Alert archive / Maryland / 2011
Weather alerts in Maryland, April 2011
280 weather alerts in April 2011, 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 April 2011. Tap one for its archive.
- Alerts
- 280
- Warnings
- 113
- Watches
- 28
- Advisories
- 18
- Busiest day
- April 28, 201166 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 2, 2:14 PM EDT | Special Weather Statement | LWX | Howard, Montgomery, City of Baltimore | 31 min |
| Apr 2, 2:56 PM EDT | Special Weather Statement | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 94 min |
| Apr 2, 3:10 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 50 min |
| Apr 2, 3:17 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 43 min |
| Apr 3, 4:09 PM EDT | Wind Advisory | PHI | Caroline | 26 hr |
| Apr 3, 6:43 PM EDT | Special Weather Statement | PBZ | Garrett | 47 min |
| Apr 3, 6:47 PM EDT | Special Weather Statement | PBZ | Garrett | 43 min |
| Apr 3, 7:52 PM EDT | Special Weather Statement | LWX | Allegany, Washington | 23 min |
| Apr 3, 8:18 PM EDT | Special Weather Statement | LWX | Allegany, Washington | 27 min |
| Apr 3, 8:52 PM EDT | Special Weather Statement | LWX | Washington | 23 min |
| Apr 3, 9:14 PM EDT | Special Weather Statement | LWX | Charles | 31 min |
| Apr 3, 9:19 PM EDT | Special Weather Statement | LWX | Frederick, Washington | 26 min |
| Apr 3, 9:46 PM EDT | Special Weather Statement | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 1 more | 44 min |
| Apr 3, 10:06 PM EDT | Special Weather Statement | LWX | Washington | 39 min |
| Apr 3, 10:29 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 61 min |
| Apr 3, 11:09 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 66 min |
| Apr 4, 8:34 AM EDT | Wind Advisory | LWX | Allegany | 22 hr |
| Apr 4, 9:35 AM EDT | Wind Advisory | PBZ | 16 hr | |
| Apr 4, 2:15 PM EDT | Red Flag Warning | PHI | Caroline | 4 hr |
| Apr 4, 3:24 PM EDT | Wind Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 22 hr |
| Apr 4, 6:00 PM EDT | Mesoscale Discussion | SPC | Garrett | 90 min |
| Apr 4, 8:00 PM EDT | Special Weather Statement | PBZ | Garrett | 60 min |
| Apr 5, 2:13 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Howard and 10 more | 32 min |
| Apr 5, 2:18 AM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 8 hr |
| Apr 5, 3:34 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 116 min |
| Apr 5, 3:56 AM EDT | Special Weather Statement | LWX | Carroll, Charles, Howard, Montgomery | 64 min |
| Apr 5, 4:29 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Montgomery, Prince George's | 51 min |
| Apr 5, 4:38 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 67 min |
| Apr 5, 4:40 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, Montgomery and 2 more | 53 min |
| Apr 5, 4:46 AM EDT | Tornado Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 29 min |
| Apr 5, 4:55 AM EDT | Tornado Warning | LWX | Anne Arundel, Prince George's | 24 min |
| Apr 5, 4:57 AM EDT | Tornado Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 33 min |
| Apr 5, 5:01 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 74 min |
| Apr 5, 5:05 AM EDT | Tornado Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 14 min |
| Apr 5, 5:07 AM EDT | Severe Thunderstorm Watch | SPC | Cecil | 2 hr |
| Apr 5, 5:22 AM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 23 min |
| Apr 5, 5:28 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 62 min |
| Apr 5, 5:43 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 62 min |
| Apr 5, 8:32 AM EDT | Special Weather Statement | LWX | Anne Arundel, Baltimore, Harford, Howard, Prince George's, City of Baltimore | 58 min |
| Apr 5, 8:55 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 65 min |
| Apr 5, 9:21 AM EDT | Special Weather Statement | LWX | Calvert, Charles, Saint Mary's | 54 min |
| Apr 5, 9:37 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's | 53 min |
| Apr 5, 9:57 AM EDT | Special Weather Statement | AKQ | Dorchester, Saint Mary's | 63 min |
