Alert archive / New Jersey / Salem County
Weather alerts in Salem County, New Jersey, 2013
188 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Salem County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 188
- Warnings
- 36
- Watches
- 26
- Advisories
- 55
- Busiest month
- June60 alerts
- Busiest day
- August 13, 201312 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Salem County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 12 | 25% | 2 | 100% | 10 min |
| Flash flood warnings | 10 | 6 | 40% | 2 | 50% | 78 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 5 | 1 | 80% | 2 | 50% | 1 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 127 | 69 | 46% | 212 | 73% | 24 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 70 | 38 | 46% | 112 | 76% | 71 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 12, 2:54 PM EST | Dense Fog Advisory | PHI | 22 hr |
| Jan 13, 3:30 PM EST | Dense Fog Advisory | PHI | 19 hr |
| Jan 24, 3:43 PM EST | Winter Weather Advisory | PHI | 30 hr |
| Jan 27, 3:40 PM EST | Winter Weather Advisory | PHI | 30 hr |
| Jan 29, 2:51 PM EST | Flash Flood Watch | PHI | 39 hr |
| Jan 30, 4:02 AM EST | Dense Fog Advisory | PHI | 8 hr |
| Jan 30, 4:02 AM EST | High Wind Warning | PHI | 26 hr |
| Jan 30, 5:00 PM EST | Special Weather Statement | PHI | 2 hr |
| Jan 30, 9:06 PM EST | Mesoscale Discussion | SPC | 54 min |
| Jan 30, 9:12 PM EST | Special Weather Statement | PHI | 2 hr |
| Jan 31, 1:34 AM EST | Special Weather Statement | PHI | 116 min |
| Jan 31, 1:48 AM EST | Mesoscale Discussion | SPC | 57 min |
| Jan 31, 2:56 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Jan 31, 3:12 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Jan 31, 6:01 AM EST | Wind Advisory | PHI | 12 hr |
| Feb 5, 11:46 PM EST | Freezing Rain Advisory | PHI | 3 hr |
| Feb 7, 3:20 PM EST | Winter Weather Advisory | PHI | 36 hr |
| Feb 8, 1:35 PM EST | Areal Flood Advisory | PHI | 4 hr |
| Feb 13, 3:12 AM EST | Winter Weather Advisory | PHI | 24 hr |
| Feb 26, 11:19 AM EST | Coastal Flood Advisory | PHI | 15 hr |
| Mar 4, 2:51 PM EST | Winter Storm Watch | PHI | 38 hr |
| Mar 5, 3:27 PM EST | Winter Weather Advisory | PHI | 32 hr |
| Mar 5, 3:30 PM EST | Wind Advisory | PHI | 30 hr |
| Mar 6, 2:02 PM EST | Coastal Flood Advisory | PHI | 7 hr |
| Mar 10, 1:25 AM EST | Coastal Flood Advisory | PHI | 27 hr |
| Mar 11, 5:14 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Mar 12, 5:26 AM EDT | Coastal Flood Advisory | PHI | 11 hr |
| Mar 24, 3:44 PM EDT | Winter Storm Warning | PHI | 24 hr |
| Mar 24, 3:44 PM EDT | Winter Weather Advisory | PHI | 29 hr |
| Mar 25, 5:31 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 2, 3:33 PM EDT | Fire Weather Watch | PHI | 12 hr |
| Apr 3, 3:44 AM EDT | Red Flag Warning | PHI | 18 hr |
| Apr 10, 10:10 PM EDT | Special Weather Statement | PHI | 2 hr |
| Apr 12, 7:37 AM EDT | Special Weather Statement | PHI | 53 min |
| Apr 12, 8:33 AM EDT | Special Weather Statement | PHI | 57 min |
| Apr 19, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 19, 8:09 PM EDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Apr 19, 8:48 PM EDT | Special Weather Statement | PHI | 3 hr |
| Apr 19, 9:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 20, 6:09 PM EDT | Frost Advisory | PHI | 12 hr |
| Apr 21, 3:19 PM EDT | Frost Advisory | PHI | 17 hr |
| Apr 26, 3:40 PM EDT | Frost Advisory | PHI | 12 hr |
| May 11, 1:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 11, 3:37 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 20, 2:20 AM EDT | Dense Fog Advisory | PHI | 6 hr |
| Jun 2, 3:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 9:03 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Jun 6, 3:10 PM EDT | Flash Flood Watch | PHI | 36 hr |
| Jun 7, 1:40 PM EDT | Areal Flood Advisory | PHI | 6 hr |
| Jun 7, 4:37 PM EDT | Special Weather Statement | PHI | 53 min |
| Jun 7, 6:28 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 7, 11:02 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 8, 1:54 AM EDT | Areal Flood Warning | PHI | 12 hr |
| Jun 10, 3:30 AM EDT | Flood Watch | PHI | 24 hr |
| Jun 10, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 2:02 PM EDT | Tornado Watch | SPC | 10 hr |
