Alert archive / New Jersey / Cape May County
Weather alerts in Cape May County, New Jersey, 2017
163 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cape May County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 163
- Warnings
- 26
- Watches
- 20
- Advisories
- 71
- Busiest month
- July38 alerts
- Busiest day
- July 14, 201712 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Cape May County in 2017 had a tornado report inside them.
Cape May County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 5 | 58% | 5 | 100% | 32 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 13 | 1 | 92% | 6 | 33% | 2 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 197 | 120 | 39% | 396 | 79% | 26 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 52 | 15 | 71% | 54 | 78% | 91 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 5, 11:13 AM EST | Winter Weather Advisory | PHI | 18 hr |
| Jan 5, 3:41 PM EST | Winter Storm Watch | PHI | 337 days |
| Jan 6, 9:37 AM EST | Winter Storm Warning | PHI | 34 hr |
| Jan 7, 11:27 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 7, 4:02 PM EST | Special Weather Statement | PHI | 88 min |
| Jan 21, 3:30 AM EST | High Wind Watch | PHI | 24 hr |
| Jan 21, 8:58 AM EST | Dense Fog Advisory | PHI | 2 hr |
| Jan 21, 3:29 PM EST | Dense Fog Advisory | PHI | 22 hr |
| Jan 22, 3:28 AM EST | Coastal Flood Advisory | PHI | 36 hr |
| Jan 22, 3:44 AM EST | High Wind Warning | PHI | 40 hr |
| Jan 23, 4:13 AM EST | Coastal Flood Warning | PHI | 31 hr |
| Jan 23, 7:39 PM EST | Wind Advisory | PHI | 8 hr |
| Jan 29, 3:24 AM EST | Winter Weather Advisory | PHI | 29 hr |
| Feb 8, 4:01 AM EST | Winter Weather Advisory | PHI | 32 hr |
| Feb 9, 3:35 AM EST | Wind Advisory | PHI | 18 hr |
| Feb 9, 4:23 AM EST | Coastal Flood Advisory | PHI | 6 hr |
| Feb 12, 3:55 AM EST | High Wind Watch | PHI | 11 hr |
| Feb 12, 2:45 PM EST | High Wind Warning | PHI | 22 hr |
| Feb 12, 2:45 PM EST | Wind Advisory | PHI | 27 hr |
| Feb 12, 11:53 PM EST | Severe Thunderstorm Warning | PHI | 52 min |
| Feb 23, 2:58 AM EST | Dense Fog Advisory | PHI | 7 hr |
| Feb 25, 1:30 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 25, 4:26 PM EST | Mesoscale Discussion | SPC | 94 min |
| Feb 25, 5:23 PM EST | Severe Thunderstorm Warning | PHI | 52 min |
| Mar 1, 12:50 PM EST | Mesoscale Discussion | SPC | 55 min |
| Mar 1, 1:13 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 1, 2:45 PM EST | Severe Thunderstorm Warning | PHI | 60 min |
| Mar 1, 2:50 PM EST | Mesoscale Discussion | SPC | 55 min |
| Mar 1, 3:09 PM EST | Wind Advisory | PHI | 19 hr |
| Mar 2, 2:47 AM EST | High Wind Warning | PHI | 7 hr |
| Mar 8, 5:44 AM EST | Special Weather Statement | PHI | 31 min |
| Mar 10, 11:31 AM EST | Special Weather Statement | PHI | 74 min |
| Mar 12, 2:58 PM EDT | Coastal Flood Watch | PHI | 191 days |
| Mar 12, 3:25 PM EDT | High Wind Watch | PHI | 13 hr |
| Mar 13, 4:03 AM EDT | Coastal Flood Warning | PHI | 35 hr |
| Mar 13, 4:06 AM EDT | High Wind Warning | PHI | 35 hr |
| Mar 13, 4:21 AM EDT | Winter Weather Advisory | PHI | 33 hr |
| Mar 14, 5:57 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Mar 14, 9:02 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Mar 15, 3:41 AM EDT | Wind Advisory | PHI | 16 hr |
| Mar 27, 3:30 AM EDT | Dense Fog Advisory | PHI | 6 hr |
| Mar 31, 3:41 AM EDT | Flood Watch | PHI | 20 hr |
| Apr 5, 2:50 PM EDT | Wind Advisory | PHI | 25 hr |
| Apr 6, 12:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Apr 6, 12:45 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 6, 2:07 PM EDT | Special Weather Statement | PHI | 53 min |
| Apr 24, 8:54 PM EDT | Coastal Flood Advisory | PHI | 27 hr |
| May 5, 11:33 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 13, 9:30 AM EDT | Areal Flood Advisory | PHI | 6 hr |
