Weather alerts in Delaware, 2021
375 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 375
- Warnings
- 115
- Watches
- 38
- Advisories
- 95
- Busiest month
- July78 alerts
- Busiest day
- September 1, 202121 alerts
Over time
By month
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 |
|---|---|---|---|---|
| Jan 14, 1:11 AM EST | Freezing Fog Advisory | PHI | Kent, Sussex | 7 hr |
| Jan 25, 3:08 PM EST | Winter Weather Advisory | PHI | Kent, New Castle, Sussex | 34 hr |
| Jan 29, 3:14 PM EST | Winter Storm Watch | PHI | Kent, New Castle | 25 hr |
| Jan 30, 2:13 PM EST | Coastal Flood Watch | PHI | Kent, Sussex | 24 hr |
| Jan 30, 3:37 PM EST | Wind Advisory | PHI | Sussex | 51 hr |
| Jan 30, 3:44 PM EST | Winter Storm Warning | PHI | New Castle | 72 hr |
| Jan 30, 3:44 PM EST | Winter Weather Advisory | PHI | Kent, Sussex | 72 hr |
| Jan 31, 3:23 AM EST | Coastal Flood Warning | PHI | Kent, Sussex | 60 hr |
| Feb 1, 3:18 PM EST | Coastal Flood Advisory | PHI | Kent, New Castle | 12 hr |
| Feb 2, 6:04 AM EST | Coastal Flood Advisory | PHI | Kent | 8 hr |
| Feb 2, 3:05 PM EST | Coastal Flood Advisory | PHI | Sussex | 13 hr |
| Feb 3, 4:06 AM EST | Coastal Flood Statement | PHI | Sussex | 15 hr |
| Feb 5, 3:09 PM EST | Winter Storm Watch | PHI | Kent, New Castle, Sussex | 12 hr |
| Feb 6, 3:23 AM EST | Winter Storm Warning | PHI | New Castle | 36 hr |
| Feb 6, 3:23 AM EST | Winter Weather Advisory | PHI | Kent, New Castle, Sussex | 36 hr |
| Feb 10, 3:47 AM EST | Winter Weather Advisory | PHI | Kent, New Castle, Sussex | 32 hr |
| Feb 12, 3:21 PM EST | Winter Weather Advisory | PHI | Kent, New Castle, Sussex | 43 hr |
| Feb 13, 10:02 AM EST | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 6 hr |
| Feb 14, 3:15 PM EST | Winter Weather Advisory | PHI | New Castle | 39 hr |
| Feb 16, 3:14 PM EST | Winter Storm Watch | PHI | New Castle | 24 hr |
| Feb 17, 3:43 PM EST | Winter Storm Warning | PHI | New Castle | 24 hr |
| Feb 17, 3:43 PM EST | Winter Weather Advisory | PHI | Kent, New Castle, Sussex | 47 hr |
| Feb 18, 10:23 AM EST | Mesoscale Discussion | SPC | Kent, New Castle | 3 hr |
| Feb 19, 4:56 AM EST | Mesoscale Discussion | SPC | Kent | 3 hr |
| Feb 28, 3:14 PM EST | Wind Advisory | PHI | New Castle, Sussex | 42 hr |
| Feb 28, 5:20 PM EST | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Feb 28, 5:20 PM EST | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Mar 13, 2:44 PM EST | Wind Advisory | PHI | New Castle | 28 hr |
| Mar 13, 2:56 PM EST | Fire Weather Watch | PHI | Kent, New Castle, Sussex | 12 hr |
| Mar 14, 4:22 AM EDT | Red Flag Warning | PHI | Kent, New Castle, Sussex | 37 hr |
| Mar 18, 3:31 AM EDT | Wind Advisory | PHI | Sussex | 33 hr |
| Mar 24, 1:51 PM EDT | Areal Flood Advisory | PHI | New Castle | 5 hr |
| Mar 24, 7:09 PM EDT | Dense Fog Advisory | PHI | Kent, New Castle, Sussex | 14 hr |
| Mar 25, 11:00 AM EDT | Wind Advisory | PHI | Kent, New Castle, Sussex | 32 hr |
| Mar 28, 1:24 PM EDT | Mesoscale Discussion | SPC | Kent, Sussex | 2 hr |
| Mar 28, 5:05 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 4 hr |
| Mar 28, 6:12 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Mar 28, 6:47 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 43 min |
| Mar 28, 7:05 PM EDT | Mesoscale Discussion | SPC | New Castle | 115 min |
| Mar 28, 7:54 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Mar 31, 3:46 PM EDT | Freeze Watch | PHI | Kent, Sussex | 11 hr |
