Alert archive / New Jersey / Union County
Weather alerts in Union County, New Jersey, 2010
121 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Union County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 121
- Warnings
- 18
- Watches
- 14
- Advisories
- 26
- Busiest month
- July23 alerts
- Busiest day
- September 13, 20106 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Union County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 4 | 50% | 2 | 50% | 45 min |
| Flash flood warnings | 1 | 1 | 0% | 3 | 67% | 34 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS New York, NY: tornado warnings | 11 | 3 | 73% | 4 | 75% | 9 min |
| NWS New York, NY: severe thunderstorm warnings | 101 | 66 | 35% | 244 | 64% | 22 min |
| NWS New York, NY: flash flood warnings | 13 | 10 | 23% | 51 | 51% | 65 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 25, 9:12 AM EST | Areal Flood Advisory | OKX | 48 min |
| Jan 25, 12:29 PM EST | Areal Flood Advisory | OKX | 6 hr |
| Feb 10, 7:27 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 10, 12:20 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 6:45 PM EST | Areal Flood Advisory | OKX | 105 min |
| Feb 26, 12:44 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 13, 2:23 PM EST | Areal Flood Advisory | OKX | 11 hr |
| Mar 13, 6:47 PM EST | Areal Flood Warning | OKX | 7 hr |
| Mar 14, 1:42 AM EST | Areal Flood Warning | OKX | 9 hr |
| Mar 22, 11:57 PM EDT | Areal Flood Advisory | OKX | 3 hr |
| Mar 23, 2:17 AM EDT | Areal Flood Warning | OKX | 105 min |
| Mar 29, 2:27 AM EDT | Areal Flood Advisory | OKX | 108 min |
| Mar 29, 4:18 AM EDT | Areal Flood Warning | OKX | 117 min |
| Mar 29, 5:59 AM EDT | Areal Flood Warning | OKX | 2 hr |
| Mar 29, 8:14 AM EDT | Areal Flood Advisory | OKX | 106 min |
| Mar 30, 6:34 AM EDT | Areal Flood Advisory | OKX | 6 hr |
| Mar 30, 11:50 AM EDT | Areal Flood Warning | OKX | 6 hr |
| Mar 30, 5:45 PM EDT | Areal Flood Warning | OKX | 4 hr |
| May 3, 6:58 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| May 14, 3:43 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 31, 5:22 PM EDT | Special Weather Statement | OKX | 53 min |
| Jun 1, 3:39 PM EDT | Special Weather Statement | OKX | 36 min |
| Jun 3, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 6, 10:25 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 6, 11:08 AM EDT | Tornado Watch | SPC | 8 hr |
| Jun 6, 2:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 6, 4:02 PM EDT | Special Weather Statement | OKX | 28 min |
| Jun 10, 2:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 10, 3:03 PM EDT | Special Weather Statement | OKX | 42 min |
| Jun 24, 12:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 24, 12:28 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 2:12 PM EDT | Severe Thunderstorm Warning | OKX | 33 min |
| Jun 24, 3:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 28, 12:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 28, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 28, 3:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 10:08 AM EDT | Areal Flood Advisory | OKX | 98 min |
| Jul 13, 10:39 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 13, 11:28 AM EDT | Areal Flood Advisory | OKX | 3 hr |
| Jul 14, 10:17 AM EDT | Areal Flood Advisory | OKX | 118 min |
| Jul 14, 3:01 PM EDT | Areal Flood Advisory | OKX | 100 min |
| Jul 19, 7:43 AM EDT | Special Weather Statement | OKX | 47 min |
| Jul 19, 1:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 19, 7:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 19, 8:57 PM EDT | Special Weather Statement | OKX | 63 min |
| Jul 21, 12:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 21, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 3:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 21, 7:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 23, 5:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 23, 5:55 PM EDT | Tornado Watch | SPC | 4 hr |
| Jul 23, 8:05 PM EDT | Areal Flood Advisory | OKX | 55 min |
| Jul 24, 8:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 25, 11:29 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 25, 12:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 25, 2:20 PM EDT | Special Weather Statement | OKX | 55 min |