| May 19, 3:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 19, 9:55 PM EDT | Special Weather Statement | PHI | 50 min |
| May 23, 3:02 PM EDT | Coastal Flood Advisory | PHI | 34 hr |
| May 24, 3:25 PM EDT | Coastal Flood Advisory | PHI | 33 hr |
| May 26, 3:03 PM EDT | Coastal Flood Advisory | PHI | 11 hr |
| May 27, 4:02 AM EDT | Coastal Flood Advisory | PHI | 23 hr |
| May 28, 4:04 AM EDT | Coastal Flood Advisory | PHI | 24 hr |
| May 29, 4:27 AM EDT | Coastal Flood Advisory | PHI | 24 hr |
| Jun 17, 5:27 AM EDT | Rip Current Statement | PHI | 64 hr |
| Jun 19, 11:13 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 19, 5:44 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 19, 6:47 PM EDT | Severe Thunderstorm Warning | PHI | 43 min |
| Jun 19, 9:08 PM EDT | Special Weather Statement | PHI | 37 min |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 21, 7:05 PM EDT | Special Weather Statement | PHI | 25 min |
| Jun 21, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Jun 21, 8:18 PM EDT | Special Weather Statement | PHI | 27 min |
| Jun 22, 3:31 AM EDT | Coastal Flood Advisory | PHI | 17 hr |
| Jun 24, 6:54 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 24, 7:00 AM EDT | Special Weather Statement | PHI | 30 min |
| Jun 24, 7:19 AM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Jul 1, 1:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 5:41 PM EDT | Special Weather Statement | PHI | 34 min |
| Jul 12, 3:10 PM EDT | Heat Advisory | PHI | 29 hr |
| Jul 13, 11:09 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 8:26 PM EDT | Special Weather Statement | PHI | 34 min |
| Jul 13, 8:27 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 13, 9:07 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| Jul 13, 9:57 PM EDT | Special Weather Statement | PHI | 33 min |
| Jul 14, 11:40 AM EDT | Flash Flood Watch | PHI | 11 hr |
| Jul 14, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | 63 min |
| Jul 14, 4:13 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jul 14, 4:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 14, 4:44 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Jul 14, 5:47 PM EDT | Special Weather Statement | PHI | 13 min |
| Jul 14, 7:28 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 20, 3:43 AM EDT | Heat Advisory | PHI | 15 hr |
| Jul 22, 2:33 AM EDT | Special Weather Statement | PHI | 27 min |
| Jul 22, 2:57 AM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jul 22, 10:45 AM EDT | Coastal Flood Advisory | PHI | 13 hr |
| Jul 23, 12:01 AM EDT | Coastal Flood Advisory | PHI | 25 hr |
| Jul 23, 4:29 PM EDT | Severe Thunderstorm Warning | PHI | 26 min |
| Jul 23, 4:39 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 23, 11:38 PM EDT | Tornado Warning | PHI | 37 min |
| Jul 23, 11:43 PM EDT | Areal Flood Advisory | PHI | 6 hr |
| Jul 24, 3:03 AM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Jul 24, 2:55 PM EDT | Coastal Flood Advisory | PHI | 11 hr |
| Jul 24, 6:09 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 24, 11:30 PM EDT | Special Weather Statement | PHI | 45 min |
| Jul 25, 3:25 PM EDT | Coastal Flood Advisory | PHI | 11 hr |
| Jul 27, 3:08 PM EDT | Flash Flood Watch | PHI | 42 hr |
| Jul 28, 8:52 PM EDT | Rip Current Statement | PHI | 23 hr |
| Jul 28, 11:13 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 29, 3:03 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 29, 5:13 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Jul 29, 6:48 AM EDT | Areal Flood Advisory | PHI | 117 min |
| Jul 29, 8:56 PM EDT | Coastal Flood Advisory | PHI | 9 hr |
| Jul 29, 8:56 PM EDT | Rip Current Statement | PHI | 23 hr |
| Aug 2, 6:52 PM EDT | Special Weather Statement | PHI | 38 min |
| Aug 6, 3:12 PM EDT | Flash Flood Watch | PHI | 26 hr |
