Alert archive / New York / Bronx County

Weather alerts in Bronx County, New York, 2020

143 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Bronx County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
143
Warnings
24
Watches
16
Advisories
41
Busiest month
July33 alerts
Busiest day
July 22, 20208 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 2 tornado warnings covering Bronx County in 2020 had a tornado report inside them.

Bronx County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings11109%2100%18 min
Flash flood warnings4250%0

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS New York, NY: tornado warnings8188%333%2 min
NWS New York, NY: severe thunderstorm warnings1046240%19685%26 min
NWS New York, NY: flash flood warnings301743%6488%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 4, 11:36 AM ESTDense Fog AdvisoryOKX6 hr
Jan 7, 3:39 PM ESTWind AdvisoryOKX27 hr
Jan 8, 9:08 AM ESTSpecial Weather StatementOKX37 min
Jan 8, 1:44 PM ESTSpecial Weather StatementOKX46 min
Jan 8, 2:33 PM ESTSpecial Weather StatementOKX42 min
Jan 11, 1:12 PM ESTWind AdvisoryOKX24 hr
Jan 15, 1:19 PM ESTWind AdvisoryOKX30 hr
Jan 17, 3:54 AM ESTWinter Weather AdvisoryOKX45 hr
Jan 24, 3:27 AM ESTCoastal Flood StatementOKX36 hr
Feb 6, 3:37 PM ESTWind AdvisoryOKX30 hr
Feb 6, 8:13 PM ESTHigh Wind WarningOKX23 hr
Feb 27, 10:08 AM ESTWind AdvisoryOKX8 hr
Mar 3, 10:31 PM ESTSpecial Weather StatementOKX44 min
Mar 12, 3:40 AM EDTCoastal Flood StatementOKX24 hr
Mar 20, 5:40 AM EDTDense Fog AdvisoryOKX8 hr
Apr 3, 4:04 PM EDTCoastal Flood StatementOKX18 hr
Apr 7, 4:25 PM EDTCoastal Flood StatementOKX34 hr
Apr 8, 3:39 PM EDTCoastal Flood StatementOKX22 hr
Apr 8, 3:44 PM EDTWind AdvisoryOKX28 hr
Apr 9, 11:09 AM EDTMesoscale DiscussionSPC66 min
Apr 9, 12:01 PM EDTSevere Thunderstorm WatchSPC4 hr
Apr 9, 1:26 PM EDTSpecial Weather StatementOKX49 min
Apr 11, 4:12 PM EDTHigh Wind WatchOKX24 hr
Apr 12, 3:54 PM EDTHigh Wind WarningOKX27 hr
Apr 12, 5:01 PM EDTCoastal Flood StatementOKX25 hr
Apr 13, 9:35 AM EDTAreal Flood AdvisoryOKX115 min
Apr 13, 2:42 PM EDTMesoscale DiscussionSPC93 min
Apr 13, 4:56 PM EDTSpecial Weather StatementOKX49 min
Apr 20, 3:51 PM EDTWind AdvisoryOKX30 hr
Apr 21, 1:27 PM EDTSevere Thunderstorm WatchSPC3 hr
Apr 21, 2:12 PM EDTSevere Thunderstorm WarningOKX48 min
Apr 21, 2:33 PM EDTTornado WarningOKX27 min
Apr 30, 10:47 AM EDTWind AdvisoryOKX12 hr
May 5, 3:37 PM EDTCoastal Flood AdvisoryOKX33 hr
May 6, 4:52 PM EDTCoastal Flood AdvisoryOKX33 hr
May 7, 3:41 PM EDTCoastal Flood StatementOKX34 hr
May 7, 3:41 PM EDTCoastal Flood AdvisoryOKX34 hr
May 11, 3:31 PM EDTSpecial Weather StatementOKX29 min
