Alert archive / Maryland / 2021
Weather alerts in Maryland, August 2021
241 weather alerts in August 2021, 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 August 2021. Tap one for its archive.
- Alerts
- 241
- Warnings
- 128
- Watches
- 26
- Advisories
- 31
- Busiest day
- August 13, 202141 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 5, 4:25 PM EDT | Special Weather Statement | CTP | Allegany | 35 min |
| Aug 5, 4:58 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 29 min |
| Aug 6, 2:32 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 2 hr |
| Aug 7, 4:01 PM EDT | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 6 hr |
| Aug 7, 4:05 PM EDT | Areal Flood Advisory | AKQ | Somerset | 5 hr |
| Aug 7, 9:49 PM EDT | Areal Flood Advisory | PHI | Caroline | 5 hr |
| Aug 9, 2:41 PM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's | 3 hr |
| Aug 9, 3:52 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 19 min |
| Aug 9, 4:35 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 40 min |
| Aug 9, 4:59 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's | 79 min |
| Aug 9, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 20 min |
| Aug 9, 6:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 41 min |
| Aug 9, 6:23 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 52 min |
| Aug 9, 6:39 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 9, 6:49 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 22 min |
| Aug 9, 7:28 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 29 min |
| Aug 9, 9:32 PM EDT | Areal Flood Warning | LWX | Montgomery | 105 min |
| Aug 10, 2:38 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 6 hr |
| Aug 10, 3:33 AM EDT | Heat Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 4 days |
| Aug 10, 1:33 PM EDT | Excessive Heat Watch | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 37 hr |
| Aug 10, 1:33 PM EDT | Heat Advisory | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 29 hr |
| Aug 10, 2:30 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 3 hr |
| Aug 10, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Aug 10, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Aug 10, 5:08 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 18 min |
| Aug 10, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 50 min |
| Aug 10, 5:34 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Howard, Montgomery | 29 min |
| Aug 10, 5:53 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 29 min |
| Aug 10, 5:55 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 27 min |
| Aug 10, 6:14 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 26 min |
| Aug 10, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 46 min |
| Aug 10, 6:38 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 52 min |
| Aug 10, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 50 min |
| Aug 10, 7:01 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 24 min |
| Aug 10, 7:04 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 41 min |
| Aug 10, 7:12 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 33 min |
| Aug 10, 7:28 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 62 min |
| Aug 10, 7:42 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 33 min |
| Aug 10, 7:51 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 30 min |
| Aug 10, 8:13 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 32 min |
| Aug 10, 8:29 PM EDT | Special Weather Statement | AKQ | Dorchester | 46 min |
| Aug 10, 8:43 PM EDT | Special Weather Statement | PHI | Caroline | 32 min |
| Aug 10, 9:11 PM EDT | Special Weather Statement | AKQ | Dorchester | 49 min |
| Aug 11, 3:55 AM EDT | Heat Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 63 hr |
| Aug 11, 1:01 PM EDT | Mesoscale Discussion | SPC | Carroll, Charles, Frederick, Howard, Montgomery, Prince George's and 1 more | 89 min |
| Aug 11, 2:02 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 6 hr |
| Aug 11, 2:51 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 39 min |
| Aug 11, 2:59 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 46 min |
| Aug 11, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Aug 11, 3:15 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 45 min |
| Aug 11, 3:42 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Montgomery | 48 min |
| Aug 11, 3:47 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 88 min |
| Aug 11, 4:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard, Montgomery | 39 min |
| Aug 11, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 40 min |
| Aug 11, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Aug 11, 4:45 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 30 min |
| Aug 11, 5:01 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 44 min |
| Aug 11, 5:32 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 43 min |
| Aug 11, 6:11 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 64 min |
| Aug 11, 6:14 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 27 min |
