Alert archive / New Jersey / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in New Jersey, 2025
131 severe thunderstorm warnings in 2025. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Severe Thunderstorm Warnings
- 131
- Busiest month
- July56 severe thunderstorm warnings
- Busiest day
- June 19, 202516 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
83 of 131 severe thunderstorm warnings covering New Jersey in 2025 had a qualifying storm report inside them; 202 of 224 hail, wind and damage reports fell inside a warning, on average 23 minutes after it went out.
New Jersey, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 131 | 83 | 37% | 224 | 90% | 23 min |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 233 | 131 | 44% | 502 | 91% | 23 min |
| NWS New York, NY: severe thunderstorm warnings | 50 | 34 | 32% | 138 | 84% | 24 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 | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 8:27 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean | 48 min |
| Mar 31, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer, Middlesex, Monmouth, Ocean | 52 min |
| Mar 31, 8:56 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 49 min |
| Apr 4, 4:40 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 50 min |
| Apr 4, 5:12 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 63 min |
| Apr 4, 5:46 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more | 42 min |
| Apr 15, 4:07 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 53 min |
| Apr 15, 4:58 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 39 min |
| Apr 26, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 27 min |
| May 2, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 43 min |
| May 3, 1:33 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 27 min |
| May 3, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 23 min |
| May 3, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon | 52 min |
| May 3, 5:21 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset | 39 min |
| May 3, 5:58 PM EDT | Severe Thunderstorm Warning | OKX | Bergen | 47 min |
| May 3, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 24 min |
| May 6, 4:18 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 57 min |
| May 16, 11:16 AM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 59 min |
| May 16, 11:46 AM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 59 min |
| May 16, 12:20 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Cumberland, Gloucester, Salem | 40 min |
| May 16, 12:49 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more | 56 min |
| May 16, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland | 49 min |
| May 16, 1:58 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 32 min |
| May 16, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland, Gloucester, Salem | 70 min |
| May 31, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 16 min |
| May 31, 5:04 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 41 min |
| Jun 19, 2:39 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Union | 51 min |
| Jun 19, 2:44 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset | 31 min |
| Jun 19, 3:14 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Essex, Hudson, Union | 46 min |
| Jun 19, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 46 min |
| Jun 19, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 29 min |
| Jun 19, 3:32 PM EDT | Severe Thunderstorm Warning | OKX | Passaic | 30 min |
| Jun 19, 4:16 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Hudson, Union | 44 min |
| Jun 19, 4:44 PM EDT | Severe Thunderstorm Warning | OKX | Hudson | 31 min |
| Jun 19, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 47 min |
| Jun 19, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 52 min |
| Jun 19, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Hunterdon, Mercer | 50 min |
| Jun 19, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 49 min |
| Jun 19, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 39 min |
| Jun 19, 6:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more | 31 min |
| Jun 19, 6:39 PM EDT | Severe Thunderstorm Warning | OKX | Hudson, Union | 36 min |
| Jun 19, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 50 min |
| Jun 25, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 52 min |
| Jun 25, 7:54 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 26 min |
| Jun 26, 4:20 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 40 min |
| Jun 29, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington | 44 min |
| Jun 30, 2:23 AM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 52 min |
| Jun 30, 5:37 AM EDT | Severe Thunderstorm Warning | PHI | Cape May | 23 min |
| Jun 30, 1:28 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 47 min |
| Jun 30, 1:44 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 46 min |
| Jun 30, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 46 min |
| Jun 30, 3:52 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 38 min |
| Jun 30, 4:03 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Somerset | 42 min |
| Jun 30, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Somerset | 51 min |
| Jun 30, 9:41 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 64 min |
| Jul 1, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 47 min |
| Jul 1, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth | 66 min |
| Jul 1, 4:25 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 50 min |
| Jul 1, 5:07 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 38 min |
| Jul 1, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 61 min |
| Jul 1, 6:32 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 58 min |
| Jul 1, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 46 min |
| Jul 3, 3:35 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 40 min |
