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
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 5 | 29% | 8 | 38% | 28 min |
| Flash flood warnings | 3 | 2 | 33% | 2 | 100% | 35 min |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New York, NY: tornado warnings | 1 | 0 | 100% | 0 | ||
| NWS New York, NY: severe thunderstorm warnings | 41 | 31 | 24% | 97 | 65% | 23 min |
| NWS New York, NY: flash flood warnings | 21 | 13 | 38% | 48 | 54% | 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 3:41 AM EST | Winter Weather Advisory | OKX | 5 hr |
| Jan 2, 9:05 AM EST | Freezing Rain Advisory | OKX | 55 min |
| Jan 5, 3:14 PM EST | Winter Weather Advisory | OKX | 19 hr |
| Jan 7, 3:49 AM EST | Winter Weather Advisory | OKX | 17 hr |
| Jan 21, 5:20 AM EST | High Wind Watch | OKX | 281 days |
| Jan 21, 6:52 PM EST | Dense Fog Advisory | OKX | 10 hr |
| Jan 22, 11:23 AM EST | Wind Advisory | OKX | 43 hr |
| Jan 22, 3:49 PM EST | Flood Watch | OKX | 32 hr |
| Jan 30, 4:00 PM EST | Winter Weather Advisory | OKX | 27 hr |
| Feb 7, 3:22 PM EST | Winter Storm Watch | OKX | 12 hr |
| Feb 8, 3:42 AM EST | Winter Storm Warning | OKX | 38 hr |
| Feb 9, 4:55 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 9, 9:21 AM EST | Special Weather Statement | OKX | 84 min |
| Feb 11, 3:43 AM EST | Winter Weather Advisory | OKX | 45 hr |
| Feb 12, 4:15 AM EST | High Wind Watch | OKX | 11 hr |
| Feb 12, 10:36 AM EST | Mesoscale Discussion | SPC | 24 min |
| Feb 12, 12:02 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 12, 3:35 PM EST | Wind Advisory | OKX | 26 hr |
| Feb 25, 2:46 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Feb 25, 4:44 PM EST | Mesoscale Discussion | SPC | 91 min |
| Feb 25, 4:50 PM EST | Special Weather Statement | OKX | 115 min |
| Feb 25, 6:10 PM EST | Severe Thunderstorm Warning | OKX | 50 min |
| Feb 25, 6:37 PM EST | Special Weather Statement | OKX | 38 min |
| Mar 1, 3:45 AM EST | Wind Advisory | OKX | 23 hr |
| Mar 2, 3:14 AM EST | High Wind Warning | OKX | 10 hr |
| Mar 2, 12:52 PM EST | Wind Advisory | OKX | 5 hr |
| Mar 9, 3:27 AM EST | Winter Weather Advisory | OKX | 37 hr |
| Mar 10, 8:18 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 11, 3:38 PM EST | Blizzard Watch | OKX | 36 hr |
| Mar 11, 3:38 PM EST | Winter Storm Watch | OKX | 24 hr |
| Mar 12, 4:12 PM EDT | Winter Storm Warning | OKX | 40 hr |
| Mar 13, 4:18 AM EDT | Blizzard Warning | OKX | 35 hr |
| Mar 14, 3:22 AM EDT | Mesoscale Discussion | SPC | 5 hr |
| Mar 14, 7:59 AM EDT | Winter Storm Warning | OKX | 7 hr |
| Mar 14, 8:55 AM EDT | Wind Advisory | OKX | 9 hr |
| Mar 14, 9:04 AM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 22, 4:08 AM EDT | Wind Advisory | OKX | 14 hr |
| Apr 2, 3:48 PM EDT | Flood Watch | OKX | 36 hr |
| Apr 4, 3:27 PM EDT | Flood Watch | OKX | 50 hr |
| Apr 6, 2:35 PM EDT | Areal Flood Advisory | OKX | 115 min |
| Apr 21, 12:21 AM EDT | Special Weather Statement | OKX | 24 min |
| Apr 25, 9:11 PM EDT | Areal Flood Advisory | OKX | 64 min |
| May 1, 7:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 12:09 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| May 5, 12:28 PM EDT | Flash Flood Warning | OKX | 4 hr |
| May 6, 7:41 PM EDT | Special Weather Statement | OKX | 49 min |
| May 14, 4:54 PM EDT | Severe Thunderstorm Warning | OKX | 42 min |
| May 15, 10:10 AM EDT | Wind Advisory | OKX | 5 hr |
| May 19, 3:07 PM EDT | Special Weather Statement | OKX | 38 min |
| May 19, 3:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 31, 9:31 PM EDT | Special Weather Statement | OKX | 44 min |
| Jun 13, 2:25 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 13, 7:44 PM EDT | Severe Thunderstorm Warning | OKX | 41 min |
| Jun 16, 5:24 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jun 17, 11:35 AM EDT | Areal Flood Advisory | OKX | 115 min |
| Jun 17, 12:26 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jun 18, 3:48 AM EDT | Flash Flood Watch | OKX | 40 hr |
| Jun 19, 11:13 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 19, 2:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 19, 4:35 PM EDT | Severe Thunderstorm Warning | OKX | 55 min |
| Jun 19, 4:53 PM EDT | Flash Flood Warning | OKX | 3 hr |
| Jun 19, 5:01 PM EDT | Severe Thunderstorm Warning | OKX | 44 min |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 21, 4:20 PM EDT | Special Weather Statement | OKX | 40 min |
