Alert archive / Rhode Island / Bristol County
Weather alerts in Bristol County, Rhode Island, 2018
129 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Bristol County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 129
- Warnings
- 15
- Watches
- 25
- Advisories
- 61
- Busiest month
- March23 alerts
- Busiest day
- August 4, 20185 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Bristol County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 0 | 0 | ||||
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Boston/Norton, MA: tornado warnings | 16 | 4 | 75% | 12 | 42% | 11 min |
| NWS Boston/Norton, MA: severe thunderstorm warnings | 91 | 44 | 52% | 233 | 59% | 24 min |
| NWS Boston/Norton, MA: flash flood warnings | 36 | 10 | 72% | 114 | 94% | 68 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 2, 3:09 AM EST | Winter Storm Watch | BOX | 25 hr |
| Jan 2, 3:50 PM EST | High Wind Watch | BOX | 12 hr |
| Jan 3, 3:50 AM EST | Blizzard Warning | BOX | 39 hr |
| Jan 3, 3:50 AM EST | Winter Storm Warning | BOX | 39 hr |
| Jan 4, 3:46 AM EST | Wind Chill Watch | BOX | 24 hr |
| Jan 4, 6:06 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 4, 7:14 PM EST | Wind Advisory | BOX | 5 hr |
| Jan 5, 4:02 AM EST | Wind Chill Advisory | BOX | 54 hr |
| Jan 5, 8:22 AM EST | Wind Advisory | BOX | 14 hr |
| Jan 10, 3:17 PM EST | Flood Watch | BOX | 70 hr |
| Jan 12, 3:35 AM EST | Winter Weather Advisory | BOX | 33 hr |
| Jan 12, 7:30 PM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 13, 1:06 AM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 16, 3:56 AM EST | Winter Weather Advisory | BOX | 35 hr |
| Jan 17, 4:47 PM EST | Special Weather Statement | BOX | 88 min |
| Jan 22, 1:11 PM EST | Dense Fog Advisory | BOX | 22 hr |
| Jan 22, 2:08 PM EST | Wind Advisory | BOX | 28 hr |
| Jan 28, 4:02 PM EST | Winter Weather Advisory | BOX | 45 hr |
| Feb 10, 2:15 PM EST | Flood Watch | BOX | 32 hr |
| Feb 14, 5:46 AM EST | Winter Weather Advisory | BOX | 3 hr |
| Feb 16, 3:30 AM EST | Winter Storm Watch | BOX | 34 hr |
| Feb 17, 3:30 AM EST | Winter Storm Warning | BOX | 27 hr |
| Feb 28, 3:27 PM EST | Flood Watch | BOX | 57 hr |
| Feb 28, 3:28 PM EST | High Wind Watch | BOX | 24 hr |
| Mar 1, 3:27 AM EST | High Wind Warning | BOX | 52 hr |
| Mar 1, 11:37 AM EST | Coastal Flood Advisory | BOX | 41 hr |
| Mar 1, 3:38 PM EST | Wind Advisory | BOX | 60 hr |
| Mar 2, 4:06 AM EST | Winter Weather Advisory | BOX | 18 hr |
| Mar 2, 1:27 PM EST | Areal Flood Warning | BOX | 12 hr |
| Mar 4, 4:10 AM EST | Coastal Flood Advisory | BOX | 11 hr |
| Mar 4, 8:35 PM EST | Coastal Flood Statement | BOX | 3 hr |
| Mar 5, 3:42 AM EST | Coastal Flood Statement | BOX | 8 hr |
| Mar 6, 12:22 PM EST | Flood Watch | BOX | 25 hr |
| Mar 6, 2:33 PM EST | Wind Advisory | BOX | 37 hr |
| Mar 7, 1:25 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 9, 8:26 AM EST | Special Weather Statement | BOX | 3 hr |
