Alert archive / Maryland / Cecil County
Weather alerts in Cecil County, Maryland, 2015
170 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Cecil County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 170
- Warnings
- 28
- Watches
- 19
- Advisories
- 64
- Busiest month
- June50 alerts
- Busiest day
- July 9, 20159 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Cecil County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 10 | 41% | 9 | 78% | 23 min |
| Flash flood warnings | 4 | 1 | 75% | 1 | 100% | 33 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 10 | 1 | 90% | 3 | 33% | 11 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 120 | 60 | 50% | 230 | 84% | 24 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 54 | 27 | 50% | 62 | 68% | 48 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, 7:40 PM EST | Special Weather Statement | PHI | 65 min |
| Jan 5, 3:26 PM EST | Winter Weather Advisory | PHI | 27 hr |
| Jan 6, 3:34 PM EST | Wind Chill Advisory | PHI | 45 hr |
| Jan 11, 3:55 AM EST | Winter Weather Advisory | PHI | 33 hr |
| Jan 18, 6:58 AM EST | Freezing Rain Advisory | PHI | 6 hr |
| Jan 18, 11:22 AM EST | Areal Flood Advisory | PHI | 6 hr |
| Jan 20, 3:36 PM EST | Winter Weather Advisory | PHI | 40 hr |
| Jan 21, 9:28 AM EST | Winter Weather Advisory | PHI | 23 hr |
| Jan 23, 4:12 AM EST | Winter Weather Advisory | PHI | 28 hr |
| Jan 25, 3:40 AM EST | Winter Storm Watch | PHI | 24 hr |
| Jan 26, 3:34 AM EST | Winter Weather Advisory | PHI | 21 hr |
| Jan 30, 3:35 AM EST | Wind Advisory | PHI | 26 hr |
| Feb 1, 4:33 AM EST | Winter Weather Advisory | PHI | 52 hr |
| Feb 2, 4:06 AM EST | Wind Advisory | PHI | 17 hr |
| Feb 8, 4:42 AM EST | Winter Weather Advisory | PHI | 53 hr |
| Feb 12, 3:54 AM EST | Wind Chill Advisory | PHI | 32 hr |
| Feb 12, 5:30 AM EST | Coastal Flood Advisory | PHI | 8 hr |
| Feb 12, 5:25 PM EST | Wind Advisory | PHI | 8 hr |
| Feb 13, 4:16 AM EST | High Wind Watch | PHI | 23 hr |
| Feb 13, 4:15 PM EST | Winter Weather Advisory | PHI | 42 hr |
| Feb 14, 3:40 AM EST | Wind Chill Advisory | PHI | 55 hr |
| Feb 14, 3:43 AM EST | High Wind Warning | PHI | 32 hr |
| Feb 15, 10:14 AM EST | Wind Advisory | PHI | 5 hr |
| Feb 15, 3:52 PM EST | Winter Storm Watch | PHI | 12 hr |
| Feb 16, 4:13 AM EST | Winter Storm Warning | PHI | 30 hr |
| Feb 18, 3:53 AM EST | Wind Chill Advisory | PHI | 60 hr |
| Feb 20, 3:30 PM EST | Winter Weather Advisory | PHI | 39 hr |
| Feb 21, 4:37 AM EST | Winter Storm Warning | PHI | 28 hr |
| Feb 21, 6:24 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 25, 4:14 AM EST | Winter Weather Advisory | PHI | 32 hr |
| Feb 28, 3:19 PM EST | Winter Weather Advisory | PHI | 41 hr |
| Mar 1, 3:43 AM EST | Winter Storm Warning | PHI | 18 hr |
| Mar 1, 1:57 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 2, 4:00 PM EST | Winter Weather Advisory | PHI | 41 hr |
| Mar 3, 3:04 PM EST | Winter Storm Watch | PHI | 25 hr |
| Mar 4, 3:47 AM EST | Winter Storm Warning | PHI | 41 hr |
| Mar 4, 8:08 PM EST | Dense Fog Advisory | PHI | 3 hr |
| Mar 5, 7:58 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 5, 11:55 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 10, 6:12 PM EDT | Dense Fog Advisory | PHI | 11 hr |
| Mar 19, 3:32 AM EDT | Winter Weather Advisory | PHI | 51 hr |
| Mar 26, 6:12 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 20, 3:08 PM EDT | Tornado Watch | SPC | 9 hr |
| Apr 20, 5:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 20, 8:52 PM EDT | Special Weather Statement | PHI | 53 min |
| Apr 20, 9:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 20, 9:40 PM EDT | Special Weather Statement | PHI | 35 min |
| Apr 20, 10:18 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Apr 21, 1:16 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Apr 22, 12:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Apr 22, 1:33 PM EDT | Special Weather Statement | PHI | 57 min |
| Apr 22, 2:22 PM EDT | Special Weather Statement | PHI | 113 min |
| Apr 23, 4:04 AM EDT | Freeze Watch | PHI | 35 hr |
| Apr 24, 3:28 PM EDT | Freeze Warning | PHI | 17 hr |
| May 16, 1:35 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 6:24 PM EDT | Special Weather Statement | PHI | 66 min |
| May 16, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| May 18, 2:01 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 18, 2:36 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 18, 4:57 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 18, 9:01 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 27, 12:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 12:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 2:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 3:13 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 1, 4:20 AM EDT | Flash Flood Watch | PHI | 26 hr |
| Jun 1, 5:35 PM EDT | Severe Thunderstorm Warning | PHI | 70 min |
| Jun 1, 5:56 PM EDT | Areal Flood Advisory | PHI | 6 hr |
| Jun 1, 6:29 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jun 8, 9:01 PM EDT | Special Weather Statement | PHI | 29 min |
| Jun 8, 9:08 PM EDT | Special Weather Statement | PHI | 112 min |
| Jun 14, 4:54 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 14, 4:06 PM EDT | Special Weather Statement | PHI | 24 min |
| Jun 14, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | 38 min |
| Jun 14, 4:40 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 14, 6:32 PM EDT | Special Weather Statement | PHI | 28 min |
| Jun 14, 7:08 PM EDT | Mesoscale Discussion | SPC | 52 min |
| Jun 14, 7:21 PM EDT | Special Weather Statement | PHI | 39 min |
| Jun 14, 8:10 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 14, 8:42 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jun 16, 12:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 1:42 AM EDT | Special Weather Statement | PHI | 63 min |