| Jul 3, 3:53 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Essex, Passaic | 67 min |
| Jul 3, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 43 min |
| Jul 3, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 49 min |
| Jul 3, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Warren | 44 min |
| Jul 3, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 48 min |
| Jul 3, 5:47 PM EDT | Severe Thunderstorm Warning | OKX | Union | 43 min |
| Jul 3, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Morris, Somerset | 37 min |
| Jul 3, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset, Warren | 34 min |
| Jul 3, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 32 min |
| Jul 8, 1:24 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 51 min |
| Jul 8, 1:50 PM EDT | Severe Thunderstorm Warning | OKX | Passaic | 43 min |
| Jul 8, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 44 min |
| Jul 8, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Mercer | 49 min |
| Jul 8, 6:08 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer | 34 min |
| Jul 8, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Somerset | 38 min |
| Jul 8, 6:32 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth, Ocean | 43 min |
| Jul 8, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 48 min |
| Jul 8, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 52 min |
| Jul 8, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 41 min |
| Jul 8, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 46 min |
| Jul 9, 7:21 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 28 min |
| Jul 9, 9:58 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 47 min |
| Jul 16, 7:31 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 29 min |
| Jul 16, 7:54 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth, Ocean | 26 min |
| Jul 16, 10:44 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 46 min |
| Jul 25, 2:29 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 46 min |
| Jul 25, 2:52 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 53 min |
| Jul 25, 3:18 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Hudson, Union | 42 min |
| Jul 25, 3:54 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Hudson, Union | 51 min |
| Jul 25, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset, Warren | 42 min |
| Jul 25, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 66 min |
| Jul 25, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 52 min |
| Jul 25, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth, Ocean | 31 min |
| Jul 25, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 50 min |
| Jul 25, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 38 min |
| Jul 25, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 27 min |
| Jul 25, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 31 min |
| Jul 30, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 35 min |
| Jul 31, 1:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 48 min |
| Jul 31, 1:41 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Union | 49 min |
| Jul 31, 1:55 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 18 min |
| Jul 31, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 40 min |
| Jul 31, 2:34 PM EDT | Severe Thunderstorm Warning | OKX | Union | 41 min |
| Jul 31, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex | 52 min |
| Jul 31, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 50 min |
| Jul 31, 3:03 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 42 min |
| Jul 31, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 48 min |
| Aug 13, 4:49 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset, Warren | 41 min |
| Aug 13, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 36 min |
| Aug 13, 6:39 PM EDT | Severe Thunderstorm Warning | OKX | Hudson, Union | 36 min |
| Aug 13, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 44 min |
| Aug 17, 5:39 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Hudson, Union | 51 min |
| Aug 17, 6:01 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 44 min |
| Sep 6, 2:14 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 46 min |
| Sep 6, 2:39 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Essex | 51 min |
| Sep 6, 2:41 PM EDT | Severe Thunderstorm Warning | OKX | Hudson | 19 min |
| Sep 6, 2:46 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Somerset | 23 min |
| Sep 6, 2:47 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 43 min |
| Sep 6, 2:51 PM EDT | Severe Thunderstorm Warning | OKX | Hudson, Union | 39 min |
| Sep 6, 3:23 PM EDT | Severe Thunderstorm Warning | OKX | Hudson, Union | 52 min |
| Sep 6, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 38 min |
| Sep 6, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden | 31 min |
| Nov 5, 10:05 PM EST | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 40 min |
| Dec 19, 9:41 AM EST | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more | 49 min |
| Dec 19, 1:40 PM EST | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Hunterdon, Salem, Warren | 65 min |
| Dec 19, 2:41 PM EST | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 64 min |
| Dec 19, 2:51 PM EST | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Hunterdon, Mercer and 4 more | 54 min |
| Dec 19, 3:18 PM EST | Severe Thunderstorm Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 57 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Burlington County33
- Gloucester County29
- Ocean County25
- Hunterdon County23
- Salem County22
- Monmouth County21
- Camden County20
- Somerset County20
- Cumberland County18
- Mercer County18
- Warren County18
- Middlesex County17
- Atlantic County14
- Union County14
- Morris County13
- Hudson County12
- Cape May County10
- Sussex County10
- Essex County10
- Bergen County5
- Passaic County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20242026
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.