Alert archive / Massachusetts / Suffolk County
Weather alerts in Suffolk County, Massachusetts, 2010
174 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Suffolk County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 174
- Warnings
- 46
- Watches
- 35
- Advisories
- 50
- Busiest month
- June36 alerts
- Busiest day
- June 1, 20107 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Suffolk County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 8 | 27% | 13 | 92% | 20 min |
| Flash flood warnings | 1 | 1 | 0% | 3 | 67% | 26 min |
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, 3:26 PM EST | Coastal Flood Advisory | BOX | 23 hr |
| Jan 1, 4:35 PM EST | Winter Weather Advisory | BOX | 44 hr |
| Jan 2, 3:57 AM EST | Coastal Flood Watch | BOX | 24 hr |
| Jan 2, 4:19 AM EST | Wind Advisory | BOX | 32 hr |
| Jan 2, 9:46 AM EST | Coastal Flood Warning | BOX | 4 hr |
| Jan 2, 9:42 PM EST | Coastal Flood Advisory | BOX | 4 hr |
| Jan 3, 3:55 AM EST | Coastal Flood Advisory | BOX | 10 hr |
| Jan 16, 4:39 AM EST | Winter Storm Watch | BOX | 36 hr |
| Jan 17, 4:20 PM EST | Winter Weather Advisory | BOX | 21 hr |
| Jan 18, 2:58 AM EST | Wind Advisory | BOX | 10 hr |
| Jan 18, 4:44 AM EST | Coastal Flood Advisory | BOX | 11 hr |
| Jan 23, 4:22 PM EST | Flash Flood Watch | BOX | 50 hr |
| Jan 24, 4:20 AM EST | High Wind Watch | BOX | 24 hr |
| Jan 25, 4:08 AM EST | Wind Advisory | BOX | 14 hr |
| Jan 25, 2:47 PM EST | Areal Flood Advisory | BOX | 4 hr |
| Jan 28, 1:45 PM EST | Wind Advisory | BOX | 29 hr |
| Feb 8, 3:28 PM EST | Winter Storm Watch | BOX | 37 hr |
| Feb 9, 3:52 PM EST | Winter Storm Warning | BOX | 33 hr |
| Feb 10, 4:25 AM EST | Winter Weather Advisory | BOX | 20 hr |
| Feb 10, 12:20 PM EST | Mesoscale Discussion | SPC | 4 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 16, 3:01 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Feb 24, 3:32 PM EST | Flood Watch | BOX | 36 hr |
| Feb 24, 3:40 PM EST | High Wind Watch | BOX | 13 hr |
| Feb 25, 4:18 AM EST | Coastal Flood Watch | BOX | 7 hr |
| Feb 25, 4:34 AM EST | High Wind Warning | BOX | 21 hr |
| Feb 25, 11:18 AM EST | Coastal Flood Watch | BOX | 6 hr |
| Feb 25, 11:18 AM EST | Coastal Flood Advisory | BOX | 11 hr |
| Feb 25, 4:53 PM EST | Coastal Flood Warning | BOX | 18 hr |
| Feb 25, 4:56 PM EST | Areal Flood Warning | BOX | 11 hr |
| Feb 26, 3:53 PM EST | Coastal Flood Statement | BOX | 19 hr |
| Feb 28, 2:49 PM EST | Coastal Flood Watch | BOX | 13 hr |
| Feb 28, 4:02 PM EST | Winter Weather Advisory | BOX | 16 hr |
| Mar 1, 3:47 AM EST | Coastal Flood Advisory | BOX | 10 hr |
| Mar 2, 4:34 PM EST | Coastal Flood Watch | BOX | 23 hr |
| Mar 3, 3:35 PM EST | Coastal Flood Warning | BOX | 12 hr |
| Mar 4, 10:42 AM EST | Coastal Flood Advisory | BOX | 5 hr |
| Mar 12, 4:29 PM EST | Flood Watch | BOX | 69 hr |
| Mar 12, 4:35 PM EST | High Wind Watch | BOX | 24 hr |
| Mar 13, 4:02 AM EST | High Wind Warning | BOX | 32 hr |
| Mar 13, 5:17 AM EST | Coastal Flood Watch | BOX | 33 hr |
| Mar 13, 4:06 PM EST | Coastal Flood Warning | BOX | 22 hr |
| Mar 13, 8:47 PM EST | Areal Flood Advisory | BOX | 3 hr |
| Mar 13, 11:42 PM EST | Areal Flood Warning | BOX | 12 hr |
| Mar 14, 12:36 PM EDT | Areal Flood Warning | BOX | 26 hr |
| Mar 14, 12:55 PM EDT | River Flood Warning | BOX | 3 days |
| Mar 14, 3:37 PM EDT | Wind Advisory | BOX | 37 hr |
| Mar 14, 3:42 PM EDT | Coastal Flood Advisory | BOX | 34 hr |
