Weather alerts in Maryland, 2003
428 weather alerts in 2003, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2003. Tap one for its archive.
- Alerts
- 428
- Warnings
- 283
- Watches
- 34
- Advisories
- 0
- Busiest month
- August105 alerts
- Busiest day
- August 27, 200327 alerts
Over time
By month
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 |
|---|---|---|---|---|
| Jan 3, 9:55 AM EST | Mesoscale Discussion | SPC | Carroll | 4 hr |
| Jan 16, 9:53 PM EST | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 6 hr |
| Jan 30, 2:18 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 6 more | 4 hr |
| Feb 15, 11:58 AM EST | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Somerset and 2 more | 7 hr |
| Feb 16, 12:12 AM EST | Mesoscale Discussion | SPC | Allegany, Calvert, Charles, Garrett, Saint Mary's | 5 hr |
| Feb 16, 11:45 AM EST | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 6 hr |
| Feb 16, 7:04 PM EST | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 12 more | 4 hr |
| Feb 16, 7:31 PM EST | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Talbot | 6 hr |
| Feb 16, 11:19 PM EST | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more | 6 hr |
| Feb 26, 6:06 PM EST | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 4 hr |
| Feb 27, 3:19 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 8 more | 6 hr |
| Mar 6, 5:18 AM EST | Mesoscale Discussion | SPC | Garrett | 4 hr |
| Mar 13, 1:55 PM EST | Mesoscale Discussion | SPC | Charles, Frederick, Howard, Montgomery, Washington | 2 hr |
| Mar 13, 2:20 PM EST | Severe Thunderstorm Watch | SPC | Allegany, Baltimore, Carroll, Frederick, Harford, Howard and 3 more | 6 hr |
| Mar 13, 6:04 PM EST | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Talbot | 86 min |
| Mar 13, 6:33 PM EST | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Talbot | 87 min |
| Mar 21, 12:18 PM EST | Mesoscale Discussion | SPC | Allegany, Garrett | 117 min |
| Mar 21, 2:05 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more | 2 hr |
| Mar 29, 12:01 PM EST | Mesoscale Discussion | SPC | Baltimore, Carroll, Charles, Frederick, Howard, Montgomery and 3 more | 89 min |
| Mar 29, 4:33 PM EST | Mesoscale Discussion | SPC | Charles | 117 min |
| Mar 29, 5:52 PM EST | Tornado Warning | LWX | Charles | 53 min |
| Mar 29, 6:42 PM EST | Tornado Warning | LWX | Charles | 33 min |
| Mar 29, 6:57 PM EST | Severe Thunderstorm Warning | LWX | Calvert, Prince George's | 63 min |
| Mar 30, 10:10 AM EST | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 3 hr |
| May 1, 6:02 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Howard and 2 more | 3 hr |
| May 7, 12:49 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 5 more | 116 min |
| May 7, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 7 more | 6 hr |
| May 7, 3:21 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 6 more | 114 min |
| May 7, 6:07 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 53 min |
| May 7, 6:21 PM EDT | Tornado Warning | LWX | Charles | 54 min |
| May 7, 6:45 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 60 min |
| May 7, 7:15 PM EDT | Tornado Warning | LWX | Charles, Saint Mary's | 60 min |
| May 7, 7:52 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 38 min |
| May 7, 8:02 PM EDT | Tornado Warning | LWX | Calvert | 28 min |
| May 7, 8:13 PM EDT | Tornado Warning | LWX | Saint Mary's | 47 min |
| May 7, 8:45 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 30 min |
| May 8, 11:55 AM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 50 min |
| May 8, 12:36 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 54 min |
| May 8, 12:41 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 49 min |
| May 8, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 16 more | 5 hr |
| May 8, 2:48 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 16 more | 117 min |
| May 8, 4:46 PM EDT | Mesoscale Discussion | SPC | Allegany, Charles, Garrett, Saint Mary's | 59 min |
| May 10, 4:33 AM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 87 min |
| May 10, 7:32 AM EDT | Flash Flood Warning | PBZ | Garrett | 4 hr |
| May 11, 11:45 AM EDT | Tornado Watch | SPC | Garrett | 5 hr |
| May 11, 2:52 PM EDT | Mesoscale Discussion | SPC | Garrett | 113 min |
| May 11, 3:18 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 14 more | 117 min |
| May 24, 11:45 PM EDT | Flash Flood Warning | LWX | Frederick | 4 hr |
| May 25, 12:10 AM EDT | Flash Flood Warning | LWX | Carroll | 4 hr |
| May 28, 9:10 AM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| May 31, 1:06 PM EDT | Mesoscale Discussion | SPC | Carroll, Frederick, Howard, Montgomery, Washington | 114 min |
| May 31, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 5 hr |
| May 31, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 34 min |
| May 31, 3:58 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 2 hr |
| May 31, 4:26 PM EDT | Flash Flood Warning | LWX | Frederick | 2 hr |
| May 31, 4:58 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 17 min |
