Alert archive / Maryland / 2026
Weather alerts in Maryland, August 2026
161 weather alerts in August 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 August 2026. Tap one for its archive.
- Alerts
- 161
- Warnings
- 95
- Watches
- 13
- Advisories
- 9
- Busiest day
- August 10, 202647 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 2, 2:16 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 8 hr |
| Aug 2, 2:43 AM EDT | Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Garrett, Howard, Montgomery and 2 more | 21 hr |
| Aug 2, 4:34 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Aug 2, 6:12 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 16 hr |
| Aug 2, 8:05 PM EDT | Beach Hazards Statement | AKQ | Worcester | 24 hr |
| Aug 4, 4:09 PM EDT | Flood Watch | LWX | Anne Arundel, Baltimore, Charles, Harford, Montgomery, Prince George's and 1 more | 23 hr |
| Aug 5, 11:55 AM EDT | Flash Flood Warning | LWX | Baltimore | 105 min |
| Aug 6, 1:39 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Charles and 8 more | 2 hr |
| Aug 6, 2:46 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 44 min |
| Aug 6, 6:28 PM EDT | Flash Flood Warning | LWX | Baltimore | 2 hr |
| Aug 6, 7:08 PM EDT | Special Weather Statement | LWX | Prince George's | 37 min |
| Aug 7, 12:50 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more | 2 hr |
| Aug 7, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 9 more | 7 hr |
| Aug 7, 3:07 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 23 min |
| Aug 7, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 46 min |
| Aug 7, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 41 min |
| Aug 7, 4:43 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 3 hr |
| Aug 7, 4:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 15 min |
| Aug 7, 5:19 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 29 min |
| Aug 7, 5:22 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 3 hr |
| Aug 7, 5:58 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 27 min |
| Aug 7, 6:18 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 42 min |
| Aug 7, 6:23 PM EDT | Flash Flood Warning | LWX | Montgomery | 46 min |
| Aug 7, 6:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 32 min |
| Aug 8, 11:55 AM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 2 more | 95 min |
| Aug 8, 1:12 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Kent, Queen Anne's, Talbot | 5 hr |
| Aug 8, 1:18 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 57 min |
| Aug 8, 1:30 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 45 min |
| Aug 8, 1:44 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 46 min |
| Aug 8, 3:08 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Montgomery, Prince George's, Saint Mary's and 2 more | 97 min |
| Aug 8, 4:27 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 63 min |
| Aug 9, 2:32 AM EDT | Special Weather Statement | LWX | Garrett | 28 min |
| Aug 9, 3:08 AM EDT | Special Weather Statement | LWX | Garrett | 52 min |
| Aug 10, 9:29 AM EDT | Mesoscale Discussion | SPC | Cecil | 91 min |
| Aug 10, 12:30 PM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Aug 10, 12:59 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 2 hr |
| Aug 10, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 10 more | 7 hr |
| Aug 10, 1:14 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 61 min |
| Aug 10, 1:48 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 57 min |
| Aug 10, 1:49 PM EDT | Tornado Warning | LWX | Allegany, Garrett | 26 min |
| Aug 10, 1:57 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 48 min |
| Aug 10, 2:10 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Aug 10, 2:25 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 35 min |
| Aug 10, 2:29 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 31 min |
| Aug 10, 2:43 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 50 min |
| Aug 10, 2:46 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 44 min |
| Aug 10, 2:50 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 25 min |
| Aug 10, 2:56 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 38 min |
| Aug 10, 3:10 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 65 min |
| Aug 10, 3:12 PM EDT | Flash Flood Warning | LWX | Frederick, Washington | 3 hr |
| Aug 10, 3:12 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 48 min |
| Aug 10, 3:15 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 60 min |
| Aug 10, 3:21 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 39 min |
| Aug 10, 3:27 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 18 min |
| Aug 10, 3:39 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 1 more | 2 hr |