| Mar 15, 2:57 AM EDT | Coastal Flood Warning | BOX | 11 hr |
| Mar 15, 1:59 PM EDT | Areal Flood Warning | BOX | 32 hr |
| Mar 16, 9:06 PM EDT | Areal Flood Warning | BOX | 24 hr |
| Mar 17, 8:56 PM EDT | Areal Flood Warning | BOX | 12 hr |
| Mar 18, 8:22 AM EDT | Areal Flood Warning | BOX | 11 hr |
| Mar 22, 3:13 AM EDT | Flood Watch | BOX | 47 hr |
| Mar 23, 9:33 AM EDT | Areal Flood Warning | BOX | 12 hr |
| Mar 23, 12:05 PM EDT | River Flood Warning | BOX | 17 hr |
| Mar 23, 9:47 PM EDT | Areal Flood Advisory | BOX | 4 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 29, 3:23 PM EDT | River Flood Warning | BOX | 3 days |
| Mar 29, 4:24 PM EDT | Coastal Flood Advisory | BOX | 22 hr |
| Mar 29, 4:30 PM EDT | Areal Flood Warning | BOX | 20 hr |
| Mar 30, 12:15 PM EDT | Areal Flood Warning | BOX | 34 hr |
| Mar 30, 3:45 PM EDT | Coastal Flood Advisory | BOX | 10 hr |
| Mar 31, 9:44 PM EDT | Areal Flood Warning | BOX | 20 hr |
| Apr 1, 4:54 PM EDT | Areal Flood Warning | BOX | 12 hr |
| Apr 2, 3:40 AM EDT | Areal Flood Warning | BOX | 8 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 27, 9:46 PM EDT | Coastal Flood Statement | BOX | 4 hr |
| Apr 29, 1:43 PM EDT | Wind Advisory | BOX | 5 hr |
| Apr 30, 7:46 AM EDT | Red Flag Warning | BOX | 10 hr |
| May 3, 3:07 PM EDT | Wind Advisory | BOX | 113 min |
| May 4, 1:24 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| 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 |
| Jun 1, 2:21 AM EDT | Special Weather Statement | BOX | 24 min |
| Jun 1, 2:52 AM EDT | Severe Thunderstorm Warning | BOX | 23 min |
| Jun 1, 3:54 AM EDT | Special Weather Statement | BOX | 51 min |
| Jun 1, 4:14 AM EDT | Special Weather Statement | BOX | 31 min |
| Jun 1, 11:46 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 1, 2:28 PM EDT | Special Weather Statement | BOX | 47 min |
| Jun 1, 3:06 PM EDT | Severe Thunderstorm Warning | BOX | 30 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 3, 5:05 PM EDT | Severe Thunderstorm Warning | BOX | 55 min |
| Jun 3, 6:14 PM EDT | Special Weather Statement | BOX | 61 min |
| Jun 3, 6:21 PM EDT | Severe Thunderstorm Warning | BOX | 24 min |
| Jun 3, 7:30 PM EDT | Mesoscale Discussion | SPC | 30 min |
| Jun 5, 2:41 AM EDT | Special Weather Statement | BOX | 49 min |
| Jun 5, 1:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 5, 7:30 PM EDT | Mesoscale Discussion | SPC | 60 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, 2:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 6, 3:43 PM EDT | Severe Thunderstorm Warning | BOX | 32 min |
| Jun 6, 4:05 PM EDT | Areal Flood Advisory | BOX | 85 min |
| Jun 6, 4:12 PM EDT | Severe Thunderstorm Warning | BOX | 33 min |
| Jun 20, 11:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 20, 12:36 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 20, 3:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 20, 4:42 PM EDT | Special Weather Statement | BOX | 33 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, 3:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 24, 5:01 PM EDT | Severe Thunderstorm Warning | BOX | 59 min |
| Jun 24, 6:20 PM EDT | Severe Thunderstorm Warning | BOX | 25 min |
| Jun 27, 3:07 PM EDT | Severe Thunderstorm Warning | BOX | 23 min |
| Jun 28, 4:57 AM EDT | Heat Advisory | BOX | 13 hr |
| 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 10, 2:37 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Jul 10, 3:04 PM EDT | Flash Flood Warning | BOX | 107 min |