| May 31, 5:11 PM EDT | Flash Flood Warning | LWX | Carroll | 109 min |
| May 31, 5:24 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 51 min |
| May 31, 6:15 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 45 min |
| May 31, 7:34 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 41 min |
| May 31, 7:46 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert | 74 min |
| Jun 3, 8:57 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Washington | 4 hr |
| Jun 7, 8:14 AM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 3 hr |
| Jun 7, 10:52 AM EDT | Flash Flood Warning | LWX | Carroll, Frederick | 4 hr |
| Jun 7, 11:10 AM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 4 hr |
| Jun 7, 2:43 PM EDT | Flash Flood Warning | LWX | Frederick, Montgomery | 2 hr |
| Jun 7, 4:34 PM EDT | Flash Flood Warning | LWX | Harford | 4 hr |
| Jun 11, 3:05 PM EDT | Mesoscale Discussion | SPC | Montgomery | 25 min |
| Jun 11, 3:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Frederick, Garrett, Washington | 6 hr |
| Jun 11, 7:07 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 53 min |
| Jun 11, 8:16 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 59 min |
| Jun 11, 9:02 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 58 min |
| Jun 11, 9:12 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 63 min |
| Jun 11, 9:32 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 43 min |
| Jun 11, 9:50 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 25 min |
| Jun 11, 10:03 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 42 min |
| Jun 11, 10:26 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 49 min |
| Jun 12, 12:02 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 4 more | 58 min |
| Jun 12, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 11 more | 7 hr |
| Jun 12, 4:06 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 11 more | 114 min |
| Jun 12, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 66 min |
| Jun 12, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 48 min |
| Jun 12, 5:19 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Jun 12, 5:23 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 67 min |
| Jun 12, 5:27 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 63 min |
| Jun 12, 5:55 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, City of Baltimore | 2 hr |
| Jun 12, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 53 min |
| Jun 12, 6:33 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 57 min |
| Jun 12, 7:29 PM EDT | Flash Flood Warning | LWX | Montgomery | 2 hr |
| Jun 12, 7:41 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 64 min |
| Jun 12, 7:55 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford, City of Baltimore | 2 hr |
| Jun 12, 8:03 PM EDT | Flash Flood Warning | LWX | Carroll | 117 min |
| Jun 13, 12:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more | 83 min |
| Jun 13, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Jun 13, 5:38 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Howard, Montgomery and 4 more | 97 min |
| Jun 13, 5:54 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Jun 13, 6:08 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Washington | 3 hr |
| Jun 13, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 45 min |
| Jun 13, 6:34 PM EDT | Flash Flood Warning | LWX | Howard | 3 hr |
| Jun 13, 7:13 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 47 min |
| Jun 13, 7:17 PM EDT | Flash Flood Warning | LWX | Montgomery | 118 min |
| Jun 13, 7:35 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 55 min |
| Jun 13, 7:51 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 3 hr |
| Jun 13, 8:20 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 55 min |
| Jun 13, 8:23 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 52 min |
| Jun 13, 8:57 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Jun 14, 12:01 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 12 more | 119 min |
| Jun 14, 12:11 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Jun 14, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 6 hr |
| Jun 14, 2:55 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 65 min |
| Jun 14, 3:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 60 min |
| Jun 14, 3:55 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 50 min |
| Jun 14, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 62 min |
| Jun 14, 4:15 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 45 min |
| Jun 14, 4:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 2 hr |
| Jun 14, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 34 min |
| Jun 19, 12:58 AM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Jun 19, 6:40 PM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Jun 19, 7:45 PM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 3 hr |
| Jun 19, 9:30 PM EDT | Flash Flood Warning | LWX | Prince George's | 2 hr |
| Jun 20, 11:28 AM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Jun 20, 12:38 PM EDT | Flash Flood Warning | LWX | Howard | 3 hr |
