Alert archive / Maryland / Charles County
Weather alerts in Charles County, Maryland, 2022
151 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Charles County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 151
- Warnings
- 49
- Watches
- 24
- Advisories
- 37
- Busiest month
- July35 alerts
- Busiest day
- May 27, 20229 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 3 tornado warnings covering Charles County in 2022 had a tornado report inside them.
Charles County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 39 | 31 | 21% | 30 | 77% | 22 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 38 | 6 | 84% | 10 | 80% | 9 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 413 | 300 | 27% | 1,177 | 78% | 21 min |
| NWS Baltimore/Washington: flash flood warnings | 77 | 34 | 56% | 84 | 88% | 90 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 1, 1:48 AM EST | Coastal Flood Advisory | LWX | 20 hr |
| Jan 2, 4:28 AM EST | Winter Storm Watch | LWX | 8 hr |
| Jan 2, 4:28 AM EST | Winter Storm Warning | LWX | 36 hr |
| Jan 3, 5:13 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 3, 11:06 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 4, 9:04 AM EST | Coastal Flood Advisory | LWX | 39 hr |
| Jan 4, 2:41 PM EST | Winter Weather Advisory | LWX | 18 hr |
| Jan 5, 2:33 PM EST | Winter Weather Advisory | LWX | 39 hr |
| Jan 7, 2:02 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 15, 12:30 PM EST | Winter Weather Advisory | LWX | 34 hr |
| Jan 16, 8:14 PM EST | Coastal Flood Advisory | LWX | 21 hr |
| Jan 16, 8:33 PM EST | Wind Advisory | LWX | 22 hr |
| Jan 19, 1:09 PM EST | Winter Weather Advisory | LWX | 22 hr |
| Jan 27, 2:28 PM EST | Winter Weather Advisory | LWX | 45 hr |
| Feb 17, 3:49 AM EST | Wind Advisory | LWX | 30 hr |
| Feb 18, 2:18 PM EST | Wind Advisory | LWX | 29 hr |
| Mar 6, 7:27 PM EST | Wind Advisory | LWX | 30 hr |
| Mar 11, 3:57 AM EST | Winter Weather Advisory | LWX | 35 hr |
| Mar 11, 3:26 PM EST | Wind Advisory | LWX | 34 hr |
| Mar 17, 11:16 PM EDT | Dense Fog Advisory | LWX | 4 min |
| Mar 17, 11:20 PM EDT | Dense Fog Advisory | LWX | 11 hr |
| Mar 23, 11:04 PM EDT | Flood Watch | LWX | 3 hr |
| Mar 31, 1:41 PM EDT | Wind Advisory | LWX | 6 hr |
| Mar 31, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 31, 7:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 9, 9:42 PM EDT | Frost Advisory | LWX | 35 hr |
| Apr 16, 6:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 26, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 8, 9:07 PM EDT | Coastal Flood Advisory | LWX | 4 days |
| May 14, 10:45 PM EDT | Dense Fog Advisory | LWX | 10 hr |
| May 16, 12:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 16, 2:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 3:40 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 16, 4:07 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| May 16, 4:35 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| May 22, 12:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 22, 6:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 22, 7:04 PM EDT | Severe Thunderstorm Warning | LWX | 56 min |
| May 22, 7:26 PM EDT | Severe Thunderstorm Warning | LWX | 64 min |
| May 22, 8:28 PM EDT | Severe Thunderstorm Warning | LWX | 32 min |
| May 27, 6:24 AM EDT | Tornado Watch | SPC | 8 hr |
| May 27, 8:13 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 10:59 AM EDT | Mesoscale Discussion | SPC | 91 min |
| May 27, 11:43 AM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| May 27, 12:10 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| May 27, 12:27 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| May 27, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 27, 7:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 7:51 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| May 27, 8:30 PM EDT | Tornado Warning | LWX | 9 min |
| May 27, 8:37 PM EDT | Tornado Warning | LWX | 23 min |
| Jun 2, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 2, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 4:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 2, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Jun 2, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Jun 8, 2:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 8, 6:13 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Jun 8, 6:50 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Jun 8, 6:53 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Jun 8, 10:00 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Jun 9, 1:39 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 13, 9:02 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| Jun 16, 3:29 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 16, 4:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 17, 3:37 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 22, 12:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 22, 1:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 1:58 PM EDT | Severe Thunderstorm Warning | LWX | 62 min |
