Alert archive / Rhode Island / Bristol County
Weather alerts in Bristol County, Rhode Island, 2019
119 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 119
- Warnings
- 22
- Watches
- 17
- Advisories
- 41
- Busiest month
- July25 alerts
- Busiest day
- July 17, 20195 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, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 3 | 50% | 1 | 0% | |
| Flash flood warnings | 0 | 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 8, 6:01 PM EST | Dense Fog Advisory | BOX | 10 hr |
| Jan 9, 4:17 AM EST | Dense Fog Advisory | BOX | 3 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, 3:02 PM EST | Coastal Flood Advisory | BOX | 45 hr |
| Jan 19, 4:29 AM EST | Winter Weather Advisory | BOX | 39 hr |
| Jan 19, 3:34 PM EST | Flood Watch | BOX | 24 hr |
| Jan 20, 4:20 AM EST | Wind Chill Advisory | BOX | 54 hr |
| Jan 20, 10:23 AM EST | Areal Flood Warning | BOX | 4 hr |
| Jan 23, 3:50 AM EST | Flash Flood Watch | BOX | 39 hr |
| Jan 23, 3:08 PM EST | High Wind Warning | BOX | 26 hr |
| Jan 24, 12:58 PM EST | Areal Flood Advisory | BOX | 4 hr |
| Jan 24, 3:27 PM EST | Areal Flood Warning | BOX | 6 hr |
| Jan 30, 3:21 AM EST | Wind Advisory | BOX | 18 hr |
| Jan 30, 3:29 AM EST | Wind Chill Advisory | BOX | 30 hr |
| Jan 30, 5:58 PM EST | Snow Squall Warning | BOX | 47 min |
| Feb 8, 3:29 AM EST | Wind Advisory | BOX | 35 hr |
| Feb 11, 4:01 AM EST | Winter Weather Advisory | BOX | 51 hr |
| Feb 12, 12:29 PM EST | Special Weather Statement | BOX | 2 hr |
| Feb 17, 3:48 AM EST | Winter Storm Watch | BOX | 12 hr |
| Feb 17, 3:48 AM EST | Winter Weather Advisory | BOX | 35 hr |
| Feb 17, 3:30 PM EST | Winter Storm Warning | BOX | 23 hr |
| Feb 19, 3:38 PM EST | Winter Weather Advisory | BOX | 39 hr |
| Feb 20, 4:01 PM EST | Coastal Flood Statement | BOX | 23 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 25, 10:42 AM EST | Snow Squall Warning | BOX | 18 min |
| Feb 25, 7:01 PM EST | Wind Advisory | BOX | 20 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 3, 3:18 AM EST | Winter Storm Warning | BOX | 31 hr |
| Mar 3, 10:44 PM EST | Mesoscale Discussion | SPC | 4 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 14, 3:00 AM EDT | Wind Advisory | BOX | 49 hr |
| Apr 14, 9:05 PM EDT | Dense Fog Advisory | BOX | 9 hr |
| Apr 15, 6:25 AM EDT | Areal Flood Advisory | BOX | 110 min |
| Apr 19, 4:14 AM EDT | Coastal Flood Statement | BOX | 42 hr |
| Apr 19, 1:48 PM EDT | Wind Advisory | BOX | 6 hr |
| Apr 22, 1:06 AM EDT | Dense Fog Advisory | BOX | 2 hr |
| May 20, 1:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 24, 12:52 AM EDT | Special Weather Statement | BOX | 53 min |
| Jun 1, 4:10 AM EDT | Dense Fog Advisory | BOX | 5 hr |
| Jun 1, 11:12 PM EDT | Dense Fog Advisory | BOX | 9 hr |
| Jun 20, 4:00 PM EDT | Dense Fog Advisory | BOX | 17 hr |
| Jun 22, 2:06 PM EDT | Special Weather Statement | BOX | 54 min |
| Jun 22, 2:48 PM EDT | Special Weather Statement | BOX | 42 min |
| Jun 29, 3:21 PM EDT | Severe Thunderstorm Warning | BOX | 54 min |
| Jun 29, 4:14 PM EDT | Severe Thunderstorm Warning | BOX | 61 min |
| Jun 30, 3:17 PM EDT | Special Weather Statement | BOX | 58 min |
| Jul 5, 11:45 PM EDT | Dense Fog Advisory | BOX | 7 hr |
| Jul 6, 1:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 3:06 AM EDT | Special Weather Statement | BOX | 39 min |
| Jul 12, 3:46 AM EDT | Special Weather Statement | BOX | 59 min |
| Jul 12, 5:23 AM EDT | Special Weather Statement | BOX | 52 min |