| Jun 20, 2:22 PM EDT | Flash Flood Warning | LWX | Montgomery | 6 hr |
| Jun 20, 3:05 PM EDT | Flash Flood Warning | LWX | Harford | 4 hr |
| Jun 20, 6:53 PM EDT | Flash Flood Warning | LWX | Harford | 4 hr |
| Jun 21, 4:10 PM EDT | Flash Flood Warning | LWX | Baltimore | 4 hr |
| Jun 21, 4:45 PM EDT | Flash Flood Warning | LWX | Harford | 4 hr |
| Jun 21, 5:07 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 38 min |
| Jun 21, 5:27 PM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| Jun 21, 6:48 PM EDT | Flash Flood Warning | PHI | Queen Anne's | 2 hr |
| Jun 21, 7:18 PM EDT | Flash Flood Warning | LWX | City of Baltimore | 3 hr |
| Jun 27, 1:45 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico and 1 more | 2 hr |
| Jun 27, 2:48 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 57 min |
| Jun 27, 3:10 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 65 min |
| Jun 27, 3:28 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert | 62 min |
| Jun 27, 3:55 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 65 min |
| Jun 27, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's | 64 min |
| Jun 27, 4:47 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 43 min |
| Jun 30, 1:43 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Talbot and 2 more | 92 min |
| Jun 30, 10:59 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 61 min |
| Jul 1, 1:04 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 56 min |
| Jul 3, 6:46 PM EDT | Flash Flood Warning | AKQ | Dorchester | 4 hr |
| Jul 4, 3:38 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 37 min |
| Jul 4, 5:01 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 59 min |
| Jul 5, 4:20 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more | 2 hr |
| Jul 6, 12:28 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 9 more | 2 hr |
| Jul 6, 2:42 AM EDT | Flash Flood Warning | PBZ | Garrett | 2 hr |
| Jul 6, 1:04 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 12 more | 2 hr |
| Jul 6, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 37 min |
| Jul 6, 5:46 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's | 59 min |
| Jul 6, 7:23 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Harford and 6 more | 67 min |
| Jul 6, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 63 min |
| Jul 6, 8:18 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 57 min |
| Jul 6, 8:45 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 45 min |
| Jul 6, 8:56 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Howard | 94 min |
| Jul 6, 8:58 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 62 min |
| Jul 6, 9:35 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 70 min |
| Jul 6, 9:41 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, City of Baltimore | 64 min |
| Jul 6, 10:04 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 56 min |
| Jul 6, 10:11 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 64 min |
| Jul 6, 10:15 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 60 min |
| Jul 6, 10:24 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's | 51 min |
| Jul 6, 10:50 PM EDT | Flash Flood Warning | PHI | Queen Anne's | 55 min |
| Jul 6, 10:50 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Jul 7, 2:23 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 67 min |
| Jul 7, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 8 more | 5 hr |
| Jul 7, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 53 min |
| Jul 7, 6:03 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 57 min |
| Jul 7, 6:29 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 61 min |
| Jul 7, 8:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Frederick, Washington | 5 hr |
| Jul 7, 10:32 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Washington | 58 min |
| Jul 8, 7:29 AM EDT | Mesoscale Discussion | SPC | Garrett | 61 min |
| Jul 8, 8:12 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Howard, Montgomery and 1 more | 93 min |
| Jul 8, 8:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Frederick, Garrett, Washington | 4 hr |
| Jul 8, 9:34 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 56 min |
| Jul 8, 9:42 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 78 min |
| Jul 8, 11:16 PM EDT | Mesoscale Discussion | SPC | Allegany | 119 min |
| Jul 9, 10:28 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 92 min |
| Jul 9, 11:50 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 7 more | 6 hr |
| Jul 9, 12:09 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Charles, Dorchester, Kent, Queen Anne's and 5 more | 96 min |
| Jul 9, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 8 more | 8 hr |
| Jul 9, 2:06 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Jul 9, 2:47 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 4 more | 88 min |
| Jul 9, 3:48 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more | 117 min |
| Jul 9, 4:36 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 69 min |
