Alert archive / Maryland / 2018
Weather alerts in Maryland, September 2018
250 weather alerts in September 2018, 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 2018. Tap one for its archive.
- Alerts
- 250
- Warnings
- 102
- Watches
- 35
- Advisories
- 54
- Busiest day
- September 8, 201824 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 |
|---|---|---|---|---|
| Aug 31, 8:14 PM EDT | Areal Flood Advisory | AKQ | Worcester | 2 hr |
| Aug 31, 8:37 PM EDT | Special Weather Statement | AKQ | Worcester | 23 min |
| Aug 31, 8:51 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 39 min |
| Aug 31, 8:55 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 103 min |
| Aug 31, 8:55 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Aug 31, 9:01 PM EDT | Special Weather Statement | AKQ | Worcester | 44 min |
| Aug 31, 9:23 PM EDT | Special Weather Statement | PHI | Queen Anne's | 37 min |
| Aug 31, 9:28 PM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 3 hr |
| Aug 31, 9:49 PM EDT | Areal Flood Warning | LWX | Montgomery | 2 hr |
| Aug 31, 10:41 PM EDT | Special Weather Statement | PHI | Talbot | 34 min |
| Aug 31, 11:10 PM EDT | Special Weather Statement | PHI | Talbot | 35 min |
| Sep 1, 4:50 AM EDT | Areal Flood Warning | LWX | Charles | 3 hr |
| Sep 1, 2:50 PM EDT | Areal Flood Advisory | PBZ | Garrett | 28 min |
| Sep 1, 3:05 PM EDT | Special Weather Statement | AKQ | Worcester | 25 min |
| Sep 1, 3:11 PM EDT | Flash Flood Warning | PBZ | Garrett | 49 min |
| Sep 1, 4:45 PM EDT | Special Weather Statement | AKQ | Dorchester | 45 min |
| Sep 1, 7:00 PM EDT | Areal Flood Warning | LWX | Frederick, Montgomery | 3 hr |
| Sep 1, 7:27 PM EDT | Areal Flood Warning | LWX | Frederick | 2 hr |
| Sep 1, 7:45 PM EDT | Special Weather Statement | AKQ | Dorchester | 30 min |
| Sep 1, 9:52 PM EDT | Areal Flood Warning | LWX | Charles, Montgomery, Prince George's | 109 min |
| Sep 2, 7:23 AM EDT | Dense Fog Advisory | LWX | Allegany, Washington | 2 hr |
| Sep 2, 7:28 AM EDT | Special Weather Statement | AKQ | Somerset | 47 min |
| Sep 2, 5:42 PM EDT | Special Weather Statement | AKQ | Wicomico | 33 min |
| Sep 3, 3:02 AM EDT | Heat Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 days |
| Sep 3, 3:05 PM EDT | Special Weather Statement | AKQ | Somerset | 40 min |
| Sep 3, 3:46 PM EDT | Special Weather Statement | AKQ | Wicomico | 44 min |
| Sep 4, 2:17 AM EDT | Heat Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Frederick, Harford and 6 more | 17 hr |
| Sep 4, 3:49 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 26 min |
| Sep 4, 4:11 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 49 min |
| Sep 4, 4:25 PM EDT | Special Weather Statement | AKQ | Somerset | 50 min |
| Sep 5, 4:37 PM EDT | Special Weather Statement | AKQ | Worcester | 38 min |
| Sep 5, 4:39 PM EDT | Special Weather Statement | AKQ | Wicomico | 51 min |
| Sep 5, 5:30 PM EDT | Special Weather Statement | AKQ | Caroline | 30 min |
| Sep 5, 5:58 PM EDT | Special Weather Statement | PHI | Caroline | 62 min |
| Sep 5, 6:40 PM EDT | Special Weather Statement | PHI | Caroline | 65 min |
| Sep 6, 4:00 PM EDT | Areal Flood Warning | LWX | Allegany | 4 hr |
| Sep 6, 4:15 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 30 min |
| Sep 6, 4:21 PM EDT | Flash Flood Warning | LWX | Allegany | 3 hr |
| Sep 6, 7:08 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 36 min |
| Sep 6, 7:14 PM EDT | Areal Flood Warning | LWX | Harford | 2 hr |