| Apr 5, 10:20 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Apr 5, 10:40 AM EDT | Special Weather Statement | AKQ | Dorchester, Somerset, Wicomico | 65 min |
| Apr 5, 3:05 PM EDT | Frost Advisory | PHI | Caroline, Queen Anne's, Talbot | 13 hr |
| Apr 11, 12:24 PM EDT | Mesoscale Discussion | SPC | Garrett | 36 min |
| Apr 11, 12:47 PM EDT | Tornado Watch | SPC | Garrett | 6 hr |
| Apr 11, 3:44 PM EDT | Mesoscale Discussion | SPC | Garrett | 61 min |
| Apr 11, 6:43 PM EDT | Mesoscale Discussion | SPC | Carroll | 62 min |
| Apr 11, 7:12 PM EDT | Special Weather Statement | LWX | Washington | 33 min |
| Apr 11, 7:22 PM EDT | Special Weather Statement | LWX | Frederick | 23 min |
| Apr 12, 1:56 PM EDT | Mesoscale Discussion | SPC | Somerset, Worcester | 64 min |
| Apr 12, 2:24 PM EDT | Special Weather Statement | PHI | Talbot | 66 min |
| Apr 12, 2:45 PM EDT | Special Weather Statement | AKQ | Dorchester | 45 min |
| Apr 12, 3:13 PM EDT | Special Weather Statement | AKQ | Somerset | 62 min |
| Apr 12, 3:29 PM EDT | Special Weather Statement | AKQ | Dorchester, Wicomico | 46 min |
| Apr 12, 3:45 PM EDT | Special Weather Statement | PHI | Caroline | 45 min |
| Apr 15, 3:30 AM EDT | Wind Advisory | PBZ | 35 hr | |
| Apr 15, 4:34 AM EDT | Flash Flood Watch | LWX | Allegany, Baltimore, Carroll, Frederick, Washington, City of Baltimore | 41 hr |
| Apr 15, 10:52 AM EDT | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 26 hr |
| Apr 15, 11:54 AM EDT | Wind Advisory | LWX | Allegany, Frederick, Washington | 29 hr |
| Apr 15, 2:57 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 21 hr |
| Apr 15, 3:10 PM EDT | Wind Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 32 hr |
| Apr 15, 10:55 PM EDT | Coastal Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 16 hr |
| Apr 16, 3:25 AM EDT | Coastal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 31 hr |
| Apr 16, 3:25 AM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 22 hr |
| Apr 16, 4:32 AM EDT | Coastal Flood Warning | AKQ | Worcester | 10 hr |
| Apr 16, 4:32 AM EDT | High Surf Advisory | AKQ | Worcester | 19 hr |
| Apr 16, 7:05 AM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 23 hr |
| Apr 16, 9:32 AM EDT | High Wind Warning | PBZ | 4 hr | |
| Apr 16, 12:22 PM EDT | Coastal Flood Warning | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 23 hr |
| Apr 16, 12:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Frederick and 10 more | 113 min |
| Apr 16, 1:25 PM EDT | Special Weather Statement | PBZ | Garrett | 50 min |
| Apr 16, 1:29 PM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 8 hr |
| Apr 16, 2:23 PM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 8 hr |
| Apr 16, 2:58 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 47 min |
| Apr 16, 3:01 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico | 18 hr |
| Apr 16, 3:18 PM EDT | Special Weather Statement | LWX | Frederick, Washington | 57 min |
| Apr 16, 3:19 PM EDT | Special Weather Statement | LWX | Frederick, Washington | 56 min |
| Apr 16, 3:29 PM EDT | Areal Flood Warning | LWX | Washington | 7 hr |
| Apr 16, 4:01 PM EDT | Wind Advisory | PBZ | 27 hr | |
| Apr 16, 4:13 PM EDT | Special Weather Statement | LWX | Frederick, Montgomery | 92 min |
| Apr 16, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 41 min |
| Apr 16, 4:21 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 39 min |
| Apr 16, 4:29 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 13 more | 31 min |
| Apr 16, 4:41 PM EDT | Tornado Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Apr 16, 4:53 PM EDT | Areal Flood Warning | LWX | Frederick, Washington | 5 hr |
| Apr 16, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's | 46 min |
| Apr 16, 5:02 PM EDT | Special Weather Statement | LWX | Washington | 28 min |
| Apr 16, 5:09 PM EDT | Special Weather Statement | LWX | Montgomery | 66 min |
| Apr 16, 6:15 PM EDT | Special Weather Statement | LWX | Baltimore, Howard, Montgomery, Prince George's, City of Baltimore | 60 min |
| Apr 16, 6:18 PM EDT | River Flood Warning | LWX | Frederick | 59 hr |