May 11, 4:50 PM EDTSpecial Weather StatementOKX40 min
May 29, 2:12 PM EDTSpecial Weather StatementOKX48 min
May 29, 7:53 PM EDTSpecial Weather StatementOKX52 min
Jun 3, 6:46 PM EDTCoastal Flood StatementOKX29 hr
Jun 3, 6:58 PM EDTMesoscale DiscussionSPC92 min
Jun 3, 9:03 PM EDTSpecial Weather StatementOKX42 min
Jun 5, 12:19 AM EDTSpecial Weather StatementOKX41 min
Jun 6, 2:16 PM EDTSpecial Weather StatementOKX59 min
Jun 6, 2:33 PM EDTSpecial Weather StatementOKX42 min
Jun 27, 12:34 PM EDTMesoscale DiscussionSPC2 hr
Jun 28, 12:37 PM EDTMesoscale DiscussionSPC113 min
Jun 28, 1:32 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 28, 6:47 PM EDTSevere Thunderstorm WarningOKX35 min
Jun 28, 7:20 PM EDTMesoscale DiscussionSPC55 min
Jun 29, 5:44 PM EDTSpecial Weather StatementOKX61 min
Jun 29, 5:49 PM EDTAreal Flood AdvisoryOKX48 min
Jun 30, 11:59 AM EDTAreal Flood AdvisoryOKX61 min
Jul 1, 6:10 PM EDTSpecial Weather StatementOKX65 min
Jul 2, 6:30 PM EDTMesoscale DiscussionSPC2 hr
Jul 3, 5:01 PM EDTSpecial Weather StatementOKX59 min
Jul 3, 7:26 PM EDTAreal Flood AdvisoryOKX94 min
Jul 6, 3:31 PM EDTSevere Thunderstorm WarningOKX44 min
Jul 6, 4:02 PM EDTFlash Flood WarningOKX115 min
Jul 6, 4:33 PM EDTMesoscale DiscussionSPC117 min
Jul 6, 4:35 PM EDTAreal Flood AdvisoryOKX3 hr
Jul 6, 4:39 PM EDTSevere Thunderstorm WarningOKX66 min
Jul 6, 4:49 PM EDTFlash Flood WarningOKX62 min
Jul 8, 5:24 AM EDTHeat AdvisoryOKX35 hr
Jul 8, 4:37 PM EDTSpecial Weather StatementOKX38 min
Jul 9, 4:05 PM EDTFlash Flood WatchOKX29 hr
Jul 9, 5:39 PM EDTTropical Storm WarningOKX32 hr
Jul 10, 1:11 PM EDTAreal Flood AdvisoryOKX3 hr
Jul 10, 1:30 PM EDTFlash Flood WarningOKX4 hr
Jul 11, 2:25 PM EDTAreal Flood AdvisoryOKX3 hr
Jul 11, 7:05 PM EDTSpecial Weather StatementOKX40 min
Jul 17, 3:41 PM EDTHeat AdvisoryOKX3 days
Jul 22, 1:45 PM EDTMesoscale DiscussionSPC2 hr
Jul 22, 2:57 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 22, 3:27 PM EDTHeat AdvisoryOKX28 hr
Jul 22, 6:01 PM EDTSpecial Weather StatementOKX44 min
Jul 22, 6:30 PM EDTSevere Thunderstorm WarningOKX45 min
Jul 22, 6:55 PM EDTAreal Flood AdvisoryOKX95 min
Jul 22, 7:01 PM EDTMesoscale DiscussionSPC119 min
Jul 22, 7:17 PM EDTSpecial Weather StatementOKX43 min
Jul 23, 2:49 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 4:28 PM EDTMesoscale DiscussionSPC2 hr
Jul 23, 6:48 PM EDTMesoscale DiscussionSPC57 min
Jul 25, 2:57 PM EDTHeat AdvisoryOKX3 days
Jul 30, 1:20 PM EDTMesoscale DiscussionSPC115 min
Jul 31, 1:25 AM EDTSpecial Weather StatementOKX35 min
Aug 2, 3:32 PM EDTFlash Flood WatchOKX48 hr
Aug 2, 6:00 PM EDTTropical Storm WatchOKX17 hr
Aug 3, 5:20 AM EDTTropical Storm WarningOKX39 hr
