Alert archive / Maryland / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Maryland, 2019
462 severe thunderstorm warnings in 2019. 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 2019. Tap one for its archive.
- Severe Thunderstorm Warnings
- 462
- Busiest month
- June109 severe thunderstorm warnings
- Busiest day
- June 29, 201927 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.
323 of 462 severe thunderstorm warnings covering Maryland in 2019 had a qualifying storm report inside them; 723 of 860 hail, wind and damage reports fell inside a warning, on average 21 minutes after it went out.
Maryland, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 462 | 323 | 30% | 860 | 84% | 21 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: severe thunderstorm warnings | 694 | 468 | 33% | 1,610 | 81% | 19 min |
| NWS Pittsburgh, PA: severe thunderstorm warnings | 311 | 231 | 26% | 611 | 82% | 19 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 410 | 276 | 33% | 1,175 | 87% | 25 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 327 | 237 | 28% | 509 | 86% | 20 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 |
|---|---|---|---|---|
| Mar 15, 8:49 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Prince George's | 27 min |
| Mar 22, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 49 min |
| Mar 22, 3:52 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Montgomery, Prince George's | 38 min |
| Mar 22, 4:21 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 39 min |
| Apr 8, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 74 min |
| Apr 8, 6:16 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 44 min |
| Apr 8, 7:22 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico | 38 min |
| Apr 8, 7:50 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico, Worcester | 40 min |
| Apr 12, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 31 min |
| Apr 12, 7:00 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 30 min |
| Apr 14, 6:19 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 41 min |
| Apr 14, 6:24 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 36 min |
| Apr 14, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 50 min |
| Apr 14, 9:55 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 65 min |
| Apr 14, 10:56 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 49 min |
| Apr 15, 1:18 AM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 42 min |
| Apr 15, 1:36 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Prince George's, City of Baltimore | 39 min |
| Apr 15, 1:47 AM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 43 min |
| Apr 15, 2:01 AM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 59 min |
| Apr 15, 2:05 AM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 14 min |
| Apr 15, 2:13 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 23 min |
| Apr 15, 2:15 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Howard, Montgomery, City of Baltimore | 39 min |
| Apr 15, 2:15 AM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 45 min |
| Apr 15, 2:18 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 34 min |
| Apr 15, 2:25 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 50 min |
| Apr 15, 2:38 AM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 52 min |
| Apr 15, 2:46 AM EDT | Severe Thunderstorm Warning | PHI | Cecil | 44 min |
| Apr 15, 2:52 AM EDT | Severe Thunderstorm Warning | LWX | Harford | 23 min |
| Apr 15, 3:07 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 38 min |
| Apr 15, 4:00 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 46 min |
| Apr 19, 8:34 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 28 min |
| Apr 19, 8:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 34 min |
| Apr 19, 9:06 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 39 min |
| Apr 19, 9:30 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 45 min |
| Apr 19, 9:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 37 min |
| Apr 26, 2:20 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Apr 26, 2:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 50 min |
| Apr 26, 2:37 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard, City of Baltimore | 38 min |
| Apr 26, 2:56 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 49 min |
| Apr 26, 3:00 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 45 min |
| Apr 26, 3:08 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 67 min |
| Apr 26, 3:23 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 67 min |
| Apr 26, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 39 min |
| Apr 26, 3:32 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 58 min |
| Apr 26, 3:37 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 26 min |
| Apr 26, 4:12 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 63 min |
| Apr 26, 4:28 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 47 min |
| Apr 26, 4:56 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 64 min |
| Apr 26, 5:07 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 38 min |
| Apr 26, 5:15 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 30 min |
| May 2, 3:03 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 42 min |
| May 2, 3:30 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 45 min |
| May 2, 3:38 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 52 min |
| May 2, 3:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Prince George's | 51 min |
| May 2, 4:39 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 36 min |
| May 2, 4:48 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 42 min |
| May 2, 6:35 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 40 min |
| May 3, 8:07 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 38 min |
| May 3, 8:28 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 47 min |
| May 3, 8:43 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 47 min |
| May 18, 5:08 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 52 min |
| May 18, 5:40 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 35 min |
| May 18, 6:33 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 42 min |
| May 18, 8:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard, Montgomery | 39 min |
| May 19, 2:23 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 34 min |
| May 19, 2:35 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 40 min |
| May 19, 3:02 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 24 min |
| May 19, 4:00 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 45 min |
| May 19, 5:58 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 32 min |
| May 23, 1:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 37 min |
| May 23, 2:12 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 18 min |
| May 23, 2:26 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 34 min |
| May 23, 2:42 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 33 min |
| May 23, 2:56 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Howard, Montgomery | 34 min |
| May 23, 3:11 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 34 min |
| May 23, 3:21 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore | 39 min |
| May 23, 3:36 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Montgomery, Prince George's | 39 min |
| May 23, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 52 min |
| May 23, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 65 min |
| May 23, 3:58 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Prince George's, City of Baltimore | 32 min |
