Alert archive / Maryland / 2011
Weather alerts in Maryland, September 2011
243 weather alerts in September 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 September 2011. Tap one for its archive.
- Alerts
- 243
- Warnings
- 85
- Watches
- 22
- Advisories
- 35
- Busiest day
- September 8, 201146 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 |
|---|---|---|---|---|
| Sep 1, 11:27 AM EDT | Special Weather Statement | PBZ | Garrett | 63 min |
| Sep 2, 1:10 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, City of Baltimore | 12 hr |
| Sep 3, 8:43 AM EDT | Special Weather Statement | LWX | Carroll | 32 min |
| Sep 3, 9:21 AM EDT | Special Weather Statement | LWX | Carroll, Frederick, Howard, Montgomery | 24 min |
| Sep 3, 9:44 AM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 46 min |
| Sep 3, 10:29 AM EDT | Special Weather Statement | LWX | Montgomery | 31 min |
| Sep 3, 10:45 AM EDT | Special Weather Statement | LWX | City of Baltimore | 30 min |
| Sep 3, 1:49 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 14 hr |
| Sep 4, 1:42 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 14 hr |
| Sep 4, 2:35 PM EDT | Special Weather Statement | PBZ | Garrett | 25 min |
| Sep 4, 3:05 PM EDT | Flood Watch | PHI | Cecil | 4 days |
| Sep 4, 3:15 PM EDT | Mesoscale Discussion | SPC | Garrett | 60 min |
| Sep 4, 11:54 PM EDT | Special Weather Statement | LWX | Carroll, Frederick | 66 min |
| Sep 5, 4:06 AM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more | 5 days |
| Sep 5, 5:10 AM EDT | Rip Current Statement | AKQ | Worcester | 5 days |
| Sep 5, 1:41 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 16 hr |
| Sep 5, 3:05 PM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 25 min |
| Sep 5, 3:36 PM EDT | Special Weather Statement | LWX | Prince George's | 24 min |
| Sep 5, 3:49 PM EDT | Flash Flood Watch | PBZ | 36 hr | |
| Sep 5, 6:03 PM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's | 117 min |
| Sep 5, 9:58 PM EDT | Special Weather Statement | LWX | Baltimore, Harford, Howard, Montgomery, City of Baltimore | 62 min |
| Sep 5, 10:04 PM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 4 hr |
| Sep 5, 10:17 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Howard, City of Baltimore | 2 hr |
| Sep 6, 12:22 AM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Sep 6, 12:39 AM EDT | Special Weather Statement | LWX | Calvert | 36 min |
| Sep 6, 1:19 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 56 min |
| Sep 6, 2:03 AM EDT | Special Weather Statement | LWX | Anne Arundel, Prince George's | 87 min |
| Sep 6, 12:10 PM EDT | River Flood Watch | LWX | Garrett | 9 hr |
| Sep 6, 12:10 PM EDT | River Flood Watch | LWX | Allegany | 19 hr |
| Sep 6, 12:10 PM EDT | River Flood Watch | LWX | Allegany | 22 hr |
| Sep 6, 12:26 PM EDT | River Flood Watch | LWX | Frederick | 29 hr |
| Sep 6, 12:26 PM EDT | River Flood Watch | LWX | Montgomery | 29 hr |
| Sep 6, 12:26 PM EDT | River Flood Watch | LWX | Allegany | 5 hr |
| Sep 6, 12:26 PM EDT | River Flood Watch | LWX | Washington | 22 hr |
| Sep 6, 12:26 PM EDT | River Flood Watch | LWX | Washington | 19 hr |
| Sep 6, 12:26 PM EDT | River Flood Watch | LWX | Washington | 29 hr |
| Sep 6, 12:29 PM EDT | River Flood Watch | LWX | Washington | 5 hr |
| Sep 6, 1:38 PM EDT | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 39 hr |
| Sep 6, 4:50 PM EDT | Special Weather Statement | AKQ | Dorchester | 55 min |
| Sep 6, 5:13 PM EDT | River Flood Warning | LWX | Allegany | 17 hr |