| Aug 10, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Harford, Howard, Montgomery and 1 more | 50 min |
| Aug 10, 3:57 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 48 min |
| Aug 10, 4:03 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 57 min |
| Aug 10, 4:10 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 35 min |
| Aug 10, 4:14 PM EDT | Tornado Warning | LWX | Baltimore, Carroll, Howard, City of Baltimore | 18 min |
| Aug 10, 4:18 PM EDT | Tornado Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 13 min |
| Aug 10, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 5 hr |
| Aug 10, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 42 min |
| Aug 10, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 66 min |
| Aug 10, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Calvert, Howard, Prince George's, City of Baltimore | 31 min |
| Aug 10, 5:05 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 25 min |
| Aug 10, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 24 min |
| Aug 10, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 46 min |
| Aug 10, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 45 min |
| Aug 10, 5:33 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 27 min |
| Aug 10, 5:36 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 24 min |
| Aug 10, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 39 min |
| Aug 10, 5:40 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford, City of Baltimore | 88 min |
| Aug 10, 5:45 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 45 min |
| Aug 10, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 64 min |
| Aug 10, 6:07 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 38 min |
| Aug 10, 6:26 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 64 min |
| Aug 10, 6:28 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Saint Mary's, Somerset, Talbot and 2 more | 92 min |
| Aug 10, 6:51 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 24 min |
| Aug 10, 7:26 PM EDT | Special Weather Statement | AKQ | Somerset, Wicomico, Worcester | 49 min |
| Aug 10, 11:06 PM EDT | Special Weather Statement | LWX | Garrett | 24 min |
| Aug 10, 11:25 PM EDT | Special Weather Statement | LWX | Garrett | 35 min |
| Aug 10, 11:56 PM EDT | Special Weather Statement | LWX | Garrett | 49 min |
| Aug 11, 12:47 AM EDT | Special Weather Statement | LWX | Garrett | 28 min |
| Aug 11, 1:09 AM EDT | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 36 min |
| Aug 11, 1:10 AM EDT | Special Weather Statement | LWX | Garrett | 35 min |
| Aug 11, 1:21 AM EDT | Flash Flood Warning | LWX | Garrett | 4 hr |
| Aug 11, 1:42 AM EDT | Special Weather Statement | LWX | Garrett | 33 min |
| Aug 11, 2:06 AM EDT | Flood Watch | LWX | Garrett | 16 hr |
| Aug 11, 2:13 AM EDT | Special Weather Statement | LWX | Garrett | 32 min |
| Aug 11, 5:35 AM EDT | Areal Flood Warning | LWX | Garrett | 8 hr |
| Aug 14, 1:14 PM EDT | Special Weather Statement | AKQ | Wicomico | 46 min |
| Aug 14, 1:37 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico, Worcester | 38 min |
| Aug 15, 1:48 AM EDT | Dense Fog Advisory | LWX | Allegany, Garrett, Washington | 8 hr |
| Aug 15, 12:52 PM EDT | Flood Watch | LWX | Allegany, Charles, Garrett, Montgomery, Prince George's | 35 hr |
| Aug 16, 3:28 PM EDT | Mesoscale Discussion | SPC | Allegany, Washington | 2 hr |
| Aug 16, 3:34 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 8 hr |
| Aug 16, 4:10 PM EDT | Special Weather Statement | LWX | Garrett | 80 min |
| Aug 16, 4:35 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 40 min |
| Aug 16, 4:36 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Charles, Frederick, Garrett, Howard and 3 more | 6 hr |
| Aug 16, 4:56 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 34 min |
| Aug 16, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Garrett | 32 min |
| Aug 16, 5:48 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 42 min |
| Aug 16, 7:00 PM EDT | Mesoscale Discussion | SPC | Calvert, Carroll, Charles, Frederick, Howard, Montgomery and 3 more | 60 min |
| Aug 16, 8:59 PM EDT | Tornado Warning | LWX | Charles, Prince George's | 16 min |
| Aug 16, 9:07 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 23 min |
| Aug 16, 9:17 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 13 min |
| Aug 16, 9:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 46 min |
| Aug 17, 12:07 AM EDT | Coastal Flood Advisory | LWX | Harford | 3 hr |
| Aug 17, 5:55 PM EDT | Special Weather Statement | PHI | Kent | 50 min |
| Aug 17, 7:58 PM EDT | Special Weather Statement | AKQ | Dorchester | 47 min |
| Aug 17, 9:03 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 42 min |
| Aug 17, 9:49 PM EDT | Special Weather Statement | AKQ | Somerset | 41 min |