| Sep 6, 7:42 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 48 min |
| Sep 6, 8:27 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Sep 7, 3:29 AM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Howard, Montgomery, Prince George's and 1 more | 19 hr |
| Sep 7, 1:45 PM EDT | Special Weather Statement | AKQ | Worcester | 45 min |
| Sep 7, 2:33 PM EDT | Special Weather Statement | AKQ | Wicomico, Worcester | 42 min |
| Sep 7, 3:11 PM EDT | Areal Flood Advisory | AKQ | Somerset, Wicomico, Worcester | 2 hr |
| Sep 7, 3:20 PM EDT | Special Weather Statement | PHI | Caroline | 40 min |
| Sep 7, 4:12 PM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 94 min |
| Sep 7, 4:48 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 42 min |
| Sep 7, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Prince George's | 34 min |
| Sep 7, 5:34 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Sep 7, 5:39 PM EDT | Areal Flood Warning | LWX | Montgomery, Prince George's | 10 hr |
| Sep 7, 5:40 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Sep 7, 5:46 PM EDT | Areal Flood Warning | LWX | Allegany | 7 hr |
| Sep 7, 5:53 PM EDT | Areal Flood Warning | LWX | Montgomery, Prince George's | 4 hr |
| Sep 7, 6:00 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Sep 7, 6:11 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Howard, City of Baltimore | 7 hr |
| Sep 7, 6:17 PM EDT | Areal Flood Warning | LWX | Frederick, Washington | 4 hr |
| Sep 7, 6:39 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 36 min |
| Sep 7, 6:48 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, City of Baltimore | 3 hr |
| Sep 7, 6:58 PM EDT | Areal Flood Advisory | PBZ | Garrett | 2 hr |
| Sep 7, 7:09 PM EDT | Areal Flood Warning | LWX | Carroll, Howard, Montgomery, Prince George's | 6 hr |
| Sep 7, 7:58 PM EDT | Areal Flood Warning | LWX | Montgomery | 3 hr |
| Sep 7, 10:39 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Howard | 2 hr |
| Sep 7, 10:51 PM EDT | Special Weather Statement | PHI | Talbot | 39 min |
| Sep 7, 11:00 PM EDT | Special Weather Statement | AKQ | Dorchester | 60 min |
| Sep 7, 11:36 PM EDT | Special Weather Statement | PHI | Talbot | 24 min |
| Sep 7, 11:47 PM EDT | Special Weather Statement | AKQ | Dorchester | 58 min |
| Sep 7, 11:58 PM EDT | Special Weather Statement | AKQ | Worcester | 47 min |
| Sep 8, 12:30 AM EDT | Areal Flood Advisory | AKQ | Worcester | 3 hr |
| Sep 8, 2:19 AM EDT | Special Weather Statement | PHI | Queen Anne's | 41 min |
| Sep 8, 3:14 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's, Talbot | 3 hr |
| Sep 8, 3:34 AM EDT | Flood Watch | PBZ | 49 hr | |
| Sep 8, 3:34 AM EDT | Flood Watch | PHI | Cecil | 60 hr |
| Sep 8, 4:40 AM EDT | Special Weather Statement | AKQ | Dorchester | 50 min |
| Sep 8, 6:01 AM EDT | Areal Flood Warning | PHI | Kent, Queen Anne's, Talbot | 4 hr |
| Sep 8, 6:19 AM EDT | Special Weather Statement | AKQ | Wicomico | 41 min |
| Sep 8, 6:40 AM EDT | Coastal Flood Advisory | AKQ | Worcester | 21 hr |
| Sep 8, 6:52 AM EDT | Special Weather Statement | AKQ | Worcester | 38 min |
| Sep 8, 7:30 AM EDT | Special Weather Statement | AKQ | Somerset | 45 min |
| Sep 8, 8:15 AM EDT | Areal Flood Advisory | PHI | Cecil | 119 min |
| Sep 8, 2:34 PM EDT | Coastal Flood Watch | LWX | Saint Mary's | 15 hr |
| Sep 8, 2:34 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more | 6 days |
