Alert archive / Maryland / Kent County
Weather alerts in Kent County, Maryland, 2019
179 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Kent County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 179
- Warnings
- 50
- Watches
- 26
- Advisories
- 41
- Busiest month
- July39 alerts
- Busiest day
- July 11, 20199 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 4 tornado warnings covering Kent County in 2019 had a tornado report inside them.
Kent County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 37 | 27 | 27% | 15 | 73% | 27 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 32 | 4 | 88% | 17 | 35% | 5 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 410 | 276 | 33% | 1,175 | 87% | 25 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 86 | 51 | 41% | 211 | 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 11, 3:21 PM EST | Winter Weather Advisory | PHI | 58 hr |
| Jan 12, 3:17 PM EST | Winter Storm Warning | PHI | 34 hr |
| Jan 20, 3:38 AM EST | Wind Chill Advisory | PHI | 50 hr |
| Jan 20, 9:49 AM EST | Wind Advisory | PHI | 30 hr |
| Jan 23, 3:07 PM EST | Wind Advisory | PHI | 21 hr |
| Jan 24, 11:53 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Jan 29, 9:08 PM EST | Wind Chill Advisory | PHI | 37 hr |
| Jan 30, 3:32 AM EST | Wind Advisory | PHI | 17 hr |
| Jan 30, 12:55 PM EST | Special Weather Statement | PHI | 80 min |
| Feb 1, 2:55 PM EST | Winter Weather Advisory | PHI | 4 hr |
| Feb 8, 1:07 AM EST | Dense Fog Advisory | PHI | 4 hr |
| Feb 10, 3:36 AM EST | Winter Weather Advisory | PHI | 36 hr |
| Feb 11, 4:37 AM EST | Winter Weather Advisory | PHI | 37 hr |
| Feb 18, 3:16 PM EST | Winter Storm Watch | PHI | 24 hr |
| Feb 19, 2:55 PM EST | Winter Storm Warning | PHI | 34 hr |
| Feb 23, 4:02 AM EST | High Wind Watch | PHI | 23 hr |
| Feb 23, 2:58 PM EST | High Wind Warning | PHI | 48 hr |
| Feb 24, 3:24 AM EST | Wind Advisory | PHI | 24 hr |
| Feb 25, 2:58 PM EST | Wind Advisory | PHI | 3 hr |
| Feb 28, 2:50 PM EST | Winter Weather Advisory | PHI | 19 hr |
| Mar 2, 3:35 AM EST | Winter Storm Watch | PHI | 24 hr |
| Mar 3, 4:01 AM EST | Winter Weather Advisory | PHI | 24 hr |
| Mar 21, 3:22 AM EDT | Flood Watch | PHI | 24 hr |
| Mar 22, 5:57 PM EDT | Special Weather Statement | PHI | 48 min |
| Apr 1, 3:15 AM EDT | Freeze Warning | PHI | 29 hr |
| Apr 3, 3:16 AM EDT | Red Flag Warning | PHI | 20 hr |
| Apr 14, 11:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 15, 1:05 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 15, 2:15 AM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Apr 15, 2:25 AM EDT | Severe Thunderstorm Warning | PHI | 50 min |
| Apr 15, 2:43 AM EDT | Tornado Warning | PHI | 32 min |
| Apr 15, 3:07 AM EDT | Severe Thunderstorm Warning | PHI | 38 min |
| Apr 15, 3:19 AM EDT | Wind Advisory | PHI | 18 hr |
| Apr 15, 3:50 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Apr 18, 3:17 PM EDT | Flash Flood Watch | PHI | 42 hr |
| Apr 19, 4:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Apr 20, 4:30 AM EDT | Special Weather Statement | PHI | 30 min |
| Apr 20, 5:46 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Apr 26, 11:37 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Apr 26, 1:33 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 26, 2:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 26, 3:32 PM EDT | Severe Thunderstorm Warning | PHI | 58 min |
| Apr 26, 4:01 PM EDT | Tornado Warning | PHI | 29 min |
| Apr 26, 4:24 PM EDT | Tornado Warning | PHI | 36 min |
| Apr 26, 4:28 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Apr 26, 4:59 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 2, 4:19 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| May 2, 3:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 4:23 PM EDT | Special Weather Statement | PHI | 52 min |
| May 2, 4:48 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| May 3, 8:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| May 4, 3:11 PM EDT | Flash Flood Watch | PHI | 21 hr |
| May 23, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 23, 3:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| May 23, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| May 26, 11:14 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 26, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 5:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 8:32 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 26, 9:11 PM EDT | Special Weather Statement | PHI | 34 min |
| May 26, 9:45 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| May 26, 10:01 PM EDT | Severe Thunderstorm Warning | PHI | 59 min |
| May 26, 10:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| May 28, 7:50 AM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| May 28, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 28, 1:48 PM EDT | Tornado Watch | SPC | 8 hr |
| May 28, 5:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| May 28, 8:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 29, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | 34 min |
| May 30, 12:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 30, 3:42 PM EDT | Special Weather Statement | PHI | 33 min |
| May 30, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| May 30, 3:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 30, 4:08 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| May 30, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | 43 min |
| Jun 2, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | 44 min |
| Jun 2, 7:08 PM EDT | Special Weather Statement | PHI | 37 min |
| Jun 2, 7:36 PM EDT | Severe Thunderstorm Warning | PHI | 39 min |
| Jun 13, 5:08 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 13, 7:24 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 16, 1:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 17, 3:51 AM EDT | Flash Flood Watch | PHI | 47 hr |
