Alert archive / Maryland / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Maryland, 2024
212 severe thunderstorm warnings in 2024. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Severe Thunderstorm Warnings
- 212
- Busiest month
- July62 severe thunderstorm warnings
- Busiest day
- June 30, 202418 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
132 of 209 severe thunderstorm warnings covering Maryland in 2024 had a qualifying storm report inside them; 209 of 243 hail, wind and damage reports fell inside a warning, on average 21 minutes after it went out.
Maryland, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 209 | 132 | 37% | 243 | 86% | 21 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: severe thunderstorm warnings | 306 | 203 | 34% | 536 | 85% | 19 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 202 | 148 | 27% | 315 | 87% | 23 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 219 | 137 | 37% | 463 | 90% | 23 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 | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 1:34 AM EDT | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 27 min |
| Apr 3, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 29 min |
| Apr 3, 4:51 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 39 min |
| Apr 3, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 42 min |
| Apr 3, 5:05 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 21 min |
| Apr 15, 2:06 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 39 min |
| Apr 15, 3:25 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 35 min |
| Apr 15, 3:27 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 48 min |
| Apr 15, 3:42 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 48 min |
| Apr 15, 4:15 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 45 min |
| Apr 15, 4:25 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 35 min |
| Apr 15, 4:38 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 52 min |
| Apr 15, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 65 min |
| Apr 15, 5:18 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 30 min |
| Apr 15, 6:05 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Worcester | 25 min |
| Apr 15, 6:51 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 39 min |
| May 10, 1:04 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 17 min |
| May 11, 7:46 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 59 min |
| May 11, 9:22 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 23 min |
| May 11, 9:42 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 33 min |
| May 12, 12:13 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 20 min |
| May 12, 1:26 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 19 min |
| May 22, 2:52 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 23 min |
| May 23, 6:20 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 25 min |
| May 23, 6:40 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 17 min |
| May 23, 8:11 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 14 min |
| May 24, 9:17 AM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 43 min |
| May 25, 6:38 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 37 min |
| May 25, 7:14 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 31 min |
| May 25, 7:45 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 30 min |
| May 25, 8:08 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard | 33 min |
| May 26, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 17 min |
| May 26, 7:31 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 59 min |
| May 26, 8:17 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 58 min |
| May 26, 9:05 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 55 min |
| May 26, 9:56 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Frederick, Washington | 49 min |
| May 26, 10:38 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 37 min |
| May 27, 3:49 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| May 27, 4:16 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 59 min |
| May 27, 5:38 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 37 min |
| May 27, 6:10 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 35 min |
| May 27, 6:16 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 44 min |
| May 27, 6:51 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 39 min |
| May 27, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, City of Baltimore | 65 min |
| May 27, 7:40 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 50 min |
| May 27, 8:11 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore | 49 min |
| May 27, 8:33 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 42 min |
| May 27, 9:27 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 48 min |
| May 29, 4:03 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 27 min |
| May 29, 4:29 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 31 min |
| May 29, 4:32 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 43 min |
| May 29, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 50 min |
| May 29, 5:15 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 30 min |
| Jun 6, 6:56 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 37 min |
| Jun 14, 5:03 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 27 min |
| Jun 14, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 39 min |
| Jun 14, 11:39 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 28 min |
| Jun 23, 4:15 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 8 min |
| Jun 23, 4:47 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 28 min |
| Jun 23, 8:35 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 25 min |
| Jun 26, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 32 min |
| Jun 26, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 43 min |
| Jun 26, 5:51 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 39 min |
| Jun 26, 6:28 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 47 min |
| Jun 26, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 18 min |
| Jun 26, 6:37 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 38 min |
| Jun 26, 7:03 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 42 min |
| Jun 26, 7:49 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico, Worcester | 41 min |
| Jun 26, 9:04 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 41 min |
| Jun 26, 9:10 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 50 min |
| Jun 26, 9:11 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 34 min |
| Jun 26, 9:36 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 24 min |
| Jun 26, 10:09 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 23 min |
| Jun 26, 10:44 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 46 min |
| Jun 26, 10:44 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 31 min |
| Jun 29, 3:14 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 42 min |
| Jun 29, 7:49 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 26 min |
| Jun 29, 9:30 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 30 min |
| Jun 29, 9:49 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard, Montgomery | 26 min |
| Jun 29, 10:15 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 30 min |
| Jun 30, 3:44 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 46 min |
| Jun 30, 4:03 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 42 min |
| Jun 30, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 22 min |
| Jun 30, 5:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, City of Baltimore | 42 min |
| Jun 30, 5:37 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 23 min |
| Jun 30, 5:57 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 21 min |
| Jun 30, 5:59 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 32 min |
| Jun 30, 6:04 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 41 min |
| Jun 30, 6:08 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 52 min |
| Jun 30, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 30 min |
| Jun 30, 6:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 37 min |
| Jun 30, 7:08 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 67 min |
| Jun 30, 7:14 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 31 min |
| Jun 30, 7:23 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 52 min |
| Jun 30, 7:24 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert | 25 min |
| Jun 30, 8:05 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 55 min |
| Jun 30, 8:08 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 35 min |
| Jun 30, 8:13 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's, Saint Mary's | 32 min |
| Jun 30, 8:35 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 25 min |
| Jun 30, 8:58 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 37 min |
| Jun 30, 11:43 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 32 min |
| Jul 10, 7:04 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Jul 10, 7:17 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 43 min |
