Alert archive / Delaware / Sussex County
Weather alerts in Sussex County, Delaware, 2020
247 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Sussex County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 247
- Warnings
- 51
- Watches
- 29
- Advisories
- 76
- Busiest month
- August57 alerts
- Busiest day
- August 4, 20208 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 4 tornado warnings covering Sussex County in 2020 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 7 minutes after it went out.
Sussex County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 1 | 75% | 1 | 100% | 7 min |
| Severe thunderstorm warnings | 27 | 16 | 41% | 37 | 89% | 35 min |
| Flash flood warnings | 4 | 2 | 50% | 4 | 100% | 40 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 5, 7:38 AM EST | Wind Advisory | PHI | 4 hr |
| Jan 7, 2:27 PM EST | Wind Advisory | PHI | 28 hr |
| Jan 15, 1:18 PM EST | Wind Advisory | PHI | 30 hr |
| Jan 24, 9:24 AM EST | Coastal Flood Advisory | PHI | 27 hr |
| Feb 5, 2:56 PM EST | Flood Watch | PHI | 29 hr |
| Feb 6, 2:55 PM EST | Wind Advisory | PHI | 27 hr |
| Feb 6, 8:24 PM EST | High Wind Warning | PHI | 21 hr |
| Feb 7, 8:18 AM EST | Coastal Flood Statement | PHI | 11 hr |
| Feb 7, 9:24 AM EST | Severe Thunderstorm Warning | PHI | 66 min |
| Feb 26, 12:53 AM EST | Dense Fog Advisory | PHI | 8 hr |
| Feb 27, 12:40 AM EST | Special Weather Statement | PHI | 50 min |
| Feb 27, 1:41 AM EST | Special Weather Statement | PHI | 34 min |
| Mar 6, 5:44 AM EST | Coastal Flood Advisory | PHI | 28 hr |
| Mar 8, 4:01 AM EDT | Coastal Flood Advisory | PHI | 7 hr |
| Apr 3, 4:57 AM EDT | Coastal Flood Watch | PHI | 10 hr |
| Apr 3, 2:36 PM EDT | Coastal Flood Warning | PHI | 19 hr |
| Apr 4, 9:58 AM EDT | Coastal Flood Statement | PHI | 4 hr |
| Apr 4, 5:16 PM EDT | Coastal Flood Statement | PHI | 22 hr |
| Apr 4, 9:06 PM EDT | Coastal Flood Advisory | PHI | 22 hr |
| Apr 7, 9:30 PM EDT | Coastal Flood Advisory | PHI | 33 hr |
| Apr 7, 11:10 PM EDT | Special Weather Statement | PHI | 35 min |
| Apr 7, 11:48 PM EDT | Severe Thunderstorm Warning | PHI | 27 min |
| Apr 8, 4:56 AM EDT | Special Weather Statement | PHI | 64 min |
| Apr 8, 7:19 PM EDT | Wind Advisory | PHI | 24 hr |
| Apr 9, 7:35 AM EDT | Special Weather Statement | PHI | 40 min |
| 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, 1:41 PM EDT | Special Weather Statement | PHI | 34 min |
| Apr 9, 2:11 PM EDT | Special Weather Statement | PHI | 49 min |
| Apr 9, 2:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 9, 3:32 PM EDT | Wind Advisory | PHI | 27 hr |
| 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 13, 3:43 AM EDT | Coastal Flood Statement | PHI | 17 hr |
| Apr 13, 5:44 AM EDT | Special Weather Statement | PHI | 31 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, 3:22 PM EDT | Severe Thunderstorm Warning | PHI | 38 min |
| Apr 15, 2:52 AM EDT | Freeze Watch | PHI | 36 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, 1:27 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 21, 2:04 PM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Apr 21, 2:46 PM EDT | Severe Thunderstorm Warning | PHI | 74 min |
| 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, 10:20 AM EDT | Coastal Flood Statement | PHI | 25 hr |
| Apr 30, 5:36 PM EDT | Special Weather Statement | PHI | 54 min |
| May 1, 8:48 AM EDT | Special Weather Statement | PHI | 57 min |
| May 1, 9:50 AM EDT | Special Weather Statement | PHI | 40 min |
| May 1, 11:30 AM EDT | Special Weather Statement | PHI | 45 min |
