Alert archive / New Jersey / Salem County
Weather alerts in Salem County, New Jersey, 2020
245 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 245
- Warnings
- 81
- Watches
- 30
- Advisories
- 79
- Busiest month
- August61 alerts
- Busiest day
- July 6, 20209 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 3 tornado warnings covering Salem County in 2020 had a tornado report inside them.
Salem County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 47 | 38 | 19% | 16 | 94% | 22 min |
| Flash flood warnings | 5 | 4 | 20% | 3 | 67% | 108 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 36 | 9 | 75% | 27 | 59% | 12 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 308 | 233 | 24% | 1,626 | 89% | 26 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 65 | 45 | 31% | 286 | 94% | 96 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 4, 8:33 AM EST | Dense Fog Advisory | PHI | 4 hr |
| Jan 7, 6:19 AM EST | Winter Weather Advisory | PHI | 14 hr |
| Jan 7, 2:27 PM EST | Wind Advisory | PHI | 28 hr |
| Jan 8, 8:28 AM EST | Snow Squall Warning | PHI | 47 min |
| Jan 8, 9:14 AM EST | Snow Squall Warning | PHI | 46 min |
| Jan 11, 1:12 PM EST | Wind Advisory | PHI | 24 hr |
| Jan 12, 6:32 AM EST | Special Weather Statement | PHI | 43 min |
| Jan 12, 6:47 AM EST | Severe Thunderstorm Warning | PHI | 43 min |
| Jan 12, 7:28 AM EST | Special Weather Statement | PHI | 47 min |
| Jan 15, 1:18 PM EST | Wind Advisory | PHI | 30 hr |
| Jan 17, 3:37 AM EST | Winter Weather Advisory | PHI | 41 hr |
| Jan 24, 9:24 AM EST | Coastal Flood Advisory | PHI | 27 hr |
| Feb 1, 2:02 AM EST | Dense Fog Advisory | PHI | 9 hr |
| Feb 5, 2:56 PM EST | Flood Watch | PHI | 29 hr |
| Feb 6, 2:55 PM EST | Wind Advisory | PHI | 27 hr |
| Feb 7, 8:03 AM EST | Coastal Flood Advisory | PHI | 11 hr |
| Feb 7, 9:36 AM EST | Severe Thunderstorm Warning | PHI | 39 min |
| Feb 7, 9:39 AM EST | Tornado Warning | PHI | 36 min |
| Feb 7, 9:50 AM EST | Mesoscale Discussion | SPC | 85 min |
| Feb 7, 10:10 AM EST | Severe Thunderstorm Warning | PHI | 65 min |
| Feb 7, 10:14 AM EST | Severe Thunderstorm Warning | PHI | 61 min |
| Feb 26, 12:53 AM EST | Dense Fog Advisory | PHI | 8 hr |
| Feb 27, 9:10 AM EST | Wind Advisory | PHI | 9 hr |
| Mar 3, 6:50 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 3, 9:09 PM EST | Severe Thunderstorm Warning | PHI | 51 min |
| Mar 3, 10:52 PM EST | Mesoscale Discussion | SPC | 113 min |
| Mar 8, 4:01 AM EDT | Coastal Flood Advisory | PHI | 7 hr |
| Mar 20, 2:32 AM EDT | Dense Fog Advisory | PHI | 6 hr |
| Mar 30, 4:31 PM EDT | Special Weather Statement | PHI | 44 min |
| Mar 30, 5:14 PM EDT | Special Weather Statement | PHI | 46 min |
| Apr 3, 2:36 PM EDT | Coastal Flood Advisory | PHI | 23 hr |
| Apr 7, 9:30 PM EDT | Coastal Flood Advisory | PHI | 33 hr |
| Apr 8, 7:19 PM EDT | Wind Advisory | PHI | 24 hr |
| Apr 9, 11:09 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 9, 12:01 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 9, 1:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Apr 9, 1:33 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Apr 9, 3:32 PM EDT | Wind Advisory | PHI | 27 hr |
| Apr 9, 11:49 PM EDT | Severe Thunderstorm Warning | PHI | 41 min |
| Apr 10, 12:16 AM EDT | Severe Thunderstorm Warning | PHI | 14 min |
| Apr 10, 12:18 AM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Apr 10, 3:43 PM EDT | Fire Weather Watch | PHI | 12 hr |
| Apr 11, 4:01 AM EDT | Red Flag Warning | PHI | 15 hr |
| Apr 11, 3:32 PM EDT | High Wind Watch | PHI | 21 hr |
| Apr 12, 12:25 PM EDT | High Wind Warning | PHI | 29 hr |
| Apr 12, 3:18 PM EDT | Coastal Flood Advisory | PHI | 30 hr |
| Apr 13, 6:17 AM EDT | Special Weather Statement | PHI | 28 min |
| Apr 13, 6:48 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Apr 13, 10:34 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 13, 11:33 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 13, 1:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 13, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Apr 13, 3:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 13, 3:40 PM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Apr 14, 3:34 PM EDT | Frost Advisory | PHI | 39 hr |