| Mar 31, 3:50 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Apr 1, 3:14 AM EDT | Freeze Warning | PHI | Kent, Sussex | 30 hr |
| Apr 2, 8:46 AM EDT | Freeze Warning | PHI | Kent, Sussex | 24 hr |
| Apr 10, 1:19 AM EDT | Special Weather Statement | PHI | New Castle | 56 min |
| Apr 10, 3:22 AM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Apr 11, 9:43 PM EDT | Special Weather Statement | PHI | New Castle | 47 min |
| Apr 21, 12:22 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 113 min |
| Apr 21, 12:28 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 5 hr |
| Apr 21, 1:10 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 50 min |
| Apr 21, 1:23 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 37 min |
| Apr 21, 2:09 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Apr 21, 2:18 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 42 min |
| Apr 21, 2:47 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 16 min |
| Apr 22, 2:31 PM EDT | Frost Advisory | PHI | Kent, New Castle, Sussex | 17 hr |
| Apr 29, 3:32 AM EDT | High Wind Watch | PHI | Kent, New Castle, Sussex | 16 hr |
| Apr 29, 4:52 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 2 hr |
| Apr 29, 7:23 PM EDT | High Wind Warning | PHI | Kent, New Castle, Sussex | 26 hr |
| Apr 30, 8:56 PM EDT | Wind Advisory | PHI | Kent, New Castle, Sussex | 6 hr |
| May 4, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 41 min |
| May 4, 7:38 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 31 min |
| May 4, 7:43 PM EDT | Special Weather Statement | PHI | Sussex | 47 min |
| May 5, 1:03 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| May 8, 3:04 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 26 min |
| May 8, 3:23 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 37 min |
| May 8, 3:39 PM EDT | Special Weather Statement | PHI | Kent | 36 min |
| May 8, 3:54 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| May 8, 4:15 PM EDT | Special Weather Statement | PHI | Sussex | 30 min |
| May 8, 4:33 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| May 8, 5:56 PM EDT | Special Weather Statement | PHI | Kent | 34 min |
| May 21, 2:34 PM EDT | Rip Current Statement | PHI | Sussex | 3 days |
| May 26, 1:21 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 84 min |
| May 26, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 7 hr |
| May 26, 4:41 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 64 min |
| May 26, 6:34 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 116 min |
| May 27, 9:45 PM EDT | Coastal Flood Advisory | PHI | Kent, New Castle, Sussex | 58 hr |
| May 28, 3:40 PM EDT | Rip Current Statement | PHI | Sussex | 53 hr |
| May 28, 9:48 PM EDT | Coastal Flood Watch | PHI | Kent, Sussex | 8 hr |
| May 29, 5:26 AM EDT | Coastal Flood Warning | PHI | Kent, Sussex | 24 hr |
| May 30, 5:14 AM EDT | Coastal Flood Statement | PHI | Sussex | 6 hr |
| Jun 3, 9:37 AM EDT | Flash Flood Watch | PHI | New Castle | 12 hr |
| Jun 3, 1:46 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 119 min |
| Jun 3, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 6 hr |
| Jun 3, 4:47 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 88 min |
| Jun 3, 5:20 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Jun 3, 5:33 PM EDT | Special Weather Statement | PHI | Sussex | 42 min |
| Jun 3, 7:09 PM EDT | Flash Flood Warning | PHI | New Castle | 2 hr |
| Jun 4, 2:26 PM EDT | Mesoscale Discussion | SPC | New Castle | 94 min |
| Jun 4, 3:09 PM EDT | Severe Thunderstorm Watch | SPC | New Castle | 5 hr |