| May 1, 12:13 PM EDT | Special Weather Statement | PHI | 32 min |
| May 3, 11:16 PM EDT | Special Weather Statement | PHI | 44 min |
| May 3, 11:55 PM EDT | Severe Thunderstorm Warning | PHI | 20 min |
| May 4, 12:12 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 4, 1:15 AM EDT | Special Weather Statement | PHI | 15 min |
| May 5, 3:33 PM EDT | Coastal Flood Advisory | PHI | 36 hr |
| May 18, 9:30 PM EDT | Rip Current Statement | PHI | 4 days |
| May 18, 9:30 PM EDT | High Surf Advisory | PHI | 55 hr |
| May 19, 3:46 PM EDT | Coastal Flood Advisory | PHI | 7 hr |
| May 25, 9:01 PM EDT | Dense Fog Advisory | PHI | 12 hr |
| May 26, 3:21 PM EDT | Dense Fog Advisory | PHI | 17 hr |
| Jun 4, 6:06 AM EDT | Coastal Flood Advisory | PHI | 22 hr |
| Jun 10, 3:16 AM EDT | Heat Advisory | PHI | 15 hr |
| Jun 11, 3:16 AM EDT | Rip Current Statement | PHI | 18 hr |
| Jun 11, 6:35 PM EDT | Areal Flood Advisory | PHI | 115 min |
| Jun 11, 7:27 PM EDT | Special Weather Statement | PHI | 33 min |
| Jun 11, 7:41 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jun 11, 7:58 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 15, 3:48 AM EDT | Rip Current Statement | PHI | 41 hr |
| Jun 21, 3:38 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 22, 7:01 PM EDT | Special Weather Statement | PHI | 44 min |
| Jun 22, 7:08 PM EDT | Severe Thunderstorm Warning | PHI | 15 min |
| Jun 25, 1:32 PM EDT | Special Weather Statement | PHI | 28 min |
| Jun 27, 5:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 1, 12:15 PM EDT | Special Weather Statement | PHI | 45 min |
| Jul 1, 12:36 PM EDT | Severe Thunderstorm Warning | PHI | 54 min |
| Jul 1, 1:11 PM EDT | Areal Flood Warning | PHI | 3 hr |
| Jul 1, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 3, 12:19 PM EDT | Coastal Flood Advisory | PHI | 12 hr |
| Jul 4, 3:52 AM EDT | Coastal Flood Advisory | PHI | 20 hr |
| Jul 5, 1:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 5, 2:29 PM EDT | Special Weather Statement | PHI | 31 min |
| Jul 6, 12:33 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 6, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 6, 4:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 6, 6:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 7:41 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Jul 6, 8:21 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Jul 6, 8:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 8:41 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jul 6, 8:53 PM EDT | Severe Thunderstorm Warning | PHI | 37 min |
| Jul 6, 9:25 PM EDT | Severe Thunderstorm Warning | PHI | 24 min |
| Jul 6, 9:49 PM EDT | Special Weather Statement | PHI | 56 min |
| Jul 9, 4:27 AM EDT | Rip Current Statement | PHI | 42 hr |
| Jul 9, 3:00 PM EDT | Flash Flood Watch | PHI | 30 hr |
| Jul 9, 5:06 PM EDT | Tropical Storm Warning | PHI | 30 hr |
| Jul 10, 6:34 AM EDT | Flash Flood Warning | PHI | 6 hr |
| Jul 10, 9:21 AM EDT | Areal Flood Advisory | PHI | 8 hr |
| Jul 10, 12:22 PM EDT | Areal Flood Warning | PHI | 3 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 18, 3:55 AM EDT | Heat Advisory | PHI | 64 hr |
| Jul 19, 11:25 AM EDT | Dense Fog Advisory | PHI | 13 hr |
| Jul 19, 2:44 PM EDT | Special Weather Statement | PHI | 46 min |
| Jul 19, 3:32 PM EDT | Special Weather Statement | PHI | 28 min |
| 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, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jul 22, 7:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 24, 5:34 PM EDT | Special Weather Statement | PHI | 26 min |