| Jul 10, 7:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 24 min |
| Jul 10, 7:53 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 41 min |
| Jul 14, 2:45 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 45 min |
| Jul 14, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 31 min |
| Jul 14, 4:01 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 44 min |
| Jul 14, 4:31 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 44 min |
| Jul 15, 4:40 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 50 min |
| Jul 15, 4:57 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 33 min |
| Jul 15, 5:06 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 39 min |
| Jul 15, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 46 min |
| Jul 15, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 31 min |
| Jul 16, 7:52 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 53 min |
| Jul 16, 8:14 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 31 min |
| Jul 16, 8:27 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 33 min |
| Jul 16, 8:58 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 62 min |
| Jul 16, 9:23 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 52 min |
| Jul 16, 10:02 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 28 min |
| Jul 16, 10:04 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 41 min |
| Jul 16, 10:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 58 min |
| Jul 16, 11:08 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 67 min |
| Jul 17, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 23 min |
| Jul 17, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Montgomery, Prince George's | 30 min |
| Jul 17, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 34 min |
| Jul 17, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 45 min |
| Jul 17, 6:47 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 43 min |
| Jul 17, 7:02 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 43 min |
| Jul 17, 7:56 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 44 min |
| Jul 17, 7:58 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 32 min |
| Jul 17, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 62 min |
| Jul 17, 8:11 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 49 min |
| Jul 17, 8:50 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 40 min |
| Jul 17, 9:10 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 21 min |
| Jul 20, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 45 min |
| Jul 21, 8:01 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 44 min |
| Jul 22, 7:30 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 26 min |
| Jul 22, 8:24 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 51 min |
| Jul 29, 5:01 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 29 min |
| Jul 29, 6:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 30 min |
| Jul 29, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 34 min |
| Jul 29, 7:09 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 21 min |
| Jul 29, 7:29 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 46 min |
| Jul 29, 8:50 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 25 min |
| Jul 31, 3:12 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 48 min |
| Jul 31, 4:00 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 17 min |
| Jul 31, 4:29 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 31 min |
| Jul 31, 4:30 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 60 min |
| Jul 31, 5:01 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 32 min |
| Jul 31, 5:26 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 49 min |
| Jul 31, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 41 min |
| Jul 31, 6:24 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 36 min |
| Jul 31, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 46 min |
| Jul 31, 6:34 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's | 41 min |
| Jul 31, 7:19 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 41 min |
| Jul 31, 7:59 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 30 min |
| Aug 2, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 46 min |
| Aug 2, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 65 min |
| Aug 2, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 27 min |
| Aug 2, 4:51 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 69 min |
| Aug 2, 6:06 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 39 min |
| Aug 2, 7:26 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford, Howard, City of Baltimore | 49 min |
| Aug 3, 1:47 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 23 min |
| Aug 3, 3:11 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 31 min |
| Aug 3, 3:51 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick | 39 min |
| Aug 3, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, Howard, City of Baltimore | 48 min |
| Aug 3, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 25 min |
| Aug 3, 5:22 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 53 min |
| Aug 3, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 51 min |
| Aug 3, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 32 min |
| Aug 3, 6:09 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 36 min |
| Aug 3, 6:13 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 32 min |
| Aug 3, 6:36 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 28 min |
| Aug 3, 7:01 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 33 min |
| Aug 3, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 61 min |
| Aug 3, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 60 min |
| Aug 3, 7:21 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 39 min |
| Aug 3, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 40 min |
| Aug 6, 1:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 29 min |
| Aug 6, 2:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 24 min |
| Aug 6, 2:31 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 32 min |
| Aug 17, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 33 min |
| Aug 17, 5:53 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 10 min |
| Aug 18, 2:54 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico | 36 min |
| Aug 18, 6:44 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 31 min |
| Aug 18, 7:03 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 27 min |
| Aug 18, 7:58 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 47 min |
| Aug 19, 5:58 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Worcester | 62 min |
| Aug 26, 2:29 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 46 min |
| Aug 26, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 51 min |
| Aug 28, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 26 min |
| Aug 29, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 38 min |
| Aug 29, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 47 min |
| Aug 29, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 49 min |
| Aug 29, 6:12 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 33 min |
| Aug 29, 6:26 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 33 min |
| Aug 29, 6:48 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 42 min |
| Aug 31, 3:41 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 34 min |
| Aug 31, 4:01 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 44 min |
| Aug 31, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 38 min |
| Sep 22, 1:07 AM EDT | Severe Thunderstorm Warning | LWX | Carroll | 38 min |
| Sep 22, 1:37 AM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick | 38 min |
| Sep 22, 2:08 AM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard, Montgomery | 37 min |
| Oct 6, 11:17 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 28 min |
| Dec 31, 2:52 PM EST | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 23 min |
| Dec 31, 5:07 PM EST | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 23 min |
| Dec 31, 5:30 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Charles, Prince George's, Saint Mary's | 30 min |
| Dec 31, 6:00 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 45 min |
| Dec 31, 6:16 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 44 min |
| Dec 31, 6:32 PM EST | Severe Thunderstorm Warning | LWX | Saint Mary's | 43 min |
| Dec 31, 6:54 PM EST | Severe Thunderstorm Warning | AKQ | Dorchester | 36 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Prince George's County36
- Montgomery County30
- Baltimore County26
- Charles County25
- Washington County25
- Anne Arundel County24
- Harford County22
- Frederick County22
- Cecil County21
- Howard County19
- Saint Mary's County17
- Carroll County17
- Calvert County16
- Allegany County15
- Dorchester County13
- Queen Anne's County12
- Talbot County11
- Caroline County10
- Garrett County9
- Wicomico County9
- Kent County9
- City of Baltimore9
- Worcester County8
- Somerset County7
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.