| May 23, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 50 min |
| May 23, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 63 min |
| May 23, 4:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 15 min |
| May 23, 4:34 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 56 min |
| May 23, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 48 min |
| May 23, 5:27 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 18 min |
| May 23, 10:36 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 24 min |
| May 25, 8:50 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 25 min |
| May 25, 11:03 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 42 min |
| May 26, 4:56 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 34 min |
| May 26, 6:35 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 12 min |
| May 26, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 15 min |
| May 26, 7:40 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 50 min |
| May 26, 8:07 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 38 min |
| May 26, 8:11 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 36 min |
| May 26, 8:21 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 39 min |
| May 26, 8:27 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 16 min |
| May 26, 8:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 29 min |
| May 26, 8:59 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, City of Baltimore | 31 min |
| May 26, 9:35 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 40 min |
| May 26, 9:45 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 45 min |
| May 26, 10:01 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 59 min |
| May 28, 7:50 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 40 min |
| May 28, 8:28 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 47 min |
| May 28, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 46 min |
| May 28, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 64 min |
| May 29, 3:44 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 31 min |
| May 29, 4:46 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, City of Baltimore | 44 min |
| May 29, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Howard, City of Baltimore | 31 min |
| May 29, 5:38 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 52 min |
| May 29, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 28 min |
| May 29, 5:51 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 24 min |
| May 29, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 34 min |
| May 29, 6:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 12 min |
| May 29, 6:18 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 42 min |
| May 29, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 53 min |
| May 30, 1:45 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 29 min |
| May 30, 2:20 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 40 min |
| May 30, 2:53 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 52 min |
| May 30, 3:10 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 50 min |
| May 30, 3:33 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 42 min |
| May 30, 3:42 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 48 min |
| May 30, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 52 min |
| May 30, 4:03 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 27 min |
| May 30, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 41 min |
| May 30, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 43 min |
| May 30, 4:33 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 42 min |
| May 30, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 51 min |
| May 30, 5:13 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 24 min |
| Jun 2, 1:49 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Jun 2, 2:16 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 44 min |
| Jun 2, 2:30 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 21 min |
| Jun 2, 2:34 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 26 min |
| Jun 2, 3:01 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 25 min |
| Jun 2, 3:17 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 43 min |
| Jun 2, 3:45 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 26 min |
| Jun 2, 4:40 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 50 min |
| Jun 2, 5:18 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 44 min |
| Jun 2, 5:19 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 41 min |
| Jun 2, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 39 min |
| Jun 2, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 26 min |
| Jun 2, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 23 min |
| Jun 2, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 33 min |
| Jun 2, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 44 min |
| Jun 2, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 44 min |
| Jun 2, 5:52 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 23 min |
| Jun 2, 5:57 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 48 min |
| Jun 2, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, Prince George's | 33 min |
| Jun 2, 6:24 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 30 min |
| Jun 2, 6:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 14 min |
| Jun 2, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 36 min |
| Jun 2, 6:53 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 52 min |
| Jun 2, 7:10 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 50 min |
| Jun 2, 7:36 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 39 min |
| Jun 2, 7:48 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 42 min |
| Jun 2, 8:38 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's, Saint Mary's | 37 min |
| Jun 2, 9:17 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 58 min |
| Jun 2, 11:44 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 46 min |
| Jun 5, 4:02 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 43 min |
| Jun 5, 5:48 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 57 min |
| Jun 13, 3:49 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Jun 13, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 43 min |
| Jun 13, 4:40 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 50 min |
| Jun 13, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 46 min |
| Jun 13, 5:04 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 41 min |
| Jun 13, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 47 min |
| Jun 13, 5:22 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 38 min |
| Jun 13, 5:34 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 26 min |
| Jun 13, 5:44 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 46 min |
| Jun 13, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 41 min |
| Jun 13, 6:14 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, City of Baltimore | 46 min |
| Jun 13, 6:21 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 39 min |
| Jun 13, 7:30 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 15 min |
| Jun 13, 7:49 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 41 min |
| Jun 17, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 50 min |
| Jun 17, 4:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Montgomery, Prince George's | 42 min |
| Jun 17, 4:32 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 43 min |
| Jun 17, 4:38 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 37 min |