| Apr 16, 3:19 PM EDT | Freeze Warning | PHI | 18 hr |
| Apr 18, 3:07 AM EDT | Frost Advisory | PHI | 29 hr |
| Apr 21, 3:34 AM EDT | Freeze Warning | PHI | 28 hr |
| Apr 21, 12:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 21, 1:27 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 21, 1:38 PM EDT | Special Weather Statement | PHI | 52 min |
| Apr 21, 1:49 PM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Apr 21, 2:24 PM EDT | Severe Thunderstorm Warning | PHI | 66 min |
| Apr 22, 3:03 PM EDT | Frost Advisory | PHI | 16 hr |
| Apr 25, 3:20 AM EDT | Dense Fog Advisory | PHI | 3 hr |
| Apr 29, 3:14 AM EDT | Flood Watch | PHI | 48 hr |
| Apr 29, 3:15 PM EDT | Wind Advisory | PHI | 29 hr |
| Apr 30, 4:00 AM EDT | High Wind Warning | PHI | 16 hr |
| Apr 30, 4:16 AM EDT | Coastal Flood Advisory | PHI | 22 hr |
| May 5, 3:33 PM EDT | Coastal Flood Advisory | PHI | 36 hr |
| May 8, 11:39 PM EDT | Special Weather Statement | PHI | 36 min |
| May 9, 3:46 AM EDT | Freeze Warning | PHI | 29 hr |
| May 12, 2:25 PM EDT | Frost Advisory | PHI | 18 hr |
| May 19, 3:46 PM EDT | Coastal Flood Advisory | PHI | 7 hr |
| May 23, 4:41 AM EDT | Special Weather Statement | PHI | 49 min |
| May 25, 9:01 PM EDT | Dense Fog Advisory | PHI | 12 hr |
| May 26, 3:21 PM EDT | Dense Fog Advisory | PHI | 17 hr |
| May 29, 8:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 3, 10:08 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 3, 11:34 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 3, 12:06 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Jun 3, 12:38 PM EDT | Severe Thunderstorm Warning | PHI | 69 min |
| Jun 3, 3:52 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 3, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| Jun 3, 7:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 3, 7:55 PM EDT | Severe Thunderstorm Warning | PHI | 33 min |
| Jun 4, 6:06 AM EDT | Coastal Flood Advisory | PHI | 22 hr |
| Jun 4, 10:12 PM EDT | Severe Thunderstorm Warning | PHI | 33 min |
| Jun 4, 10:32 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Jun 5, 9:47 AM EDT | Flash Flood Watch | PHI | 12 hr |
| Jun 5, 5:19 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 10, 3:16 AM EDT | Heat Advisory | PHI | 15 hr |
| Jun 20, 12:32 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 23, 6:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jun 27, 5:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 1, 5:27 PM EDT | Areal Flood Advisory | PHI | 55 min |
| Jul 3, 10:59 PM EDT | Special Weather Statement | PHI | 46 min |
| Jul 5, 1:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 6, 12:33 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 6, 12:52 PM EDT | Flash Flood Watch | PHI | 8 hr |
| Jul 6, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 6, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| Jul 6, 4:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 6, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | 60 min |
| Jul 6, 5:24 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 6, 6:00 PM EDT | Severe Thunderstorm Warning | PHI | 60 min |
| Jul 6, 6:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 8:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 3:00 PM EDT | Flash Flood Watch | PHI | 30 hr |
| Jul 10, 9:27 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 10, 11:02 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 10, 12:56 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 10, 4:48 PM EDT | Areal Flood Warning | PHI | 4 hr |
| Jul 10, 8:46 PM EDT | Areal Flood Warning | PHI | 13 hr |
| Jul 12, 6:39 PM EDT | Areal Flood Warning | PHI | 18 hr |
| Jul 16, 3:43 PM EDT | Excessive Heat Watch | PHI | 36 hr |
| Jul 18, 3:55 AM EDT | Excessive Heat Warning | PHI | 64 hr |
| Jul 20, 7:57 PM EDT | Heat Advisory | PHI | 48 hr |
| Jul 22, 10:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 4:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 22, 5:54 PM EDT | Severe Thunderstorm Warning | PHI | 51 min |