| Aug 11, 6:44 PM EDT | Mesoscale Discussion | SPC | Cecil | 91 min |
| Aug 12, 2:15 AM EDT | Heat Advisory | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 18 hr |
| Aug 12, 6:04 PM EDT | Heat Advisory | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 25 hr |
| Aug 13, 12:33 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more | 87 min |
| Aug 13, 1:11 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 7 hr |
| Aug 13, 1:43 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 47 min |
| Aug 13, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 35 min |
| Aug 13, 3:36 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 39 min |
| Aug 13, 3:50 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Aug 13, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Aug 13, 4:30 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard, Montgomery | 45 min |
| Aug 13, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 48 min |
| Aug 13, 4:46 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 29 min |
| Aug 13, 4:48 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Cecil, Charles, Harford, Howard and 2 more | 87 min |
| Aug 13, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore | 41 min |
| Aug 13, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 41 min |
| Aug 13, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 46 min |
| Aug 13, 5:11 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 49 min |
| Aug 13, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 40 min |
| Aug 13, 5:22 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 38 min |
| Aug 13, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 50 min |
| Aug 13, 5:34 PM EDT | Special Weather Statement | CTP | Harford | 41 min |
| Aug 13, 5:35 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 25 min |
| Aug 13, 5:52 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 24 min |
| Aug 13, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Montgomery, Prince George's | 49 min |
| Aug 13, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 44 min |
| Aug 13, 6:02 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 58 min |
| Aug 13, 6:02 PM EDT | Mesoscale Discussion | SPC | Wicomico, Worcester | 58 min |
| Aug 13, 6:05 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 40 min |
| Aug 13, 6:06 PM EDT | Areal Flood Warning | LWX | Montgomery | 114 min |
| Aug 13, 6:10 PM EDT | Areal Flood Warning | LWX | Baltimore, City of Baltimore | 110 min |
| Aug 13, 6:15 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 45 min |
| Aug 13, 6:29 PM EDT | Special Weather Statement | PHI | Caroline | 31 min |
| Aug 13, 6:29 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 25 min |
| Aug 13, 6:33 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 42 min |
| Aug 13, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 30 min |
| Aug 13, 7:07 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 39 min |
| Aug 13, 7:11 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 34 min |
| Aug 13, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 33 min |
| Aug 13, 7:23 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 52 min |
| Aug 13, 7:41 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 21 min |
| Aug 13, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 47 min |
| Aug 13, 7:57 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 93 min |
| Aug 13, 7:59 PM EDT | Special Weather Statement | AKQ | Somerset | 31 min |
| Aug 13, 8:10 PM EDT | Special Weather Statement | AKQ | Wicomico, Worcester | 50 min |
| Aug 13, 8:40 PM EDT | Areal Flood Advisory | PHI | Caroline | 62 min |
| Aug 14, 1:10 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Somerset and 1 more | 2 hr |
| Aug 14, 6:14 PM EDT | Flash Flood Watch | LWX | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's | 10 hr |
| Aug 14, 10:28 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's | 47 min |
| Aug 14, 10:37 PM EDT | Special Weather Statement | AKQ | Dorchester | 23 min |
| Aug 14, 10:44 PM EDT | Flash Flood Warning | LWX | Calvert, Charles, Prince George's | 3 hr |
| Aug 14, 11:02 PM EDT | Special Weather Statement | PHI | Talbot | 43 min |
| Aug 14, 11:05 PM EDT | Special Weather Statement | AKQ | Dorchester | 40 min |
| Aug 14, 11:54 PM EDT | Areal Flood Warning | LWX | Calvert, Charles, Saint Mary's | 4 hr |
| Aug 15, 12:13 AM EDT | Flash Flood Warning | LWX | Prince George's | 3 hr |
| Aug 15, 12:17 AM EDT | Areal Flood Advisory | AKQ | Dorchester, Wicomico | 3 hr |
| Aug 15, 12:42 AM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 2 hr |
| Aug 15, 1:25 AM EDT | Areal Flood Warning | LWX | Calvert, Charles, Prince George's | 2 hr |
| Aug 15, 5:47 PM EDT | Flash Flood Watch | LWX | Charles | 18 hr |
| Aug 16, 5:24 PM EDT | Flash Flood Warning | LWX | Prince George's | 2 hr |
| Aug 16, 5:53 PM EDT | Areal Flood Advisory | AKQ | Dorchester | 2 hr |
| Aug 16, 8:47 PM EDT | Flash Flood Warning | LWX | Washington | 2 hr |
| Aug 16, 9:04 PM EDT | Flash Flood Warning | LWX | Allegany | 2 hr |