| Sep 6, 5:13 PM EDT | River Flood Warning | LWX | Washington | 24 hr |
| Sep 6, 5:24 PM EDT | Areal Flood Warning | LWX | Allegany | 12 hr |
| Sep 6, 5:24 PM EDT | River Flood Watch | LWX | Frederick | 24 hr |
| Sep 6, 5:24 PM EDT | River Flood Watch | LWX | Washington | 24 hr |
| Sep 6, 5:26 PM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 3 hr |
| Sep 6, 5:35 PM EDT | Areal Flood Warning | PBZ | Garrett | 12 hr |
| Sep 6, 5:43 PM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Sep 6, 5:44 PM EDT | Special Weather Statement | PHI | Caroline | 2 hr |
| Sep 6, 5:47 PM EDT | Special Weather Statement | AKQ | Somerset, Wicomico | 58 min |
| Sep 6, 7:31 PM EDT | Flash Flood Warning | LWX | Calvert, Saint Mary's | 3 hr |
| Sep 6, 9:07 PM EDT | River Flood Warning | LWX | Garrett | 7 hr |
| Sep 6, 10:17 PM EDT | River Flood Warning | LWX | Montgomery | 19 hr |
| Sep 6, 10:21 PM EDT | Flash Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 3 hr |
| Sep 7, 1:19 AM EDT | Special Weather Statement | LWX | Baltimore, Carroll | 56 min |
| Sep 7, 9:51 AM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 12 hr |
| Sep 7, 10:47 AM EDT | Flash Flood Warning | LWX | Charles, Prince George's | 7 hr |
| Sep 7, 10:57 AM EDT | Special Weather Statement | LWX | Prince George's | 33 min |
| Sep 7, 11:28 AM EDT | Special Weather Statement | LWX | Charles, Prince George's | 32 min |
| Sep 7, 11:33 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Howard, Prince George's | 10 hr |
| Sep 7, 11:38 AM EDT | Flash Flood Warning | LWX | Charles | 3 hr |
| Sep 7, 11:46 AM EDT | Special Weather Statement | LWX | Howard | 44 min |
| Sep 7, 11:48 AM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 18 hr |
| Sep 7, 12:14 PM EDT | Special Weather Statement | LWX | Charles | 31 min |
| Sep 7, 12:18 PM EDT | Flash Flood Warning | LWX | Charles, Prince George's, Saint Mary's | 5 hr |
| Sep 7, 12:37 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 70 hr |
| Sep 7, 12:39 PM EDT | Special Weather Statement | LWX | Prince George's | 51 min |
| Sep 7, 1:03 PM EDT | Special Weather Statement | LWX | Montgomery | 27 min |
| Sep 7, 1:14 PM EDT | Flash Flood Warning | LWX | Carroll, Howard, Montgomery | 3 hr |
| Sep 7, 1:28 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Prince George's, Saint Mary's | 3 hr |
| Sep 7, 1:32 PM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 28 min |
| Sep 7, 1:34 PM EDT | Special Weather Statement | PHI | Cecil | 56 min |
| Sep 7, 1:58 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 8 hr |
| Sep 7, 4:03 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 12 hr |
| Sep 7, 4:19 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Calvert, Saint Mary's | 6 hr |
| Sep 7, 4:40 PM EDT | River Flood Warning | PHI | Cecil, Harford | 4 days |
| Sep 7, 5:03 PM EDT | Special Weather Statement | LWX | Calvert | 22 min |
| Sep 7, 5:25 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Charles, Howard, Prince George's and 1 more | 6 hr |
| Sep 7, 6:12 PM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 48 min |
| Sep 7, 6:34 PM EDT | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's | 56 min |
| Sep 7, 6:55 PM EDT | Special Weather Statement | LWX | Saint Mary's | 35 min |
| Sep 7, 7:23 PM EDT | Tornado Warning | LWX | Saint Mary's | 37 min |
| Sep 7, 7:50 PM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 25 min |
| Sep 7, 7:52 PM EDT | Special Weather Statement | PHI | Harford | 53 min |
| Sep 7, 8:34 PM EDT | Special Weather Statement | LWX | Calvert | 26 min |
