Alert archive / Delaware / Sussex County
Weather alerts in Sussex County, Delaware, 2013
177 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 177
- Warnings
- 32
- Watches
- 23
- Advisories
- 50
- Busiest month
- June55 alerts
- Busiest day
- June 13, 201312 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 Sussex County in 2013 had a tornado report inside them.
Sussex County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 10 | 3 | 70% | 2 | 50% | 37 min |
| Flash flood warnings | 9 | 4 | 56% | 6 | 67% | 88 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 5 | 1 | 80% | 2 | 50% | 1 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 127 | 69 | 46% | 212 | 73% | 24 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 70 | 38 | 46% | 112 | 76% | 71 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 12, 2:54 PM EST | Dense Fog Advisory | PHI | 22 hr |
| Jan 13, 3:30 PM EST | Dense Fog Advisory | PHI | 19 hr |
| Jan 16, 12:09 PM EST | Winter Storm Watch | PHI | 16 hr |
| Jan 17, 3:39 AM EST | Winter Storm Warning | PHI | 18 hr |
| Jan 17, 3:39 AM EST | Winter Weather Advisory | PHI | 21 hr |
| Jan 24, 2:19 AM EST | Winter Weather Advisory | PHI | 7 hr |
| Jan 24, 3:43 PM EST | Winter Weather Advisory | PHI | 30 hr |
| Jan 30, 4:02 AM EST | High Wind Warning | PHI | 26 hr |
| Jan 30, 9:06 PM EST | Mesoscale Discussion | SPC | 54 min |
| Jan 31, 1:48 AM EST | Mesoscale Discussion | SPC | 57 min |
| Jan 31, 2:12 AM EST | Special Weather Statement | PHI | 63 min |
| Jan 31, 3:15 AM EST | Special Weather Statement | PHI | 2 hr |
| Jan 31, 6:01 AM EST | Wind Advisory | PHI | 12 hr |
| Feb 1, 3:53 AM EST | Winter Weather Advisory | PHI | 8 hr |
| Feb 7, 2:50 PM EST | Coastal Flood Watch | PHI | 13 hr |
| Feb 8, 3:34 AM EST | Wind Advisory | PHI | 24 hr |
| Feb 8, 3:58 AM EST | Coastal Flood Warning | PHI | 26 hr |
| Feb 8, 11:08 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Feb 9, 5:32 AM EST | Coastal Flood Advisory | PHI | 4 hr |
| Feb 26, 11:19 AM EST | Coastal Flood Advisory | PHI | 15 hr |
| Mar 4, 2:59 PM EST | Coastal Flood Watch | PHI | 25 hr |
| Mar 5, 4:34 AM EST | High Wind Watch | PHI | 11 hr |
| Mar 5, 3:30 PM EST | High Wind Warning | PHI | 32 hr |
| Mar 5, 3:30 PM EST | Wind Advisory | PHI | 30 hr |
| Mar 5, 3:41 PM EST | Coastal Flood Warning | PHI | 54 hr |
| Mar 6, 1:23 PM EST | Special Weather Statement | PHI | 52 min |
| Mar 6, 3:50 PM EST | Areal Flood Advisory | PHI | 4 hr |
| Mar 6, 5:55 PM EST | Coastal Flood Warning | PHI | 28 hr |
| Mar 6, 9:32 PM EST | Wind Advisory | PHI | 2 hr |
| Mar 6, 11:52 PM EST | Wind Advisory | PHI | 4 hr |
| Mar 7, 9:28 PM EST | Coastal Flood Advisory | PHI | 11 hr |
| Mar 8, 2:56 PM EST | Coastal Flood Warning | PHI | 18 hr |
| Mar 9, 2:34 PM EST | Coastal Flood Advisory | PHI | 7 hr |
| Mar 9, 9:07 PM EST | Coastal Flood Advisory | PHI | 4 hr |
| Mar 10, 1:25 AM EST | Coastal Flood Warning | PHI | 10 hr |
| Mar 11, 5:14 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Mar 20, 3:01 PM EDT | Winter Weather Advisory | PHI | 13 hr |
| Mar 24, 3:24 PM EDT | Coastal Flood Advisory | PHI | 29 hr |
| Mar 24, 3:44 PM EDT | Winter Weather Advisory | PHI | 29 hr |
| Apr 2, 3:33 PM EDT | Fire Weather Watch | PHI | 12 hr |
| Apr 5, 5:20 PM EDT | Frost Advisory | PHI | 14 hr |
| Apr 19, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 19, 7:13 PM EDT | Special Weather Statement | PHI | 3 hr |
| Apr 19, 8:09 PM EDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Apr 19, 9:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 20, 6:09 PM EDT | Frost Advisory | PHI | 12 hr |
| Apr 23, 1:36 PM EDT | Coastal Flood Advisory | PHI | 6 hr |
| May 11, 1:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 24, 12:35 AM EDT | Special Weather Statement | PHI | 85 min |
| Jun 3, 8:50 AM EDT | Areal Flood Advisory | PHI | 115 min |
| Jun 3, 2:36 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 6, 3:10 PM EDT | Flash Flood Watch | PHI | 36 hr |
| Jun 6, 8:42 PM EDT | Rip Current Statement | PHI | 48 hr |