| Apr 16, 6:22 PM EDT | Areal Flood Warning | PHI | Cecil | 12 hr |
| Apr 16, 6:35 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 40 min |
| Apr 16, 6:38 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 97 min |
| Apr 16, 7:01 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 44 min |
| Apr 16, 7:14 PM EDT | Tornado Warning | LWX | Frederick, Montgomery | 31 min |
| Apr 16, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Howard, Montgomery and 1 more | 52 min |
| Apr 16, 7:39 PM EDT | Special Weather Statement | LWX | Carroll | 66 min |
| Apr 16, 7:44 PM EDT | River Flood Warning | LWX | Washington | 26 hr |
| Apr 16, 7:46 PM EDT | Tornado Warning | LWX | Carroll, Frederick | 26 min |
| Apr 16, 7:49 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico | 26 min |
| Apr 16, 8:02 PM EDT | Tornado Warning | LWX | Baltimore, Carroll | 28 min |
| Apr 16, 8:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 11 more | 63 min |
| Apr 16, 8:18 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 42 min |
| Apr 16, 8:37 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 23 min |
| Apr 16, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 52 min |
| Apr 16, 8:52 PM EDT | Special Weather Statement | LWX | City of Baltimore | 23 min |
| Apr 16, 8:56 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 94 min |
| Apr 16, 9:11 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 64 min |
| Apr 16, 9:16 PM EDT | Special Weather Statement | LWX | Harford | 29 min |
| Apr 16, 9:20 PM EDT | Wind Advisory | LWX | Allegany, Frederick, Washington | 22 hr |
| Apr 16, 9:48 PM EDT | Areal Flood Warning | LWX | Frederick | 13 hr |
| Apr 16, 9:53 PM EDT | Special Weather Statement | LWX | Calvert | 37 min |
| Apr 16, 9:58 PM EDT | Mesoscale Discussion | SPC | Caroline, Queen Anne's | 62 min |
| Apr 16, 10:03 PM EDT | River Flood Warning | LWX | Washington | 37 hr |
| Apr 16, 10:14 PM EDT | River Flood Warning | LWX | Washington | 42 hr |
| Apr 16, 10:14 PM EDT | River Flood Warning | LWX | Montgomery | 58 hr |
| Apr 16, 10:17 PM EDT | River Flood Warning | LWX | Frederick | 36 hr |
| Apr 16, 10:42 PM EDT | Special Weather Statement | AKQ | Dorchester, Somerset, Wicomico | 63 min |
| Apr 16, 11:27 PM EDT | Areal Flood Warning | LWX | Washington | 17 hr |
| Apr 17, 4:02 AM EDT | Special Weather Statement | LWX | Carroll, Frederick, Washington | 58 min |
| Apr 17, 5:55 PM EDT | River Flood Warning | PHI | Cecil, Harford | 26 hr |
| Apr 18, 2:05 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, City of Baltimore | 8 hr |
| Apr 19, 9:45 AM EDT | Areal Flood Warning | LWX | Allegany | 6 hr |
| Apr 19, 9:54 AM EDT | Flood Watch | LWX | Allegany, Carroll, Frederick, Washington | 8 hr |
| Apr 19, 10:11 AM EDT | River Flood Warning | LWX | Allegany | 5 hr |
| Apr 19, 10:23 AM EDT | Flood Watch | PBZ | 5 hr | |
| Apr 19, 10:49 AM EDT | Areal Flood Warning | PBZ | Garrett | 9 hr |
| Apr 19, 12:17 PM EDT | Areal Flood Warning | LWX | Allegany | 12 hr |
| Apr 19, 3:21 PM EDT | Mesoscale Discussion | SPC | Garrett | 54 min |
| Apr 19, 3:29 PM EDT | Flash Flood Watch | PBZ | 3 hr | |
| Apr 19, 3:39 PM EDT | River Flood Warning | LWX | Garrett | 4 hr |
| Apr 19, 3:47 PM EDT | Special Weather Statement | LWX | Howard, City of Baltimore | 28 min |
| Apr 19, 4:32 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's, Talbot | 88 min |
| Apr 19, 4:58 PM EDT | Areal Flood Warning | LWX | Allegany | 7 hr |
| Apr 19, 5:18 PM EDT | Special Weather Statement | PBZ | Garrett | 57 min |
| Apr 19, 5:31 PM EDT | Special Weather Statement | LWX | Allegany | 59 min |
| Apr 20, 4:57 AM EDT | Special Weather Statement | PBZ | Garrett | 63 min |
| Apr 21, 2:05 PM EDT | Flood Watch | LWX | Allegany, Frederick, Washington | 44 hr |
| Apr 21, 2:55 PM EDT | Flash Flood Watch | PBZ | 53 hr | |
| Apr 22, 2:14 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 26 hr |
| Apr 23, 4:06 AM EDT | Flash Flood Watch | LWX | Allegany, Frederick, Washington | 18 hr |
| Apr 23, 7:23 PM EDT | Special Weather Statement | PBZ | Garrett | 52 min |