| Jul 27, 3:06 PM EDT | Heat Advisory | PHI | 29 hr |
| Jul 28, 8:32 PM EDT | Special Weather Statement | PHI | 43 min |
| Jul 28, 8:53 PM EDT | Special Weather Statement | PHI | 52 min |
| Jul 30, 12:24 PM EDT | Heat Advisory | PHI | 6 hr |
| Jul 30, 10:24 PM EDT | Special Weather Statement | PHI | 36 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, 8:53 PM EDT | Rip Current Statement | PHI | 51 hr |
| Aug 2, 8:53 PM EDT | High Surf Advisory | PHI | 51 hr |
| Aug 3, 5:08 AM EDT | Tropical Storm Warning | PHI | 39 hr |
| Aug 3, 3:05 PM EDT | Special Weather Statement | PHI | 25 min |
| Aug 3, 3:27 PM EDT | Special Weather Statement | PHI | 48 min |
| Aug 3, 4:26 PM EDT | Coastal Flood Advisory | PHI | 38 hr |
| Aug 4, 1:41 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 2:26 AM EDT | Tornado Watch | SPC | 9 hr |
| Aug 4, 4:50 AM EDT | Tornado Warning | PHI | 25 min |
| Aug 4, 5:15 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 7:39 AM EDT | Tornado Warning | PHI | 36 min |
| Aug 4, 7:51 AM EDT | Tornado Warning | PHI | 24 min |
| Aug 4, 8:18 AM EDT | Tornado Warning | PHI | 27 min |
| Aug 4, 8:58 AM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 4, 8:21 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| 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, 6:13 AM EDT | Severe Thunderstorm Warning | PHI | 62 min |
| Aug 6, 7:13 AM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Aug 6, 7:46 AM EDT | Special Weather Statement | PHI | 29 min |
| Aug 6, 8:16 AM EDT | Severe Thunderstorm Warning | PHI | 44 min |
| Aug 7, 8:35 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 11, 3:48 PM EDT | Flash Flood Watch | PHI | 28 hr |
| Aug 12, 3:06 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 12, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Aug 12, 3:46 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 13, 3:02 AM EDT | Flash Flood Watch | PHI | 17 hr |
| Aug 13, 11:56 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 13, 12:22 PM EDT | Special Weather Statement | PHI | 38 min |
| Aug 15, 3:30 PM EDT | Rip Current Statement | PHI | 30 hr |
| Aug 16, 5:14 AM EDT | Coastal Flood Advisory | PHI | 22 hr |
| Aug 16, 10:52 PM EDT | Coastal Flood Statement | PHI | 4 hr |
| Aug 17, 5:08 AM EDT | Coastal Flood Advisory | PHI | 23 hr |
| Aug 17, 10:44 AM EDT | Rip Current Statement | PHI | 11 hr |
| Aug 17, 11:51 PM EDT | Coastal Flood Statement | PHI | 4 hr |
| Aug 19, 7:44 AM EDT | Special Weather Statement | PHI | 46 min |
| Aug 19, 8:26 AM EDT | Special Weather Statement | PHI | 34 min |
| Aug 19, 9:23 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 19, 10:45 AM EDT | Special Weather Statement | PHI | 45 min |
| Aug 23, 2:40 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 25, 9:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Aug 27, 7:12 PM EDT | Special Weather Statement | PHI | 48 min |
| Aug 27, 7:25 PM EDT | Severe Thunderstorm Warning | PHI | 35 min |
| Aug 28, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 28, 6:17 PM EDT | Severe Thunderstorm Warning | PHI | 43 min |
| Aug 28, 7:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 7:53 PM EDT | Special Weather Statement | PHI | 37 min |
| Aug 29, 12:58 AM EDT | Special Weather Statement | PHI | 32 min |
| Aug 29, 8:16 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 29, 12:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 29, 2:02 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 29, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | 26 min |
| Sep 2, 10:35 PM EDT | Special Weather Statement | PHI | 55 min |
