Alert archive / New Jersey / Bergen County

Weather alerts in Bergen County, New Jersey, 2017

138 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Bergen County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
138
Warnings
22
Watches
23
Advisories
49
Busiest month
August23 alerts
Busiest day
August 2, 20177 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Bergen County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings7529%838%28 min
Flash flood warnings3233%2100%35 min

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS New York, NY: tornado warnings10100%0
NWS New York, NY: severe thunderstorm warnings413124%9765%23 min
NWS New York, NY: flash flood warnings211338%4854%52 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, 3:41 AM ESTWinter Weather AdvisoryOKX5 hr
Jan 2, 9:05 AM ESTFreezing Rain AdvisoryOKX55 min
Jan 5, 3:14 PM ESTWinter Weather AdvisoryOKX19 hr
Jan 7, 3:49 AM ESTWinter Weather AdvisoryOKX17 hr
Jan 21, 5:20 AM ESTHigh Wind WatchOKX281 days
Jan 21, 6:52 PM ESTDense Fog AdvisoryOKX10 hr
Jan 22, 11:23 AM ESTWind AdvisoryOKX43 hr
Jan 22, 3:49 PM ESTFlood WatchOKX32 hr
Jan 30, 4:00 PM ESTWinter Weather AdvisoryOKX27 hr
Feb 7, 3:22 PM ESTWinter Storm WatchOKX12 hr
Feb 8, 3:42 AM ESTWinter Storm WarningOKX38 hr
Feb 9, 4:55 AM ESTMesoscale DiscussionSPC6 hr
Feb 9, 9:21 AM ESTSpecial Weather StatementOKX84 min
Feb 11, 3:43 AM ESTWinter Weather AdvisoryOKX45 hr
Feb 12, 4:15 AM ESTHigh Wind WatchOKX11 hr
Feb 12, 10:36 AM ESTMesoscale DiscussionSPC24 min
Feb 12, 12:02 PM ESTMesoscale DiscussionSPC4 hr
Feb 12, 3:35 PM ESTWind AdvisoryOKX26 hr
Feb 25, 2:46 PM ESTSevere Thunderstorm WatchSPC5 hr
Feb 25, 4:44 PM ESTMesoscale DiscussionSPC91 min
Feb 25, 4:50 PM ESTSpecial Weather StatementOKX115 min
Feb 25, 6:10 PM ESTSevere Thunderstorm WarningOKX50 min
Feb 25, 6:37 PM ESTSpecial Weather StatementOKX38 min
Mar 1, 3:45 AM ESTWind AdvisoryOKX23 hr
Mar 2, 3:14 AM ESTHigh Wind WarningOKX10 hr
Mar 2, 12:52 PM ESTWind AdvisoryOKX5 hr
Mar 9, 3:27 AM ESTWinter Weather AdvisoryOKX37 hr
Mar 10, 8:18 AM ESTMesoscale DiscussionSPC4 hr
Mar 11, 3:38 PM ESTBlizzard WatchOKX36 hr
Mar 11, 3:38 PM ESTWinter Storm WatchOKX24 hr
Mar 12, 4:12 PM EDTWinter Storm WarningOKX40 hr
Mar 13, 4:18 AM EDTBlizzard WarningOKX35 hr
Mar 14, 3:22 AM EDTMesoscale DiscussionSPC5 hr
Mar 14, 7:59 AM EDTWinter Storm WarningOKX7 hr
Mar 14, 8:55 AM EDTWind AdvisoryOKX9 hr
Mar 14, 9:04 AM EDTMesoscale DiscussionSPC4 hr
Mar 22, 4:08 AM EDTWind AdvisoryOKX14 hr
Apr 2, 3:48 PM EDTFlood WatchOKX36 hr