| Jul 12, 12:55 PM EDT | Special Weather Statement | BOX | 65 min |
| Jul 13, 3:03 AM EDT | Flash Flood Watch | BOX | 39 hr |
| Jul 16, 7:30 PM EDT | Severe Thunderstorm Warning | BOX | 45 min |
| Jul 16, 7:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 19, 7:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 19, 9:49 PM EDT | Special Weather Statement | BOX | 56 min |
| Jul 21, 11:27 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 12:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 21, 3:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 21, 7:35 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 21, 9:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Aug 5, 3:27 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 5, 3:59 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 5, 4:06 PM EDT | Special Weather Statement | BOX | 39 min |
| Aug 5, 4:22 PM EDT | Special Weather Statement | BOX | 38 min |
| Aug 5, 4:44 PM EDT | Special Weather Statement | BOX | 46 min |
| Aug 5, 4:59 PM EDT | Special Weather Statement | BOX | 46 min |
| Aug 23, 4:18 PM EDT | High Surf Advisory | BOX | 50 hr |
| Aug 28, 5:00 PM EDT | Tropical Storm Watch | NHC | 6 days |
| Aug 29, 11:00 AM EDT | Tropical Storm Warning | NHC | 7 days |
| Sep 1, 5:12 PM EDT | Tropical Storm Watch | BOX | 31 hr |
| Sep 2, 11:59 AM EDT | Tropical Storm Warning | BOX | 41 hr |
| Sep 2, 8:50 PM EDT | Flash Flood Watch | BOX | 32 hr |
| Sep 13, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 29, 3:30 AM EDT | High Wind Watch | BOX | 37 hr |
| Sep 30, 4:47 AM EDT | Wind Advisory | BOX | 35 hr |
| Sep 30, 5:09 AM EDT | Flood Watch | BOX | 35 hr |
| Oct 1, 4:44 AM EDT | High Wind Warning | BOX | 10 hr |
| Oct 1, 9:07 AM EDT | Areal Flood Advisory | BOX | 4 hr |
| Oct 1, 10:56 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Oct 1, 12:33 PM EDT | Special Weather Statement | BOX | 42 min |
| Oct 1, 12:41 PM EDT | Areal Flood Advisory | BOX | 3 hr |
| Oct 5, 6:11 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Oct 5, 4:13 PM EDT | Coastal Flood Advisory | BOX | 20 hr |
| Oct 14, 4:14 PM EDT | Wind Advisory | BOX | 48 hr |
| Nov 5, 4:16 PM EDT | Coastal Flood Statement | BOX | 21 hr |
| Nov 6, 4:19 PM EDT | Coastal Flood Statement | BOX | 22 hr |
| Nov 7, 3:59 PM EST | Coastal Flood Statement | BOX | 14 hr |
| Nov 8, 5:05 AM EST | Wind Advisory | BOX | 8 hr |
| Nov 8, 5:47 AM EST | Coastal Flood Advisory | BOX | 8 hr |
| Nov 9, 4:13 AM EST | Coastal Flood Advisory | BOX | 11 hr |
| Nov 10, 3:54 AM EST | Coastal Flood Advisory | BOX | 12 hr |
| Nov 11, 4:40 AM EST | Coastal Flood Statement | BOX | 12 hr |
| Nov 17, 3:59 AM EST | Wind Advisory | BOX | 24 hr |
| Nov 23, 3:12 PM EST | Wind Advisory | BOX | 27 hr |
| Dec 11, 4:31 PM EST | Wind Advisory | BOX | 35 hr |
| Dec 12, 7:22 PM EST | Areal Flood Advisory | BOX | 8 hr |
| Dec 20, 10:05 AM EST | Winter Weather Advisory | BOX | 18 hr |
| Dec 25, 3:58 AM EST | Winter Storm Watch | BOX | 13 hr |
| Dec 25, 4:51 PM EST | Blizzard Warning | BOX | 43 hr |
| Dec 25, 5:10 PM EST | Coastal Flood Watch | BOX | 19 hr |
| Dec 25, 5:18 PM EST | High Wind Warning | BOX | 50 hr |
| Dec 26, 12:19 PM EST | Coastal Flood Warning | BOX | 20 hr |
| Dec 26, 12:31 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 7:54 AM EST | Coastal Flood Advisory | BOX | 10 hr |
| Dec 27, 7:35 PM EST | Wind Advisory | BOX | 20 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.