| Apr 23, 8:16 PM EDT | Mesoscale Discussion | SPC | Garrett | 59 min |
| Apr 23, 9:05 PM EDT | Special Weather Statement | LWX | Washington | 40 min |
| Apr 24, 2:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 93 min |
| Apr 24, 3:36 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 39 min |
| Apr 24, 3:40 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 5 hr |
| Apr 24, 4:03 PM EDT | Tornado Warning | LWX | Montgomery | 27 min |
| Apr 24, 4:07 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 38 min |
| Apr 24, 4:08 PM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 52 min |
| Apr 24, 4:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Howard, Montgomery, Prince George's and 1 more | 45 min |
| Apr 24, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 47 min |
| Apr 24, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 64 min |
| Apr 24, 6:10 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Charles and 9 more | 65 min |
| Apr 24, 6:27 PM EDT | Special Weather Statement | LWX | Prince George's | 33 min |
| Apr 24, 7:13 PM EDT | Special Weather Statement | LWX | Harford | 32 min |
| Apr 24, 7:19 PM EDT | Special Weather Statement | LWX | Howard | 26 min |
| Apr 24, 7:44 PM EDT | Special Weather Statement | LWX | City of Baltimore | 31 min |
| Apr 24, 7:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 32 min |
| Apr 24, 8:04 PM EDT | Special Weather Statement | LWX | Prince George's | 26 min |
| Apr 24, 8:06 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 39 min |
| Apr 24, 8:24 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 34 min |
| Apr 24, 8:40 PM EDT | Special Weather Statement | LWX | Anne Arundel | 35 min |
| Apr 24, 8:56 PM EDT | Special Weather Statement | LWX | Anne Arundel | 34 min |
| Apr 24, 9:02 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Howard, Montgomery and 5 more | 58 min |
| Apr 24, 9:19 PM EDT | Special Weather Statement | AKQ | Dorchester | 56 min |
| Apr 24, 10:00 PM EDT | Special Weather Statement | LWX | Prince George's | 60 min |
| Apr 24, 10:39 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
| Apr 26, 1:18 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 57 min |
| Apr 26, 1:49 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 56 min |
| Apr 26, 1:49 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 7 hr |
| Apr 26, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Washington | 7 hr |
| Apr 26, 4:34 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 56 min |
| Apr 26, 6:04 PM EDT | Special Weather Statement | LWX | Allegany | 41 min |
| Apr 26, 6:16 PM EDT | Special Weather Statement | PBZ | Garrett | 59 min |
| Apr 26, 6:32 PM EDT | Special Weather Statement | LWX | Allegany | 28 min |
| Apr 26, 7:44 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 61 min |
| Apr 26, 7:54 PM EDT | Special Weather Statement | PBZ | Garrett | 51 min |
| Apr 26, 8:38 PM EDT | Special Weather Statement | LWX | Allegany | 37 min |
| Apr 26, 8:50 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 22 min |
| Apr 26, 8:52 PM EDT | Tornado Warning | LWX | Allegany | 19 min |
| Apr 27, 9:51 AM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more | 29 hr |
| Apr 27, 10:09 AM EDT | Flash Flood Watch | PBZ | 18 hr | |
| Apr 27, 1:23 PM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 5 hr |
| Apr 27, 1:24 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 96 min |
| Apr 27, 2:56 PM EDT | Special Weather Statement | LWX | Saint Mary's | 34 min |
| Apr 27, 3:10 PM EDT | Tornado Watch | SPC | Garrett | 7 hr |
| Apr 27, 3:16 PM EDT | Special Weather Statement | LWX | Saint Mary's | 29 min |
| Apr 27, 3:28 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 62 min |
| Apr 27, 3:37 PM EDT | Special Weather Statement | LWX | Calvert | 23 min |
| Apr 27, 3:55 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Harford, Kent, Queen Anne's and 3 more | 65 min |
| Apr 27, 4:06 PM EDT | Special Weather Statement | PBZ | Garrett | 54 min |
| Apr 27, 4:39 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 10 more | 66 min |