| Aug 16, 11:32 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Aug 17, 12:39 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 100 min |
| Aug 17, 2:17 AM EDT | Areal Flood Warning | LWX | Montgomery | 4 hr |
| Aug 17, 8:54 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Cecil, Harford, City of Baltimore | 9 hr |
| Aug 17, 10:17 AM EDT | Areal Flood Advisory | AKQ | Dorchester | 3 hr |
| Aug 17, 12:00 PM EDT | Areal Flood Advisory | AKQ | Dorchester, Wicomico | 3 hr |
| Aug 17, 1:54 PM EDT | Flash Flood Watch | LWX | Allegany, Baltimore, Carroll, Frederick, Harford, Howard and 3 more | 27 hr |
| Aug 17, 6:40 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, City of Baltimore | 11 hr |
| Aug 18, 8:46 AM EDT | Mesoscale Discussion | SPC | Frederick, Washington | 119 min |
| Aug 18, 10:58 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 9 more | 92 min |
| Aug 18, 11:37 AM EDT | Tornado Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 12 more | 11 hr |
| Aug 18, 3:12 PM EDT | Tornado Warning | LWX | Allegany, Washington | 16 min |
| Aug 18, 3:20 PM EDT | Coastal Flood Statement | AKQ | Dorchester | 11 hr |
| Aug 18, 3:29 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more | 91 min |
| Aug 18, 4:29 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 14 min |
| Aug 18, 4:47 PM EDT | Special Weather Statement | AKQ | Dorchester | 43 min |
| Aug 18, 4:57 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 6 more | 93 min |
| Aug 18, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 47 min |
| Aug 18, 5:26 PM EDT | Tornado Warning | LWX | Frederick, Washington | 17 min |
| Aug 18, 6:31 PM EDT | Tornado Warning | LWX | Cecil | 29 min |
| Aug 18, 7:01 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Harford, City of Baltimore | 14 hr |
| Aug 18, 8:57 PM EDT | Tornado Warning | LWX | Baltimore | 22 min |
| Aug 18, 11:59 PM EDT | Flash Flood Warning | LWX | Cecil | 2 hr |
| Aug 19, 2:11 PM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Charles, Howard and 4 more | 28 hr |
| Aug 19, 2:57 PM EDT | Flash Flood Watch | AKQ | Dorchester, Somerset, Wicomico | 31 hr |
| Aug 19, 3:22 PM EDT | Flash Flood Watch | PHI | Caroline, Kent, Queen Anne's, Talbot | 23 hr |
| Aug 19, 4:28 PM EDT | Beach Hazards Statement | AKQ | Worcester | 3 days |
| Aug 19, 10:01 PM EDT | Special Weather Statement | AKQ | Dorchester, Somerset | 59 min |
| Aug 19, 10:59 PM EDT | Special Weather Statement | AKQ | Dorchester, Wicomico | 61 min |
| Aug 20, 12:07 AM EDT | Special Weather Statement | AKQ | Worcester | 53 min |
| Aug 20, 4:52 AM EDT | Flash Flood Warning | LWX | Frederick | 102 min |
| Aug 20, 5:18 AM EDT | Special Weather Statement | AKQ | Somerset, Wicomico, Worcester | 57 min |
| Aug 20, 5:39 AM EDT | Special Weather Statement | PHI | Caroline | 36 min |
| Aug 20, 6:09 AM EDT | Special Weather Statement | PHI | Caroline | 36 min |
| Aug 20, 6:15 AM EDT | Special Weather Statement | AKQ | Worcester | 45 min |
| Aug 20, 6:34 AM EDT | Areal Flood Warning | LWX | Frederick | 2 hr |
| Aug 20, 6:39 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 8 hr |
| Aug 20, 7:35 AM EDT | Areal Flood Warning | LWX | Montgomery, Prince George's | 9 hr |
| Aug 20, 7:55 AM EDT | Flash Flood Warning | LWX | Montgomery | 2 hr |
| Aug 20, 8:16 AM EDT | Flash Flood Warning | LWX | Montgomery | 111 min |
| Aug 20, 8:21 AM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 101 min |
| Aug 20, 10:23 AM EDT | Special Weather Statement | AKQ | Dorchester | 67 min |
| Aug 20, 11:07 AM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 3 hr |
| Aug 20, 11:20 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Calvert | 3 hr |
| Aug 20, 12:01 PM EDT | Areal Flood Advisory | AKQ | Dorchester | 119 min |
| Aug 21, 2:11 AM EDT | Areal Flood Advisory | AKQ | Somerset | 3 hr |
| Aug 21, 3:38 PM EDT | Special Weather Statement | AKQ | Dorchester, Wicomico | 67 min |
| Aug 22, 5:45 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 2 hr |
| Aug 22, 9:28 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 47 min |
| Aug 22, 9:41 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 2 hr |
| Aug 22, 10:01 AM EDT | Special Weather Statement | PHI | Caroline | 44 min |
| Aug 22, 11:44 AM EDT | Areal Flood Advisory | AKQ | Dorchester, Wicomico | 3 hr |
| Aug 22, 1:14 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 46 min |
| Aug 22, 1:23 PM EDT | Areal Flood Advisory | AKQ | Worcester | 3 hr |
| Aug 22, 1:51 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 39 min |
| Aug 22, 2:14 PM EDT | Areal Flood Warning | LWX | Saint Mary's | 2 hr |
| Aug 22, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 49 min |
| Aug 22, 9:20 PM EDT | Coastal Flood Statement | AKQ | Dorchester | 7 hr |
| Aug 23, 2:57 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 8 hr |
| Aug 25, 4:21 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 39 min |
| Aug 25, 9:20 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 40 min |