| Jun 4, 4:12 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 93 min |
| Jun 5, 3:35 PM EDT | Heat Advisory | PHI | New Castle | 4 days |
| Jun 8, 7:43 PM EDT | Special Weather Statement | PHI | Sussex | 32 min |
| Jun 8, 8:15 PM EDT | Special Weather Statement | PHI | Sussex | 45 min |
| Jun 9, 7:54 AM EDT | River Flood Warning | PHI | New Castle | 5 hr |
| Jun 9, 1:35 PM EDT | Special Weather Statement | PHI | New Castle | 25 min |
| Jun 9, 2:07 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 23 min |
| Jun 9, 2:21 PM EDT | Flash Flood Warning | PHI | New Castle | 73 min |
| Jun 9, 2:26 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 64 min |
| Jun 9, 2:28 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 62 min |
| Jun 9, 3:11 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 64 min |
| Jun 9, 3:24 PM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Jun 9, 4:32 PM EDT | Areal Flood Advisory | PHI | Sussex | 108 min |
| Jun 9, 4:37 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 27 min |
| Jun 10, 3:29 PM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Jun 14, 2:06 PM EDT | Severe Thunderstorm Watch | SPC | New Castle | 9 hr |
| Jun 14, 6:18 PM EDT | Mesoscale Discussion | SPC | New Castle | 117 min |
| Jun 14, 6:41 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jun 14, 7:29 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 6 hr |
| Jun 14, 8:55 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 50 min |
| Jun 14, 10:09 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jun 14, 11:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 63 min |
| Jun 14, 11:39 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 85 min |
| Jun 14, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 63 min |
| Jun 14, 11:51 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 54 min |
| Jun 14, 11:54 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 66 min |
| Jun 21, 4:35 AM EDT | Heat Advisory | PHI | New Castle | 15 hr |
| Jun 21, 1:51 PM EDT | Mesoscale Discussion | SPC | New Castle | 114 min |
| Jun 21, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 6 hr |
| Jun 21, 6:15 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 60 min |
| Jun 21, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 54 min |
| Jun 21, 6:47 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 58 min |
| Jun 21, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Jun 21, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 47 min |
| Jun 21, 9:28 PM EDT | Special Weather Statement | PHI | Kent | 47 min |
| Jun 24, 2:38 PM EDT | Coastal Flood Advisory | PHI | Sussex | 10 hr |
| Jun 27, 3:19 AM EDT | Heat Advisory | PHI | New Castle | 4 days |
| Jun 28, 3:13 PM EDT | Excessive Heat Warning | PHI | New Castle | 53 hr |
| Jun 28, 3:13 PM EDT | Heat Advisory | PHI | New Castle | 53 hr |
| Jun 30, 3:19 PM EDT | Flash Flood Watch | PHI | New Castle | 26 hr |
| Jun 30, 9:21 PM EDT | Special Weather Statement | PHI | New Castle | 39 min |
| Jul 1, 11:45 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jul 1, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 7 hr |
| Jul 1, 2:36 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 84 min |
| Jul 1, 3:48 PM EDT | Areal Flood Advisory | PHI | New Castle | 112 min |
| Jul 1, 3:50 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 40 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 52 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 52 min |