| Jun 17, 2:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 17, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 12:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 18, 2:11 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 19, 3:17 AM EDT | Flash Flood Watch | PHI | 43 hr |
| Jun 20, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 7:55 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 28, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | 49 min |
| Jun 29, 2:04 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 3:59 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jun 29, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 29, 4:14 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jun 29, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jun 29, 4:58 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jun 29, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | 79 min |
| Jun 29, 11:58 PM EDT | Special Weather Statement | PHI | 32 min |
| Jul 2, 5:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 12:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 4, 2:11 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 4, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jul 5, 12:02 AM EDT | Special Weather Statement | PHI | 58 min |
| Jul 6, 1:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 5:49 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 6, 8:23 PM EDT | Special Weather Statement | PHI | 52 min |
| Jul 6, 9:17 PM EDT | Severe Thunderstorm Warning | PHI | 43 min |
| Jul 11, 12:33 PM EDT | Special Weather Statement | PHI | 57 min |
| Jul 11, 12:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 11, 4:55 PM EDT | Special Weather Statement | PHI | 65 min |
| Jul 11, 5:12 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 11, 5:44 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Jul 11, 5:45 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 11, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 6:15 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 11, 6:39 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 16, 2:44 PM EDT | Excessive Heat Warning | PHI | 5 days |
| Jul 16, 2:44 PM EDT | Heat Advisory | PHI | 29 hr |
| Jul 17, 1:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 3:14 PM EDT | Excessive Heat Watch | PHI | 24 hr |
| Jul 17, 4:51 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 17, 6:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 17, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jul 18, 1:49 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 3:15 AM EDT | Flash Flood Watch | PHI | 51 hr |
| Jul 21, 3:09 PM EDT | Heat Advisory | PHI | 27 hr |
| Jul 21, 6:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 21, 9:44 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jul 22, 1:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 22, 2:17 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 22, 4:16 PM EDT | Severe Thunderstorm Warning | PHI | 59 min |
| Jul 22, 4:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 22, 4:21 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jul 22, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Jul 22, 8:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 31, 1:17 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 31, 4:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 31, 8:00 PM EDT | Special Weather Statement | PHI | 30 min |
| Aug 1, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | 54 min |
| Aug 2, 5:11 PM EDT | Special Weather Statement | PHI | 34 min |
| Aug 7, 1:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 7, 2:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 7, 3:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 7, 4:07 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| Aug 7, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | 63 min |
| Aug 7, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Aug 18, 2:26 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 18, 3:50 PM EDT | Special Weather Statement | PHI | 25 min |
| Aug 21, 3:27 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 22, 8:36 PM EDT | Special Weather Statement | PHI | 54 min |
| Aug 22, 8:54 PM EDT | Severe Thunderstorm Warning | PHI | 66 min |
| Aug 22, 9:21 PM EDT | Severe Thunderstorm Warning | PHI | 54 min |
| Aug 22, 10:11 PM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Sep 2, 2:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 2, 7:04 PM EDT | Special Weather Statement | PHI | 41 min |
| Sep 4, 8:13 PM EDT | Severe Thunderstorm Warning | PHI | 62 min |
| Sep 12, 2:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Sep 28, 5:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 6, 2:16 PM EDT | Coastal Flood Advisory | PHI | 13 hr |
| Oct 10, 3:36 PM EDT | Coastal Flood Advisory | PHI | 65 hr |
| Oct 15, 3:27 PM EDT | Wind Advisory | PHI | 51 hr |
| Oct 16, 4:47 PM EDT | Coastal Flood Advisory | PHI | 7 hr |
| Oct 22, 5:23 PM EDT | Coastal Flood Advisory | PHI | 13 hr |
| Oct 27, 10:59 AM EDT | Special Weather Statement | PHI | 61 min |
| Oct 31, 3:08 PM EDT | Coastal Flood Advisory | PHI | 11 hr |
| Oct 31, 3:16 PM EDT | Wind Advisory | PHI | 18 hr |
| Oct 31, 7:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 31, 7:56 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 31, 9:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 31, 10:47 PM EDT | Severe Thunderstorm Warning | PHI | 73 min |
| Oct 31, 11:10 PM EDT | Tornado Warning | PHI | 35 min |
| Nov 1, 9:12 AM EDT | Freeze Warning | PHI | 25 hr |
| Nov 27, 3:37 AM EST | Wind Advisory | PHI | 38 hr |
| Dec 17, 12:04 PM EST | Dense Fog Advisory | PHI | 6 hr |
| Dec 26, 2:48 AM EST | Dense Fog Advisory | PHI | 9 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 | 37 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 13 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 44 |
| Special Weather Statement | 18 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 5 |
| Flood Watch | 1 |
| Areal Flood Advisory | 13 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Coast and beach | |
| Coastal Flood Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.