| Aug 26, 3:31 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 44 min |
| Aug 26, 4:03 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 42 min |
| Aug 26, 5:00 PM EDT | Special Weather Statement | CTP | Garrett | 45 min |
| Aug 26, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 41 min |
| Aug 27, 2:56 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Cecil, Harford, Howard, Montgomery and 2 more | 17 hr |
| Aug 27, 1:41 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 3 hr |
| Aug 27, 2:35 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Aug 27, 3:05 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 40 min |
| Aug 27, 3:25 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 30 min |
| Aug 27, 3:36 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 19 min |
| Aug 27, 4:11 PM EDT | Areal Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 27, 4:14 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 46 min |
| Aug 27, 4:44 PM EDT | Areal Flood Warning | LWX | Prince George's | 3 hr |
| Aug 27, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 33 min |
| Aug 27, 5:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 20 min |
| Aug 27, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 39 min |
| Aug 27, 5:52 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 53 min |
| Aug 27, 6:10 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 32 min |
| Aug 27, 6:11 PM EDT | Areal Flood Warning | LWX | Charles, Prince George's | 3 hr |
| Aug 27, 6:13 PM EDT | Areal Flood Warning | LWX | Baltimore, Harford | 3 hr |
| Aug 27, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 29 min |
| Aug 27, 6:28 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 47 min |
| Aug 27, 6:48 PM EDT | Special Weather Statement | AKQ | Dorchester | 57 min |
| Aug 27, 7:10 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 65 min |
| Aug 27, 7:37 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 34 min |
| Aug 27, 7:40 PM EDT | Special Weather Statement | AKQ | Dorchester | 50 min |
| Aug 27, 8:12 PM EDT | Special Weather Statement | AKQ | Wicomico | 48 min |
| Aug 27, 9:35 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 40 min |
| Aug 27, 10:08 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 52 min |
| Aug 27, 11:19 PM EDT | Special Weather Statement | PHI | Talbot | 26 min |
| Aug 28, 12:07 AM EDT | Special Weather Statement | AKQ | Somerset, Wicomico, Worcester | 38 min |
| Aug 28, 12:44 AM EDT | Special Weather Statement | AKQ | Worcester | 46 min |
| Aug 28, 1:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Washington | 115 min |
| Aug 28, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 40 min |
| Aug 28, 4:24 PM EDT | Areal Flood Warning | LWX | Allegany | 3 hr |
| Aug 28, 7:18 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 42 min |
| Aug 29, 7:03 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 5 hr |
| Aug 30, 4:54 AM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 62 hr |
| Aug 30, 5:00 AM EDT | Flash Flood Watch | PHI | Caroline, Kent, Queen Anne's, Talbot | 71 hr |
| Aug 30, 11:48 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Charles, Harford, Howard, Montgomery and 2 more | 6 hr |
| Aug 30, 3:46 PM EDT | Special Weather Statement | PHI | Kent | 29 min |
| Aug 30, 4:27 PM EDT | Special Weather Statement | PHI | Kent | 33 min |
| Aug 30, 4:51 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Howard and 6 more | 84 min |
| Aug 30, 4:54 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 51 min |
| Aug 30, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 25 min |
| Aug 30, 7:48 PM EDT | Special Weather Statement | AKQ | Somerset | 42 min |
| Aug 30, 9:13 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 4 hr |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Washington | 24 hr |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Allegany | 21 days |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Washington | 21 days |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Frederick | 21 days |
| Aug 31, 12:56 AM EDT | River Flood Watch | LWX | Allegany | 64 hr |
| Aug 31, 11:28 AM EDT | River Flood Watch | LWX | Allegany | 21 days |
| Aug 31, 11:29 AM EDT | River Flood Watch | LWX | Montgomery | 63 hr |
| Aug 31, 11:40 AM EDT | River Flood Watch | LWX | Washington | 21 days |
| Aug 31, 11:43 AM EDT | River Flood Watch | LWX | Washington | 21 days |
| Aug 31, 11:45 AM EDT | River Flood Watch | LWX | Washington | 28 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.
- Prince George's County59
- Montgomery County56
- Anne Arundel County44
- Baltimore County40
- Charles County39
- Washington County35
- Harford County35
- Frederick County32
- City of Baltimore30
- Calvert County29
- Howard County29
- Caroline County28
- Queen Anne's County27
- Dorchester County25
- Kent County25
- Carroll County25
- Saint Mary's County25
- Cecil County24
- Talbot County19
- Allegany County18
- Wicomico County13
- Somerset County11
- Worcester County11
- Garrett County2
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.