| Jul 25, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 29, 7:02 AM EDT | Special Weather Statement | OKX | 58 min |
| Jul 29, 1:47 PM EDT | Special Weather Statement | OKX | 58 min |
| Aug 1, 9:11 AM EDT | Special Weather Statement | OKX | 64 min |
| Aug 1, 9:17 AM EDT | Areal Flood Advisory | OKX | 88 min |
| Aug 1, 9:24 AM EDT | Flash Flood Warning | OKX | 111 min |
| Aug 1, 9:53 AM EDT | Special Weather Statement | OKX | 67 min |
| Aug 5, 4:44 AM EDT | Special Weather Statement | OKX | 31 min |
| Aug 16, 2:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 16, 5:38 PM EDT | Special Weather Statement | OKX | 37 min |
| Aug 16, 5:57 PM EDT | Severe Thunderstorm Warning | OKX | 38 min |
| Aug 16, 7:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Aug 22, 3:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Aug 22, 4:26 PM EDT | Areal Flood Advisory | OKX | 109 min |
| Aug 22, 6:42 PM EDT | Areal Flood Advisory | OKX | 108 min |
| Aug 22, 8:22 PM EDT | Areal Flood Advisory | OKX | 83 min |
| Sep 13, 12:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Sep 13, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 13, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Sep 13, 4:59 PM EDT | Severe Thunderstorm Warning | OKX | 46 min |
| Sep 13, 5:58 PM EDT | Special Weather Statement | OKX | 62 min |
| Sep 13, 6:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Sep 16, 4:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Sep 16, 5:09 PM EDT | Areal Flood Advisory | OKX | 51 min |
| Sep 22, 3:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 22, 3:43 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 22, 6:43 PM EDT | Special Weather Statement | OKX | 62 min |
| Sep 22, 7:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Sep 22, 7:58 PM EDT | Severe Thunderstorm Warning | OKX | 47 min |
| Sep 28, 8:00 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 28, 10:58 AM EDT | Tornado Watch | SPC | 7 hr |
| Sep 28, 1:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Sep 28, 4:57 PM EDT | Special Weather Statement | OKX | 63 min |
| Sep 30, 5:50 AM EDT | Areal Flood Advisory | OKX | 2 hr |
| Sep 30, 10:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 30, 8:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Oct 1, 12:01 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 1, 2:04 AM EDT | Mesoscale Discussion | SPC | 26 min |
| Oct 1, 3:37 AM EDT | Areal Flood Advisory | OKX | 4 hr |
| Oct 1, 5:25 AM EDT | Areal Flood Warning | OKX | 5 hr |
| Oct 11, 3:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Oct 11, 3:38 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 11, 6:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Oct 11, 7:18 PM EDT | Special Weather Statement | OKX | 42 min |
| Oct 11, 8:09 PM EDT | Severe Thunderstorm Warning | OKX | 51 min |
| Oct 11, 8:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Oct 11, 8:23 PM EDT | Special Weather Statement | PHI | 67 min |
| Oct 14, 5:46 PM EDT | Areal Flood Advisory | OKX | 119 min |
| Nov 17, 3:38 AM EST | Severe Thunderstorm Watch | SPC | 2 hr |
| Nov 17, 3:44 AM EST | Severe Thunderstorm Warning | OKX | 61 min |
| Dec 1, 9:04 AM EST | Special Weather Statement | OKX | 56 min |
| Dec 1, 9:31 AM EST | Special Weather Statement | PHI | 59 min |
| Dec 1, 10:17 AM EST | Areal Flood Advisory | OKX | 3 hr |
| Dec 1, 12:47 PM EST | Severe Thunderstorm Warning | OKX | 58 min |
| Dec 1, 1:03 PM EST | Areal Flood Advisory | OKX | 3 hr |
| Dec 1, 1:45 PM EST | Severe Thunderstorm Warning | OKX | 45 min |
| Dec 25, 3:58 AM EST | Winter Storm Watch | OKX | 12 hr |
| Dec 25, 3:55 PM EST | Blizzard Warning | OKX | 43 hr |
| Dec 26, 6:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 12:31 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 2:01 PM EST | Coastal Flood Advisory | OKX | 15 hr |
| Dec 26, 6:26 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 12:24 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 2:49 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 27, 10:39 AM EST | Winter Weather Advisory | OKX | 22 hr |
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 | 8 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 43 |
| Special Weather Statement | 20 |
| Flooding | |
| Areal Flood Warning | 8 |
| Flash Flood Warning | 1 |
| Areal Flood Advisory | 24 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.