| Jul 1, 4:10 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 94 min |
| Jul 1, 4:16 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 89 min |
| Jul 1, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Jul 1, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 43 min |
| Jul 1, 4:57 PM EDT | Tornado Warning | PHI | Kent, Sussex | 22 min |
| Jul 1, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 48 min |
| Jul 2, 12:12 PM EDT | Areal Flood Advisory | PHI | New Castle | 97 min |
| Jul 2, 3:13 PM EDT | Mesoscale Discussion | SPC | New Castle | 92 min |
| Jul 3, 3:34 PM EDT | Special Weather Statement | PHI | New Castle | 26 min |
| Jul 3, 5:05 PM EDT | Special Weather Statement | PHI | Sussex | 25 min |
| Jul 5, 3:21 AM EDT | Heat Advisory | PHI | New Castle | 65 hr |
| Jul 6, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle | 8 hr |
| Jul 6, 4:23 PM EDT | Mesoscale Discussion | SPC | New Castle | 97 min |
| Jul 7, 11:19 AM EDT | Tropical Storm Watch | PHI | Sussex | 18 hr |
| Jul 7, 3:32 PM EDT | Flash Flood Watch | PHI | Kent, New Castle, Sussex | 42 hr |
| Jul 7, 11:06 PM EDT | Tropical Storm Warning | PHI | Sussex | 32 hr |
| Jul 8, 2:43 PM EDT | Rip Current Statement | PHI | Sussex | 27 hr |
| Jul 8, 10:01 PM EDT | Mesoscale Discussion | SPC | Sussex | 59 min |
| Jul 8, 10:19 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 5 hr |
| Jul 8, 11:37 PM EDT | Tornado Warning | PHI | Sussex | 23 min |
| Jul 8, 11:59 PM EDT | Tornado Warning | PHI | Sussex | 12 min |
| Jul 9, 12:04 AM EDT | Tornado Warning | PHI | Sussex | 26 min |
| Jul 9, 12:11 AM EDT | Tornado Warning | PHI | Sussex | 35 min |
| Jul 9, 12:28 AM EDT | Tornado Warning | PHI | Sussex | 17 min |
| Jul 9, 2:15 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jul 9, 4:35 PM EDT | Mesoscale Discussion | SPC | New Castle | 115 min |
| Jul 9, 4:54 PM EDT | Special Weather Statement | PHI | New Castle | 66 min |
| Jul 9, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 43 min |
| Jul 9, 6:19 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 41 min |
| Jul 9, 6:50 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Jul 9, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 63 min |
| Jul 9, 8:34 PM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Jul 11, 6:18 PM EDT | Heat Advisory | PHI | New Castle | 50 hr |
| Jul 12, 1:32 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 88 min |
| Jul 12, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | New Castle | 5 hr |
| Jul 12, 7:00 PM EDT | Areal Flood Advisory | PHI | New Castle | 112 min |
| Jul 12, 7:06 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 69 min |
| Jul 12, 7:25 PM EDT | Mesoscale Discussion | SPC | New Castle | 2 hr |
| Jul 15, 2:33 PM EDT | Heat Advisory | PHI | New Castle | 52 hr |
| Jul 16, 3:17 PM EDT | Flash Flood Watch | PHI | New Castle | 35 hr |
| Jul 17, 12:00 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 3 hr |
| Jul 17, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 10 hr |
| Jul 17, 3:02 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 88 min |
| Jul 17, 4:38 PM EDT | Mesoscale Discussion | SPC | New Castle | 97 min |
| Jul 17, 6:54 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 2 hr |
| Jul 17, 7:36 PM EDT | Special Weather Statement | PHI | Kent | 39 min |
| Jul 17, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 46 min |