| Sep 8, 2:46 PM EDT | Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Harford and 5 more | 39 hr |
| Sep 8, 5:18 PM EDT | Beach Hazards Statement | AKQ | Worcester | 9 days |
| Sep 8, 5:18 PM EDT | Rip Current Statement | AKQ | Worcester | 9 days |
| Sep 8, 5:18 PM EDT | High Surf Advisory | AKQ | Worcester | 47 hr |
| Sep 9, 3:13 AM EDT | Areal Flood Warning | PBZ | Garrett | 3 hr |
| Sep 9, 5:15 AM EDT | Coastal Flood Warning | LWX | Anne Arundel, Charles, Saint Mary's | 3 days |
| Sep 9, 5:35 AM EDT | Coastal Flood Statement | AKQ | Worcester | 7 hr |
| Sep 9, 5:48 AM EDT | Areal Flood Warning | PBZ | Garrett | 6 hr |
| Sep 9, 7:44 AM EDT | Areal Flood Warning | LWX | Allegany | 18 hr |
| Sep 9, 9:36 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more | 34 hr |
| Sep 9, 9:45 AM EDT | Areal Flood Warning | LWX | Washington | 12 hr |
| Sep 9, 12:14 PM EDT | Areal Flood Warning | PBZ | Garrett | 24 hr |
| Sep 9, 12:19 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 56 hr |
| Sep 9, 12:32 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Montgomery, Prince George's | 6 hr |
| Sep 9, 12:46 PM EDT | River Flood Warning | LWX | Allegany | 28 hr |
| Sep 9, 12:48 PM EDT | River Flood Warning | LWX | Washington | 52 hr |
| Sep 9, 12:50 PM EDT | River Flood Warning | LWX | Frederick | 48 hr |
| Sep 9, 12:54 PM EDT | River Flood Warning | LWX | Washington | 71 hr |
| Sep 9, 12:56 PM EDT | River Flood Watch | LWX | Frederick | 5 days |
| Sep 9, 12:56 PM EDT | River Flood Watch | LWX | Montgomery | 5 days |
| Sep 9, 12:57 PM EDT | River Flood Watch | LWX | Montgomery | 5 days |
| Sep 9, 1:20 PM EDT | River Flood Warning | LWX | Allegany | 8 hr |
| Sep 9, 2:38 PM EDT | Coastal Flood Watch | LWX | Anne Arundel, Saint Mary's | 38 hr |
| Sep 9, 5:58 PM EDT | River Flood Warning | LWX | Allegany | 23 hr |
| Sep 9, 6:06 PM EDT | River Flood Warning | LWX | Frederick | 59 hr |
| Sep 9, 6:10 PM EDT | River Flood Warning | LWX | Montgomery | 69 hr |
| Sep 9, 9:35 PM EDT | Areal Flood Warning | LWX | Washington | 22 hr |
| Sep 10, 1:18 AM EDT | Areal Flood Warning | LWX | Allegany | 15 hr |
| Sep 10, 4:40 AM EDT | Coastal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 3 hr |
| Sep 10, 4:47 AM EDT | River Flood Warning | LWX | Montgomery | 49 hr |
| Sep 10, 5:02 AM EDT | Coastal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 21 hr |
| Sep 10, 5:42 AM EDT | Coastal Flood Advisory | AKQ | Worcester | 21 hr |
| Sep 10, 8:00 AM EDT | River Flood Warning | LWX | Allegany | 8 hr |
| Sep 10, 8:11 AM EDT | Coastal Flood Watch | LWX | Saint Mary's | 15 hr |
| Sep 10, 8:11 AM EDT | Coastal Flood Warning | LWX | Saint Mary's | 46 hr |
| Sep 10, 11:13 PM EDT | Coastal Flood Advisory | LWX | Harford | 39 hr |
| Sep 11, 4:40 AM EDT | Coastal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 10 hr |
| Sep 11, 4:50 AM EDT | Coastal Flood Watch | LWX | Saint Mary's | 9 hr |
| Sep 11, 5:24 AM EDT | Dense Fog Advisory | LWX | Anne Arundel, Baltimore, Charles, Howard, Montgomery, Prince George's and 1 more | 4 hr |
| Sep 11, 5:48 AM EDT | Coastal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 14 hr |
| Sep 11, 8:25 AM EDT | Coastal Flood Advisory | AKQ | Worcester | 10 hr |
| Sep 11, 1:46 PM EDT | Special Weather Statement | AKQ | Wicomico | 29 min |
| Sep 11, 1:50 PM EDT | Special Weather Statement | AKQ | Wicomico | 40 min |
| Sep 11, 2:31 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 2 hr |
