, 3:18 PM EDT | Wind Advisory | ALY | 31 hr |
| Oct 7, 3:21 PM EDT | Severe Thunderstorm Warning | ALY | 39 min |
| Oct 7, 3:56 PM EDT | Severe Thunderstorm Warning | ALY | 34 min |
| Oct 7, 4:27 PM EDT | Severe Thunderstorm Warning | ALY | 33 min |
| Oct 7, 4:57 PM EDT | Severe Thunderstorm Warning | ALY | 33 min |
| Oct 29, 4:59 AM EDT | Winter Weather Advisory | ALY | 31 hr |
| Nov 1, 3:18 AM EST | Winter Weather Advisory | ALY | 51 hr |
| Nov 1, 4:05 PM EST | Wind Advisory | ALY | 27 hr |
| Nov 1, 6:16 PM EST | Special Weather Statement | ALY | 29 min |
| Nov 1, 6:45 PM EST | Special Weather Statement | ALY | 30 min |
| Nov 3, 5:55 AM EST | Special Weather Statement | ALY | 65 min |
| Nov 15, 3:33 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 15, 7:32 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 15, 8:54 PM EST | Special Weather Statement | ALY | 66 min |
| Nov 15, 9:37 PM EST | Mesoscale Discussion | SPC | 113 min |
| Nov 29, 2:52 PM EST | Wind Advisory | ALY | 31 hr |
| Nov 30, 6:28 PM EST | Special Weather Statement | ALY | 47 min |
| Dec 3, 3:39 PM EST | Winter Storm Watch | ALY | 24 hr |
| Dec 4, 3:29 PM EST | Winter Weather Advisory | ALY | 28 hr |
| Dec 14, 3:40 PM EST | Winter Storm Watch | ALY | 24 hr |
| Dec 15, 3:54 PM EST | Winter Storm Warning | ALY | 45 hr |
| Dec 16, 6:48 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 16, 10:12 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 22, 3:06 PM EST | Flood Watch | ALY | 3 days |
| Dec 23, 3:35 AM EST | High Wind Watch | ALY | 12 hr |
| Dec 23, 3:18 PM EST | High Wind Warning | ALY | 43 hr |
| Dec 24, 1:03 PM EST | River Flood Warning | ALY | 38 hr |
| Dec 25, 5:51 AM EST | Areal Flood Advisory | ALY | 4 hr |
| Dec 25, 7:18 AM EST | Areal Flood Advisory | ALY | 5 hr |
| Dec 25, 9:21 AM EST | Areal Flood Advisory | ALY | 4 hr |
| Dec 30, 3:24 AM EST | Winter Weather Advisory | ALY | 24 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 archive20192021
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.