| Jun 7, 1:00 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 7, 3:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 7, 3:45 PM EDT | Special Weather Statement | PHI | 60 min |
| Jun 7, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jun 7, 7:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 7, 10:21 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 10, 3:30 AM EDT | Flood Watch | PHI | 24 hr |
| Jun 10, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 2:02 PM EDT | Tornado Watch | SPC | 10 hr |
| Jun 10, 2:44 PM EDT | Special Weather Statement | PHI | 61 min |
| Jun 10, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | 60 min |
| Jun 10, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 10, 8:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 10, 10:52 PM EDT | Special Weather Statement | PHI | 53 min |
| Jun 10, 11:00 PM EDT | Tornado Warning | PHI | 30 min |
| Jun 11, 12:00 AM EDT | Special Weather Statement | PHI | 60 min |
| Jun 13, 1:49 AM EDT | Special Weather Statement | PHI | 41 min |
| Jun 13, 2:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 7:30 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 8:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 13, 9:55 AM EDT | Severe Thunderstorm Warning | PHI | 35 min |
| Jun 13, 10:24 AM EDT | Special Weather Statement | PHI | 81 min |
| Jun 13, 11:38 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 13, 12:19 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 4:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 13, 4:25 PM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Jun 13, 5:04 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 16, 6:48 PM EDT | Special Weather Statement | PHI | 57 min |
| Jun 16, 7:28 PM EDT | Special Weather Statement | PHI | 62 min |
| Jun 16, 10:02 PM EDT | Special Weather Statement | PHI | 58 min |
| Jun 16, 10:48 PM EDT | Special Weather Statement | PHI | 12 min |
| Jun 18, 2:29 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 18, 4:20 PM EDT | Special Weather Statement | PHI | 70 min |
| Jun 18, 4:23 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 24, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 25, 8:46 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 25, 11:50 PM EDT | Special Weather Statement | PHI | 55 min |
| Jun 26, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 27, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 27, 1:58 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 27, 3:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 28, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 3:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | 96 min |
| Jun 28, 6:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 28, 8:16 PM EDT | Special Weather Statement | PHI | 89 min |
| Jun 28, 8:56 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 29, 3:34 PM EDT | Flash Flood Watch | PHI | 3 days |
| Jun 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 8:10 AM EDT | Special Weather Statement | PHI | 65 min |
| Jul 1, 9:09 AM EDT | Areal Flood Advisory | PHI | 7 hr |
| Jul 1, 12:04 PM EDT | Special Weather Statement | PHI | 41 min |
| Jul 1, 4:59 PM EDT | Special Weather Statement | PHI | 61 min |
| Jul 2, 4:36 PM EDT | Special Weather Statement | PHI | 84 min |
| Jul 2, 4:56 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 2, 5:38 PM EDT | Special Weather Statement | PHI | 82 min |
| Jul 3, 10:22 AM EDT | Special Weather Statement | PHI | 23 min |
| Jul 12, 4:08 AM EDT | Flash Flood Watch | PHI | 17 hr |
| Jul 12, 7:21 AM EDT | Areal Flood Advisory | PHI | 10 hr |
| Jul 12, 9:20 AM EDT | Areal Flood Advisory | PHI | 8 hr |
| Jul 12, 1:24 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 12, 1:33 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 12, 5:18 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 14, 4:16 AM EDT | Excessive Heat Warning | PHI | 7 days |
| Jul 17, 3:27 PM EDT | Heat Advisory | PHI | 3 days |
| Jul 21, 3:17 PM EDT | Special Weather Statement | PHI | 58 min |
| Jul 21, 4:25 PM EDT | Special Weather Statement | PHI | 95 min |