| Apr 27, 4:43 PM EDT | Special Weather Statement | AKQ | Somerset, Wicomico | 62 min |
| Apr 27, 5:46 PM EDT | Tornado Warning | LWX | Charles | 29 min |
| Apr 27, 6:00 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 9 more | 60 min |
| Apr 27, 6:08 PM EDT | Tornado Warning | LWX | Charles | 37 min |
| Apr 27, 6:15 PM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 6 hr |
| Apr 27, 6:38 PM EDT | Tornado Warning | LWX | Charles, Prince George's | 37 min |
| Apr 27, 6:50 PM EDT | Mesoscale Discussion | SPC | Carroll, Harford, Washington | 55 min |
| Apr 27, 7:08 PM EDT | Tornado Warning | LWX | Anne Arundel, Prince George's | 37 min |
| Apr 27, 7:16 PM EDT | Special Weather Statement | LWX | Carroll | 29 min |
| Apr 27, 7:21 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Charles, Prince George's | 69 min |
| Apr 27, 7:24 PM EDT | Tornado Warning | LWX | Charles, Prince George's | 36 min |
| Apr 27, 7:27 PM EDT | Special Weather Statement | LWX | Howard | 33 min |
| Apr 27, 7:31 PM EDT | Tornado Warning | LWX | Baltimore, Carroll, Howard | 29 min |
| Apr 27, 7:34 PM EDT | Tornado Warning | LWX | Anne Arundel, Prince George's | 26 min |
| Apr 27, 7:55 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Harford and 8 more | 65 min |
| Apr 27, 8:15 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 8 hr |
| Apr 27, 8:19 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 36 min |
| Apr 27, 8:28 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 19 min |
| Apr 27, 8:56 PM EDT | Special Weather Statement | LWX | Frederick | 34 min |
| Apr 27, 10:39 PM EDT | Special Weather Statement | LWX | Allegany | 111 min |
| Apr 27, 11:31 PM EDT | Special Weather Statement | PBZ | Garrett | 59 min |
| Apr 27, 11:47 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 58 min |
| Apr 28, 12:27 AM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Howard, Montgomery, Washington | 63 min |
| Apr 28, 12:35 AM EDT | Flash Flood Warning | LWX | Allegany | 5 hr |
| Apr 28, 12:35 AM EDT | Severe Thunderstorm Warning | LWX | Allegany | 70 min |
| Apr 28, 12:41 AM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 7 hr |
| Apr 28, 1:15 AM EDT | Special Weather Statement | PBZ | Garrett | 60 min |
| Apr 28, 1:18 AM EDT | Tornado Warning | LWX | Allegany | 27 min |
| Apr 28, 1:29 AM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 35 min |
| Apr 28, 1:33 AM EDT | Flash Flood Warning | LWX | Allegany, Washington | 4 hr |
| Apr 28, 2:59 AM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 62 min |
| Apr 28, 3:04 AM EDT | Flash Flood Warning | LWX | Washington | 7 hr |
| Apr 28, 4:05 AM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Apr 28, 4:24 AM EDT | Tornado Warning | LWX | Carroll, Frederick, Washington | 51 min |
| Apr 28, 5:09 AM EDT | Special Weather Statement | LWX | Frederick | 51 min |
| Apr 28, 5:35 AM EDT | Tornado Warning | LWX | Frederick | 26 min |
| Apr 28, 5:43 AM EDT | Tornado Warning | LWX | Frederick | 18 min |
| Apr 28, 6:06 AM EDT | Special Weather Statement | LWX | Harford | 39 min |
| Apr 28, 6:12 AM EDT | Special Weather Statement | PHI | Cecil, Kent | 63 min |
| Apr 28, 6:37 AM EDT | Tornado Warning | LWX | Frederick, Montgomery | 38 min |
| Apr 28, 7:05 AM EDT | Tornado Warning | LWX | Carroll, Frederick, Howard, Montgomery | 25 min |
| Apr 28, 7:17 AM EDT | Tornado Warning | LWX | Carroll, Frederick | 28 min |
| Apr 28, 7:27 AM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Howard, Montgomery | 5 hr |
| Apr 28, 7:38 AM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Dorchester and 10 more | 7 hr |
| Apr 28, 7:55 AM EDT | Tornado Warning | LWX | Baltimore, Carroll, Frederick | 27 min |
| Apr 28, 8:01 AM EDT | Flash Flood Warning | LWX | Frederick, Washington | 119 min |
| Apr 28, 8:12 AM EDT | Tornado Warning | LWX | Carroll, Frederick | 33 min |
| Apr 28, 8:14 AM EDT | Tornado Warning | LWX | Baltimore, Harford | 11 min |
| Apr 28, 8:45 AM EDT | Tornado Warning | LWX | Baltimore, Carroll | 30 min |