| Sep 11, 2:45 PM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 3 hr |
| Sep 11, 3:29 PM EDT | Special Weather Statement | AKQ | Caroline | 46 min |
| Sep 11, 3:33 PM EDT | Special Weather Statement | AKQ | Wicomico | 42 min |
| Sep 11, 4:16 PM EDT | Areal Flood Advisory | AKQ | Dorchester | 59 min |
| Sep 11, 5:29 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 37 hr |
| Sep 12, 2:05 AM EDT | Dense Fog Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 8 hr |
| Sep 12, 3:57 AM EDT | Coastal Flood Advisory | LWX | Baltimore, City of Baltimore | 8 hr |
| Sep 12, 4:18 PM EDT | Coastal Flood Watch | AKQ | Dorchester, Somerset, Wicomico | 25 hr |
| Sep 12, 4:36 PM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Sep 12, 5:03 PM EDT | Areal Flood Warning | LWX | Carroll, Howard | 4 hr |
| Sep 12, 6:08 PM EDT | Areal Flood Warning | LWX | Montgomery | 3 hr |
| Sep 12, 7:05 PM EDT | High Surf Advisory | AKQ | Worcester | 44 hr |
| Sep 12, 7:56 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Charles, Harford, Saint Mary's, City of Baltimore | 5 days |
| Sep 13, 2:48 AM EDT | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Charles, Saint Mary's, City of Baltimore | 59 hr |
| Sep 13, 6:24 AM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico | 54 hr |
| Sep 13, 8:36 AM EDT | Coastal Flood Advisory | LWX | Harford | 16 hr |
| Sep 13, 2:17 PM EDT | Areal Flood Warning | LWX | Washington | 6 hr |
| Sep 13, 2:37 PM EDT | Coastal Flood Warning | LWX | Anne Arundel, Saint Mary's | 53 hr |
| Sep 13, 2:37 PM EDT | Coastal Flood Advisory | LWX | Baltimore, Calvert, City of Baltimore | 61 hr |
| Sep 13, 5:02 PM EDT | River Flood Warning | LWX | Washington | 7 hr |
| Sep 14, 11:29 AM EDT | Coastal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 17 hr |
| Sep 15, 4:42 AM EDT | Coastal Flood Advisory | LWX | Baltimore, Saint Mary's, City of Baltimore | 19 hr |
| Sep 15, 4:51 AM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 24 hr |
| Sep 16, 3:31 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more | 56 hr |
| Sep 16, 3:11 PM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 6 more | 52 hr |
| Sep 16, 9:22 PM EDT | River Flood Watch | LWX | Washington | 25 hr |
| Sep 16, 9:24 PM EDT | River Flood Watch | LWX | Frederick | 24 hr |
| Sep 16, 9:26 PM EDT | River Flood Watch | LWX | Washington | 12 hr |
| Sep 16, 9:28 PM EDT | River Flood Watch | LWX | Montgomery | 42 hr |
| Sep 16, 9:31 PM EDT | River Flood Watch | LWX | Montgomery | 24 hr |
| Sep 16, 9:38 PM EDT | River Flood Watch | LWX | Washington | 57 hr |
| Sep 17, 3:50 AM EDT | Flood Watch | PBZ | 15 hr | |
| Sep 17, 10:07 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 26 hr |
| Sep 17, 2:13 PM EDT | Coastal Flood Warning | LWX | Anne Arundel | 16 hr |
| Sep 17, 3:25 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Saint Mary's | 2 hr |
| Sep 17, 3:38 PM EDT | Tornado Warning | LWX | Charles | 22 min |
| Sep 17, 3:42 PM EDT | Tornado Watch | SPC | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 4 hr |
| Sep 17, 6:46 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 8 hr |
| Sep 17, 7:09 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's, Talbot and 1 more | 2 hr |
| Sep 18, 12:34 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 6 hr |
| Sep 18, 1:56 AM EDT | Areal Flood Warning | LWX | Prince George's | 6 hr |
| Sep 18, 2:06 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Howard, Prince George's, City of Baltimore | 3 hr |