| Jun 22, 3:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 22, 6:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 1, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 1, 3:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 1:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 2, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 2, 4:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 5, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 7, 12:25 AM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jul 9, 3:17 AM EDT | Areal Flood Warning | LWX | 7 hr |
| Jul 12, 6:34 AM EDT | Flood Watch | LWX | 18 hr |
| Jul 12, 12:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 2:12 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 12, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | 64 min |
| Jul 12, 8:06 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jul 12, 8:29 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Jul 13, 12:26 AM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| Jul 14, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jul 16, 1:36 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 16, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | 52 min |
| Jul 16, 5:36 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jul 17, 2:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 17, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jul 20, 12:51 PM EDT | Heat Advisory | LWX | 29 hr |
| Jul 21, 12:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 2:37 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jul 21, 3:13 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Jul 23, 1:13 PM EDT | Heat Advisory | LWX | 31 hr |
| Jul 23, 7:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 25, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 25, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 25, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 25, 4:11 PM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| Jul 25, 5:15 PM EDT | Severe Thunderstorm Warning | LWX | 60 min |
| Jul 25, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | 64 min |
| Jul 29, 12:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 1:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 3, 1:02 PM EDT | Heat Advisory | LWX | 31 hr |
| Aug 4, 1:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 4, 7:15 PM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| Aug 5, 10:20 AM EDT | Flood Watch | LWX | 11 hr |
| Aug 5, 2:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 5, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Aug 10, 3:07 AM EDT | Flood Watch | LWX | 20 hr |
| Aug 10, 1:01 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 10, 3:51 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Aug 10, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | 26 min |
| Aug 10, 5:45 PM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| Aug 10, 6:14 PM EDT | Severe Thunderstorm Warning | LWX | 29 min |
| Aug 10, 6:22 PM EDT | Areal Flood Warning | LWX | 6 hr |
| Aug 22, 4:10 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 30, 1:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | 32 min |
| Aug 30, 4:50 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| Sep 7, 10:41 PM EDT | Coastal Flood Advisory | LWX | 19 hr |
| Sep 8, 8:34 PM EDT | Coastal Flood Advisory | LWX | 4 days |
| Sep 11, 9:04 PM EDT | Coastal Flood Advisory | LWX | 14 hr |
| Sep 12, 2:22 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 12, 4:28 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Sep 12, 4:52 PM EDT | Tornado Warning | LWX | 23 min |
| Sep 12, 5:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 12, 6:28 PM EDT | Severe Thunderstorm Warning | LWX | 32 min |
| Sep 25, 11:37 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 25, 2:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 30, 4:03 AM EDT | Coastal Flood Advisory | LWX | 47 hr |
| Oct 18, 12:36 PM EDT | Frost Advisory | LWX | 20 hr |
| Oct 19, 1:32 PM EDT | Freeze Warning | LWX | 19 hr |
| Oct 20, 1:59 PM EDT | Frost Advisory | LWX | 19 hr |
| Oct 29, 1:00 PM EDT | Frost Advisory | LWX | 21 hr |
| Nov 4, 5:30 AM EDT | Dense Fog Advisory | LWX | 2 hr |
| Nov 4, 7:51 AM EDT | Dense Fog Advisory | LWX | 2 hr |
| Nov 11, 6:15 AM EST | Tornado Watch | SPC | 12 hr |
| Nov 11, 2:30 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 12, 2:43 PM EST | Freeze Watch | LWX | 13 hr |
| Nov 13, 3:58 AM EST | Freeze Warning | LWX | 29 hr |
| Dec 15, 2:00 AM EST | Coastal Flood Advisory | LWX | 33 hr |
| Dec 21, 3:22 PM EST | Flood Watch | LWX | 34 hr |
| Dec 22, 12:37 PM EST | Wind Advisory | LWX | 29 hr |
| Dec 22, 2:05 PM EST | Coastal Flood Advisory | LWX | 27 hr |
| Dec 22, 2:55 PM EST | Wind Chill Advisory | LWX | 67 hr |
| Dec 31, 5:56 AM EST | Dense Fog Advisory | LWX | 16 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 | 39 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 15 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 41 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flood Watch | 5 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Coast and beach | |
| Coastal Flood Advisory | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.