| Jul 22, 6:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jul 22, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | 44 min |
| Jul 22, 7:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 22, 7:23 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jul 23, 11:16 PM EDT | Severe Thunderstorm Warning | PHI | 44 min |
| Jul 27, 3:06 PM EDT | Heat Advisory | PHI | 29 hr |
| Jul 30, 12:24 PM EDT | Heat Advisory | PHI | 6 hr |
| Jul 30, 5:06 PM EDT | Special Weather Statement | PHI | 39 min |
| Jul 30, 10:36 PM EDT | Special Weather Statement | PHI | 39 min |
| Jul 30, 11:06 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Aug 1, 3:20 PM EDT | Heat Advisory | PHI | 29 hr |
| Aug 2, 3:33 PM EDT | Flash Flood Watch | PHI | 48 hr |
| Aug 2, 5:04 PM EDT | Tropical Storm Watch | PHI | 18 hr |
| Aug 2, 11:49 PM EDT | Severe Thunderstorm Warning | PHI | 41 min |
| Aug 3, 5:08 AM EDT | Tropical Storm Warning | PHI | 39 hr |
| Aug 3, 4:26 PM EDT | Coastal Flood Advisory | PHI | 38 hr |
| Aug 3, 6:19 PM EDT | Special Weather Statement | PHI | 26 min |
| Aug 3, 6:32 PM EDT | Special Weather Statement | PHI | 28 min |
| Aug 3, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | 28 min |
| Aug 4, 2:26 AM EDT | Tornado Watch | SPC | 9 hr |
| Aug 4, 5:15 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 5:17 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 4, 6:45 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 7:28 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 4, 8:59 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 4, 10:02 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 4, 4:37 PM EDT | Areal Flood Warning | PHI | 10 hr |
| Aug 6, 3:37 AM EDT | Flash Flood Watch | PHI | 44 hr |
| Aug 6, 5:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 7:03 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 6, 7:18 AM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Aug 6, 7:33 AM EDT | Flash Flood Warning | PHI | 2 hr |
| Aug 7, 1:30 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 7, 5:25 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 7, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Aug 7, 6:00 PM EDT | Tornado Warning | PHI | 30 min |
| Aug 7, 6:08 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 7, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | 49 min |
| Aug 7, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Aug 7, 7:28 PM EDT | Severe Thunderstorm Warning | PHI | 62 min |
| Aug 7, 9:37 PM EDT | Areal Flood Warning | PHI | 7 hr |
| Aug 8, 11:38 AM EDT | Areal Flood Warning | PHI | 3 hr |
| Aug 8, 7:44 PM EDT | Areal Flood Warning | PHI | 41 hr |
| Aug 9, 1:00 AM EDT | Dense Fog Advisory | PHI | 4 hr |
| Aug 9, 2:25 PM EDT | Special Weather Statement | PHI | 65 min |
| Aug 11, 3:48 PM EDT | Flash Flood Watch | PHI | 28 hr |
| Aug 12, 12:43 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 12, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 3:12 PM EDT | Severe Thunderstorm Warning | PHI | 29 min |
| Aug 13, 3:02 AM EDT | Flash Flood Watch | PHI | 17 hr |
| Aug 16, 5:14 AM EDT | Coastal Flood Advisory | PHI | 22 hr |
| Aug 17, 5:08 AM EDT | Coastal Flood Advisory | PHI | 23 hr |
| Aug 23, 1:45 PM EDT | Special Weather Statement | PHI | 60 min |
| Aug 23, 3:44 PM EDT | Special Weather Statement | PHI | 31 min |
| Aug 23, 3:53 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 23, 4:10 PM EDT | Special Weather Statement | PHI | 35 min |
| Aug 25, 3:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 5:35 PM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| Aug 25, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | 50 min |
| Aug 27, 6:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 28, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 28, 3:41 PM EDT | Special Weather Statement | PHI | 34 min |
| Aug 28, 3:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 28, 3:52 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| Aug 28, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | 66 min |