| Jun 17, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 26 min |
| Jun 17, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 32 min |
| Jun 17, 5:40 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 34 min |
| Jun 17, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 47 min |
| Jun 17, 7:07 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 53 min |
| Jun 17, 7:13 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 15 min |
| Jun 17, 9:03 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 42 min |
| Jun 18, 8:17 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 43 min |
| Jun 18, 8:39 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 51 min |
| Jun 20, 2:33 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 57 min |
| Jun 27, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 52 min |
| Jun 27, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 53 min |
| Jun 27, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 48 min |
| Jun 27, 6:15 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 45 min |
| Jun 28, 3:36 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 24 min |
| Jun 28, 5:07 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 53 min |
| Jun 28, 5:40 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 33 min |
| Jun 28, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 44 min |
| Jun 28, 6:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 29 min |
| Jun 28, 6:25 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 25 min |
| Jun 28, 6:34 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 41 min |
| Jun 29, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 49 min |
| Jun 29, 2:20 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 55 min |
| Jun 29, 2:37 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 53 min |
| Jun 29, 2:46 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 59 min |
| Jun 29, 2:47 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 28 min |
| Jun 29, 3:27 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 33 min |
| Jun 29, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 53 min |
| Jun 29, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 27 min |
| Jun 29, 3:33 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 27 min |
| Jun 29, 3:48 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 42 min |
| Jun 29, 3:59 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 46 min |
| Jun 29, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 33 min |
| Jun 29, 4:08 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 31 min |
| Jun 29, 4:11 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 49 min |
| Jun 29, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 28 min |
| Jun 29, 4:14 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 46 min |
| Jun 29, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 26 min |
| Jun 29, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Howard, Montgomery | 36 min |
| Jun 29, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 41 min |
| Jun 29, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Montgomery, Prince George's | 38 min |
| Jun 29, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 52 min |
| Jun 29, 4:55 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 50 min |
| Jun 29, 4:58 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 47 min |
| Jun 29, 5:05 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 39 min |
| Jun 29, 5:11 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 19 min |
| Jun 29, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 79 min |
| Jun 29, 7:59 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Prince George's | 46 min |
| Jun 29, 8:19 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 56 min |
| Jun 29, 8:33 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's | 13 min |
| Jun 29, 8:44 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 14 min |
| Jun 29, 9:05 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 40 min |
| Jun 29, 9:18 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 57 min |
| Jun 29, 9:57 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 48 min |
| Jun 29, 10:14 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 34 min |
| Jun 29, 10:18 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 42 min |
| Jun 29, 10:23 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 52 min |
| Jun 29, 10:25 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 21 min |
| Jun 29, 10:47 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 25 min |
| Jun 29, 11:40 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 25 min |
| Jul 2, 4:38 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 37 min |
| Jul 2, 5:04 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 41 min |
| Jul 2, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 50 min |
| Jul 2, 6:18 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 42 min |
| Jul 2, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 25 min |
| Jul 2, 6:39 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 36 min |
| Jul 2, 6:59 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard | 46 min |
| Jul 2, 7:09 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 36 min |
| Jul 2, 7:15 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 45 min |
| Jul 2, 7:27 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 48 min |
| Jul 2, 7:45 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 45 min |
| Jul 2, 7:53 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 37 min |
| Jul 2, 8:20 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 25 min |
| Jul 4, 1:40 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Prince George's | 50 min |
| Jul 4, 2:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 39 min |
| Jul 4, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 52 min |
| Jul 4, 2:56 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 49 min |
| Jul 4, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 27 min |
| Jul 4, 3:20 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 40 min |
| Jul 4, 4:29 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 33 min |
| Jul 6, 6:06 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 39 min |
| Jul 6, 6:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 35 min |
| Jul 6, 6:45 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 60 min |
| Jul 6, 6:58 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 36 min |
| Jul 6, 7:15 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Howard, Montgomery | 45 min |
| Jul 6, 7:35 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Montgomery, Prince George's | 55 min |
| Jul 6, 8:25 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 50 min |
| Jul 6, 9:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 43 min |
| Jul 8, 11:18 AM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 42 min |
| Jul 11, 2:11 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 49 min |
| Jul 11, 3:57 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 48 min |
| Jul 11, 3:59 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Montgomery, Prince George's | 46 min |
| Jul 11, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 52 min |
| Jul 11, 4:47 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 43 min |
| Jul 11, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 46 min |
| Jul 11, 5:44 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 61 min |
| Jul 11, 6:34 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 56 min |
