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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings00
Flash flood warnings3167%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Boston/Norton, MA: tornado warnings16475%1242%11 min
NWS Boston/Norton, MA: severe thunderstorm warnings914452%23359%24 min
NWS Boston/Norton, MA: flash flood warnings361072%11494%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.

IssuedProductOfficeLasted
Jan 2, 3:09 AM ESTWinter Storm WatchBOX25 hr
Jan 2, 3:50 PM ESTHigh Wind WatchBOX12 hr
Jan 3, 3:50 AM ESTBlizzard WarningBOX39 hr
Jan 3, 3:50 AM ESTWinter Storm WarningBOX39 hr
Jan 4, 3:46 AM ESTWind Chill WatchBOX24 hr
Jan 4, 6:06 AM ESTMesoscale DiscussionSPC6 hr
Jan 4, 7:14 PM ESTWind AdvisoryBOX5 hr
Jan 5, 4:02 AM ESTWind Chill AdvisoryBOX54 hr
Jan 5, 8:22 AM ESTWind AdvisoryBOX14 hr
Jan 10, 3:17 PM ESTFlood WatchBOX70 hr
Jan 12, 3:35 AM ESTWinter Weather AdvisoryBOX33 hr
Jan 12, 7:30 PM ESTAreal Flood WarningBOX6 hr
Jan 13, 1:06 AM ESTAreal Flood WarningBOX6 hr
Jan 16, 3:56 AM ESTWinter Weather AdvisoryBOX35 hr
Jan 17, 4:47 PM ESTSpecial Weather StatementBOX88 min
Jan 22, 1:11 PM ESTDense Fog AdvisoryBOX22 hr
Jan 22, 2:08 PM ESTWind AdvisoryBOX28 hr
Jan 28, 4:02 PM ESTWinter Weather AdvisoryBOX45 hr
Feb 10, 2:15 PM ESTFlood WatchBOX32 hr
Feb 14, 5:46 AM ESTWinter Weather AdvisoryBOX3 hr
Feb 16, 3:30 AM ESTWinter Storm WatchBOX34 hr
Feb 17, 3:30 AM ESTWinter Storm WarningBOX27 hr
Feb 28, 3:27 PM ESTFlood WatchBOX57 hr
Feb 28, 3:28 PM ESTHigh Wind WatchBOX24 hr
Mar 1, 3:27 AM ESTHigh Wind WarningBOX52 hr
Mar 1, 11:37 AM ESTCoastal Flood AdvisoryBOX41 hr
Mar 1, 3:38 PM ESTWind AdvisoryBOX60 hr
Mar 2, 4:06 AM ESTWinter Weather AdvisoryBOX18 hr
Mar 2, 1:27 PM ESTAreal Flood WarningBOX12 hr
Mar 4, 4:10 AM ESTCoastal Flood AdvisoryBOX11 hr
Mar 4, 8:35 PM ESTCoastal Flood StatementBOX3 hr
Mar 5, 3:42 AM ESTCoastal Flood StatementBOX8 hr
Mar 6, 12:22 PM ESTFlood WatchBOX25 hr
Mar 6, 2:33 PM ESTWind AdvisoryBOX37 hr
Mar 7, 1:25 PM ESTMesoscale DiscussionSPC6 hr
Mar 9, 8:26 AM ESTSpecial Weather StatementBOX3 hr
Mar 11, 3:51 AM EDTWinter Storm WatchBOX24 hr
Mar 12, 3:46 AM EDTWinter Storm WarningBOX46 hr
Mar 13, 5:47 AM EDTSpecial Weather StatementBOX58 min
Mar 13, 6:48 AM EDTSpecial Weather StatementBOX87 min
Mar 13, 7:08 AM EDTMesoscale DiscussionSPC6 hr
Mar 19, 3:27 PM EDTWinter Storm WatchBOX36 hr
Mar 20, 4:02 AM EDTWinter Storm WarningBOX42 hr
Mar 20, 2:48 PM EDTWinter Weather AdvisoryBOX38 hr
Mar 20, 2:53 PM EDTWind AdvisoryBOX43 hr
Mar 21, 8:57 PM EDTMesoscale DiscussionSPC6 hr
Mar 30, 2:07 AM EDTDense Fog AdvisoryBOX8 hr
Apr 1, 3:59 PM EDTWinter Weather AdvisoryBOX20 hr
Apr 3, 3:00 PM EDTWind AdvisoryBOX37 hr
Apr 3, 7:10 PM EDTDense Fog AdvisoryBOX21 hr
Apr 11, 2:23 AM EDTDense Fog AdvisoryBOX6 hr
Apr 16, 9:51 AM EDTWind AdvisoryBOX10 hr
Apr 16, 3:42 PM EDTCoastal Flood AdvisoryBOX7 hr
Apr 16, 5:14 PM EDTSpecial Weather StatementBOX46 min
May 8, 3:36 PM EDTDense Fog AdvisoryBOX18 hr
May 15, 1:58 PM EDTMesoscale DiscussionSPC2 hr
May 15, 2:26 PM EDTSevere Thunderstorm WatchSPC5 hr
May 15, 5:31 PM EDTSpecial Weather StatementBOX59 min
May 15, 6:14 PM EDTSpecial Weather StatementBOX61 min
May 19, 7:27 PM EDTDense Fog AdvisoryBOX7 hr
