Alert archive / Maryland / 2026
Weather alerts in Maryland, September 2026
97 weather alerts in September 2026, 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 2026. Tap one for its archive.
- Alerts
- 97
- Warnings
- 37
- Watches
- 9
- Advisories
- 25
- Busiest day
- September 4, 202630 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, 1:38 PM EDT | Heat Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 54 hr |
| Sep 1, 3:13 PM EDT | Mesoscale Discussion | SPC | Cecil, Harford, Kent | 2 hr |
| Sep 1, 4:32 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Harford, Kent, Queen Anne's, Talbot | 7 hr |
| Sep 1, 6:32 PM EDT | Mesoscale Discussion | SPC | Cecil, Harford | 88 min |
| Sep 1, 8:19 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 41 min |
| Sep 1, 8:59 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 61 min |
| Sep 1, 9:40 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 65 min |
| Sep 1, 9:46 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Wicomico, Worcester | 119 min |
| Sep 2, 3:53 AM EDT | Heat Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 40 hr |
| Sep 2, 11:09 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 7 more | 66 min |
| Sep 2, 11:46 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more | 5 hr |
| Sep 2, 12:00 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Harford, Washington | 45 min |
| Sep 2, 12:39 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Cecil, Harford, Howard and 1 more | 51 min |
| Sep 2, 12:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 44 min |
| Sep 2, 1:03 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 57 min |
| Sep 2, 1:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 39 min |
| Sep 2, 1:12 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Prince George's | 48 min |
| Sep 2, 1:21 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Charles, Harford, Howard and 6 more | 84 min |
| Sep 2, 1:43 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 47 min |
| Sep 2, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 40 min |
| Sep 2, 2:07 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 38 min |
| Sep 2, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 47 min |
| Sep 2, 2:42 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 48 min |
| Sep 2, 3:16 PM EDT | Special Weather Statement | AKQ | Somerset, Worcester | 44 min |
| Sep 2, 4:08 PM EDT | Heat Advisory | LWX | Calvert, Charles, Saint Mary's | 27 hr |
| Sep 3, 12:02 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 43 min |
| Sep 3, 9:49 AM EDT | Severe Thunderstorm Warning | LWX | Washington | 41 min |
| Sep 3, 3:47 PM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 8 hr |
| Sep 3, 4:16 PM EDT | Mesoscale Discussion | SPC | Allegany, Washington | 119 min |
| Sep 3, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett | 6 hr |
| Sep 3, 6:19 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 14 more | 116 min |
| Sep 3, 8:19 PM EDT | Mesoscale Discussion | SPC | Frederick, Washington | 56 min |
| Sep 3, 8:20 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 40 min |
| Sep 3, 8:28 PM EDT | Special Weather Statement | LWX | Garrett | 32 min |
| Sep 3, 8:38 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 5 hr |
| Sep 3, 8:54 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 36 min |
| Sep 3, 8:57 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 48 min |
| Sep 3, 9:17 PM EDT | Special Weather Statement | LWX | Garrett | 28 min |
| Sep 3, 9:30 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 4 hr |
| Sep 3, 9:35 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 40 min |
| Sep 3, 10:03 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 42 min |
| Sep 3, 10:08 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 52 min |
| Sep 3, 10:41 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 35 min |
| Sep 3, 11:13 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 47 min |
| Sep 3, 11:13 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 13 more | 92 min |
| Sep 3, 11:37 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 38 min |
| Sep 3, 11:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 49 min |
| Sep 3, 11:56 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Prince George's | 64 min |
| Sep 3, 11:59 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 61 min |
| Sep 4, 12:15 AM EDT | Special Weather Statement | AKQ | Dorchester, Somerset | 45 min |
| Sep 4, 12:18 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 42 min |
| Sep 4, 12:52 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 53 min |