| Jul 11, 7:30 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 45 min |
| Jul 11, 7:33 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 42 min |
| Jul 11, 8:26 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 37 min |
| Jul 17, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 47 min |
| Jul 17, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 52 min |
| Jul 17, 5:08 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 41 min |
| Jul 17, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 48 min |
| Jul 17, 5:23 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 52 min |
| Jul 17, 5:35 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 40 min |
| Jul 17, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford, City of Baltimore | 59 min |
| Jul 17, 6:08 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 52 min |
| Jul 17, 6:31 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 44 min |
| Jul 17, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 40 min |
| Jul 17, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's | 46 min |
| Jul 17, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
| Jul 17, 7:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 43 min |
| Jul 17, 8:19 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 41 min |
| Jul 17, 8:46 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico, Worcester | 44 min |
| Jul 20, 9:18 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 30 min |
| Jul 21, 7:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 45 min |
| Jul 21, 7:05 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Jul 21, 7:29 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 46 min |
| Jul 21, 7:32 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 43 min |
| Jul 21, 7:35 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 26 min |
| Jul 21, 7:59 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 61 min |
| Jul 21, 8:26 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford, Howard, City of Baltimore | 49 min |
| Jul 21, 8:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 44 min |
| Jul 21, 9:14 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 46 min |
| Jul 21, 9:30 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
| Jul 21, 9:44 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 46 min |
| Jul 21, 10:13 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 47 min |
| Jul 22, 12:51 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 54 min |
| Jul 22, 2:01 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 59 min |
| Jul 22, 2:24 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 51 min |
| Jul 22, 2:39 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 51 min |
| Jul 22, 2:44 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 46 min |
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 48 min |
| Jul 22, 3:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 56 min |
| Jul 22, 3:23 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford, City of Baltimore | 67 min |
| Jul 22, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 58 min |
| Jul 22, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 32 min |
| Jul 22, 4:16 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 59 min |
| Jul 22, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 61 min |
| Jul 22, 7:43 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 47 min |
| Jul 22, 8:15 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 30 min |
| Jul 22, 8:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 24 min |
| Jul 22, 9:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 29 min |
| Jul 22, 11:16 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Worcester | 44 min |
| Jul 22, 11:40 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 50 min |
| Jul 22, 11:55 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 50 min |
| Jul 22, 11:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 47 min |
| Jul 30, 2:16 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 44 min |
| Jul 30, 2:40 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 50 min |
| Jul 30, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 43 min |
| Jul 31, 1:39 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 36 min |
| Jul 31, 2:15 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 30 min |
| Jul 31, 4:45 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 45 min |
| Jul 31, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert | 39 min |
| Jul 31, 5:58 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 46 min |
| Jul 31, 6:14 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Worcester | 61 min |
| Jul 31, 6:16 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert | 44 min |
| Aug 1, 1:38 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 37 min |
| Aug 1, 2:09 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 51 min |
| Aug 1, 2:29 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 46 min |
| Aug 1, 2:51 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 24 min |
| Aug 1, 3:14 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 46 min |
| Aug 1, 4:00 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 45 min |
| Aug 1, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
| Aug 1, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 54 min |
| Aug 1, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 21 min |
| Aug 1, 4:47 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 23 min |
| Aug 1, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 50 min |
| Aug 1, 5:44 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 46 min |
| Aug 1, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 44 min |
| Aug 1, 6:40 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 36 min |
| Aug 4, 3:16 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 44 min |
| Aug 5, 1:57 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 26 min |
| Aug 5, 5:40 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Howard, City of Baltimore | 34 min |
| Aug 6, 5:26 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 49 min |
| Aug 6, 6:08 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 52 min |
| Aug 6, 6:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 39 min |
| Aug 6, 6:36 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 39 min |
| Aug 6, 6:52 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 23 min |
| Aug 6, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 49 min |
| Aug 6, 7:22 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 53 min |
| Aug 6, 7:42 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 33 min |
| Aug 6, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Montgomery, Prince George's | 48 min |
| Aug 6, 8:16 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 22 min |
| Aug 7, 1:12 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 48 min |
| Aug 7, 1:42 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 48 min |
| Aug 7, 1:53 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 52 min |
| Aug 7, 1:57 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 48 min |
| Aug 7, 2:01 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Howard, Montgomery | 44 min |
| Aug 7, 2:18 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 42 min |
| Aug 7, 2:37 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 24 min |
| Aug 7, 2:41 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 38 min |
| Aug 7, 2:45 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 45 min |
| Aug 7, 3:14 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 46 min |
