Alert archive / Massachusetts / Franklin County
Weather alerts in Franklin County, Massachusetts, 2010
152 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Franklin County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 152
- Warnings
- 43
- Watches
- 23
- Advisories
- 40
- Busiest month
- July29 alerts
- Busiest day
- July 21, 20109 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 Franklin County in 2010 had a tornado report inside them.
Franklin County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 29 | 25 | 14% | 40 | 80% | 20 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 6 | 1 | 83% | 1 | 100% | 5 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 137 | 99 | 28% | 426 | 77% | 22 min |
| NWS Boston/Norton, MA: flash flood warnings | 2 | 2 | 0% | 19 | 68% | 29 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 1, 4:35 PM EST | Winter Weather Advisory | BOX | 44 hr |
| Jan 2, 4:19 AM EST | Wind Advisory | BOX | 32 hr |
| Jan 16, 4:39 AM EST | Winter Storm Watch | BOX | 36 hr |
| Jan 17, 4:20 PM EST | Winter Storm Warning | BOX | 18 hr |
| Jan 23, 4:22 PM EST | Flash Flood Watch | BOX | 50 hr |
| Jan 24, 4:01 PM EST | Freezing Rain Advisory | BOX | 16 hr |
| Jan 25, 4:08 AM EST | Wind Advisory | BOX | 14 hr |
| Jan 25, 12:36 PM EST | Areal Flood Advisory | BOX | 4 hr |
| Jan 25, 1:42 PM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 28, 1:45 PM EST | Wind Advisory | BOX | 29 hr |
| Jan 28, 4:00 PM EST | Wind Chill Advisory | BOX | 18 hr |
| Jan 29, 3:51 PM EST | Wind Chill Advisory | BOX | 18 hr |
| Feb 8, 3:28 PM EST | Winter Storm Watch | BOX | 37 hr |
| Feb 10, 4:25 AM EST | Winter Weather Advisory | BOX | 20 hr |
| Feb 15, 4:31 AM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 15, 3:58 PM EST | Winter Weather Advisory | BOX | 33 hr |
| Feb 18, 9:01 PM EST | Wind Advisory | BOX | 8 hr |
| Feb 22, 3:08 PM EST | Winter Storm Watch | BOX | 24 hr |
| Feb 23, 4:13 AM EST | Winter Storm Warning | BOX | 35 hr |
| Feb 23, 2:03 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 24, 3:32 PM EST | Flood Watch | BOX | 36 hr |
| Feb 25, 4:34 AM EST | Wind Advisory | BOX | 21 hr |
| Feb 25, 4:20 PM EST | Winter Storm Warning | BOX | 12 hr |
| Feb 25, 4:20 PM EST | Winter Weather Advisory | BOX | 48 hr |
| Mar 12, 4:29 PM EST | Flood Watch | BOX | 69 hr |
| Mar 13, 3:55 AM EST | Winter Weather Advisory | BOX | 5 hr |
| Mar 13, 4:02 AM EST | Wind Advisory | BOX | 30 hr |
| Mar 13, 5:59 PM EST | Winter Weather Advisory | BOX | 8 hr |
| Mar 23, 9:36 AM EDT | Areal Flood Advisory | BOX | 12 hr |
| Mar 23, 12:05 PM EDT | River Flood Warning | BOX | 35 hr |
| Mar 27, 3:54 PM EDT | Flood Watch | BOX | 3 days |
| Mar 29, 11:49 AM EDT | Areal Flood Warning | BOX | 24 hr |
| Mar 30, 1:00 PM EDT | Areal Flood Advisory | BOX | 8 hr |
| Mar 30, 7:53 PM EDT | Areal Flood Advisory | BOX | 11 hr |
| Apr 6, 5:18 PM EDT | Fire Weather Watch | BOX | 11 hr |
| Apr 7, 4:11 AM EDT | Red Flag Warning | BOX | 14 hr |
| Apr 14, 10:17 AM EDT | Red Flag Warning | BOX | 8 hr |
| Apr 29, 1:43 PM EDT | Wind Advisory | BOX | 5 hr |
| May 4, 1:24 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 4, 3:21 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| May 4, 3:37 PM EDT | Severe Thunderstorm Warning | BOX | 38 min |
| May 4, 4:05 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| May 4, 4:29 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| May 4, 4:38 PM EDT | Severe Thunderstorm Warning | BOX | 52 min |
| May 4, 4:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 8, 3:29 AM EDT | Wind Advisory | BOX | 37 hr |
| May 9, 3:51 AM EDT | Freeze Warning | BOX | 24 hr |
| May 10, 3:49 AM EDT | Freeze Warning | BOX | 28 hr |
| May 12, 3:23 PM EDT | Frost Advisory | BOX | 16 hr |
| May 16, 3:40 PM EDT | Frost Advisory | BOX | 14 hr |
| May 26, 3:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 26, 7:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 26, 9:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 26, 10:23 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 26, 10:52 PM EDT | Special Weather Statement | BOX | 53 min |
| May 26, 11:14 PM EDT | Severe Thunderstorm Warning | BOX | 36 min |
| May 26, 11:27 PM EDT | Severe Thunderstorm Warning | BOX | 23 min |
| May 26, 11:39 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| May 27, 12:07 AM EDT | Mesoscale Discussion | SPC | 53 min |
| May 29, 3:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 29, 4:09 PM EDT | Severe Thunderstorm Warning | BOX | 36 min |
| May 29, 5:08 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Jun 1, 1:15 PM EDT | Special Weather Statement | BOX | 60 min |
| Jun 3, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 3, 3:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 5, 12:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 5, 1:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 5, 2:35 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Jun 5, 3:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 6, 10:25 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 6, 11:08 AM EDT | Tornado Watch | SPC | 8 hr |