| Jul 9, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 67 min |
| Jul 9, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 65 min |
| Jul 9, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 74 min |
| Jul 9, 7:36 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 8 more | 114 min |
| Jul 10, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett | 6 hr |
| Jul 10, 6:50 PM EDT | Severe Thunderstorm Watch | SPC | Montgomery | 6 hr |
| Jul 10, 6:57 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 93 min |
| Jul 10, 7:12 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Jul 10, 8:02 PM EDT | Tornado Warning | LWX | Charles | 58 min |
| Jul 10, 9:47 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 58 min |
| Jul 10, 10:37 PM EDT | Mesoscale Discussion | SPC | Montgomery | 83 min |
| Jul 12, 10:53 AM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Jul 12, 4:15 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 75 min |
| Jul 12, 5:05 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett | 6 hr |
| Jul 12, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 60 min |
| Jul 12, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 56 min |
| Jul 12, 6:33 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 57 min |
| Jul 12, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 65 min |
| Jul 12, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 51 min |
| Jul 12, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 63 min |
| Jul 14, 4:42 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 3 hr |
| Jul 14, 9:11 AM EDT | Tornado Warning | AKQ | Somerset | 29 min |
| Jul 14, 3:49 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 56 min |
| Jul 14, 6:17 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Montgomery, Washington | 2 hr |
| Jul 14, 6:33 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 57 min |
| Jul 14, 6:44 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 61 min |
| Jul 14, 7:37 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 53 min |
| Jul 18, 1:14 PM EDT | Mesoscale Discussion | SPC | Charles | 2 hr |
| Jul 18, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 46 min |
| Jul 18, 4:47 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 43 min |
| Jul 18, 4:49 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 116 min |
| Jul 18, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 60 min |
| Jul 18, 5:31 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 44 min |
| Jul 18, 5:55 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 30 min |
| Jul 21, 3:00 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 45 min |
| Jul 21, 7:28 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 32 min |
| Jul 22, 1:19 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 11 more | 86 min |
| Jul 22, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Calvert, Caroline, Dorchester, Kent, Queen Anne's, Saint Mary's and 4 more | 5 hr |
| Jul 22, 3:45 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 45 min |
| Jul 22, 4:28 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 32 min |
| Jul 22, 4:39 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 31 min |
| Jul 22, 4:49 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 56 min |
| Jul 22, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 46 min |
| Jul 22, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more | 5 hr |
| Jul 22, 7:15 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 45 min |
| Jul 22, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 67 min |
| Jul 22, 7:44 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 46 min |
| Jul 22, 7:45 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 12 more | 90 min |
| Jul 22, 10:19 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Jul 23, 1:05 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Charles, Frederick and 6 more | 115 min |
| Jul 28, 1:30 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Jul 28, 5:41 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico and 1 more | 2 hr |
| Aug 3, 3:19 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 56 min |
| Aug 3, 4:09 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 51 min |
| Aug 5, 8:29 PM EDT | Tornado Warning | LWX | Charles | 46 min |
| Aug 5, 8:32 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Charles, Prince George's | 88 min |
| Aug 5, 9:15 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 45 min |
| Aug 5, 10:12 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 48 min |
| Aug 5, 10:55 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 65 min |
| Aug 8, 5:38 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Aug 9, 2:12 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Aug 9, 8:30 PM EDT | Flash Flood Warning | PHI | Cecil, Kent | 2 hr |
| Aug 11, 12:15 AM EDT | Flash Flood Warning | LWX | Harford | 4 hr |
| Aug 11, 1:20 AM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Aug 11, 12:45 PM EDT | Flash Flood Warning | LWX | Baltimore, Howard | 3 hr |