| Jul 17, 8:40 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Jul 17, 9:25 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Jul 17, 9:27 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Jul 17, 9:36 PM EDT | Flash Flood Warning | PHI | New Castle | 2 hr |
| Jul 17, 10:02 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 58 min |
| Jul 17, 10:36 PM EDT | Special Weather Statement | PHI | Kent | 24 min |
| Jul 17, 10:54 PM EDT | Areal Flood Advisory | PHI | Kent | 48 min |
| Jul 17, 10:55 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 50 min |
| Jul 21, 10:32 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 58 min |
| Jul 21, 11:56 AM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle, Sussex | 7 hr |
| Jul 21, 2:39 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Jul 21, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 33 min |
| Jul 21, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 25 min |
| Jul 26, 12:38 AM EDT | Special Weather Statement | PHI | New Castle | 52 min |
| Jul 26, 1:05 AM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 40 min |
| Jul 28, 4:20 PM EDT | Special Weather Statement | PHI | Sussex | 40 min |
| Jul 28, 6:25 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Jul 29, 1:37 PM EDT | Special Weather Statement | PHI | Sussex | 38 min |
| Jul 29, 2:23 PM EDT | Tornado Watch | SPC | Kent, New Castle, Sussex | 8 hr |
| Jul 29, 2:38 PM EDT | Special Weather Statement | PHI | Sussex | 37 min |
| Jul 29, 2:43 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 62 min |
| Jul 29, 3:02 PM EDT | Tornado Warning | PHI | Sussex | 43 min |
| Jul 29, 4:26 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 94 min |
| Aug 7, 9:49 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 5 hr |
| Aug 9, 2:10 PM EDT | Special Weather Statement | PHI | Sussex | 50 min |
| Aug 9, 2:41 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
| Aug 9, 3:01 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 2 hr |
| Aug 9, 3:43 PM EDT | Excessive Heat Watch | PHI | New Castle | 12 hr |
| Aug 9, 4:35 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 40 min |
| Aug 9, 4:36 PM EDT | Areal Flood Advisory | PHI | New Castle | 104 min |
| Aug 9, 4:59 PM EDT | Flash Flood Warning | PHI | Kent | 79 min |
| Aug 9, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 20 min |
| Aug 10, 3:33 AM EDT | Excessive Heat Warning | PHI | New Castle | 4 days |
| Aug 10, 3:33 AM EDT | Heat Advisory | PHI | Kent, Sussex | 4 days |
| Aug 10, 2:30 PM EDT | Mesoscale Discussion | SPC | New Castle | 3 hr |
| Aug 10, 7:54 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 51 min |
| Aug 10, 8:11 PM EDT | Special Weather Statement | PHI | New Castle | 34 min |
| Aug 10, 8:18 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 42 min |
| Aug 10, 9:09 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Aug 11, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | Kent, New Castle | 6 hr |
| Aug 11, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 49 min |
| Aug 11, 6:44 PM EDT | Mesoscale Discussion | SPC | New Castle | 91 min |
| Aug 11, 7:04 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Aug 11, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 49 min |
| Aug 13, 3:21 PM EDT | Special Weather Statement | PHI | Sussex | 24 min |
| Aug 13, 6:02 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 58 min |
| Aug 13, 6:04 PM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Aug 13, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 30 min |
| Aug 13, 6:47 PM EDT | Special Weather Statement | PHI | Sussex | 43 min |
