Alert archive / New Jersey / Warren County
Weather alerts in Warren County, New Jersey, 2015
156 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Warren County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 156
- Warnings
- 33
- Watches
- 25
- Advisories
- 52
- Busiest month
- June37 alerts
- Busiest day
- June 30, 201512 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Warren County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 10 | 41% | 6 | 67% | 32 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 10 | 1 | 90% | 3 | 33% | 11 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 120 | 60 | 50% | 230 | 84% | 24 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 54 | 27 | 50% | 62 | 68% | 48 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, 3:28 PM EST | Winter Weather Advisory | PHI | 30 hr |
| Jan 6, 3:34 PM EST | Wind Chill Advisory | PHI | 45 hr |
| Jan 7, 12:04 PM EST | Special Weather Statement | PHI | 86 min |
| Jan 7, 12:43 PM EST | Special Weather Statement | PHI | 47 min |
| Jan 7, 1:26 PM EST | Special Weather Statement | PHI | 34 min |
| Jan 7, 1:57 PM EST | Special Weather Statement | PHI | 48 min |
| Jan 11, 3:55 AM EST | Winter Weather Advisory | PHI | 33 hr |
| Jan 18, 6:58 AM EST | Freezing Rain Advisory | PHI | 6 hr |
| Jan 23, 4:12 AM EST | Winter Weather Advisory | PHI | 28 hr |
| Jan 23, 11:48 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 24, 3:47 AM EST | Winter Storm Warning | PHI | 9 hr |
| Jan 25, 3:40 AM EST | Winter Storm Watch | PHI | 24 hr |
| Jan 25, 4:08 PM EST | Winter Storm Warning | PHI | 46 hr |
| Jan 27, 11:53 AM EST | Winter Weather Advisory | PHI | 113 min |
| Jan 30, 3:35 AM EST | Wind Advisory | PHI | 26 hr |
| Jan 31, 4:05 AM EST | Winter Storm Watch | PHI | 24 hr |
| Jan 31, 3:58 PM EST | Winter Storm Warning | PHI | 46 hr |
| Feb 1, 4:33 AM EST | Winter Weather Advisory | PHI | 52 hr |
| Feb 8, 4:42 AM EST | Winter Weather Advisory | PHI | 53 hr |
| Feb 12, 3:54 AM EST | Wind Chill Advisory | PHI | 32 hr |
| Feb 12, 6:33 PM EST | Special Weather Statement | PHI | 57 min |
| Feb 13, 4:16 AM EST | High Wind Watch | PHI | 23 hr |
| Feb 13, 4:15 PM EST | Winter Weather Advisory | PHI | 42 hr |
| Feb 14, 3:40 AM EST | Wind Chill Advisory | PHI | 55 hr |
| Feb 14, 3:43 AM EST | High Wind Warning | PHI | 32 hr |
| Feb 14, 8:04 PM EST | Special Weather Statement | PHI | 86 min |
| Feb 15, 10:14 AM EST | Wind Advisory | PHI | 5 hr |
| Feb 18, 3:53 AM EST | Wind Chill Watch | PHI | 24 hr |
| Feb 18, 3:53 AM EST | Wind Chill Advisory | PHI | 60 hr |
| Feb 20, 3:30 PM EST | Winter Storm Watch | PHI | 13 hr |
| Feb 21, 4:37 AM EST | Winter Storm Warning | PHI | 28 hr |
| Feb 21, 6:24 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 28, 3:19 PM EST | Winter Weather Advisory | PHI | 41 hr |
| Mar 1, 1:57 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 2, 4:00 PM EST | Winter Weather Advisory | PHI | 41 hr |
| Mar 3, 3:04 PM EST | Winter Storm Watch | PHI | 25 hr |
| Mar 3, 7:01 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 4, 3:47 AM EST | Winter Storm Warning | PHI | 41 hr |
| Mar 4, 3:42 PM EST | Winter Weather Advisory | PHI | 24 hr |
| Mar 8, 9:31 PM EDT | Winter Weather Advisory | PHI | 11 hr |
| Mar 10, 6:12 PM EDT | Dense Fog Advisory | PHI | 11 hr |
| Mar 19, 3:32 AM EDT | Winter Weather Advisory | PHI | 51 hr |
| Apr 15, 9:32 AM EDT | Red Flag Warning | PHI | 9 hr |
| Apr 17, 3:58 PM EDT | Fire Weather Watch | PHI | 11 hr |
| Apr 18, 3:12 AM EDT | Red Flag Warning | PHI | 17 hr |
| Apr 20, 7:56 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 20, 10:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 22, 12:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Apr 22, 1:33 PM EDT | Special Weather Statement | PHI | 57 min |
| Apr 22, 2:22 PM EDT | Special Weather Statement | PHI | 113 min |
| Apr 23, 4:04 AM EDT | Freeze Watch | PHI | 35 hr |
| Apr 23, 4:04 AM EDT | Freeze Warning | PHI | 27 hr |
| Apr 24, 3:28 PM EDT | Freeze Warning | PHI | 17 hr |
| Apr 25, 3:34 PM EDT | Frost Advisory | PHI | 16 hr |
| May 3, 3:44 PM EDT | Fire Weather Watch | PHI | 12 hr |
| May 4, 3:43 AM EDT | Red Flag Warning | PHI | 16 hr |
| May 12, 3:24 PM EDT | Fire Weather Watch | PHI | 12 hr |
| May 13, 3:34 AM EDT | Red Flag Warning | PHI | 14 hr |
| May 16, 1:35 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | 49 min |
| May 16, 6:03 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 16, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | 50 min |
| May 16, 6:55 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 16, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | 26 min |
| May 16, 8:25 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 27, 12:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 12:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 2:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 4:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| May 28, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 31, 1:00 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| May 31, 1:11 PM EDT | Flash Flood Watch | PHI | 13 hr |