| Sep 18, 2:09 AM EDT | Special Weather Statement | PHI | Cecil | 81 min |
| Sep 18, 2:26 AM EDT | Areal Flood Warning | LWX | Montgomery | 9 hr |
| Sep 18, 2:38 AM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Sep 18, 3:11 AM EDT | Areal Flood Warning | LWX | Baltimore, Harford | 3 hr |
| Sep 18, 9:27 AM EDT | Flash Flood Watch | PHI | Cecil | 6 hr |
| Sep 18, 5:18 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 3 hr |
| Sep 20, 1:59 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more | 45 hr |
| Sep 20, 3:22 PM EDT | Coastal Flood Watch | LWX | Anne Arundel | 23 hr |
| Sep 20, 3:22 PM EDT | Coastal Flood Warning | LWX | Anne Arundel, Baltimore, Saint Mary's, City of Baltimore | 20 hr |
| Sep 20, 3:26 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 13 hr |
| Sep 21, 2:26 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Harford, City of Baltimore | 32 hr |
| Sep 21, 3:01 AM EDT | Coastal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Sep 21, 4:14 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 12 hr |
| Sep 21, 4:47 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 12 hr |
| Sep 22, 7:02 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 118 min |
| Sep 23, 8:09 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more | 3 days |
| Sep 24, 3:14 AM EDT | Beach Hazards Statement | AKQ | Worcester | 41 hr |
| Sep 24, 3:14 AM EDT | Rip Current Statement | AKQ | Worcester | 41 hr |
| Sep 24, 4:01 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 14 hr |
| Sep 24, 4:27 AM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 42 hr |
| Sep 24, 6:46 AM EDT | Coastal Flood Watch | LWX | Anne Arundel, Saint Mary's | 29 hr |
| Sep 24, 8:26 PM EDT | Coastal Flood Warning | LWX | Anne Arundel, Saint Mary's | 38 hr |
| Sep 24, 9:09 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 47 hr |
| Sep 25, 2:49 AM EDT | Coastal Flood Watch | LWX | Saint Mary's | 12 hr |
| Sep 25, 5:15 AM EDT | Coastal Flood Statement | AKQ | Worcester | 7 hr |
| Sep 25, 3:15 PM EDT | Coastal Flood Watch | LWX | Anne Arundel | 19 hr |
| Sep 26, 11:00 AM EDT | River Flood Warning | LWX | Washington | 21 hr |
| Sep 26, 3:40 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 11 more | 3 hr |
| Sep 26, 4:32 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 58 min |
| Sep 26, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 4 hr |
| Sep 26, 5:03 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 42 min |
| Sep 26, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Sep 26, 6:28 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Howard, Montgomery | 11 hr |
| Sep 26, 6:41 PM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 3 hr |
| Sep 26, 6:41 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 49 min |
| Sep 26, 6:50 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard | 55 min |
| Sep 26, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 52 min |
| Sep 26, 7:06 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 54 min |
| Sep 26, 7:16 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 43 min |
| Sep 26, 7:31 PM EDT | Areal Flood Advisory | PHI | Cecil | 106 min |
| Sep 26, 7:48 PM EDT | Special Weather Statement | AKQ | Dorchester | 42 min |
| Sep 26, 7:53 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 52 min |
| Sep 26, 8:01 PM EDT | Special Weather Statement | PHI | Queen Anne's, Talbot | 29 min |
| Sep 26, 8:25 PM EDT | Special Weather Statement | PHI | Talbot | 35 min |