| Mar 11, 3:51 AM EDT | Winter Storm Watch | BOX | 24 hr |
| Mar 12, 3:46 AM EDT | Winter Storm Warning | BOX | 46 hr |
| Mar 13, 5:47 AM EDT | Special Weather Statement | BOX | 58 min |
| Mar 13, 6:48 AM EDT | Special Weather Statement | BOX | 87 min |
| Mar 13, 7:08 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 19, 3:27 PM EDT | Winter Storm Watch | BOX | 36 hr |
| Mar 20, 4:02 AM EDT | Winter Storm Warning | BOX | 42 hr |
| Mar 20, 2:48 PM EDT | Winter Weather Advisory | BOX | 38 hr |
| Mar 20, 2:53 PM EDT | Wind Advisory | BOX | 43 hr |
| Mar 21, 8:57 PM EDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 30, 2:07 AM EDT | Dense Fog Advisory | BOX | 8 hr |
| Apr 1, 3:59 PM EDT | Winter Weather Advisory | BOX | 20 hr |
| Apr 3, 3:00 PM EDT | Wind Advisory | BOX | 37 hr |
| Apr 3, 7:10 PM EDT | Dense Fog Advisory | BOX | 21 hr |
| Apr 11, 2:23 AM EDT | Dense Fog Advisory | BOX | 6 hr |
| Apr 16, 9:51 AM EDT | Wind Advisory | BOX | 10 hr |
| Apr 16, 3:42 PM EDT | Coastal Flood Advisory | BOX | 7 hr |
| Apr 16, 5:14 PM EDT | Special Weather Statement | BOX | 46 min |
| May 8, 3:36 PM EDT | Dense Fog Advisory | BOX | 18 hr |
| May 15, 1:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 15, 2:26 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 15, 5:31 PM EDT | Special Weather Statement | BOX | 59 min |
| May 15, 6:14 PM EDT | Special Weather Statement | BOX | 61 min |
| May 19, 7:27 PM EDT | Dense Fog Advisory | BOX | 7 hr |
| May 29, 9:38 PM EDT | Dense Fog Advisory | BOX | 8 hr |
| Jun 1, 6:24 AM EDT | Dense Fog Advisory | BOX | 3 hr |
| Jun 1, 3:03 PM EDT | Dense Fog Advisory | BOX | 19 hr |
| Jun 30, 4:16 PM EDT | Heat Advisory | BOX | 28 hr |
| Jul 1, 3:30 PM EDT | Heat Advisory | BOX | 4 days |
| Jul 5, 3:30 PM EDT | Flash Flood Watch | BOX | 24 hr |
| Jul 6, 12:02 PM EDT | Special Weather Statement | BOX | 88 min |
| Jul 15, 4:13 PM EDT | Areal Flood Advisory | BOX | 62 min |
| Jul 17, 2:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 25, 9:39 AM EDT | Flash Flood Watch | BOX | 18 hr |
| Jul 26, 5:32 PM EDT | Special Weather Statement | BOX | 88 min |
| Jul 28, 9:42 PM EDT | Special Weather Statement | BOX | 48 min |
| Aug 3, 2:41 PM EDT | Flash Flood Watch | BOX | 25 hr |
| Aug 4, 9:53 AM EDT | Mesoscale Discussion | SPC | 37 min |
| Aug 4, 10:00 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 4, 11:14 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Aug 4, 11:31 AM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 4, 12:08 PM EDT | Flash Flood Warning | BOX | 3 hr |
| Aug 5, 2:58 PM EDT | Heat Advisory | BOX | 53 hr |
| Aug 8, 3:29 AM EDT | Heat Advisory | BOX | 15 hr |
| Aug 9, 3:25 AM EDT | Heat Advisory | BOX | 14 hr |
| Aug 10, 3:20 PM EDT | Flash Flood Watch | BOX | 48 hr |
| Aug 12, 10:55 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 18, 12:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 4:25 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Aug 25, 4:21 AM EDT | Dense Fog Advisory | BOX | 3 hr |