| Sep 7, 9:09 PM EDT | Flash Flood Warning | LWX | Charles, Montgomery, Prince George's | 3 hr |
| Sep 7, 9:22 PM EDT | Tornado Warning | LWX | Charles, Saint Mary's | 23 min |
| Sep 7, 9:46 PM EDT | Tornado Warning | LWX | Charles, Prince George's, Saint Mary's | 29 min |
| Sep 7, 10:03 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, Montgomery and 2 more | 6 hr |
| Sep 7, 10:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 114 min |
| Sep 7, 10:25 PM EDT | Special Weather Statement | LWX | Prince George's | 45 min |
| Sep 7, 10:26 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's | 6 hr |
| Sep 7, 11:26 PM EDT | Special Weather Statement | LWX | Anne Arundel, City of Baltimore | 49 min |
| Sep 7, 11:28 PM EDT | Special Weather Statement | LWX | Calvert | 47 min |
| Sep 7, 11:37 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick | 3 hr |
| Sep 7, 11:47 PM EDT | Tornado Warning | LWX | Anne Arundel, Calvert | 28 min |
| Sep 8, 12:13 AM EDT | Tornado Warning | LWX | Anne Arundel | 16 min |
| Sep 8, 12:45 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 4 hr |
| Sep 8, 1:17 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Saint Mary's | 104 min |
| Sep 8, 2:27 AM EDT | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 3 hr |
| Sep 8, 3:55 AM EDT | Areal Flood Warning | LWX | Charles, Montgomery, Prince George's | 14 hr |
| Sep 8, 4:02 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, Montgomery and 2 more | 20 hr |
| Sep 8, 4:35 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 40 hr |
| Sep 8, 5:54 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Charles, Harford, Howard, Prince George's and 1 more | 3 hr |
| Sep 8, 7:26 AM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 3 hr |
| Sep 8, 7:40 AM EDT | Special Weather Statement | AKQ | Dorchester | 65 min |
| Sep 8, 8:47 AM EDT | River Flood Watch | LWX | Frederick | 5 hr |
| Sep 8, 9:23 AM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Sep 8, 9:41 AM EDT | River Flood Warning | LWX | Montgomery | 32 hr |
| Sep 8, 10:28 AM EDT | Flash Flood Warning | LWX | Frederick, Montgomery | 9 hr |
| Sep 8, 12:23 PM EDT | Flash Flood Warning | LWX | Charles | 11 hr |
| Sep 8, 12:52 PM EDT | Special Weather Statement | AKQ | Dorchester | 38 min |
| Sep 8, 1:00 PM EDT | Flash Flood Warning | LWX | Montgomery | 6 hr |
| Sep 8, 1:51 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 6 hr |
| Sep 8, 1:55 PM EDT | River Flood Warning | LWX | Frederick | 22 hr |
| Sep 8, 2:31 PM EDT | Flash Flood Warning | LWX | Montgomery | 5 hr |
| Sep 8, 3:23 PM EDT | Special Weather Statement | LWX | Frederick | 97 min |
| Sep 8, 3:53 PM EDT | Flash Flood Warning | PHI | Caroline | 4 hr |
| Sep 8, 4:02 PM EDT | Coastal Flood Statement | AKQ | Worcester | 5 hr |
| Sep 8, 4:27 PM EDT | Special Weather Statement | PHI | Caroline | 63 min |
| Sep 8, 4:41 PM EDT | Areal Flood Advisory | AKQ | Dorchester, Wicomico | 79 min |
| Sep 8, 4:41 PM EDT | Flash Flood Warning | LWX | Charles, Prince George's, Saint Mary's | 4 hr |
| Sep 8, 5:15 PM EDT | Tornado Warning | LWX | Charles, Saint Mary's | 30 min |
| Sep 8, 5:27 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Sep 8, 6:00 PM EDT | Areal Flood Advisory | AKQ | Dorchester, Wicomico | 2 hr |
| Sep 8, 6:21 PM EDT | Mesoscale Discussion | SPC | Charles, Montgomery | 114 min |
| Sep 8, 6:25 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Howard | 74 min |
| Sep 8, 7:01 PM EDT | Flash Flood Warning | LWX | Frederick, Montgomery | 4 hr |
| Sep 8, 7:30 PM EDT | Special Weather Statement | LWX | Charles | 45 min |