| Apr 28, 9:14 AM EDT | Tornado Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 31 min |
| Apr 28, 9:39 AM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 36 min |
| Apr 28, 9:45 AM EDT | Flash Flood Warning | LWX | Montgomery | 101 min |
| Apr 28, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Apr 28, 9:49 AM EDT | Tornado Warning | LWX | Baltimore, Harford | 26 min |
| Apr 28, 9:55 AM EDT | River Flood Warning | PHI | Cecil, Harford | 66 hr |
| Apr 28, 9:58 AM EDT | Areal Flood Warning | LWX | Frederick, Washington | 3 hr |
| Apr 28, 10:10 AM EDT | Special Weather Statement | LWX | Carroll, Howard | 50 min |
| Apr 28, 10:36 AM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Harford | 102 min |
| Apr 28, 10:38 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 52 min |
| Apr 28, 10:44 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 61 min |
| Apr 28, 10:54 AM EDT | Special Weather Statement | LWX | Calvert, Charles, Prince George's, Saint Mary's | 51 min |
| Apr 28, 10:54 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 66 min |
| Apr 28, 10:56 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 49 min |
| Apr 28, 11:09 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 36 min |
| Apr 28, 11:22 AM EDT | Tornado Warning | LWX | Anne Arundel | 14 min |
| Apr 28, 11:26 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 18 min |
| Apr 28, 11:32 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 58 min |
| Apr 28, 11:37 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's | 53 min |
| Apr 28, 11:38 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 7 hr |
| Apr 28, 11:46 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 26 min |
| Apr 28, 11:49 AM EDT | Mesoscale Discussion | SPC | Cecil, Kent, Queen Anne's | 56 min |
| Apr 28, 12:15 PM EDT | Areal Flood Warning | LWX | Baltimore, Carroll, Frederick, Harford, Montgomery | 3 hr |
| Apr 28, 12:28 PM EDT | River Flood Warning | LWX | Washington | 11 hr |
| Apr 28, 12:42 PM EDT | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's | 63 min |
| Apr 28, 2:00 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more | 60 min |
| Apr 28, 2:41 PM EDT | Tornado Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 6 hr |
| Apr 28, 4:40 PM EDT | Special Weather Statement | LWX | Saint Mary's | 50 min |
| Apr 28, 5:04 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 56 min |
| Apr 28, 5:09 PM EDT | Special Weather Statement | AKQ | Dorchester | 66 min |
| Apr 28, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 39 min |
| Apr 28, 6:33 PM EDT | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 57 min |
| Apr 28, 8:27 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Wicomico, Worcester | 33 min |
| Apr 28, 9:05 PM EDT | Special Weather Statement | AKQ | Somerset, Wicomico, Worcester | 55 min |
| Apr 28, 9:43 PM EDT | River Flood Warning | LWX | Washington | 10 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 | 44 |
| Tornado Warning | 31 |
| Severe Thunderstorm Watch | 7 |
| Tornado Watch | 10 |
| Mesoscale Discussion | 33 |
| Special Weather Statement | 88 |
| Flooding | |
| Areal Flood Warning | 11 |
| Flash Flood Warning | 9 |
| River Flood Warning | 12 |
| Flash Flood Watch | 6 |
| Flood Watch | 3 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 9 |
| Fire | |
| Red Flag Warning | 1 |
| Coast and beach | |
| Coastal Flood Warning | 4 |
| Coastal Flood Watch | 2 |
| Coastal Flood Advisory | 7 |
| High Surf Advisory | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Frederick County61
- Prince George's County55
- Washington County55
- Montgomery County48
- Anne Arundel County48
- Charles County47
- Carroll County46
- Baltimore County45
- Caroline County44
- Queen Anne's County43
- Howard County42
- Calvert County41
- Saint Mary's County41
- City of Baltimore40
- Talbot County40
- Allegany County40
- Kent County36
- Harford County33
- Cecil County32
- Garrett County28
- Dorchester County27
- Somerset County22
- Wicomico County21
- Worcester County16
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.