| Aug 20, 1:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 2 hr |
| Aug 20, 2:31 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 7 hr |
| Aug 20, 2:43 PM EDT | Tornado Warning | PHI | Kent, Queen Anne's | 32 min |
| Aug 20, 2:46 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 29 min |
| Aug 20, 2:57 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 33 min |
| Aug 20, 2:58 PM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 7 hr |
| Aug 20, 4:26 PM EDT | Mesoscale Discussion | SPC | Cecil, Harford, Kent | 2 hr |
| Aug 20, 5:05 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 40 min |
| Aug 20, 5:30 PM EDT | Tornado Warning | PHI | Kent, Queen Anne's | 30 min |
| Aug 20, 5:39 PM EDT | Tornado Warning | PHI | Queen Anne's | 36 min |
| Aug 20, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 50 min |
| Aug 20, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 39 min |
| Aug 20, 6:35 PM EDT | Special Weather Statement | AKQ | Dorchester | 55 min |
| Aug 20, 6:41 PM EDT | Tornado Warning | AKQ | Dorchester | 34 min |
| Aug 20, 6:42 PM EDT | Mesoscale Discussion | SPC | Caroline, Dorchester, Saint Mary's, Talbot, Wicomico | 93 min |
| Aug 20, 6:53 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's | 105 min |
| Aug 20, 6:55 PM EDT | Tornado Warning | LWX | Saint Mary's | 22 min |
| Aug 20, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 48 min |
| Aug 20, 7:02 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 43 min |
| Aug 20, 7:08 PM EDT | Tornado Warning | LWX | Saint Mary's | 16 min |
| Aug 20, 7:36 PM EDT | Special Weather Statement | AKQ | Dorchester | 39 min |
| Aug 20, 7:46 PM EDT | Special Weather Statement | AKQ | Wicomico | 44 min |
| Aug 20, 8:23 PM EDT | Tornado Warning | AKQ | Wicomico, Worcester | 27 min |
| Aug 20, 8:56 PM EDT | Flash Flood Warning | AKQ | Somerset, Wicomico, Worcester | 115 min |
| Aug 21, 1:51 AM EDT | Dense Fog Advisory | LWX | Allegany, Garrett | 6 hr |
| Aug 22, 11:38 AM EDT | Mesoscale Discussion | SPC | Garrett | 3 hr |
| Aug 22, 1:56 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 16 hr |
| Aug 22, 2:27 PM EDT | Mesoscale Discussion | SPC | Allegany | 2 hr |
| Aug 22, 7:00 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 90 min |
| Aug 22, 8:57 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 33 min |
| Aug 22, 11:35 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 25 min |
| Aug 23, 12:18 AM EDT | Special Weather Statement | AKQ | Dorchester, Somerset | 42 min |
| Aug 27, 1:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more | 113 min |
| Aug 27, 3:17 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 7 hr |
| Aug 27, 4:11 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 34 min |
| Aug 27, 4:45 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 45 min |
| Aug 27, 5:17 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 28 min |
| Aug 27, 5:40 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 50 min |
| Aug 27, 6:20 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 40 min |
| Aug 27, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 49 min |
| Aug 27, 7:26 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Harford, Howard, Montgomery and 1 more | 94 min |
| Aug 27, 8:47 PM EDT | Special Weather Statement | LWX | Garrett | 43 min |
| Aug 27, 9:36 PM EDT | Special Weather Statement | LWX | Garrett | 39 min |
| Aug 28, 11:20 AM EDT | Special Weather Statement | AKQ | Wicomico | 40 min |
| Aug 28, 12:26 PM EDT | Areal Flood Advisory | AKQ | Wicomico | 2 min |
| Aug 28, 12:28 PM EDT | Flash Flood Warning | AKQ | Somerset, Wicomico | 98 min |
| Aug 31, 4:46 PM EDT | Areal Flood Advisory | AKQ | Somerset, Wicomico, Worcester | 100 min |
| Aug 31, 5:35 PM EDT | Special Weather Statement | AKQ | Wicomico | 40 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 | 71 |
| Tornado Warning | 11 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 19 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 12 |
| Flood Watch | 4 |
| Areal Flood Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Coast and beach | |
| Coastal Flood Advisory | 5 |
| Beach Hazards Statement | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Garrett County30
- Montgomery County29
- Baltimore County28
- Prince George's County27
- Frederick County26
- Washington County25
- Harford County24
- Howard County23
- City of Baltimore23
- Kent County23
- Charles County22
- Anne Arundel County21
- Carroll County21
- Queen Anne's County21
- Wicomico County19
- Allegany County18
- Saint Mary's County18
- Caroline County17
- Calvert County16
- Cecil County15
- Talbot County15
- Dorchester County15
- Somerset County11
- Worcester County10
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.