| Aug 12, 1:50 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Aug 12, 2:25 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 65 min |
| Aug 12, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 60 min |
| Aug 12, 5:50 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Aug 16, 2:21 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 54 min |
| Aug 16, 2:24 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 66 min |
| Aug 16, 3:30 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 45 min |
| Aug 16, 3:43 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 62 min |
| Aug 16, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 64 min |
| Aug 16, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 60 min |
| Aug 16, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 57 min |
| Aug 16, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 64 min |
| Aug 16, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 60 min |
| Aug 16, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 61 min |
| Aug 16, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 76 min |
| Aug 16, 5:45 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 30 min |
| Aug 16, 6:26 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 49 min |
| Aug 16, 7:26 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 29 min |
| Aug 16, 10:25 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 65 min |
| Aug 16, 10:56 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 64 min |
| Aug 17, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | Calvert, Charles, Saint Mary's | 6 hr |
| Aug 22, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's | 7 hr |
| Aug 22, 3:27 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 1 more | 3 hr |
| Aug 22, 4:33 PM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| Aug 22, 5:42 PM EDT | Mesoscale Discussion | SPC | Charles, Montgomery, Prince George's, Saint Mary's | 2 hr |
| Aug 22, 5:45 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 60 min |
| Aug 22, 7:19 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 41 min |
| Aug 22, 7:22 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Kent, Queen Anne's | 53 min |
| Aug 22, 8:04 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 26 min |
| Aug 22, 8:22 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 68 min |
| Aug 22, 9:37 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 38 min |
| Aug 26, 11:08 AM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 2 hr |
| Aug 26, 11:10 AM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 50 min |
| Aug 26, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Garrett, Washington | 5 hr |
| Aug 26, 2:19 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Calvert, Charles, Frederick, Garrett and 5 more | 116 min |
| Aug 26, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 5 hr |
| Aug 26, 3:07 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 53 min |
| Aug 26, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 79 min |
| Aug 26, 3:58 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 32 min |
| Aug 26, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 73 min |
| Aug 26, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 70 min |
| Aug 26, 4:38 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 97 min |
| Aug 26, 4:45 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Charles, Dorchester, Prince George's, Queen Anne's and 5 more | 90 min |
| Aug 26, 4:47 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 73 min |
| Aug 26, 4:54 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 51 min |
| Aug 26, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 52 min |
| Aug 26, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 61 min |
| Aug 26, 5:24 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 41 min |
| Aug 26, 5:30 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 45 min |
| Aug 26, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 62 min |
| Aug 26, 5:48 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Charles, Dorchester, Prince George's, Queen Anne's and 5 more | 57 min |
| Aug 26, 5:59 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico | 41 min |
| Aug 26, 6:12 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 93 min |
| Aug 26, 6:15 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 60 min |
| Aug 26, 6:21 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 39 min |
| Aug 26, 6:31 PM EDT | Tornado Warning | LWX | Charles | 29 min |
| Aug 26, 7:00 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 45 min |
| Aug 26, 9:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett | 6 hr |
| Aug 26, 10:18 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 57 min |
| Aug 26, 10:35 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 40 min |
| Aug 26, 11:11 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 49 min |
| Aug 27, 12:22 AM EDT | Mesoscale Discussion | SPC | Charles | 53 min |
| Aug 27, 6:11 AM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 2 hr |
| Aug 27, 7:05 AM EDT | Flash Flood Warning | PBZ | Garrett | 4 hr |