| Jun 23, 5:09 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 24, 3:59 AM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jun 24, 5:57 AM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jun 24, 6:54 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 30, 6:08 PM EDT | Special Weather Statement | OKX | 52 min |
| Jul 1, 1:19 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 1, 6:55 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 7, 7:55 AM EDT | Areal Flood Advisory | OKX | 4 hr |
| Jul 7, 8:58 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 7, 10:16 AM EDT | Areal Flood Warning | OKX | 6 hr |
| Jul 7, 3:59 PM EDT | Areal Flood Warning | OKX | 2 hr |
| Jul 12, 12:35 PM EDT | Heat Advisory | OKX | 29 hr |
| Jul 13, 11:09 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 1:11 PM EDT | Flash Flood Watch | OKX | 6 hr |
| Jul 13, 1:57 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 13, 4:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 14, 8:29 AM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jul 17, 6:17 PM EDT | Areal Flood Advisory | OKX | 118 min |
| Jul 17, 6:45 PM EDT | Flash Flood Warning | OKX | 3 hr |
| Jul 19, 3:17 AM EDT | Heat Advisory | OKX | 63 hr |
| Jul 20, 4:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 20, 5:03 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 20, 7:01 PM EDT | Special Weather Statement | OKX | 44 min |
| Jul 20, 7:25 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Jul 20, 7:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 21, 3:36 PM EDT | Heat Advisory | OKX | 26 hr |
| Jul 23, 3:41 PM EDT | Flash Flood Watch | OKX | 15 hr |
| Aug 2, 12:16 PM EDT | Special Weather Statement | OKX | 29 min |
| Aug 2, 12:32 PM EDT | Severe Thunderstorm Warning | OKX | 43 min |
| Aug 2, 12:49 PM EDT | Areal Flood Advisory | OKX | 56 min |
| Aug 2, 1:20 PM EDT | Severe Thunderstorm Warning | OKX | 55 min |
| Aug 2, 1:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 3:10 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Aug 2, 5:14 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Aug 5, 4:24 AM EDT | Special Weather Statement | OKX | 66 min |
| Aug 5, 4:37 AM EDT | Areal Flood Advisory | OKX | 113 min |
| Aug 7, 3:00 AM EDT | Flash Flood Watch | OKX | 15 hr |
| Aug 18, 6:11 AM EDT | Special Weather Statement | OKX | 49 min |
| Aug 18, 6:53 AM EDT | Special Weather Statement | OKX | 52 min |
| Aug 18, 7:26 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Aug 18, 1:06 PM EDT | Flash Flood Watch | OKX | 8 hr |
| Aug 18, 1:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 18, 4:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 21, 3:43 PM EDT | Heat Advisory | OKX | 26 hr |
| Aug 22, 3:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Aug 22, 4:19 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 22, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 22, 10:14 PM EDT | Special Weather Statement | OKX | 46 min |
| Aug 22, 10:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 5, 6:27 PM EDT | Special Weather Statement | OKX | 63 min |
| Sep 5, 7:24 PM EDT | Special Weather Statement | OKX | 51 min |
| Sep 5, 7:49 PM EDT | Special Weather Statement | OKX | 41 min |
| Sep 16, 11:38 PM EDT | Dense Fog Advisory | OKX | 9 hr |
| Oct 24, 11:59 AM EDT | Special Weather Statement | OKX | 46 min |
| Oct 24, 1:15 PM EDT | Special Weather Statement | OKX | 60 min |
| Oct 28, 3:37 AM EDT | Flash Flood Watch | OKX | 49 hr |
| Oct 28, 3:18 PM EDT | High Wind Warning | OKX | 37 hr |
| Oct 29, 12:59 PM EDT | Areal Flood Advisory | OKX | 2 hr |
| Oct 29, 2:55 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Oct 29, 3:51 PM EDT | Wind Advisory | OKX | 20 hr |
| Oct 29, 3:55 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Oct 29, 4:14 PM EDT | Areal Flood Warning | OKX | 2 hr |
| Oct 29, 5:55 PM EDT | Areal Flood Warning | OKX | 8 hr |
| Oct 29, 11:34 PM EDT | River Flood Warning | OKX | 17 hr |
| Oct 31, 3:42 PM EDT | Frost Advisory | OKX | 17 hr |
| Nov 9, 3:27 AM EST | Freeze Watch | OKX | 12 hr |
| Nov 9, 3:51 PM EST | Freeze Warning | OKX | 42 hr |
| Nov 18, 3:39 AM EST | Wind Advisory | OKX | 38 hr |
| Nov 19, 4:13 AM EST | Special Weather Statement | OKX | 47 min |
| Dec 8, 3:31 AM EST | Winter Weather Advisory | OKX | 46 hr |
| Dec 17, 3:28 PM EST | Winter Weather Advisory | OKX | 17 hr |
| Dec 24, 2:42 AM EST | Wind Advisory | OKX | 37 hr |
| Dec 24, 2:42 AM EST | Winter Weather Advisory | OKX | 34 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.