| Aug 7, 3:44 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 46 min |
| Aug 7, 3:52 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 38 min |
| Aug 7, 4:07 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 53 min |
| Aug 7, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 50 min |
| Aug 7, 4:12 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 48 min |
| Aug 7, 4:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 45 min |
| Aug 7, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 41 min |
| Aug 7, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 63 min |
| Aug 7, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 42 min |
| Aug 7, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 52 min |
| Aug 7, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 51 min |
| Aug 9, 4:41 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 34 min |
| Aug 9, 5:11 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 49 min |
| Aug 15, 6:36 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 39 min |
| Aug 17, 2:08 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 52 min |
| Aug 17, 3:14 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, City of Baltimore | 46 min |
| Aug 17, 3:46 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 44 min |
| Aug 17, 4:01 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 32 min |
| Aug 17, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 47 min |
| Aug 18, 2:12 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 48 min |
| Aug 18, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
| Aug 18, 3:02 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard | 27 min |
| Aug 18, 8:23 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 52 min |
| Aug 18, 9:12 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Howard, Montgomery | 35 min |
| Aug 18, 10:22 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 53 min |
| Aug 18, 10:40 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 25 min |
| Aug 19, 2:18 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 28 min |
| Aug 19, 4:46 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 46 min |
| Aug 19, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 51 min |
| Aug 19, 10:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Aug 19, 10:47 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 43 min |
| Aug 19, 11:06 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 15 min |
| Aug 20, 2:12 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 48 min |
| Aug 20, 3:11 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 34 min |
| Aug 20, 3:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 43 min |
| Aug 20, 4:00 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 21 min |
| Aug 20, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 41 min |
| Aug 20, 4:45 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 45 min |
| Aug 20, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 41 min |
| Aug 20, 4:56 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 23 min |
| Aug 20, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 34 min |
| Aug 20, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 44 min |
| Aug 20, 5:28 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 30 min |
| Aug 20, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 44 min |
| Aug 20, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard | 17 min |
| Aug 20, 6:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 39 min |
| Aug 21, 6:13 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 47 min |
| Aug 21, 6:45 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 21 min |
| Aug 22, 5:52 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 38 min |
| Aug 22, 6:25 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 50 min |
| Aug 22, 6:38 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 52 min |
| Aug 22, 6:49 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 41 min |
| Aug 22, 7:11 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 49 min |
| Aug 22, 7:27 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick | 48 min |
| Aug 22, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 63 min |
| Aug 22, 8:23 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 52 min |
| Aug 22, 8:54 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 66 min |
| Aug 22, 9:10 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 32 min |
| Aug 22, 9:21 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 54 min |
| Aug 22, 10:11 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 64 min |
| Aug 23, 4:26 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 38 min |
| Sep 2, 5:10 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 50 min |
| Sep 2, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 39 min |
| Sep 2, 6:26 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 49 min |
| Sep 2, 6:32 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 25 min |
| Sep 2, 7:05 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 40 min |
| Sep 4, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 51 min |
| Sep 4, 8:13 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 62 min |
| Sep 11, 3:30 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 45 min |
| Sep 11, 4:57 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Montgomery, Prince George's | 48 min |
| Sep 11, 5:22 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 53 min |
| Oct 31, 4:56 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 49 min |
| Oct 31, 6:46 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 44 min |
| Oct 31, 7:24 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 51 min |
| Oct 31, 8:32 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard, Montgomery | 28 min |
| Oct 31, 9:08 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 37 min |
| Oct 31, 9:20 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 25 min |
| Oct 31, 9:35 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 55 min |
| Oct 31, 10:07 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 38 min |
| Oct 31, 10:14 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 46 min |
| Oct 31, 10:23 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 67 min |
| Oct 31, 10:41 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Prince George's | 49 min |
| Oct 31, 10:47 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 73 min |
| Oct 31, 10:56 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 34 min |
| Oct 31, 11:10 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 50 min |
| Oct 31, 11:22 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 38 min |
| Oct 31, 11:23 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 22 min |
| Nov 1, 12:17 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 43 min |
| Nov 1, 12:54 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 36 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Prince George's County90
- Montgomery County90
- Baltimore County75
- Anne Arundel County73
- Frederick County67
- Howard County54
- Charles County52
- Carroll County47
- Washington County43
- Harford County42
- Caroline County41
- Calvert County40
- Cecil County39
- City of Baltimore37
- Kent County37
- Queen Anne's County33
- Saint Mary's County32
- Talbot County29
- Wicomico County28
- Dorchester County25
- Worcester County21
- Somerset County20
- Allegany County18
- Garrett County6
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe 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.