| Sep 3, 3:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 3, 3:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Sep 3, 6:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 3, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Sep 3, 7:40 PM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Sep 3, 10:14 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Sep 9, 5:08 PM EDT | Flash Flood Watch | PHI | 29 hr |
| Sep 11, 8:39 PM EDT | Rip Current Statement | PHI | 23 hr |
| Sep 12, 7:16 PM EDT | Rip Current Statement | PHI | 4 days |
| Sep 18, 3:32 AM EDT | Coastal Flood Advisory | PHI | 34 hr |
| Sep 18, 4:05 AM EDT | Rip Current Statement | PHI | 17 hr |
| Sep 19, 4:21 AM EDT | Rip Current Statement | PHI | 5 days |
| Sep 19, 3:36 PM EDT | Coastal Flood Advisory | PHI | 23 hr |
| Sep 19, 6:19 PM EDT | High Surf Advisory | PHI | 3 days |
| Sep 21, 3:48 AM EDT | Coastal Flood Advisory | PHI | 12 hr |
| Sep 23, 5:11 AM EDT | Coastal Flood Advisory | PHI | 13 hr |
| Sep 23, 6:10 PM EDT | Coastal Flood Statement | PHI | 3 hr |
| Sep 25, 8:01 AM EDT | Dense Fog Advisory | PHI | 119 min |
| Sep 30, 12:12 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Sep 30, 12:58 AM EDT | Special Weather Statement | PHI | 62 min |
| Oct 12, 5:37 AM EDT | Coastal Flood Advisory | PHI | 15 hr |
| Oct 12, 8:54 PM EDT | Coastal Flood Statement | PHI | 7 hr |
| Oct 13, 8:53 PM EDT | Coastal Flood Statement | PHI | 4 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, 3:16 AM EDT | Wind Advisory | PHI | 17 hr |
| Oct 29, 3:21 PM EDT | Freeze Warning | PHI | 42 hr |
| Oct 29, 3:33 PM EDT | Coastal Flood Advisory | PHI | 21 hr |
| Oct 30, 12:58 PM EDT | Coastal Flood Statement | PHI | 2 hr |
| Oct 30, 3:14 PM EDT | Coastal Flood Advisory | PHI | 9 hr |
| Oct 31, 7:51 PM EDT | Frost Advisory | PHI | 11 hr |
| Nov 1, 3:10 AM EST | Wind Advisory | PHI | 36 hr |
| Nov 6, 11:25 PM EST | Dense Fog Advisory | PHI | 10 hr |
| Nov 11, 10:54 PM EST | Areal Flood Advisory | PHI | 3 hr |
| Nov 12, 4:16 AM EST | Areal Flood Advisory | PHI | 110 min |
| Nov 12, 6:06 AM EST | Areal Flood Warning | PHI | 4 hr |
| Nov 12, 10:15 AM EST | Areal Flood Advisory | PHI | 5 hr |
| Nov 14, 2:09 PM EST | Coastal Flood Advisory | PHI | 26 hr |
| Nov 14, 3:11 PM EST | Wind Advisory | PHI | 31 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, 7:40 PM EST | Severe Thunderstorm Warning | PHI | 80 min |
| Nov 15, 8:57 PM EST | Severe Thunderstorm Warning | PHI | 63 min |
| Nov 15, 11:02 PM EST | Coastal Flood Statement | PHI | 3 hr |
| 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, 1:07 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 30, 2:01 PM EST | Coastal Flood Statement | PHI | 3 hr |
| Nov 30, 3:02 PM EST | Mesoscale Discussion | SPC | 88 min |
| Nov 30, 4:37 PM EST | Mesoscale Discussion | SPC | 53 min |
| Dec 4, 3:20 PM EST | Wind Advisory | PHI | 24 hr |
| Dec 5, 2:14 AM EST | Areal Flood Advisory | PHI | 3 hr |
| Dec 5, 3:04 AM EST | Areal Flood Advisory | PHI | 3 hr |
| Dec 14, 2:49 PM EST | Coastal Flood Watch | PHI | 25 hr |
| Dec 15, 3:17 AM EST | High Wind Watch | PHI | 16 hr |
| Dec 15, 3:27 PM EST | Coastal Flood Warning | PHI | 45 hr |
| Dec 15, 7:03 PM EST | Wind Advisory | PHI | 34 hr |
| Dec 23, 4:11 AM EST | High Wind Watch | PHI | 11 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 25, 12:03 AM EST | Coastal Flood Statement | PHI | 12 hr |
| Dec 25, 7:12 PM EST | Special Weather Statement | PHI | 33 min |
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 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.