| Aug 28, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Aug 29, 9:59 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 29, 11:58 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 29, 12:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 29, 3:53 PM EDT | Areal Flood Warning | PHI | 4 hr |
| Sep 2, 6:43 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 2, 8:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 3, 3:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 3, 3:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Sep 9, 5:08 PM EDT | Flash Flood Watch | PHI | 29 hr |
| Sep 10, 4:08 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Sep 10, 8:00 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Sep 11, 2:34 AM EDT | Areal Flood Warning | PHI | 6 hr |
| Sep 25, 8:01 AM EDT | Dense Fog Advisory | PHI | 119 min |
| Sep 29, 4:02 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 30, 1:46 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 30, 2:29 AM EDT | Areal Flood Warning | PHI | 15 hr |
| Oct 12, 5:37 AM EDT | Coastal Flood Advisory | PHI | 15 hr |
| Oct 17, 3:46 AM EDT | Frost Advisory | PHI | 28 hr |
| Oct 20, 10:49 PM EDT | Dense Fog Advisory | PHI | 11 hr |
| Oct 22, 12:25 AM EDT | Dense Fog Advisory | PHI | 9 hr |
| Oct 23, 2:54 AM EDT | Dense Fog Advisory | PHI | 6 hr |
| Oct 28, 3:10 PM EDT | Flood Watch | PHI | 27 hr |
| Oct 29, 3:21 PM EDT | Freeze Warning | PHI | 42 hr |
| Oct 31, 7:51 PM EDT | Frost Advisory | PHI | 11 hr |
| Nov 1, 3:10 AM EST | Wind Advisory | PHI | 36 hr |
| Nov 2, 8:22 PM EST | Freeze Warning | PHI | 7 hr |
| Nov 11, 6:34 PM EST | Areal Flood Advisory | PHI | 3 hr |
| Nov 12, 4:51 AM EST | Areal Flood Advisory | PHI | 48 min |
| Nov 12, 5:39 AM EST | Areal Flood Warning | PHI | 11 hr |
| Nov 13, 12:48 AM EST | Areal Flood Warning | PHI | 8 hr |
| Nov 14, 3:11 PM EST | Frost Advisory | PHI | 12 hr |
| Nov 15, 3:33 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 15, 5:35 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 15, 6:52 PM EST | Mesoscale Discussion | SPC | 113 min |
| Nov 15, 6:53 PM EST | Severe Thunderstorm Warning | PHI | 67 min |
| Nov 15, 7:50 PM EST | Severe Thunderstorm Warning | PHI | 70 min |
| Nov 29, 3:03 PM EST | Coastal Flood Advisory | PHI | 22 hr |
| Nov 29, 3:06 PM EST | Wind Advisory | PHI | 25 hr |
| Nov 30, 12:26 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Nov 30, 12:52 PM EST | Areal Flood Advisory | PHI | 92 min |
| Nov 30, 1:07 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 30, 2:48 PM EST | Areal Flood Warning | PHI | 8 hr |
| Nov 30, 3:01 PM EST | Severe Thunderstorm Warning | PHI | 44 min |
| Nov 30, 3:02 PM EST | Mesoscale Discussion | SPC | 88 min |
| Nov 30, 3:47 PM EST | Tornado Warning | PHI | 28 min |
| Nov 30, 4:37 PM EST | Mesoscale Discussion | SPC | 53 min |
| Nov 30, 4:49 PM EST | Severe Thunderstorm Warning | PHI | 41 min |
| Dec 10, 3:53 PM EST | Freezing Fog Advisory | PHI | 12 hr |
| Dec 13, 7:15 PM EST | Winter Storm Watch | PHI | 44 hr |
| Dec 15, 3:29 PM EST | Winter Weather Advisory | PHI | 43 hr |
| Dec 16, 1:32 PM EST | Coastal Flood Advisory | PHI | 23 hr |
| Dec 20, 9:05 PM EST | Freezing Fog Advisory | PHI | 9 hr |
| Dec 23, 3:23 PM EST | High Wind Warning | PHI | 38 hr |
| Dec 23, 3:23 PM EST | Wind Advisory | PHI | 38 hr |
| Dec 24, 8:39 PM EST | Areal Flood Advisory | PHI | 6 hr |
| Dec 24, 11:10 PM EST | Areal Flood Advisory | PHI | 4 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 | 47 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 37 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 13 |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 8 |
| Flood Watch | 3 |
| Areal Flood Advisory | 23 |
| Winter | |
| Snow Squall Warning | 2 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 3 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 5 |
| Frost Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 1 |
| Wind Advisory | 11 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
| Freezing Fog Advisory | 2 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 16 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.