| Jun 10, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 10, 5:38 PM EDT | Areal Flood Advisory | PHI | 52 min |
| Jun 10, 8:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 10, 10:49 PM EDT | Areal Flood Advisory | PHI | 116 min |
| Jun 12, 3:58 AM EDT | Flood Watch | PHI | 36 hr |
| Jun 13, 2:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 7:30 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 8:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 13, 9:18 AM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Jun 13, 10:03 AM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Jun 13, 5:27 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 13, 5:47 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| Jun 16, 6:24 PM EDT | Special Weather Statement | PHI | 66 min |
| Jun 17, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | 69 min |
| Jun 17, 5:55 PM EDT | Special Weather Statement | PHI | 65 min |
| Jun 17, 6:05 PM EDT | Special Weather Statement | PHI | 55 min |
| Jun 17, 6:29 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jun 17, 6:38 PM EDT | Severe Thunderstorm Warning | PHI | 67 min |
| Jun 17, 6:58 PM EDT | Special Weather Statement | PHI | 92 min |
| Jun 17, 8:16 PM EDT | Special Weather Statement | PHI | 119 min |
| Jun 17, 8:28 PM EDT | Areal Flood Advisory | PHI | 107 min |
| Jun 17, 9:51 PM EDT | Special Weather Statement | PHI | 114 min |
| Jun 18, 1:32 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 18, 1:53 PM EDT | Special Weather Statement | PHI | 82 min |
| Jun 18, 2:10 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 24, 1:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 24, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 3:25 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 25, 4:37 PM EDT | Special Weather Statement | PHI | 53 min |
| Jun 25, 5:25 PM EDT | Special Weather Statement | PHI | 65 min |
| Jun 25, 8:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 25, 8:46 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 25, 10:47 PM EDT | Special Weather Statement | PHI | 58 min |
| Jun 25, 11:22 PM EDT | Special Weather Statement | PHI | 53 min |
| Jun 26, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 27, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 27, 1:58 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 27, 3:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 27, 4:04 PM EDT | Special Weather Statement | PHI | 56 min |
| Jun 27, 4:51 PM EDT | Special Weather Statement | PHI | 114 min |
| Jun 28, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 3:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 5:49 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 28, 6:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 29, 3:34 PM EDT | Flash Flood Watch | PHI | 3 days |
| Jun 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 1:28 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 1, 7:09 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 1, 12:36 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 2, 4:36 PM EDT | Special Weather Statement | PHI | 84 min |
| Jul 2, 5:24 PM EDT | Special Weather Statement | PHI | 66 min |
| Jul 2, 6:38 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 7, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 7, 6:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 7, 7:27 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jul 10, 12:52 PM EDT | Special Weather Statement | PHI | 83 min |
| Jul 12, 4:08 AM EDT | Flash Flood Watch | PHI | 17 hr |
| Jul 12, 4:00 PM EDT | Areal Flood Advisory | PHI | 7 hr |
| Jul 17, 3:27 PM EDT | Heat Advisory | PHI | 3 days |
| Jul 20, 1:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 20, 7:54 PM EDT | Special Weather Statement | PHI | 66 min |
| Jul 21, 3:44 PM EDT | Special Weather Statement | PHI | 2 hr |
| Jul 22, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 23, 3:49 AM EDT | Flash Flood Watch | PHI | 11 hr |
| Jul 23, 4:10 PM EDT | Special Weather Statement | PHI | 2 hr |
| Jul 28, 1:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 28, 3:22 PM EDT | Areal Flood Advisory | PHI | 113 min |
| Jul 28, 3:46 PM EDT | Flash Flood Warning | PHI | 7 hr |