| Sep 8, 7:41 PM EDT | Areal Flood Warning | PHI | Caroline | 14 hr |
| Sep 8, 8:32 PM EDT | Flash Flood Warning | LWX | Charles, Montgomery, Prince George's, Saint Mary's | 4 hr |
| Sep 8, 9:50 PM EDT | Areal Flood Warning | LWX | Frederick, Montgomery | 4 hr |
| Sep 9, 12:12 AM EDT | Coastal Flood Warning | LWX | Prince George's | 9 hr |
| Sep 9, 1:47 AM EDT | Areal Flood Warning | LWX | Frederick, Montgomery | 8 hr |
| Sep 9, 3:47 AM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 88 min |
| Sep 9, 5:36 AM EDT | Flash Flood Warning | LWX | Baltimore | 3 hr |
| Sep 9, 8:27 PM EDT | River Flood Warning | LWX | Washington | 25 hr |
| Sep 10, 7:12 PM EDT | Areal Flood Advisory | PHI | Cecil | 74 min |
| Sep 10, 7:36 PM EDT | Special Weather Statement | LWX | Harford | 24 min |
| Sep 10, 7:41 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 90 min |
| Sep 10, 9:03 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 13 hr |
| Sep 11, 4:13 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 3 more | 20 hr |
| Sep 11, 2:48 PM EDT | Flash Flood Warning | LWX | Howard | 59 min |
| Sep 11, 2:53 PM EDT | Special Weather Statement | LWX | Howard | 37 min |
| Sep 11, 3:08 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 22 min |
| Sep 11, 3:24 PM EDT | Special Weather Statement | LWX | Montgomery | 21 min |
| Sep 11, 3:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 45 min |
| Sep 11, 4:08 PM EDT | Special Weather Statement | LWX | Montgomery | 37 min |
| Sep 11, 4:36 PM EDT | Special Weather Statement | LWX | City of Baltimore | 24 min |
| Sep 11, 4:43 PM EDT | Special Weather Statement | LWX | Howard | 47 min |
| Sep 11, 5:02 PM EDT | Flash Flood Warning | LWX | Howard | 44 min |
| Sep 11, 5:18 PM EDT | Special Weather Statement | LWX | Carroll | 27 min |
| Sep 11, 5:27 PM EDT | Special Weather Statement | LWX | Anne Arundel | 33 min |
| Sep 11, 6:38 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 97 min |
| Sep 11, 6:56 PM EDT | Special Weather Statement | LWX | Washington | 34 min |
| Sep 11, 7:17 PM EDT | Special Weather Statement | AKQ | Somerset | 58 min |
| Sep 11, 7:41 PM EDT | Special Weather Statement | LWX | Washington | 49 min |
| Sep 11, 8:17 PM EDT | Special Weather Statement | AKQ | Somerset | 58 min |
| Sep 11, 10:06 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 13 hr |
| Sep 11, 10:08 PM EDT | Special Weather Statement | PHI | Cecil | 67 min |
| Sep 11, 10:29 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 46 min |
| Sep 11, 10:44 PM EDT | Areal Flood Advisory | PHI | Cecil | 107 min |
| Sep 11, 11:02 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent, Queen Anne's | 103 min |
| Sep 11, 11:05 PM EDT | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's | 85 min |
| Sep 14, 10:36 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Prince George's, City of Baltimore | 13 hr |
| Sep 14, 3:18 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 42 min |
| Sep 14, 3:22 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 3 more | 53 min |
| Sep 14, 3:26 PM EDT | Special Weather Statement | LWX | Washington | 49 min |
| Sep 14, 3:50 PM EDT | Special Weather Statement | PBZ | Garrett | 40 min |
| Sep 14, 4:04 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Sep 14, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 48 min |
| Sep 14, 4:44 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 46 min |
| Sep 14, 5:28 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 47 min |