| Aug 7, 12:36 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 7, 4:24 PM EDT | Areal Flood Warning | PHI | 4 hr |
| Aug 15, 6:54 PM EDT | Rip Current Statement | PHI | 26 hr |
| Aug 16, 3:11 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Aug 18, 3:39 AM EDT | Flash Flood Watch | PHI | 18 hr |
| Aug 18, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 18, 7:19 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 18, 7:34 PM EDT | Special Weather Statement | PHI | 26 min |
| Aug 18, 7:49 PM EDT | Severe Thunderstorm Warning | PHI | 35 min |
| Aug 18, 8:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 18, 8:26 PM EDT | Special Weather Statement | PHI | 49 min |
| Aug 27, 8:41 PM EDT | Rip Current Statement | PHI | 3 days |
| Aug 28, 3:33 PM EDT | Wind Advisory | PHI | 32 hr |
| Aug 28, 4:00 PM EDT | High Surf Advisory | PHI | 36 hr |
| Aug 29, 2:26 PM EDT | Areal Flood Advisory | PHI | 6 hr |
| Sep 1, 9:12 PM EDT | Rip Current Statement | PHI | 24 hr |
| Sep 8, 5:04 AM EDT | Rip Current Statement | PHI | 39 hr |
| Sep 10, 5:44 AM EDT | Rip Current Statement | PHI | 15 hr |
| Sep 11, 8:22 PM EDT | Rip Current Statement | PHI | 24 hr |
| Sep 13, 1:22 PM EDT | Rip Current Statement | PHI | 8 hr |
| Sep 16, 8:35 PM EDT | Rip Current Statement | PHI | 20 hr |
| Sep 17, 3:53 PM EDT | Tropical Storm Watch | PHI | 41 hr |
| Sep 18, 7:27 AM EDT | Coastal Flood Advisory | PHI | 20 hr |
| Sep 18, 7:27 AM EDT | High Surf Advisory | PHI | 45 hr |
| Sep 19, 2:58 AM EDT | Coastal Flood Warning | PHI | 30 hr |
| Sep 20, 12:58 AM EDT | Coastal Flood Advisory | PHI | 25 hr |
| Sep 20, 4:08 AM EDT | Rip Current Statement | PHI | 16 hr |
| Sep 21, 3:54 AM EDT | Rip Current Statement | PHI | 41 hr |
| Sep 22, 9:37 AM EDT | Coastal Flood Advisory | PHI | 5 hr |
| Sep 23, 3:35 PM EDT | Rip Current Statement | PHI | 5 hr |
| Sep 24, 3:40 AM EDT | Rip Current Statement | PHI | 6 days |
| Sep 26, 3:20 AM EDT | High Surf Advisory | PHI | 48 hr |
| Oct 11, 9:28 PM EDT | Coastal Flood Advisory | PHI | 22 hr |
| Oct 23, 3:04 PM EDT | Wind Advisory | PHI | 24 hr |
| Oct 24, 6:01 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Oct 28, 3:52 AM EDT | Flash Flood Watch | PHI | 48 hr |
| Oct 29, 3:23 AM EDT | Wind Advisory | PHI | 32 hr |
| Nov 3, 3:16 PM EDT | Coastal Flood Advisory | PHI | 21 hr |
| Nov 4, 3:38 PM EDT | Coastal Flood Advisory | PHI | 21 hr |
| Nov 6, 4:50 AM EST | Coastal Flood Advisory | PHI | 7 hr |
| Nov 6, 3:51 PM EST | Coastal Flood Advisory | PHI | 22 hr |
| Nov 7, 3:42 PM EST | Coastal Flood Advisory | PHI | 23 hr |
| Nov 9, 3:34 AM EST | Freeze Watch | PHI | 11 hr |
| Nov 9, 2:15 PM EST | Freeze Warning | PHI | 44 hr |
| Nov 18, 2:46 PM EST | Wind Advisory | PHI | 24 hr |
| Dec 3, 8:28 PM EST | Coastal Flood Advisory | PHI | 16 hr |
| Dec 8, 3:04 AM EST | Winter Weather Advisory | PHI | 45 hr |
| Dec 8, 3:34 PM EST | Winter Storm Warning | PHI | 33 hr |
| Dec 12, 9:37 PM EST | Wind Advisory | PHI | 12 hr |
| Dec 15, 3:26 AM EST | Winter Weather Advisory | PHI | 18 hr |
| Dec 15, 1:50 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 24, 3:18 AM EST | Wind Advisory | PHI | 35 hr |
| Dec 29, 11:52 PM EST | Winter Weather Advisory | PHI | 14 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 | 12 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 7 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 5 |
| Flood Watch | 1 |
| Areal Flood Advisory | 17 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Wind and dust | |
| High Wind Warning | 4 |
| High Wind Watch | 3 |
| Wind Advisory | 12 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| Tropical | |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| Coastal Flood Warning | 3 |
| Coastal Flood Watch | 1 |
| Coastal Flood Advisory | 25 |
| High Surf Advisory | 3 |
| Rip Current Statement | 15 |
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.