Alert archive / Maryland / 2023
Weather alerts in Maryland, September 2023
159 weather alerts in September 2023, 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 2023. Tap one for its archive.
- Alerts
- 159
- Warnings
- 69
- Watches
- 12
- Advisories
- 32
- Busiest day
- September 9, 202339 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, 8:43 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 15 hr |
| Sep 1, 1:56 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Charles, Saint Mary's | 10 hr |
| Sep 1, 2:42 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 13 hr |
| Sep 2, 2:35 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 7 hr |
| Sep 2, 3:02 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 10 hr |
| Sep 5, 12:36 AM EDT | Heat Advisory | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Charles and 7 more | 18 hr |
| Sep 5, 3:24 AM EDT | Beach Hazards Statement | AKQ | Worcester | 28 hr |
| Sep 6, 3:11 AM EDT | Heat Advisory | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 16 hr |
| Sep 7, 11:45 AM EDT | Severe Thunderstorm Warning | LWX | Allegany | 29 min |
| Sep 7, 11:58 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Charles and 8 more | 3 hr |
| Sep 7, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 8 hr |
| Sep 7, 1:23 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 50 min |
| Sep 7, 1:42 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 33 min |
| Sep 7, 1:55 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 50 min |
| Sep 7, 2:09 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 51 min |
| Sep 7, 2:31 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 44 min |
| Sep 7, 3:06 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery | 84 min |
| Sep 7, 3:14 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick | 46 min |
| Sep 7, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 35 min |
| Sep 7, 4:11 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 49 min |
| Sep 7, 4:28 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 32 min |
| Sep 7, 4:48 PM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford | 87 min |
| Sep 7, 4:58 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 33 min |
| Sep 7, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 44 min |
| Sep 7, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 15 min |
| Sep 7, 6:13 PM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, City of Baltimore | 92 min |
| Sep 7, 6:49 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 26 min |
| Sep 7, 7:17 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 28 min |
| Sep 7, 7:51 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Cecil, Harford, Kent and 4 more | 84 min |
| Sep 7, 7:55 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 26 min |
| Sep 7, 7:56 PM EDT | Special Weather Statement | AKQ | Dorchester | 49 min |
| Sep 7, 8:20 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 8 hr |
| Sep 7, 8:21 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 24 min |
| Sep 7, 8:45 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 26 min |
| Sep 7, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 30 min |
| Sep 8, 4:22 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 23 min |
| Sep 8, 2:46 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 10 more | 119 min |
| Sep 8, 3:11 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more | 8 hr |
| Sep 8, 6:19 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Sep 8, 6:34 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 86 min |
| Sep 8, 6:41 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 34 min |
| Sep 8, 7:18 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 27 min |
| Sep 8, 7:27 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 48 min |
| Sep 8, 7:53 PM EDT | Special Weather Statement | CTP | Harford | 37 min |
| Sep 8, 8:00 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 30 min |
| Sep 8, 8:06 PM EDT | Flash Flood Warning | LWX | Baltimore | 83 min |
| Sep 8, 8:22 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 53 min |
| Sep 8, 8:56 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 5 hr |
| Sep 8, 9:30 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 33 min |
| Sep 8, 9:45 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 30 min |
| Sep 8, 10:25 PM EDT | Special Weather Statement | PHI | Kent | 35 min |
| Sep 8, 10:31 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Harford and 5 more | 59 min |
| Sep 8, 11:02 PM EDT | Special Weather Statement | PHI | Kent | 58 min |
| Sep 8, 11:11 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 49 min |
| Sep 8, 11:50 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 40 min |
| Sep 8, 11:54 PM EDT | Special Weather Statement | PHI | Kent | 51 min |