| Sep 14, 5:34 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 41 min |
| Sep 14, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 44 min |
| Sep 14, 6:10 PM EDT | Flash Flood Warning | LWX | Washington | 68 min |
| Sep 14, 6:17 PM EDT | Special Weather Statement | LWX | Frederick | 43 min |
| Sep 14, 6:32 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 43 min |
| Sep 14, 6:37 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 38 min |
| Sep 14, 7:13 PM EDT | Special Weather Statement | LWX | Carroll, Montgomery | 47 min |
| Sep 14, 7:53 PM EDT | Special Weather Statement | PHI | Cecil | 112 min |
| Sep 14, 8:01 PM EDT | Special Weather Statement | LWX | Montgomery | 44 min |
| Sep 14, 8:05 PM EDT | Special Weather Statement | LWX | Baltimore, Carroll, Harford, City of Baltimore | 55 min |
| Sep 14, 8:46 PM EDT | Special Weather Statement | LWX | Howard | 44 min |
| Sep 14, 10:11 PM EDT | Special Weather Statement | LWX | Montgomery | 34 min |
| Sep 15, 1:05 AM EDT | Special Weather Statement | PBZ | Garrett | 55 min |
| Sep 15, 1:20 AM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 55 min |
| Sep 15, 2:08 AM EDT | Special Weather Statement | LWX | Allegany | 52 min |
| Sep 15, 2:12 AM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 48 min |
| Sep 15, 3:13 AM EDT | Special Weather Statement | LWX | Allegany | 47 min |
| Sep 15, 3:53 AM EDT | Special Weather Statement | LWX | Allegany | 52 min |
| Sep 19, 3:24 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 49 hr |
| Sep 19, 3:02 PM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 7 hr |
| Sep 19, 3:45 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 9 hr |
| Sep 22, 12:27 AM EDT | Special Weather Statement | LWX | Carroll, Frederick | 63 min |
| Sep 22, 3:43 AM EDT | Flood Watch | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 45 hr |
| Sep 22, 11:44 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 3 more | 32 hr |
| Sep 22, 2:57 PM EDT | Flash Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 29 hr |
| Sep 23, 4:32 AM EDT | Special Weather Statement | AKQ | Dorchester | 58 min |
| Sep 23, 5:10 AM EDT | Dense Fog Advisory | LWX | Frederick, Washington | 4 hr |
| Sep 23, 9:17 AM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Sep 23, 11:13 AM EDT | Flash Flood Warning | LWX | Carroll, Frederick | 4 hr |
| Sep 23, 12:20 PM EDT | Special Weather Statement | LWX | Baltimore, City of Baltimore | 55 min |
| Sep 23, 12:34 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 3 hr |
| Sep 23, 2:57 PM EDT | Areal Flood Warning | LWX | Carroll, Frederick | 99 min |
| Sep 23, 3:06 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Harford, City of Baltimore | 4 hr |
| Sep 23, 4:33 PM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 5 hr |
| Sep 23, 6:21 PM EDT | Special Weather Statement | PHI | Kent | 24 min |
| Sep 23, 9:31 PM EDT | Dense Fog Advisory | LWX | Allegany, Carroll, Frederick, Washington | 11 hr |
| Sep 23, 9:57 PM EDT | Dense Fog Advisory | PBZ | 11 hr | |
| Sep 27, 12:33 PM EDT | Special Weather Statement | LWX | Washington | 27 min |
| Sep 27, 1:54 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, City of Baltimore | 9 hr |
| Sep 27, 2:15 PM EDT | Flash Flood Watch | LWX | Baltimore, Carroll, Frederick | 6 hr |
| Sep 27, 3:20 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 40 min |
| Sep 27, 3:40 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 65 min |
| Sep 27, 4:54 PM EDT | Special Weather Statement | PHI | Caroline | 96 min |