| Jul 28, 5:58 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jul 28, 6:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 28, 8:25 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 28, 8:38 PM EDT | Special Weather Statement | PHI | 52 min |
| Jul 28, 9:04 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 28, 9:19 PM EDT | Special Weather Statement | PHI | 41 min |
| Jul 29, 12:39 AM EDT | Special Weather Statement | PHI | 66 min |
| Jul 29, 1:18 AM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Jul 29, 5:13 AM EDT | Areal Flood Warning | PHI | 6 hr |
| Aug 1, 3:42 AM EDT | Flash Flood Watch | PHI | 14 hr |
| Aug 9, 3:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 13, 2:45 AM EDT | Flash Flood Watch | PHI | 9 hr |
| Aug 13, 6:23 AM EDT | Severe Thunderstorm Warning | PHI | 67 min |
| Aug 13, 6:24 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 13, 7:05 AM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| Aug 13, 7:16 AM EDT | Special Weather Statement | PHI | 59 min |
| Aug 13, 7:22 AM EDT | Areal Flood Advisory | PHI | 7 hr |
| Aug 13, 7:54 AM EDT | Flash Flood Warning | PHI | 8 hr |
| Aug 13, 7:57 AM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Aug 13, 8:44 AM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Aug 13, 9:07 AM EDT | Special Weather Statement | PHI | 38 min |
| Aug 13, 9:42 AM EDT | Flash Flood Warning | PHI | 5 hr |
| Aug 13, 2:18 PM EDT | Areal Flood Warning | PHI | 9 hr |
| Aug 22, 2:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 22, 3:47 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 28, 12:14 PM EDT | Special Weather Statement | PHI | 61 min |
| Aug 28, 12:52 PM EDT | Areal Flood Advisory | PHI | 113 min |
| Sep 2, 10:03 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Sep 2, 10:50 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 2, 12:28 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Sep 12, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 12, 4:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Oct 7, 8:56 AM EDT | Tornado Watch | SPC | 8 hr |
| Oct 7, 10:36 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 7, 12:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Oct 7, 1:37 PM EDT | Special Weather Statement | PHI | 53 min |
| Oct 8, 3:18 PM EDT | Coastal Flood Advisory | PHI | 24 hr |
| Oct 9, 3:41 PM EDT | Coastal Flood Advisory | PHI | 4 days |
| Oct 11, 5:08 AM EDT | Special Weather Statement | PHI | 3 hr |
| Oct 24, 2:55 PM EDT | Frost Advisory | PHI | 18 hr |
| Oct 25, 3:47 AM EDT | Freeze Watch | PHI | 10 hr |
| Oct 25, 1:32 PM EDT | Freeze Warning | PHI | 19 hr |
| Nov 1, 3:14 AM EDT | Wind Advisory | PHI | 9 hr |
| Nov 1, 6:25 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 1, 9:11 AM EDT | Severe Thunderstorm Warning | PHI | 79 min |
| Nov 1, 9:25 AM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Nov 18, 1:07 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 18, 2:31 AM EST | Mesoscale Discussion | SPC | 89 min |
| Nov 18, 2:46 AM EST | Severe Thunderstorm Warning | PHI | 59 min |
| Nov 18, 3:29 AM EST | Severe Thunderstorm Warning | PHI | 61 min |
| Nov 23, 3:43 PM EST | Red Flag Warning | PHI | 26 hr |
| Nov 26, 3:43 PM EST | Flood Watch | PHI | 19 hr |
| Nov 27, 6:25 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Dec 5, 6:36 AM EST | Dense Fog Advisory | PHI | 3 hr |
| Dec 7, 4:03 PM EST | Winter Weather Advisory | PHI | 45 hr |
| Dec 8, 12:41 PM EST | Winter Storm Warning | PHI | 8 hr |
| Dec 8, 2:30 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 3:48 PM EST | Winter Storm Warning | PHI | 22 hr |
| Dec 10, 7:23 AM EST | Special Weather Statement | PHI | 112 min |
| Dec 10, 7:28 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 13, 3:24 PM EST | Winter Weather Advisory | PHI | 36 hr |
| Dec 16, 2:56 PM EST | Winter Weather Advisory | PHI | 27 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 | 16 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 35 |
| Special Weather Statement | 36 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 10 |
| Flash Flood Watch | 7 |
| Flood Watch | 3 |
| Areal Flood Advisory | 25 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Coast and beach | |
| Coastal Flood Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.