| Jun 6, 1:00 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Jun 6, 2:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 6, 3:49 PM EDT | Special Weather Statement | BOX | 41 min |
| Jun 10, 2:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 10, 5:09 PM EDT | Special Weather Statement | BOX | 36 min |
| Jun 20, 5:41 AM EDT | Special Weather Statement | BOX | 49 min |
| Jun 20, 11:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 24, 12:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 24, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 24, 2:47 PM EDT | Severe Thunderstorm Warning | BOX | 21 min |
| Jun 24, 3:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 24, 3:35 PM EDT | Severe Thunderstorm Warning | BOX | 40 min |
| Jun 24, 4:03 PM EDT | Severe Thunderstorm Warning | BOX | 42 min |
| Jun 28, 12:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 28, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 3:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 3:53 PM EDT | Heat Advisory | BOX | 27 hr |
| Jul 6, 4:00 PM EDT | Heat Advisory | BOX | 27 hr |
| Jul 10, 10:20 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Jul 16, 1:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 16, 5:49 PM EDT | Special Weather Statement | BOX | 26 min |
| Jul 16, 6:28 PM EDT | Severe Thunderstorm Warning | BOX | 35 min |
| Jul 16, 7:02 PM EDT | Severe Thunderstorm Warning | BOX | 32 min |
| Jul 16, 7:30 PM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Jul 17, 6:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 17, 9:21 PM EDT | Severe Thunderstorm Warning | BOX | 39 min |
| Jul 17, 9:58 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Jul 17, 10:36 PM EDT | Special Weather Statement | BOX | 39 min |
| Jul 17, 11:25 PM EDT | Special Weather Statement | BOX | 50 min |
| Jul 17, 11:51 PM EDT | Severe Thunderstorm Warning | BOX | 24 min |
| Jul 18, 12:13 AM EDT | Areal Flood Advisory | BOX | 50 min |
| Jul 19, 1:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 19, 6:35 PM EDT | Special Weather Statement | BOX | 25 min |
| Jul 19, 8:26 PM EDT | Severe Thunderstorm Warning | BOX | 19 min |
| Jul 21, 10:43 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 11:27 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 1:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 21, 2:27 PM EDT | Severe Thunderstorm Warning | BOX | 63 min |
| Jul 21, 3:28 PM EDT | Severe Thunderstorm Warning | BOX | 47 min |
| Jul 21, 3:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 21, 4:13 PM EDT | Severe Thunderstorm Warning | BOX | 62 min |
| Jul 21, 4:25 PM EDT | Tornado Warning | BOX | 42 min |
| Jul 21, 7:35 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 21, 9:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 21, 10:31 PM EDT | Severe Thunderstorm Warning | BOX | 44 min |
| Aug 5, 11:40 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 9, 5:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 16, 12:05 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 16, 2:12 PM EDT | Severe Thunderstorm Warning | BOX | 48 min |
| Aug 16, 2:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 16, 7:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Aug 16, 7:29 PM EDT | Special Weather Statement | BOX | 61 min |
| Sep 13, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 13, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 13, 4:34 PM EDT | Severe Thunderstorm Warning | BOX | 41 min |
| Sep 13, 5:14 PM EDT | Severe Thunderstorm Warning | BOX | 46 min |
| Sep 13, 6:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Sep 20, 4:42 AM EDT | Frost Advisory | BOX | 26 hr |
| Sep 29, 3:30 AM EDT | High Wind Watch | BOX | 37 hr |
| Sep 30, 5:09 AM EDT | Flood Watch | BOX | 35 hr |
| Oct 1, 7:41 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Oct 1, 11:31 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Oct 9, 4:08 AM EDT | Freeze Warning | BOX | 24 hr |
| Oct 10, 3:55 AM EDT | Freeze Warning | BOX | 4 hr |
| Oct 14, 4:14 PM EDT | Wind Advisory | BOX | 48 hr |
| Oct 16, 4:13 AM EDT | Wind Advisory | BOX | 12 hr |
| Nov 7, 7:28 PM EST | Winter Weather Advisory | BOX | 14 hr |
| Nov 8, 4:51 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 8, 5:05 AM EST | Wind Advisory | BOX | 8 hr |
| Nov 17, 3:59 AM EST | Wind Advisory | BOX | 24 hr |
| Nov 23, 3:12 PM EST | Wind Advisory | BOX | 27 hr |
| Nov 25, 3:43 PM EST | Winter Weather Advisory | BOX | 17 hr |
| Dec 11, 4:26 PM EST | Winter Weather Advisory | BOX | 19 hr |
| Dec 12, 6:28 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 12, 7:22 PM EST | Areal Flood Advisory | BOX | 8 hr |
| Dec 25, 3:58 AM EST | Winter Storm Watch | BOX | 13 hr |
| Dec 25, 4:51 PM EST | Winter Storm Warning | BOX | 43 hr |
| Dec 26, 12:31 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 6:26 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 12:24 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 11:55 AM EST | Winter Weather Advisory | BOX | 16 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 archive20092011
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.