| Sep 4, 12:58 AM EDT | Special Weather Statement | AKQ | Dorchester, Somerset, Wicomico, Worcester | 62 min |
| Sep 4, 1:59 AM EDT | Special Weather Statement | AKQ | Somerset | 46 min |
| Sep 4, 2:18 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 27 min |
| Sep 4, 12:50 PM EDT | Special Weather Statement | LWX | Garrett | 40 min |
| Sep 4, 1:02 PM EDT | Special Weather Statement | CTP | Garrett | 13 min |
| Sep 4, 1:19 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 41 min |
| Sep 4, 1:31 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 119 min |
| Sep 4, 2:04 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Calvert, Charles, Frederick, Garrett, Montgomery and 3 more | 7 hr |
| Sep 4, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 27 min |
| Sep 6, 4:51 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico, Worcester | 21 hr |
| Sep 6, 10:14 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 7 hr |
| Sep 7, 2:08 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 23 hr |
| Sep 7, 2:18 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 17 hr |
| Sep 7, 2:21 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 11 hr |
| Sep 8, 7:48 AM EDT | Coastal Flood Advisory | LWX | Harford | 52 min |
| Sep 10, 3:19 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 5 hr |
| Sep 10, 8:37 AM EDT | Coastal Flood Advisory | LWX | Harford | 92 min |
| Sep 12, 12:57 PM EDT | Flood Watch | LWX | Allegany, Garrett | 13 hr |
| Sep 12, 4:51 PM EDT | Flash Flood Warning | LWX | Garrett | 3 hr |
| Sep 12, 7:54 PM EDT | Coastal Flood Advisory | LWX | Harford | 6 hr |
| Sep 13, 12:14 AM EDT | Special Weather Statement | LWX | Garrett | 76 min |
| Sep 13, 3:51 AM EDT | Special Weather Statement | AKQ | Worcester | 39 min |
| Sep 13, 4:43 AM EDT | Flash Flood Warning | AKQ | Worcester | 3 hr |
| Sep 13, 5:03 AM EDT | Areal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 3 hr |
| Sep 13, 9:36 PM EDT | Special Weather Statement | LWX | Garrett | 39 min |
| Sep 19, 3:03 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 14 hr |
| Sep 20, 5:18 AM EDT | Coastal Flood Advisory | LWX | Harford | 102 min |
| Sep 20, 8:25 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 22 hr |
| Sep 21, 2:22 PM EDT | Coastal Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 25 hr |
| Sep 21, 6:00 PM EDT | Beach Hazards Statement | AKQ | Worcester | 6 days |
| Sep 22, 2:10 AM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 38 hr |
| Sep 22, 2:10 AM EDT | High Surf Advisory | AKQ | Worcester | 5 days |
| Sep 22, 7:50 AM EDT | Coastal Flood Watch | LWX | Anne Arundel, Saint Mary's | 31 hr |
| Sep 22, 7:50 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Calvert, Charles, Saint Mary's | 6 days |
| Sep 22, 2:57 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 5 days |
| Sep 22, 3:01 PM EDT | Wind Advisory | AKQ | Worcester | 53 hr |
| Sep 22, 4:14 PM EDT | Coastal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 5 days |
| Sep 23, 8:42 AM EDT | Coastal Flood Warning | LWX | Anne Arundel, Saint Mary's | 42 hr |
| Sep 24, 11:53 AM EDT | Frost Advisory | LWX | Garrett | 21 hr |
| Sep 25, 2:59 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 14 hr |
| Sep 25, 7:47 AM EDT | Wind Advisory | AKQ | Worcester | 27 hr |
| Sep 26, 2:50 PM EDT | Coastal Flood Watch | LWX | Anne Arundel | 32 hr |
| Sep 26, 2:50 PM EDT | Coastal Flood Warning | LWX | Saint Mary's | 8 hr |
| Sep 26, 2:50 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 20 hr |
| Sep 26, 7:26 PM EDT | Coastal Flood Advisory | AKQ | Worcester | 23 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 | 32 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 11 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 1 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 2 |
| Coast and beach | |
| Coastal Flood Warning | 3 |
| Coastal Flood Watch | 3 |
| Coastal Flood Advisory | 17 |
| High Surf Advisory | 1 |
| Beach Hazards Statement | 1 |
| Coastal Flood Statement | 3 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Anne Arundel County22
- Somerset County18
- Worcester County18
- Garrett County17
- Dorchester County16
- Harford County16
- Queen Anne's County16
- Wicomico County15
- Caroline County15
- Talbot County15
- Kent County14
- Prince George's County12
- Baltimore County11
- Howard County11
- Montgomery County11
- Washington County11
- Cecil County10
- Frederick County10
- Saint Mary's County10
- Carroll County9
- Allegany County9
- Calvert County9
- Charles County9
- City of Baltimore7
Nearby
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.