| Aug 13, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 37 min |
| Aug 13, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 33 min |
| Aug 13, 7:30 PM EDT | Special Weather Statement | PHI | Sussex | 45 min |
| Aug 13, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 47 min |
| Aug 13, 7:57 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 93 min |
| Aug 13, 8:04 PM EDT | Special Weather Statement | PHI | Sussex | 41 min |
| Aug 13, 8:28 PM EDT | Special Weather Statement | PHI | Sussex | 62 min |
| Aug 13, 8:40 PM EDT | Areal Flood Advisory | PHI | Sussex | 62 min |
| Aug 14, 11:34 PM EDT | Areal Flood Advisory | PHI | Kent | 116 min |
| Aug 15, 12:36 AM EDT | Flash Flood Warning | PHI | Kent | 3 hr |
| Aug 17, 12:11 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 17, 1:25 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Aug 17, 1:31 PM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Aug 17, 1:46 PM EDT | River Flood Warning | PHI | New Castle | 3 hr |
| Aug 17, 1:56 PM EDT | Flash Flood Warning | PHI | New Castle | 4 hr |
| Aug 17, 2:06 PM EDT | River Flood Warning | PHI | New Castle | 4 hr |
| Aug 17, 2:49 PM EDT | Flash Flood Warning | PHI | Kent, New Castle | 91 min |
| Aug 19, 3:22 PM EDT | Flash Flood Watch | PHI | Kent, Sussex | 23 hr |
| Aug 19, 8:15 PM EDT | Rip Current Statement | PHI | Sussex | 3 days |
| Aug 20, 6:39 AM EDT | Areal Flood Advisory | PHI | Kent | 8 hr |
| Aug 20, 6:46 AM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Aug 20, 8:18 AM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 117 min |
| Aug 21, 3:09 AM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Aug 21, 3:26 AM EDT | Coastal Flood Advisory | PHI | Sussex | 22 hr |
| Aug 21, 3:27 AM EDT | Flood Watch | PHI | New Castle | 53 hr |
| Aug 22, 9:41 AM EDT | Areal Flood Advisory | PHI | Kent | 2 hr |
| Aug 22, 9:57 AM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Aug 22, 10:24 AM EDT | Special Weather Statement | PHI | Kent | 51 min |
| Aug 22, 10:37 AM EDT | Special Weather Statement | PHI | Sussex | 53 min |
| Aug 22, 10:52 AM EDT | Special Weather Statement | PHI | Sussex | 38 min |
| Aug 23, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 31 min |
| Aug 25, 2:13 PM EDT | Heat Advisory | PHI | New Castle | 53 hr |
| Aug 26, 2:36 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 43 min |
| Aug 26, 3:30 PM EDT | Flash Flood Watch | PHI | New Castle | 48 hr |
| Aug 27, 3:48 PM EDT | Areal Flood Advisory | PHI | New Castle | 102 min |
| Aug 27, 5:11 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 27, 5:39 PM EDT | Special Weather Statement | PHI | New Castle | 36 min |
| Aug 27, 6:10 PM EDT | Areal Flood Advisory | PHI | New Castle | 2 hr |
| Aug 27, 8:29 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Aug 27, 8:57 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Aug 27, 9:04 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 41 min |
| Aug 27, 9:09 PM EDT | Special Weather Statement | PHI | New Castle | 36 min |
| Aug 27, 9:44 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Aug 28, 12:08 AM EDT | Special Weather Statement | PHI | Sussex | 37 min |
| Aug 30, 5:00 AM EDT | Flash Flood Watch | PHI | Kent, New Castle, Sussex | 71 hr |
| Aug 30, 3:44 PM EDT | Special Weather Statement | PHI | New Castle | 31 min |
| Aug 30, 4:14 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Aug 30, 4:51 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 84 min |
| Aug 30, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 28 min |