| Sep 27, 5:01 PM EDT | Special Weather Statement | LWX | Allegany | 29 min |
| Sep 28, 2:43 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 65 hr |
| Sep 28, 7:43 AM EDT | Special Weather Statement | AKQ | Dorchester | 62 min |
| Sep 28, 8:30 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 2 hr |
| Sep 28, 8:46 AM EDT | Special Weather Statement | AKQ | Dorchester, Somerset, Wicomico, Worcester | 59 min |
| Sep 28, 9:32 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
| Sep 28, 10:05 AM EDT | Special Weather Statement | PHI | Caroline | 40 min |
| Sep 28, 1:18 PM EDT | Special Weather Statement | AKQ | Wicomico | 42 min |
| Sep 28, 1:40 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 65 min |
| Sep 28, 1:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 62 min |
| Sep 28, 2:14 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 2 hr |
| Sep 28, 2:59 PM EDT | Special Weather Statement | PHI | Cecil | 61 min |
| Sep 28, 3:54 PM EDT | Special Weather Statement | PHI | Cecil | 66 min |
| Sep 28, 4:45 PM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, Kent, City of Baltimore | 60 min |
| Sep 28, 8:12 PM EDT | Special Weather Statement | LWX | Howard | 33 min |
| Sep 28, 8:18 PM EDT | Flash Flood Warning | LWX | Prince George's | 107 min |
| Sep 28, 8:56 PM EDT | Special Weather Statement | LWX | Frederick, Howard, Prince George's | 34 min |
| Sep 28, 9:27 PM EDT | Special Weather Statement | LWX | Baltimore, Prince George's, City of Baltimore | 48 min |
| Sep 28, 9:28 PM EDT | Special Weather Statement | LWX | Baltimore, Prince George's, City of Baltimore | 47 min |
| Sep 28, 9:55 PM EDT | Special Weather Statement | LWX | Baltimore, Prince George's, City of Baltimore | 20 min |
| Sep 29, 3:34 AM EDT | Coastal Flood Statement | PHI | Caroline, Talbot | 3 hr |
| Sep 29, 3:41 AM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 9 hr |
| Sep 29, 5:04 AM EDT | Dense Fog Advisory | LWX | Carroll, Frederick, Washington | 4 hr |
| Sep 29, 2:14 PM EDT | Special Weather Statement | LWX | Montgomery | 31 min |
| Sep 29, 4:39 PM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico, Worcester | 11 hr |
| Sep 30, 11:24 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 9 hr |
| Sep 30, 5:33 PM EDT | Coastal Flood Statement | PHI | Caroline, Kent, Queen Anne's, Talbot | 48 min |
| Sep 30, 6:21 PM EDT | Coastal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 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 | 18 |
| Tornado Warning | 7 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 89 |
| Flooding | |
| Areal Flood Warning | 12 |
| Flash Flood Warning | 39 |
| River Flood Warning | 8 |
| Flash Flood Watch | 6 |
| Flood Watch | 2 |
| River Flood Watch | 13 |
| Areal Flood Advisory | 14 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Coast and beach | |
| Coastal Flood Warning | 1 |
| Coastal Flood Watch | 1 |
| Coastal Flood Advisory | 17 |
| Coastal Flood Statement | 5 |
| Rip Current Statement | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County44
- Prince George's County44
- Anne Arundel County37
- City of Baltimore37
- Charles County36
- Montgomery County31
- Saint Mary's County31
- Frederick County30
- Calvert County28
- Carroll County27
- Cecil County27
- Washington County26
- Caroline County25
- Howard County23
- Queen Anne's County22
- Kent County21
- Dorchester County16
- Talbot County16
- Harford County15
- Allegany County14
- Garrett County13
- Wicomico County13
- Somerset County12
- Worcester County8
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.