| Jul 21, 4:50 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 21, 5:45 PM EDT | Special Weather Statement | PHI | 60 min |
| Jul 21, 6:28 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 22, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 22, 3:08 PM EDT | Coastal Flood Advisory | PHI | 8 hr |
| Jul 23, 2:22 AM EDT | Special Weather Statement | PHI | 2 hr |
| Jul 25, 3:53 PM EDT | Coastal Flood Advisory | PHI | 10 hr |
| Jul 28, 1:14 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jul 28, 1:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 28, 3:04 PM EDT | Special Weather Statement | PHI | 41 min |
| Jul 28, 3:55 PM EDT | Areal Flood Advisory | PHI | 110 min |
| Jul 28, 5:50 PM EDT | Special Weather Statement | PHI | 40 min |
| Jul 28, 8:06 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 28, 9:01 PM EDT | Special Weather Statement | PHI | 44 min |
| Jul 28, 9:38 PM EDT | Special Weather Statement | PHI | 67 min |
| Aug 1, 12:48 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 1, 12:50 PM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| Aug 1, 1:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Aug 1, 2:35 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 1, 2:57 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Aug 1, 5:58 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 9, 7:03 PM EDT | Special Weather Statement | PHI | 57 min |
| Aug 9, 7:40 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 9, 8:02 PM EDT | Special Weather Statement | PHI | 58 min |
| Aug 9, 8:32 PM EDT | Severe Thunderstorm Warning | PHI | 28 min |
| Aug 22, 12:05 AM EDT | Special Weather Statement | PHI | 115 min |
| Aug 22, 1:22 AM EDT | Special Weather Statement | PHI | 113 min |
| Aug 22, 8:32 AM EDT | Special Weather Statement | PHI | 58 min |
| Aug 22, 2:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 12, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 12, 7:26 PM EDT | Special Weather Statement | PHI | 64 min |
| Sep 12, 8:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Oct 7, 8:56 AM EDT | Tornado Watch | SPC | 8 hr |
| Oct 7, 12:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Oct 7, 2:18 PM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Oct 7, 3:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Oct 7, 3:21 PM EDT | Special Weather Statement | PHI | 39 min |
| Oct 8, 3:18 PM EDT | Coastal Flood Advisory | PHI | 24 hr |
| Oct 9, 4:12 AM EDT | Coastal Flood Watch | PHI | 11 hr |
| Oct 9, 3:41 PM EDT | Coastal Flood Advisory | PHI | 4 days |
| Oct 10, 9:28 AM EDT | Coastal Flood Warning | PHI | 6 hr |
| Oct 11, 12:27 AM EDT | Special Weather Statement | PHI | 93 min |
| Oct 11, 5:08 AM EDT | Special Weather Statement | PHI | 3 hr |
| Oct 12, 8:22 PM EDT | Special Weather Statement | PHI | 23 min |
| Oct 12, 8:23 PM EDT | Special Weather Statement | PHI | 22 min |
| Oct 25, 1:32 PM EDT | Freeze Warning | PHI | 19 hr |
| Nov 18, 1:07 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 18, 2:31 AM EST | Mesoscale Discussion | SPC | 89 min |
| Nov 18, 3:39 AM EST | Severe Thunderstorm Warning | PHI | 66 min |
| Nov 23, 3:43 PM EST | Red Flag Warning | PHI | 26 hr |
| Nov 26, 3:55 AM EST | Wind Advisory | PHI | 30 hr |
| Dec 3, 3:17 AM EST | Coastal Flood Advisory | PHI | 6 hr |
| Dec 5, 6:36 AM EST | Dense Fog Advisory | PHI | 3 hr |
| Dec 7, 4:03 PM EST | Winter Weather Advisory | PHI | 45 hr |
| Dec 9, 3:48 PM EST | Winter Weather Advisory | PHI | 22 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 | 10 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 28 |
| Special Weather Statement | 43 |
| Flooding | |
| Flash Flood Warning | 9 |
| Flash Flood Watch | 3 |
| Flood Watch | 1 |
| Areal Flood Advisory | 17 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 8 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Coast and beach | |
| Coastal Flood Warning | 6 |
| Coastal Flood Watch | 3 |
| Coastal Flood Advisory | 12 |
| Rip Current Statement | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.