| Aug 30, 9:09 PM EDT | Special Weather Statement | PHI | Kent | 36 min |
| Sep 1, 4:01 AM EDT | Mesoscale Discussion | SPC | New Castle | 119 min |
| Sep 1, 6:19 AM EDT | Areal Flood Advisory | PHI | New Castle | 116 min |
| Sep 1, 6:49 AM EDT | Flash Flood Warning | PHI | New Castle | 86 min |
| Sep 1, 8:03 AM EDT | River Flood Warning | PHI | New Castle | 4 hr |
| Sep 1, 11:03 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Sep 1, 12:40 PM EDT | Tornado Watch | SPC | Kent, New Castle, Sussex | 9 hr |
| Sep 1, 2:53 PM EDT | Flash Flood Warning | PHI | New Castle | 9 hr |
| Sep 1, 3:09 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 3 hr |
| Sep 1, 4:28 PM EDT | Mesoscale Discussion | SPC | New Castle | 2 hr |
| Sep 1, 4:59 PM EDT | Tornado Warning | PHI | Kent, Sussex | 46 min |
| Sep 1, 5:01 PM EDT | Tornado Warning | PHI | Kent, New Castle | 44 min |
| Sep 1, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 44 min |
| Sep 1, 5:26 PM EDT | Flash Flood Warning | PHI | New Castle | 9 hr |
| Sep 1, 5:35 PM EDT | Tornado Warning | PHI | Kent, New Castle | 25 min |
| Sep 1, 6:03 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 42 min |
| Sep 1, 6:08 PM EDT | River Flood Warning | PHI | New Castle | 18 hr |
| Sep 1, 6:15 PM EDT | River Flood Warning | PHI | New Castle | 9 hr |
| Sep 1, 6:24 PM EDT | Tornado Warning | PHI | New Castle | 16 min |
| Sep 1, 6:38 PM EDT | River Flood Warning | PHI | New Castle | 28 hr |
| Sep 1, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 63 min |
| Sep 1, 7:44 PM EDT | River Flood Warning | PHI | New Castle | 11 hr |
| Sep 1, 10:23 PM EDT | Coastal Flood Statement | PHI | Sussex | 13 hr |
| Sep 1, 11:38 PM EDT | Areal Flood Warning | PHI | New Castle | 10 hr |
| Sep 2, 2:23 AM EDT | Areal Flood Warning | PHI | New Castle | 9 hr |
| Sep 7, 2:33 PM EDT | Flash Flood Watch | PHI | New Castle | 37 hr |
| Sep 7, 8:12 PM EDT | Rip Current Statement | PHI | Sussex | 4 days |
| Sep 9, 12:58 AM EDT | Special Weather Statement | PHI | New Castle | 32 min |
| Sep 9, 1:12 AM EDT | Areal Flood Advisory | PHI | New Castle | 62 min |
| Sep 9, 5:37 AM EDT | Areal Flood Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
| Sep 16, 3:19 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Sep 16, 9:11 PM EDT | Rip Current Statement | PHI | Sussex | 47 hr |
| Sep 21, 4:59 AM EDT | Rip Current Statement | PHI | Sussex | 4 days |
| Sep 22, 3:24 AM EDT | Flash Flood Watch | PHI | New Castle | 41 hr |
| Sep 22, 5:01 PM EDT | Coastal Flood Advisory | PHI | New Castle | 22 hr |
| Sep 22, 6:14 PM EDT | Mesoscale Discussion | SPC | Kent, Sussex | 2 hr |
| Sep 23, 3:13 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 5 hr |
| Sep 23, 10:30 AM EDT | Mesoscale Discussion | SPC | Kent, New Castle, Sussex | 2 hr |
| Sep 23, 11:11 AM EDT | Special Weather Statement | PHI | New Castle | 64 min |
| Sep 23, 11:33 AM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 3 hr |
| Sep 23, 11:42 AM EDT | Severe Thunderstorm Warning | PHI | New Castle | 33 min |
| Sep 23, 11:57 AM EDT | Flash Flood Warning | PHI | New Castle | 3 hr |
| Sep 23, 12:12 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Sep 28, 7:29 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 31 min |
| Oct 3, 3:33 AM EDT | Dense Fog Advisory | PHI | New Castle | 6 hr |
| Oct 4, 4:44 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 2 hr |
| Oct 5, 12:49 AM EDT | Special Weather Statement | PHI | New Castle | 26 min |