May 29, 9:38 PM EDTDense Fog AdvisoryBOX8 hr
Jun 1, 6:24 AM EDTDense Fog AdvisoryBOX3 hr
Jun 1, 3:03 PM EDTDense Fog AdvisoryBOX19 hr
Jun 30, 4:16 PM EDTHeat AdvisoryBOX28 hr
Jul 1, 3:30 PM EDTHeat AdvisoryBOX4 days
Jul 5, 3:30 PM EDTFlash Flood WatchBOX24 hr
Jul 6, 12:02 PM EDTSpecial Weather StatementBOX88 min
Jul 15, 4:13 PM EDTAreal Flood AdvisoryBOX62 min
Jul 17, 2:19 PM EDTMesoscale DiscussionSPC86 min
Jul 25, 9:39 AM EDTFlash Flood WatchBOX18 hr
Jul 26, 5:32 PM EDTSpecial Weather StatementBOX88 min
Jul 28, 9:42 PM EDTSpecial Weather StatementBOX48 min
Aug 3, 2:41 PM EDTFlash Flood WatchBOX25 hr
Aug 4, 9:53 AM EDTMesoscale DiscussionSPC37 min
Aug 4, 10:00 AM EDTAreal Flood AdvisoryBOX2 hr
Aug 4, 11:14 AM EDTAreal Flood AdvisoryBOX3 hr
Aug 4, 11:31 AM EDTFlash Flood WarningBOX3 hr
Aug 4, 12:08 PM EDTFlash Flood WarningBOX3 hr
Aug 5, 2:58 PM EDTHeat AdvisoryBOX53 hr
Aug 8, 3:29 AM EDTHeat AdvisoryBOX15 hr
Aug 9, 3:25 AM EDTHeat AdvisoryBOX14 hr
Aug 10, 3:20 PM EDTFlash Flood WatchBOX48 hr
Aug 12, 10:55 AM EDTAreal Flood AdvisoryBOX2 hr
Aug 18, 12:11 PM EDTMesoscale DiscussionSPC2 hr
Aug 18, 4:25 PM EDTAreal Flood AdvisoryBOX2 hr
Aug 25, 4:21 AM EDTDense Fog AdvisoryBOX3 hr
Aug 27, 2:51 AM EDTHeat AdvisoryBOX66 hr
Sep 2, 2:54 PM EDTHeat AdvisoryBOX48 hr
Sep 5, 2:55 PM EDTHeat AdvisoryBOX27 hr
Sep 6, 5:08 PM EDTSpecial Weather StatementBOX52 min
Sep 11, 9:04 PM EDTDense Fog AdvisoryBOX12 hr
Sep 12, 3:10 PM EDTFlash Flood WatchBOX16 hr
Sep 13, 4:28 AM EDTAreal Flood AdvisoryBOX2 hr
Sep 18, 1:31 PM EDTFlash Flood WarningBOX4 hr
Sep 18, 2:07 PM EDTSpecial Weather StatementBOX38 min
Sep 25, 5:45 PM EDTAreal Flood AdvisoryBOX60 min
Sep 25, 9:25 PM EDTAreal Flood AdvisoryBOX2 hr
Sep 26, 1:44 AM EDTAreal Flood AdvisoryBOX2 hr
Sep 27, 12:16 AM EDTSpecial Weather StatementBOX44 min
Sep 27, 12:59 AM EDTSpecial Weather StatementBOX31 min
Sep 27, 3:30 PM EDTFlash Flood WatchBOX21 hr
Oct 10, 2:42 PM EDTFlash Flood WatchBOX47 hr
Oct 11, 3:14 PM EDTWind AdvisoryBOX26 hr
Oct 12, 5:06 AM EDTAreal Flood AdvisoryBOX3 hr
Oct 15, 8:44 PM EDTWind AdvisoryBOX9 hr
Oct 17, 2:51 AM EDTWind AdvisoryBOX31 hr
Oct 18, 3:42 AM EDTFrost AdvisoryBOX29 hr
Oct 18, 3:42 AM EDTFreeze WarningBOX29 hr
Oct 20, 4:12 PM EDTFreeze WatchBOX24 hr
Oct 21, 2:15 AM EDTFreeze WarningBOX31 hr
Oct 23, 3:54 PM EDTMesoscale DiscussionSPC66 min
Oct 26, 2:30 PM EDTFlash Flood WatchBOX28 hr
Oct 26, 3:28 PM EDTWind AdvisoryBOX31 hr
Oct 29, 8:39 AM EDTMesoscale DiscussionSPC3 hr
Nov 2, 4:35 AM EDTHigh Wind WatchBOX10 hr
Nov 2, 2:40 PM EDTWind AdvisoryBOX28 hr
Nov 3, 5:59 AM EDTAreal Flood AdvisoryBOX3 hr
Nov 8, 3:20 PM ESTFlood WatchBOX36 hr
Nov 9, 3:32 PM ESTWind AdvisoryBOX27 hr
Nov 12, 10:23 PM ESTFlood WatchBOX14 hr
Nov 14, 3:31 PM ESTWinter Weather AdvisoryBOX34 hr
Nov 15, 4:39 PM ESTMesoscale DiscussionSPC6 hr
Nov 21, 5:14 PM ESTSpecial Weather StatementBOX61 min
Nov 26, 3:16 AM ESTDense Fog AdvisoryBOX7 hr
Dec 19, 3:18 PM ESTFlood WatchBOX58 hr
Dec 20, 3:16 PM ESTHigh Wind WarningBOX28 hr
Dec 20, 3:16 PM ESTWind AdvisoryBOX31 hr
Dec 20, 3:22 PM ESTCoastal Flood AdvisoryBOX30 hr
Dec 21, 10:19 PM ESTCoastal Flood AdvisoryBOX15 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 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.