Aug 3, 4:43 PM EDTCoastal Flood AdvisoryOKX33 hr
Aug 3, 8:51 PM EDTSpecial Weather StatementOKX39 min
Aug 3, 9:05 PM EDTSpecial Weather StatementOKX40 min
Aug 4, 6:45 AM EDTMesoscale DiscussionSPC3 hr
Aug 4, 7:23 AM EDTTornado WatchSPC9 hr
Aug 4, 11:13 AM EDTMesoscale DiscussionSPC92 min
Aug 4, 11:51 AM EDTAreal Flood AdvisoryOKX3 hr
Aug 9, 3:52 PM EDTHeat AdvisoryOKX3 days
Aug 12, 2:59 PM EDTSpecial Weather StatementOKX46 min
Aug 12, 3:14 PM EDTFlash Flood WarningOKX113 min
Aug 12, 3:51 PM EDTSevere Thunderstorm WarningOKX39 min
Aug 12, 3:59 PM EDTAreal Flood AdvisoryOKX92 min
Aug 13, 10:20 AM EDTAreal Flood AdvisoryOKX95 min
Aug 13, 11:41 AM EDTAreal Flood AdvisoryOKX105 min
Aug 22, 2:24 PM EDTAreal Flood AdvisoryOKX66 min
Aug 22, 2:34 PM EDTSpecial Weather StatementOKX26 min
Aug 25, 3:12 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 25, 4:01 PM EDTSpecial Weather StatementOKX44 min
Aug 25, 6:00 PM EDTSevere Thunderstorm WarningOKX45 min
Aug 25, 6:11 PM EDTMesoscale DiscussionSPC2 hr
Aug 27, 6:35 PM EDTMesoscale DiscussionSPC115 min
Aug 27, 7:27 PM EDTSpecial Weather StatementOKX48 min
Aug 27, 7:34 PM EDTSevere Thunderstorm WarningOKX41 min
Aug 27, 8:14 PM EDTSevere Thunderstorm WarningOKX31 min
Aug 29, 6:45 PM EDTMesoscale DiscussionSPC2 hr
Sep 10, 6:19 AM EDTAreal Flood AdvisoryOKX116 min
Sep 10, 9:16 PM EDTAreal Flood AdvisoryOKX89 min
Sep 30, 2:59 AM EDTAreal Flood AdvisoryOKX4 hr
Sep 30, 3:36 AM EDTSpecial Weather StatementOKX54 min
Oct 6, 3:15 PM EDTWind AdvisoryOKX31 hr
Oct 21, 12:25 AM EDTDense Fog AdvisoryOKX9 hr
Nov 1, 3:05 PM ESTWind AdvisoryOKX26 hr
Nov 15, 3:33 PM ESTMesoscale DiscussionSPC2 hr
Nov 15, 7:01 PM ESTMesoscale DiscussionSPC59 min
Nov 15, 7:32 PM ESTSevere Thunderstorm WatchSPC5 hr
Nov 15, 7:57 PM ESTSevere Thunderstorm WarningOKX63 min
Nov 15, 8:36 PM ESTTornado WarningOKX24 min
Nov 15, 8:41 PM ESTSevere Thunderstorm WarningOKX64 min
Nov 16, 3:46 PM ESTFreeze WatchOKX23 hr
Nov 17, 2:40 PM ESTFreeze WarningOKX17 hr
Nov 30, 10:54 AM ESTWind AdvisoryOKX11 hr
Nov 30, 4:37 PM ESTMesoscale DiscussionSPC53 min
Nov 30, 5:41 PM ESTSpecial Weather StatementOKX49 min
Nov 30, 6:48 PM ESTSpecial Weather StatementOKX87 min
Dec 14, 4:00 PM ESTWinter Storm WatchOKX36 hr
Dec 15, 3:40 PM ESTWinter Storm WarningOKX45 hr
Dec 15, 3:41 PM ESTCoastal Flood AdvisoryOKX37 hr
Dec 16, 5:31 PM ESTSpecial Weather StatementOKX74 min
Dec 16, 6:48 PM ESTMesoscale DiscussionSPC5 hr
Dec 22, 3:49 PM ESTHigh Wind WatchOKX23 hr
Dec 23, 2:43 PM ESTFlood WatchOKX43 hr
Dec 23, 2:55 PM ESTHigh Wind WarningOKX41 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 archive20192021

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.