| Oct 5, 2:10 AM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Oct 8, 5:24 AM EDT | Coastal Flood Advisory | PHI | Kent, New Castle, Sussex | 4 days |
| Oct 10, 4:14 AM EDT | Coastal Flood Warning | PHI | Kent, Sussex | 37 hr |
| Oct 11, 4:59 PM EDT | Coastal Flood Statement | PHI | Sussex | 24 hr |
| Oct 12, 4:07 AM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 13 hr |
| Oct 12, 5:23 PM EDT | Coastal Flood Statement | PHI | Sussex | 7 hr |
| Oct 14, 3:16 AM EDT | Dense Fog Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
| Oct 16, 1:50 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 115 min |
| Oct 16, 3:31 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 18 min |
| Oct 16, 3:40 PM EDT | Special Weather Statement | PHI | New Castle | 50 min |
| Oct 16, 4:18 PM EDT | Special Weather Statement | PHI | New Castle | 57 min |
| Oct 24, 3:09 PM EDT | Flash Flood Watch | PHI | New Castle | 48 hr |
| Oct 25, 4:15 PM EDT | Special Weather Statement | PHI | Sussex | 30 min |
| Oct 25, 5:27 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Oct 25, 6:27 PM EDT | Special Weather Statement | PHI | New Castle | 33 min |
| Oct 25, 6:33 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 42 min |
| Oct 25, 6:41 PM EDT | Mesoscale Discussion | SPC | Kent, New Castle | 2 hr |
| Oct 25, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Oct 26, 12:31 AM EDT | Areal Flood Warning | PHI | New Castle | 5 hr |
| Oct 26, 1:53 AM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Oct 26, 8:18 PM EDT | Coastal Flood Advisory | PHI | Sussex | 21 hr |
| Oct 27, 5:08 PM EDT | Coastal Flood Advisory | PHI | Kent, New Castle, Sussex | 34 hr |
| Oct 28, 3:22 AM EDT | Coastal Flood Watch | PHI | Kent, New Castle, Sussex | 15 hr |
| Oct 28, 3:23 AM EDT | Wind Advisory | PHI | Kent, New Castle, Sussex | 45 hr |
| Oct 28, 4:20 PM EDT | High Wind Warning | PHI | Sussex | 28 hr |
| Oct 28, 6:20 PM EDT | Coastal Flood Warning | PHI | Kent, New Castle, Sussex | 55 hr |
| Oct 29, 3:36 PM EDT | Mesoscale Discussion | SPC | Sussex | 2 hr |
| Oct 29, 6:10 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
| Oct 29, 8:31 PM EDT | River Flood Warning | PHI | New Castle | 4 hr |
| Oct 30, 4:25 AM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 41 hr |
| Oct 31, 1:16 AM EDT | Coastal Flood Statement | PHI | Sussex | 20 hr |
| Nov 2, 3:30 AM EDT | Frost Advisory | PHI | Kent, New Castle, Sussex | 30 hr |
| Nov 3, 1:52 PM EDT | Frost Advisory | PHI | Kent, New Castle, Sussex | 19 hr |
| Nov 4, 10:06 AM EDT | Freeze Warning | PHI | Kent, Sussex | 23 hr |
| Nov 4, 7:55 PM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 16 hr |
| Nov 5, 2:36 PM EDT | Frost Advisory | PHI | Sussex | 18 hr |
| Nov 6, 4:14 AM EDT | Coastal Flood Advisory | PHI | Kent, Sussex | 10 hr |
| Nov 6, 3:59 PM EDT | Coastal Flood Advisory | PHI | Sussex | 23 hr |
| Nov 7, 5:52 PM EST | Coastal Flood Advisory | PHI | Sussex | 20 hr |
| Nov 13, 2:11 PM EST | Freeze Warning | PHI | Sussex | 19 hr |
| Nov 25, 1:14 PM EST | Wind Advisory | PHI | Sussex | 35 hr |
| Dec 10, 3:58 AM EST | Wind Advisory | PHI | Kent, New Castle, Sussex | 45 hr |
| Dec 11, 7:29 PM EST | Mesoscale Discussion | SPC | Kent, New Castle | 3 hr |
| Dec 11, 9:01 PM EST | Severe Thunderstorm Warning | PHI | New Castle | 48 min |
| Dec 30, 4:32 PM EST | Coastal Flood Advisory | PHI | Sussex | 16 hr |
| Dec 30, 9:33 PM EST | Dense Fog Advisory | PHI | Kent, New Castle, Sussex | 11 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.