| Jun 19, 2:18 PM EDT | Flood Watch | PHI | 40 hr |
| Jun 20, 5:18 PM EDT | Special Weather Statement | PHI | 42 min |
| Jun 20, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jun 20, 6:07 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 20, 6:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 20, 8:31 PM EDT | Special Weather Statement | PHI | 3 hr |
| Jun 20, 8:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 20, 8:56 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 20, 9:49 PM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Jun 21, 12:47 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 21, 5:12 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 22, 3:41 PM EDT | Heat Advisory | PHI | 26 hr |
| Jun 23, 1:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 23, 4:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 5:19 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 23, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jun 23, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| Jun 23, 5:44 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 23, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 23, 7:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 26, 3:02 PM EDT | Flood Watch | PHI | 33 hr |
| Jun 27, 5:21 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 27, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | 47 min |
| Jun 27, 7:42 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 30, 12:31 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:34 PM EDT | Special Weather Statement | PHI | 26 min |
| Jun 30, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | 49 min |
| Jun 30, 3:08 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 30, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | 37 min |
| Jun 30, 3:54 PM EDT | Flash Flood Watch | PHI | 13 hr |
| Jun 30, 4:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 12:56 AM EDT | Special Weather Statement | PHI | 94 min |
| Jul 1, 1:13 AM EDT | Severe Thunderstorm Warning | PHI | 62 min |
| Jul 1, 1:42 AM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jul 1, 2:14 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 6, 5:23 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 6, 6:05 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 8, 1:59 PM EDT | Special Weather Statement | PHI | 31 min |
| Jul 8, 2:58 PM EDT | Special Weather Statement | PHI | 32 min |
| Jul 8, 9:15 PM EDT | Special Weather Statement | PHI | 30 min |
| Jul 8, 9:43 PM EDT | Special Weather Statement | PHI | 32 min |
| Jul 9, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 3:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 9, 4:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 9, 4:57 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 9, 6:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 9, 6:50 PM EDT | Severe Thunderstorm Warning | PHI | 40 min |
| Jul 9, 7:29 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Jul 14, 4:15 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 14, 4:24 AM EDT | Special Weather Statement | PHI | 36 min |
| Jul 15, 2:31 AM EDT | Special Weather Statement | PHI | 44 min |
| Jul 18, 12:44 PM EDT | Heat Advisory | PHI | 55 hr |
| Jul 27, 2:31 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 30, 2:43 PM EDT | Special Weather Statement | PHI | 77 min |
| Jul 30, 3:03 PM EDT | Special Weather Statement | PHI | 57 min |
| Aug 4, 3:29 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 4:20 AM EDT | Severe Thunderstorm Warning | PHI | 33 min |
| Aug 4, 5:37 AM EDT | Severe Thunderstorm Warning | PHI | 34 min |
| Aug 4, 3:48 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 11, 1:30 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 11, 2:54 PM EDT | Special Weather Statement | PHI | 66 min |
| Aug 11, 3:30 PM EDT | Special Weather Statement | PHI | 60 min |
| Aug 20, 2:46 PM EDT | Flash Flood Watch | PHI | 13 hr |
| Aug 20, 3:26 PM EDT | Special Weather Statement | PHI | 49 min |
| Aug 20, 7:14 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 20, 8:08 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 20, 8:50 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 24, 8:04 PM EDT | Special Weather Statement | PHI | 41 min |
| Aug 24, 8:52 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| Sep 10, 4:46 AM EDT | Special Weather Statement | PHI | 119 min |
| Sep 10, 12:34 PM EDT | Flash Flood Watch | PHI | 6 hr |
| Oct 2, 10:43 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Oct 9, 3:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 9, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Oct 9, 4:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Oct 9, 5:17 PM EDT | Special Weather Statement | PHI | 43 min |
| Oct 16, 3:12 PM EDT | Freeze Watch | PHI | 24 hr |
| Oct 17, 2:48 PM EDT | Frost Advisory | PHI | 18 hr |
| Oct 17, 2:48 PM EDT | Freeze Warning | PHI | 42 hr |
| Nov 12, 11:04 AM EST | Coastal Flood Advisory | PHI | 10 hr |
| Dec 13, 9:46 PM EST | Dense Fog Advisory | PHI | 12 hr |
| Dec 17, 7:37 PM EST | Dense Fog Advisory | PHI | 110 min |
| Dec 23, 6:19 PM EST | Areal Flood Advisory | PHI | 116 min |
| Dec 25, 1:12 AM EST | Dense Fog Advisory | PHI | 9 hr |
| Dec 26, 12:22 AM EST | Dense Fog Advisory | PHI | 3 hr |
| Dec 27, 3:00 AM EST | Dense Fog Advisory | PHI | 6 hr |
| Dec 30, 1:18 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 | 17 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 30 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Areal Flood Advisory | 28 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 14 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
| Coast and beach | |
| Coastal Flood Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.