| May 31, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| May 31, 7:57 PM EDT | Areal Flood Advisory | PHI | 6 hr |
| Jun 1, 1:57 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 8, 3:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 8, 4:13 PM EDT | Tornado Watch | SPC | 4 hr |
| Jun 8, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | 59 min |
| Jun 11, 2:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 11, 7:08 PM EDT | Special Weather Statement | PHI | 52 min |
| Jun 12, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | 49 min |
| Jun 12, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | 28 min |
| Jun 12, 6:23 PM EDT | Severe Thunderstorm Warning | PHI | 67 min |
| Jun 12, 7:27 PM EDT | Severe Thunderstorm Warning | PHI | 33 min |
| Jun 14, 7:08 PM EDT | Mesoscale Discussion | SPC | 52 min |
| Jun 14, 8:33 PM EDT | Special Weather Statement | PHI | 27 min |
| Jun 14, 8:55 PM EDT | Special Weather Statement | PHI | 50 min |
| Jun 14, 10:23 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 15, 6:50 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 16, 1:27 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 19, 2:18 PM EDT | Flood Watch | PHI | 40 hr |
| Jun 23, 10:20 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 11:13 AM EDT | Special Weather Statement | PHI | 32 min |
| Jun 23, 2:29 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jun 23, 4:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 23, 6:02 PM EDT | Special Weather Statement | PHI | 43 min |
| Jun 23, 6:18 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 23, 7:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 30, 12:31 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 30, 3:00 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 30, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | 60 min |
| Jun 30, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | 43 min |
| Jun 30, 3:54 PM EDT | Flash Flood Watch | PHI | 13 hr |
| Jun 30, 4:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 6:20 PM EDT | Special Weather Statement | PHI | 25 min |
| Jun 30, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jun 30, 7:13 PM EDT | Severe Thunderstorm Warning | PHI | 62 min |
| Jun 30, 7:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 30, 8:26 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 6, 8:52 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 7, 3:26 PM EDT | Special Weather Statement | PHI | 64 min |
| Jul 7, 3:49 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 7, 4:51 PM EDT | Special Weather Statement | PHI | 39 min |
| Jul 8, 1:17 PM EDT | Special Weather Statement | PHI | 28 min |
| Jul 8, 1:32 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 8, 3:42 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 9, 3:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 9, 4:57 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 9, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jul 15, 6:51 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 15, 7:22 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 18, 12:44 PM EDT | Heat Advisory | PHI | 55 hr |
| Jul 26, 10:02 PM EDT | Flash Flood Warning | PHI | 7 hr |
| Jul 26, 10:43 PM EDT | Special Weather Statement | PHI | 92 min |
| Jul 26, 11:05 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 30, 2:26 PM EDT | Special Weather Statement | PHI | 79 min |
| Jul 30, 2:34 PM EDT | Areal Flood Advisory | PHI | 116 min |
| Aug 4, 2:30 AM EDT | Special Weather Statement | PHI | 60 min |
| Aug 11, 4:48 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 16, 2:43 PM EDT | Areal Flood Advisory | PHI | 62 min |
| Aug 17, 7:37 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 19, 5:57 PM EDT | Special Weather Statement | PHI | 63 min |
| Aug 20, 2:46 PM EDT | Flash Flood Watch | PHI | 13 hr |
| Aug 24, 9:27 PM EDT | Special Weather Statement | PHI | 48 min |
| Aug 24, 9:36 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 10, 4:14 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Oct 9, 2:45 PM EDT | Special Weather Statement | PHI | 90 min |
| Oct 9, 3:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 9, 3:17 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| Oct 9, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Oct 9, 4:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Oct 16, 3:12 PM EDT | Freeze Watch | PHI | 12 hr |
| Oct 16, 3:12 PM EDT | Freeze Watch | PHI | 24 hr |
| Oct 17, 3:37 AM EDT | Freeze Warning | PHI | 29 hr |
| Oct 17, 2:48 PM EDT | Freeze Warning | PHI | 42 hr |
| Oct 28, 9:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Dec 13, 9:46 PM EST | Dense Fog Advisory | PHI | 12 hr |
| Dec 22, 11:26 PM EST | Dense Fog Advisory | PHI | 16 hr |
| Dec 26, 12:22 AM EST | Dense Fog Advisory | PHI | 3 hr |
| Dec 27, 3:00 AM EST | Dense Fog Advisory | PHI | 6 hr |
| Dec 27, 3:23 PM EST | Winter Weather Advisory | PHI | 44 hr |
| Dec 30, 1:18 AM EST | Dense Fog Advisory | PHI | 9 hr |
| Dec 30, 4:51 PM EST | Dense Fog Advisory | PHI | 11 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 archive20142016
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.