Apr 4, 3:27 PM EDTFlood WatchOKX50 hr
Apr 6, 2:35 PM EDTAreal Flood AdvisoryOKX115 min
Apr 21, 12:21 AM EDTSpecial Weather StatementOKX24 min
Apr 25, 9:11 PM EDTAreal Flood AdvisoryOKX64 min
May 1, 7:16 PM EDTMesoscale DiscussionSPC2 hr
May 5, 12:09 PM EDTAreal Flood AdvisoryOKX3 hr
May 5, 12:28 PM EDTFlash Flood WarningOKX4 hr
May 6, 7:41 PM EDTSpecial Weather StatementOKX49 min
May 14, 4:54 PM EDTSevere Thunderstorm WarningOKX42 min
May 15, 10:10 AM EDTWind AdvisoryOKX5 hr
May 19, 3:07 PM EDTSpecial Weather StatementOKX38 min
May 19, 3:36 PM EDTMesoscale DiscussionSPC114 min
May 31, 9:31 PM EDTSpecial Weather StatementOKX44 min
Jun 13, 2:25 PM EDTMesoscale DiscussionSPC3 hr
Jun 13, 7:44 PM EDTSevere Thunderstorm WarningOKX41 min
Jun 16, 5:24 PM EDTAreal Flood AdvisoryOKX2 hr
Jun 17, 11:35 AM EDTAreal Flood AdvisoryOKX115 min
Jun 17, 12:26 PM EDTAreal Flood AdvisoryOKX2 hr
Jun 18, 3:48 AM EDTFlash Flood WatchOKX40 hr
Jun 19, 11:13 AM EDTSevere Thunderstorm WatchSPC9 hr
Jun 19, 2:21 PM EDTMesoscale DiscussionSPC114 min
Jun 19, 4:35 PM EDTSevere Thunderstorm WarningOKX55 min
Jun 19, 4:53 PM EDTFlash Flood WarningOKX3 hr
Jun 19, 5:01 PM EDTSevere Thunderstorm WarningOKX44 min
Jun 21, 2:38 PM EDTMesoscale DiscussionSPC3 hr
Jun 21, 4:20 PM EDTSpecial Weather StatementOKX40 min
Jun 23, 5:09 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 24, 3:59 AM EDTAreal Flood AdvisoryOKX2 hr
Jun 24, 5:57 AM EDTAreal Flood AdvisoryOKX2 hr
Jun 24, 6:54 AM EDTMesoscale DiscussionSPC66 min
Jun 30, 6:08 PM EDTSpecial Weather StatementOKX52 min
Jul 1, 1:19 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 1, 6:55 PM EDTAreal Flood AdvisoryOKX3 hr
Jul 7, 7:55 AM EDTAreal Flood AdvisoryOKX4 hr
Jul 7, 8:58 AM EDTAreal Flood AdvisoryOKX3 hr
Jul 7, 10:16 AM EDTAreal Flood WarningOKX6 hr
Jul 7, 3:59 PM EDTAreal Flood WarningOKX2 hr
Jul 12, 12:35 PM EDTHeat AdvisoryOKX29 hr
Jul 13, 11:09 AM EDTMesoscale DiscussionSPC2 hr
Jul 13, 1:11 PM EDTFlash Flood WatchOKX6 hr
Jul 13, 1:57 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 13, 4:43 PM EDTMesoscale DiscussionSPC62 min
Jul 14, 8:29 AM EDTAreal Flood AdvisoryOKX2 hr
Jul 17, 6:17 PM EDTAreal Flood AdvisoryOKX118 min
Jul 17, 6:45 PM EDTFlash Flood WarningOKX3 hr
Jul 19, 3:17 AM EDTHeat AdvisoryOKX63 hr
Jul 20, 4:33 PM EDTMesoscale DiscussionSPC87 min
Jul 20, 5:03 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 20, 7:01 PM EDTSpecial Weather StatementOKX44 min
Jul 20, 7:25 PM EDTAreal Flood AdvisoryOKX2 hr
Jul 20, 7:48 PM EDTMesoscale DiscussionSPC87 min