| Aug 27, 9:23 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more | 2 hr |
| Aug 27, 9:40 AM EDT | Severe Thunderstorm Watch | SPC | Harford | 5 hr |
| Aug 27, 10:17 AM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 58 min |
| Aug 27, 10:35 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 5 hr |
| Aug 27, 11:05 AM EDT | Severe Thunderstorm Warning | LWX | Allegany | 40 min |
| Aug 27, 2:10 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 65 min |
| Aug 27, 3:09 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Frederick and 7 more | 66 min |
| Aug 27, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 9 more | 7 hr |
| Aug 27, 3:59 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Aug 27, 4:03 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 42 min |
| Aug 27, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 55 min |
| Aug 27, 5:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 10 more | 87 min |
| Aug 27, 6:31 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 29 min |
| Aug 27, 6:51 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Aug 27, 6:56 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 64 min |
| Aug 27, 7:01 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 44 min |
| Aug 27, 7:09 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 51 min |
| Aug 27, 7:30 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 45 min |
| Aug 27, 7:30 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset and 3 more | 4 hr |
| Aug 27, 7:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 37 min |
| Aug 27, 9:19 PM EDT | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 56 min |
| Aug 29, 2:59 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 14 more | 3 hr |
| Aug 29, 3:50 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Frederick and 8 more | 5 hr |
| Aug 29, 7:29 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 4 more | 61 min |
| Aug 30, 11:20 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 3 hr |
| Aug 30, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 10 more | 5 hr |
| Aug 30, 3:11 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 10 more | 2 hr |
| Aug 30, 6:29 PM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 61 min |
| Sep 1, 5:38 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Sep 1, 7:17 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 4 more | 88 min |
| Sep 2, 4:07 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 53 min |
| Sep 2, 4:53 PM EDT | Tornado Warning | LWX | Charles | 37 min |
| Sep 2, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 60 min |
| Sep 2, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 28 min |
| Sep 2, 5:48 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 42 min |
| Sep 2, 6:04 PM EDT | Tornado Warning | AKQ | Dorchester | 51 min |
| Sep 2, 6:20 PM EDT | Tornado Warning | AKQ | Worcester | 30 min |
| Sep 3, 1:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Montgomery and 5 more | 3 hr |
| Sep 3, 7:27 PM EDT | Mesoscale Discussion | SPC | Frederick, Howard, Montgomery, Washington | 93 min |
| Sep 3, 8:24 PM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| Sep 3, 9:33 PM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Sep 3, 11:23 PM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| Sep 4, 2:21 PM EDT | Mesoscale Discussion | SPC | Somerset | 114 min |
| Sep 15, 8:35 AM EDT | Flash Flood Warning | PHI | Cecil | 4 hr |
| Sep 15, 11:17 AM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Sep 15, 2:08 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Sep 15, 5:19 PM EDT | Flash Flood Warning | PHI | Cecil | 6 hr |
| Sep 18, 4:04 AM EDT | Mesoscale Discussion | SPC | Dorchester, Somerset, Wicomico, Worcester | 3 hr |
| Sep 18, 7:44 AM EDT | Mesoscale Discussion | SPC | Calvert, Dorchester, Saint Mary's, Somerset, Talbot, Wicomico and 1 more | 2 hr |
| Sep 18, 8:25 AM EDT | Tornado Watch | SPC | Saint Mary's, Somerset, Worcester | 12 hr |
| Sep 18, 12:03 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Worcester | 117 min |
| Sep 18, 4:03 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Wicomico, Worcester | 117 min |
| Sep 18, 6:29 PM EDT | Tornado Warning | AKQ | Worcester | 16 min |
| Sep 18, 6:30 PM EDT | Tornado Warning | AKQ | Worcester | 15 min |
| Sep 18, 6:44 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset | 91 min |
| Sep 18, 11:27 PM EDT | Flash Flood Warning | PBZ | Garrett | 6 hr |
| Sep 23, 1:49 AM EDT | Flash Flood Warning | LWX | Frederick, Washington | 3 hr |
| Sep 23, 2:25 AM EDT | Flash Flood Warning | LWX | Carroll | 3 hr |
| Sep 23, 2:43 AM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Sep 23, 4:25 AM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Sep 23, 5:15 AM EDT | Flash Flood Warning | LWX | Carroll | 3 hr |
| Sep 23, 5:43 AM EDT | Flash Flood Warning | LWX | Montgomery | 2 hr |
| Sep 23, 6:36 AM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 24 min |
| Sep 23, 8:53 AM EDT | Severe Thunderstorm Warning | AKQ | Wicomico, Worcester | 47 min |