| Sep 9, 2:57 AM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 22 min |
| Sep 9, 6:55 AM EDT | Special Weather Statement | AKQ | Somerset | 35 min |
| Sep 9, 7:29 AM EDT | Special Weather Statement | AKQ | Somerset | 46 min |
| Sep 9, 8:02 AM EDT | Special Weather Statement | AKQ | Worcester | 43 min |
| Sep 9, 1:30 PM EDT | Special Weather Statement | AKQ | Somerset | 45 min |
| Sep 9, 2:04 PM EDT | Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Howard, Montgomery, Prince George's and 1 more | 5 hr |
| Sep 9, 2:08 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 8 more | 3 hr |
| Sep 9, 2:25 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 24 min |
| Sep 9, 2:55 PM EDT | Flash Flood Warning | LWX | Prince George's | 3 hr |
| Sep 9, 3:18 PM EDT | Flash Flood Warning | LWX | Calvert, Prince George's | 2 hr |
| Sep 9, 3:18 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 42 min |
| Sep 9, 3:41 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 32 min |
| Sep 9, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 38 min |
| Sep 9, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 43 min |
| Sep 9, 4:13 PM EDT | Special Weather Statement | PHI | Caroline | 32 min |
| Sep 9, 4:23 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 7 more | 5 hr |
| Sep 9, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 16 min |
| Sep 9, 4:39 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 36 min |
| Sep 9, 4:46 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 28 min |
| Sep 9, 5:16 PM EDT | Special Weather Statement | AKQ | Dorchester | 44 min |
| Sep 9, 6:00 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 30 min |
| Sep 9, 6:05 PM EDT | Special Weather Statement | PHI | Queen Anne's | 25 min |
| Sep 9, 6:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 8 more | 114 min |
| Sep 9, 6:17 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 43 min |
| Sep 9, 6:36 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 54 min |
| Sep 9, 6:49 PM EDT | Special Weather Statement | AKQ | Worcester | 41 min |
| Sep 9, 7:29 PM EDT | Special Weather Statement | AKQ | Worcester | 46 min |
| Sep 9, 8:08 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 8 more | 2 hr |
| Sep 10, 3:30 AM EDT | Flood Watch | LWX | Allegany | 18 hr |
| Sep 10, 4:10 AM EDT | Special Weather Statement | AKQ | Dorchester | 35 min |
| Sep 10, 10:47 AM EDT | Special Weather Statement | AKQ | Worcester | 28 min |
| Sep 11, 12:56 AM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 73 min |
| Sep 11, 7:51 PM EDT | Beach Hazards Statement | AKQ | Worcester | 24 hr |
| Sep 12, 1:30 PM EDT | Special Weather Statement | PHI | Caroline | 30 min |
| Sep 12, 1:44 PM EDT | Flood Watch | LWX | Baltimore, Carroll, Cecil, Harford | 13 hr |
| Sep 12, 2:59 PM EDT | Special Weather Statement | PHI | Talbot | 31 min |
| Sep 12, 8:02 PM EDT | Beach Hazards Statement | AKQ | Worcester | 5 days |
| Sep 12, 10:04 PM EDT | Flash Flood Warning | LWX | Montgomery | 2 hr |
| Sep 12, 10:38 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 37 min |
| Sep 12, 11:00 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 30 min |
| Sep 12, 11:07 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 2 hr |
| Sep 12, 11:35 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Sep 12, 11:40 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford, City of Baltimore | 115 min |
| Sep 12, 11:56 PM EDT | Tornado Warning | LWX | Baltimore, Harford | 34 min |
| Sep 13, 12:01 AM EDT | Special Weather Statement | PHI | Queen Anne's | 29 min |
| Sep 13, 12:02 AM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 28 min |
| Sep 13, 12:06 AM EDT | Flash Flood Warning | LWX | City of Baltimore | 88 min |
| Sep 13, 12:08 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 52 min |
| Sep 13, 12:25 AM EDT | Tornado Warning | PHI | Queen Anne's, Talbot | 35 min |
| Sep 13, 12:43 AM EDT | Mesoscale Discussion | SPC | Caroline, Cecil | 92 min |
| Sep 13, 12:44 AM EDT | Severe Thunderstorm Warning | LWX | Cecil | 31 min |
| Sep 13, 12:49 AM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 26 min |
| Sep 13, 1:06 AM EDT | Special Weather Statement | PHI | Caroline | 24 min |
| Sep 13, 1:32 AM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 98 min |
| Sep 13, 1:34 AM EDT | Areal Flood Warning | LWX | City of Baltimore | 101 min |
| Sep 13, 1:35 AM EDT | Areal Flood Warning | LWX | Baltimore, Harford, City of Baltimore | 70 min |
| Sep 13, 1:45 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's | 45 min |
| Sep 13, 1:48 AM EDT | Special Weather Statement | AKQ | Wicomico | 42 min |
| Sep 13, 1:54 AM EDT | Special Weather Statement | PHI | Caroline | 36 min |
| Sep 13, 2:30 AM EDT | Special Weather Statement | AKQ | Wicomico | 45 min |
| Sep 13, 3:09 AM EDT | Special Weather Statement | AKQ | Wicomico | 51 min |