| Aug 27, 2:51 AM EDT | Heat Advisory | BOX | 66 hr |
| Sep 2, 2:54 PM EDT | Heat Advisory | BOX | 48 hr |
| Sep 5, 2:55 PM EDT | Heat Advisory | BOX | 27 hr |
| Sep 6, 5:08 PM EDT | Special Weather Statement | BOX | 52 min |
| Sep 11, 9:04 PM EDT | Dense Fog Advisory | BOX | 12 hr |
| Sep 12, 3:10 PM EDT | Flash Flood Watch | BOX | 16 hr |
| Sep 13, 4:28 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Sep 18, 1:31 PM EDT | Flash Flood Warning | BOX | 4 hr |
| Sep 18, 2:07 PM EDT | Special Weather Statement | BOX | 38 min |
| Sep 25, 5:45 PM EDT | Areal Flood Advisory | BOX | 60 min |
| Sep 25, 9:25 PM EDT | Areal Flood Advisory | BOX | 2 hr |
| Sep 26, 1:44 AM EDT | Areal Flood Advisory | BOX | 2 hr |
| Sep 27, 12:16 AM EDT | Special Weather Statement | BOX | 44 min |
| Sep 27, 12:59 AM EDT | Special Weather Statement | BOX | 31 min |
| Sep 27, 3:30 PM EDT | Flash Flood Watch | BOX | 21 hr |
| Oct 10, 2:42 PM EDT | Flash Flood Watch | BOX | 47 hr |
| Oct 11, 3:14 PM EDT | Wind Advisory | BOX | 26 hr |
| Oct 12, 5:06 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Oct 15, 8:44 PM EDT | Wind Advisory | BOX | 9 hr |
| Oct 17, 2:51 AM EDT | Wind Advisory | BOX | 31 hr |
| Oct 18, 3:42 AM EDT | Frost Advisory | BOX | 29 hr |
| Oct 18, 3:42 AM EDT | Freeze Warning | BOX | 29 hr |
| Oct 20, 4:12 PM EDT | Freeze Watch | BOX | 24 hr |
| Oct 21, 2:15 AM EDT | Freeze Warning | BOX | 31 hr |
| Oct 23, 3:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Oct 26, 2:30 PM EDT | Flash Flood Watch | BOX | 28 hr |
| Oct 26, 3:28 PM EDT | Wind Advisory | BOX | 31 hr |
| Oct 29, 8:39 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Nov 2, 4:35 AM EDT | High Wind Watch | BOX | 10 hr |
| Nov 2, 2:40 PM EDT | Wind Advisory | BOX | 28 hr |
| Nov 3, 5:59 AM EDT | Areal Flood Advisory | BOX | 3 hr |
| Nov 8, 3:20 PM EST | Flood Watch | BOX | 36 hr |
| Nov 9, 3:32 PM EST | Wind Advisory | BOX | 27 hr |
| Nov 12, 10:23 PM EST | Flood Watch | BOX | 14 hr |
| Nov 14, 3:31 PM EST | Winter Weather Advisory | BOX | 34 hr |
| Nov 15, 4:39 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 21, 5:14 PM EST | Special Weather Statement | BOX | 61 min |
| Nov 26, 3:16 AM EST | Dense Fog Advisory | BOX | 7 hr |
| Dec 19, 3:18 PM EST | Flood Watch | BOX | 58 hr |
| Dec 20, 3:16 PM EST | High Wind Warning | BOX | 28 hr |
| Dec 20, 3:16 PM EST | Wind Advisory | BOX | 31 hr |
| Dec 20, 3:22 PM EST | Coastal Flood Advisory | BOX | 30 hr |
| Dec 21, 10:19 PM EST | Coastal Flood Advisory | BOX | 15 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 15 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 8 |
| Flood Watch | 7 |
| Areal Flood Advisory | 11 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 3 |
| Wind Advisory | 15 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
| Coast and beach | |
| Coastal Flood Advisory | 5 |
| Coastal Flood Statement | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.