Jul 21, 3:36 PM EDTHeat AdvisoryOKX26 hr
Jul 23, 3:41 PM EDTFlash Flood WatchOKX15 hr
Aug 2, 12:16 PM EDTSpecial Weather StatementOKX29 min
Aug 2, 12:32 PM EDTSevere Thunderstorm WarningOKX43 min
Aug 2, 12:49 PM EDTAreal Flood AdvisoryOKX56 min
Aug 2, 1:20 PM EDTSevere Thunderstorm WarningOKX55 min
Aug 2, 1:30 PM EDTMesoscale DiscussionSPC2 hr
Aug 2, 3:10 PM EDTAreal Flood AdvisoryOKX2 hr
Aug 2, 5:14 PM EDTAreal Flood AdvisoryOKX2 hr
Aug 5, 4:24 AM EDTSpecial Weather StatementOKX66 min
Aug 5, 4:37 AM EDTAreal Flood AdvisoryOKX113 min
Aug 7, 3:00 AM EDTFlash Flood WatchOKX15 hr
Aug 18, 6:11 AM EDTSpecial Weather StatementOKX49 min
Aug 18, 6:53 AM EDTSpecial Weather StatementOKX52 min
Aug 18, 7:26 AM EDTAreal Flood AdvisoryOKX3 hr
Aug 18, 1:06 PM EDTFlash Flood WatchOKX8 hr
Aug 18, 1:54 PM EDTMesoscale DiscussionSPC2 hr
Aug 18, 2:27 PM EDTSevere Thunderstorm WatchSPC9 hr
Aug 18, 4:34 PM EDTMesoscale DiscussionSPC86 min
Aug 21, 3:43 PM EDTHeat AdvisoryOKX26 hr
Aug 22, 3:08 PM EDTMesoscale DiscussionSPC67 min
Aug 22, 4:19 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 22, 7:07 PM EDTMesoscale DiscussionSPC113 min
Aug 22, 10:14 PM EDTSpecial Weather StatementOKX46 min
Aug 22, 10:53 PM EDTMesoscale DiscussionSPC97 min
Sep 5, 6:27 PM EDTSpecial Weather StatementOKX63 min
Sep 5, 7:24 PM EDTSpecial Weather StatementOKX51 min
Sep 5, 7:49 PM EDTSpecial Weather StatementOKX41 min
Sep 16, 11:38 PM EDTDense Fog AdvisoryOKX9 hr
Oct 24, 11:59 AM EDTSpecial Weather StatementOKX46 min
Oct 24, 1:15 PM EDTSpecial Weather StatementOKX60 min
Oct 28, 3:37 AM EDTFlash Flood WatchOKX49 hr
Oct 28, 3:18 PM EDTHigh Wind WarningOKX37 hr
Oct 29, 12:59 PM EDTAreal Flood AdvisoryOKX2 hr
Oct 29, 2:55 PM EDTAreal Flood AdvisoryOKX3 hr
Oct 29, 3:51 PM EDTWind AdvisoryOKX20 hr
Oct 29, 3:55 PM EDTAreal Flood AdvisoryOKX3 hr
Oct 29, 4:14 PM EDTAreal Flood WarningOKX2 hr
Oct 29, 5:55 PM EDTAreal Flood WarningOKX8 hr
Oct 29, 11:34 PM EDTRiver Flood WarningOKX17 hr
Oct 31, 3:42 PM EDTFrost AdvisoryOKX17 hr
Nov 9, 3:27 AM ESTFreeze WatchOKX12 hr
Nov 9, 3:51 PM ESTFreeze WarningOKX42 hr
Nov 18, 3:39 AM ESTWind AdvisoryOKX38 hr
Nov 19, 4:13 AM ESTSpecial Weather StatementOKX47 min
Dec 8, 3:31 AM ESTWinter Weather AdvisoryOKX46 hr
Dec 17, 3:28 PM ESTWinter Weather AdvisoryOKX17 hr
Dec 24, 2:42 AM ESTWind AdvisoryOKX37 hr
Dec 24, 2:42 AM ESTWinter Weather AdvisoryOKX34 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 archive20162018

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.