| Sep 26, 8:53 PM EDT | Special Weather Statement | PHI | Caroline | 37 min |
| Sep 27, 12:08 AM EDT | River Flood Warning | LWX | Montgomery | 13 hr |
| Sep 27, 2:39 AM EDT | Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Harford and 5 more | 27 hr |
| Sep 27, 3:24 AM EDT | Flood Watch | PHI | Cecil, Kent | 27 hr |
| Sep 27, 4:04 AM EDT | Flood Watch | PBZ | 20 hr | |
| Sep 27, 1:37 PM EDT | River Flood Warning | LWX | Allegany | 14 hr |
| Sep 27, 4:53 PM EDT | River Flood Watch | LWX | Montgomery | 5 hr |
| Sep 27, 6:05 PM EDT | Coastal Flood Statement | AKQ | Dorchester | 14 hr |
| Sep 27, 8:26 PM EDT | Areal Flood Warning | PBZ | Garrett | 6 hr |
| Sep 27, 8:36 PM EDT | Areal Flood Warning | LWX | Allegany | 9 hr |
| Sep 27, 9:26 PM EDT | River Flood Warning | LWX | Washington | 61 hr |
| Sep 27, 9:31 PM EDT | River Flood Warning | LWX | Montgomery | 3 days |
| Sep 27, 9:34 PM EDT | River Flood Watch | LWX | Frederick | 62 hr |
| Sep 27, 10:06 PM EDT | Areal Flood Warning | LWX | Allegany, Washington | 31 hr |
| Sep 27, 11:37 PM EDT | River Flood Warning | LWX | Montgomery | 11 hr |
| Sep 27, 11:45 PM EDT | River Flood Warning | LWX | Garrett | 4 hr |
| Sep 28, 12:09 AM EDT | Areal Flood Warning | LWX | Carroll, Frederick, Washington | 22 hr |
| Sep 28, 12:53 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Harford, Saint Mary's | 37 hr |
| Sep 28, 1:09 AM EDT | Areal Flood Warning | LWX | Carroll, Frederick, Howard, Montgomery, Prince George's | 11 hr |
| Sep 28, 2:03 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, Prince George's and 1 more | 20 hr |
| Sep 28, 3:03 AM EDT | Areal Flood Advisory | PHI | Cecil | 6 hr |
| Sep 28, 3:46 AM EDT | River Flood Warning | LWX | Frederick | 56 hr |
| Sep 28, 3:49 AM EDT | River Flood Warning | LWX | Montgomery | 56 hr |
| Sep 28, 3:54 AM EDT | River Flood Warning | LWX | Washington | 22 hr |
| Sep 28, 3:55 AM EDT | River Flood Warning | LWX | Frederick | 22 hr |
| Sep 28, 3:57 AM EDT | River Flood Watch | LWX | Allegany | 29 hr |
| Sep 28, 8:44 AM EDT | River Flood Watch | LWX | Washington | 41 hr |
| Sep 28, 9:53 AM EDT | River Flood Warning | LWX | Allegany | 16 hr |
| Sep 28, 9:54 AM EDT | River Flood Warning | LWX | Washington | 32 hr |
| Sep 28, 1:26 PM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 8 hr |
| Sep 28, 1:56 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 8 hr |
| Sep 29, 4:14 AM EDT | Beach Hazards Statement | AKQ | Worcester | 64 hr |
| Sep 29, 4:14 AM EDT | Rip Current Statement | AKQ | Worcester | 64 hr |
| Sep 29, 4:24 AM EDT | Dense Fog Advisory | LWX | Allegany | 6 hr |
| Sep 29, 10:55 AM EDT | Coastal Flood Statement | AKQ | Dorchester | 9 hr |
| Sep 29, 2:50 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 8 hr |
| Sep 29, 6:48 PM EDT | Coastal Flood Advisory | LWX | Harford | 19 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Anne Arundel County42
- Baltimore County34
- Montgomery County34
- City of Baltimore30
- Worcester County25
- Washington County25
- Saint Mary's County25
- Talbot County24
- Frederick County23
- Dorchester County22
- Allegany County22
- Wicomico County22
- Harford County22
- Prince George's County21
- Howard County21
- Charles County20
- Caroline County20
- Queen Anne's County19
- Somerset County18
- Cecil County17
- Carroll County16
- Kent County14
- Calvert County13
- Garrett County9
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.