| Sep 13, 3:30 AM EDT | Flash Flood Warning | AKQ | Wicomico | 3 hr |
| Sep 13, 3:41 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 3 hr |
| Sep 13, 3:58 AM EDT | Special Weather Statement | AKQ | Worcester | 62 min |
| Sep 14, 2:24 AM EDT | High Surf Advisory | AKQ | Worcester | 47 hr |
| Sep 16, 2:40 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 29 hr |
| Sep 16, 4:14 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 38 hr |
| Sep 17, 5:39 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 4 hr |
| Sep 20, 3:56 PM EDT | Beach Hazards Statement | AKQ | Worcester | 28 hr |
| Sep 21, 11:19 AM EDT | Tropical Storm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 57 hr |
| Sep 21, 2:46 PM EDT | Coastal Flood Watch | LWX | Anne Arundel, Calvert, Charles, Saint Mary's | 31 hr |
| Sep 21, 3:22 PM EDT | Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 60 hr |
| Sep 21, 3:57 PM EDT | Wind Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 49 hr |
| Sep 21, 4:59 PM EDT | Tropical Storm Warning | LWX | Calvert, Saint Mary's | 51 hr |
| Sep 22, 4:20 AM EDT | Wind Advisory | LWX | Anne Arundel, Baltimore, Cecil, Charles, Harford, Howard and 3 more | 39 hr |
| Sep 22, 6:29 AM EDT | Coastal Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 9 hr |
| Sep 22, 8:50 AM EDT | Coastal Flood Warning | LWX | Anne Arundel, Saint Mary's | 58 hr |
| Sep 22, 8:50 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Harford, Prince George's and 2 more | 69 hr |
| Sep 22, 3:11 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 61 hr |
| Sep 22, 3:52 PM EDT | Coastal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 58 hr |
| Sep 23, 11:28 AM EDT | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 3 hr |
| Sep 23, 2:17 PM EDT | Flood Watch | LWX | Anne Arundel, Baltimore, Charles, Howard, Montgomery, Prince George's and 1 more | 13 hr |
| Sep 23, 2:19 PM EDT | Areal Flood Advisory | AKQ | Somerset, Wicomico, Worcester | 3 hr |
| Sep 23, 5:14 PM EDT | Coastal Flood Advisory | AKQ | Somerset, Wicomico, Worcester | 35 hr |
| Sep 23, 8:09 PM EDT | Beach Hazards Statement | AKQ | Worcester | 24 hr |
| Sep 23, 8:09 PM EDT | High Surf Advisory | AKQ | Worcester | 7 hr |
| Sep 24, 10:15 AM EDT | Coastal Flood Advisory | LWX | Cecil, Charles, Harford | 17 hr |
| Sep 24, 10:15 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Saint Mary's | 4 hr |
| Sep 24, 1:19 PM EDT | Coastal Flood Advisory | AKQ | Worcester | 7 hr |
| Sep 24, 2:11 PM EDT | Coastal Flood Warning | LWX | Saint Mary's | 13 hr |
| Sep 25, 3:11 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico | 71 hr |
| Sep 25, 3:11 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 58 hr |
| Sep 25, 8:08 PM EDT | Beach Hazards Statement | AKQ | Worcester | 6 days |
| Sep 26, 2:26 AM EDT | Coastal Flood Watch | LWX | Saint Mary's | 22 hr |
| Sep 26, 2:26 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Calvert, Charles, Harford, Saint Mary's | 4 days |
| Sep 26, 3:51 AM EDT | High Surf Advisory | AKQ | Worcester | 50 hr |
| Sep 26, 9:51 PM EDT | Coastal Flood Watch | AKQ | Dorchester, Somerset, Wicomico | 6 hr |
| Sep 27, 12:50 AM EDT | Coastal Flood Warning | LWX | Saint Mary's | 53 hr |
| Sep 28, 4:04 AM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 34 hr |
| Sep 28, 2:36 PM EDT | Coastal Flood Statement | AKQ | Worcester | 7 hr |
| Sep 30, 6:38 AM EDT | Dense Fog Advisory | LWX | 2 hr | |
| Sep 30, 2:39 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 27 hr |
| Sep 30, 2:59 PM EDT | Coastal Flood Advisory | LWX | Saint Mary's | 61 min |
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 | 48 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 26 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 9 |
| Flood Watch | 5 |
| Areal Flood Advisory | 3 |
| Heat | |
| Heat Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Tropical | |
| Tropical Storm Warning | 2 |
| Coast and beach | |
| Coastal Flood Warning | 5 |
| Coastal Flood Watch | 4 |
| Coastal Flood Advisory | 21 |
| High Surf Advisory | 3 |
| Beach Hazards Statement | 6 |
| Coastal Flood Statement | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County39
- Anne Arundel County34
- Harford County32
- Montgomery County29
- City of Baltimore26
- Cecil County24
- Prince George's County24
- Worcester County24
- Saint Mary's County22
- Howard County21
- Queen Anne's County21
- Kent County20
- Carroll County19
- Frederick County19
- Wicomico County18
- Caroline County18
- Charles County17
- Somerset County17
- Dorchester County15
- Washington County14
- Calvert County14
- Talbot County14
- Allegany County9
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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. Warning verification from the Mesonet's Cow. Rebuilt daily.