| Jul 12, 5:36 AM EDT | Areal Flood Warning | BOX | 83 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, 3:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 6:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 17, 11:08 PM EDT | Special Weather Statement | BOX | 52 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 22, 2:17 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 22, 8:01 PM EDT | Areal Flood Warning | BOX | 3 hr |
| Jul 22, 8:36 PM EDT | Special Weather Statement | BOX | 39 min |
| Jul 22, 8:40 PM EDT | Severe Thunderstorm Warning | BOX | 65 min |
| Jul 22, 8:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 23, 3:27 AM EDT | Flash Flood Watch | BOX | 10 hr |
| Jul 28, 4:00 PM EDT | Heat Advisory | BOX | 3 days |
| Jul 31, 2:54 AM EDT | Heat Advisory | BOX | 15 hr |
| Jul 31, 12:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 31, 1:17 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 31, 4:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Aug 6, 6:19 AM EDT | Dense Fog Advisory | BOX | 97 min |
| Aug 7, 1:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 7, 11:39 PM EDT | Severe Thunderstorm Warning | BOX | 66 min |
| Aug 8, 12:14 AM EDT | Areal Flood Warning | BOX | 2 hr |
| Aug 8, 12:49 AM EDT | Special Weather Statement | BOX | 41 min |
| Aug 8, 1:00 AM EDT | Severe Thunderstorm Warning | BOX | 60 min |
| Aug 8, 9:01 PM EDT | Special Weather Statement | BOX | 44 min |
| Aug 9, 9:34 PM EDT | Special Weather Statement | BOX | 41 min |
| Aug 16, 4:10 AM EDT | Dense Fog Advisory | BOX | 4 hr |
| Aug 18, 3:03 AM EDT | Dense Fog Advisory | BOX | 6 hr |
| Aug 19, 1:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Aug 19, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 19, 6:10 PM EDT | Special Weather Statement | BOX | 50 min |
| Aug 19, 6:35 PM EDT | Areal Flood Warning | 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 | Severe Thunderstorm Warning | BOX | 31 min |
| Aug 21, 3:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 21, 6:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 21, 10:29 PM EDT | Special Weather Statement | BOX | 61 min |
| Aug 28, 2:53 AM EDT | Flash Flood Watch | BOX | 28 hr |
| Sep 26, 6:45 AM EDT | Dense Fog Advisory | BOX | 2 hr |
| Sep 26, 3:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 27, 2:58 AM EDT | Dense Fog Advisory | BOX | 4 hr |
| Oct 4, 3:29 AM EDT | Frost Advisory | BOX | 28 hr |
| Oct 9, 3:16 AM EDT | Wind Advisory | BOX | 69 hr |
| Oct 16, 4:23 AM EDT | Wind Advisory | BOX | 38 hr |
| Oct 16, 8:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Oct 26, 3:37 PM EDT | Coastal Flood Advisory | BOX | 30 hr |
| Oct 27, 2:52 PM EDT | Special Weather Statement | BOX | 3 hr |
| Oct 30, 3:42 AM EDT | High Wind Watch | BOX | 24 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 27, 6:01 PM EST | Special Weather Statement | BOX | 44 min |
| Nov 27, 6:55 PM EST | Special Weather Statement | BOX | 50 min |
| 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, 4:51 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 10, 3:35 AM EST | Winter Weather Advisory | BOX | 32 hr |
| Dec 13, 2:46 AM EST | Flood Watch | BOX | 31 hr |
| Dec 13, 2:49 AM EST | Wind Advisory | BOX | 34 hr |
| Dec 16, 3:44 AM EST | Winter Weather Advisory | BOX | 41 hr |
| Dec 18, 4:47 PM EST | Special Weather Statement | BOX | 58 min |
| Dec 18, 5:18 PM EST | Snow Squall Warning | BOX | 42 min |
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 Warning | 6 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 19 |
| Flooding | |
| Areal Flood Warning | 6 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Areal Flood Advisory | 2 |
| Winter | |
| Snow Squall Warning | 3 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 13 |
| Coast and beach | |
| Coastal Flood Advisory | 2 |
| Coastal Flood Statement | 2 |
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.