| Sep 23, 8:55 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 30 min |
| Sep 26, 3:10 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Montgomery, Washington | 3 hr |
| Sep 27, 2:22 PM EDT | Mesoscale Discussion | SPC | Frederick, Washington | 113 min |
| Sep 27, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett, Washington | 5 hr |
| Sep 27, 5:20 PM EDT | Flash Flood Warning | LWX | Allegany | 4 hr |
| Sep 27, 6:52 PM EDT | Mesoscale Discussion | SPC | Allegany, Washington | 53 min |
| Oct 14, 10:45 AM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 7 more | 90 min |
| Oct 14, 10:08 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 37 min |
| Oct 14, 10:37 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 38 min |
| Oct 14, 10:46 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 44 min |
| Oct 14, 11:04 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 41 min |
| Oct 27, 12:54 PM EST | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico and 1 more | 96 min |
| Oct 27, 2:43 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 62 min |
| Oct 27, 2:44 PM EST | Severe Thunderstorm Warning | AKQ | Dorchester | 31 min |
| Nov 5, 3:09 PM EST | Severe Thunderstorm Warning | LWX | Montgomery | 66 min |
| Nov 5, 3:21 PM EST | Tornado Warning | LWX | Montgomery | 39 min |
| Nov 5, 3:35 PM EST | Severe Thunderstorm Warning | LWX | Howard | 40 min |
| Nov 5, 4:00 PM EST | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 45 min |
| Nov 5, 4:25 PM EST | Flash Flood Warning | LWX | Montgomery | 2 hr |
| Nov 5, 7:57 PM EST | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 63 min |
| Nov 5, 11:21 PM EST | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 29 min |
| Nov 12, 5:15 AM EST | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Nov 19, 8:22 AM EST | Flash Flood Warning | PBZ | Garrett | 5 hr |
| Nov 19, 8:50 AM EST | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 10 more | 6 hr |
| Nov 19, 10:57 AM EST | Mesoscale Discussion | SPC | Dorchester, Somerset, Wicomico | 93 min |
| Nov 19, 11:06 AM EST | Severe Thunderstorm Warning | LWX | Allegany | 39 min |
| Nov 19, 11:25 AM EST | Tornado Watch | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 6 hr |
| Nov 19, 11:26 AM EST | Severe Thunderstorm Warning | LWX | Washington | 79 min |
| Nov 19, 12:16 PM EST | Severe Thunderstorm Warning | LWX | Frederick | 59 min |
| Nov 19, 12:29 PM EST | Flash Flood Warning | LWX | Allegany | 3 hr |
| Nov 19, 12:45 PM EST | Tornado Watch | SPC | Anne Arundel, Baltimore, Caroline, Cecil, Harford, Kent and 3 more | 5 hr |
| Nov 19, 12:47 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 5 more | 118 min |
| Nov 19, 12:52 PM EST | Severe Thunderstorm Warning | LWX | Carroll | 53 min |
| Nov 19, 1:00 PM EST | Severe Thunderstorm Warning | LWX | Montgomery | 60 min |
| Nov 19, 1:12 PM EST | Severe Thunderstorm Warning | LWX | Howard | 63 min |
| Nov 19, 1:29 PM EST | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 61 min |
| Nov 19, 2:22 PM EST | Severe Thunderstorm Warning | LWX | Charles | 53 min |
| Nov 19, 2:24 PM EST | Severe Thunderstorm Warning | LWX | Harford | 66 min |
| Nov 19, 2:27 PM EST | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Worcester | 93 min |
| Nov 19, 2:32 PM EST | Severe Thunderstorm Warning | PHI | Cecil, Kent | 58 min |
| Nov 19, 2:56 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Cecil, Harford, Kent and 3 more | 2 hr |
| Nov 19, 3:23 PM EST | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 3 more | 4 hr |
| Nov 19, 3:34 PM EST | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 56 min |
| Nov 19, 3:59 PM EST | Mesoscale Discussion | SPC | Somerset, Worcester | 61 min |
| Nov 28, 2:28 PM EST | Severe Thunderstorm Warning | LWX | Washington | 47 min |
| Nov 28, 3:34 PM EST | Severe Thunderstorm Warning | LWX | Frederick | 41 min |
| Nov 28, 3:43 PM EST | Severe Thunderstorm Warning | LWX | Montgomery | 62 min |
| Nov 28, 6:24 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 51 min |
| Dec 5, 12:20 PM EST | Mesoscale Discussion | SPC | Allegany, Washington | 6 hr |
| Dec 14, 6:39 AM EST | Mesoscale Discussion | SPC | Allegany, Garrett | 6 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 | 190 |
| Tornado Warning | 16 |
| Severe Thunderstorm Watch | 29 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 111 |
| Flooding | |
| Flash Flood Warning | 77 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Montgomery County103
- Charles County90
- Frederick County90
- Prince George's County82
- Washington County76
- Calvert County75
- Howard County75
- Carroll County74
- Saint Mary's County74
- Garrett County73
- Baltimore County71
- Anne Arundel County70
- Harford County68
- Queen Anne's County66
- City of Baltimore66
- Talbot County65
- Allegany County65
- Kent County63
- Dorchester County58
- Caroline County55
- Cecil County54
- Somerset County51
- Wicomico County46
- Worcester County40
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20022004
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. Rebuilt daily.