Alert archive / Maryland / 2024
Weather alerts in Maryland, August 2024
167 weather alerts in August 2024, 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 2024. Tap one for its archive.
- Alerts
- 167
- Warnings
- 97
- Watches
- 22
- Advisories
- 19
- Busiest day
- August 9, 202438 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 1, 12:01 PM EDT | Heat Advisory | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 32 hr |
| Aug 1, 2:29 PM EDT | Excessive Heat Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 30 hr |
| Aug 1, 2:29 PM EDT | Heat Advisory | AKQ | Worcester | 30 hr |
| Aug 1, 2:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 10 more | 2 hr |
| Aug 1, 3:15 PM EDT | Special Weather Statement | AKQ | Worcester | 45 min |
| Aug 1, 3:21 PM EDT | Areal Flood Advisory | AKQ | Worcester | 8 min |
| Aug 1, 3:29 PM EDT | Flash Flood Warning | AKQ | Worcester | 98 min |
| Aug 1, 3:54 PM EDT | Areal Flood Advisory | AKQ | Worcester | 74 min |
| Aug 2, 4:17 AM EDT | Excessive Heat Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 16 hr |
| Aug 2, 4:34 AM EDT | Excessive Heat Warning | LWX | Anne Arundel, Baltimore, Calvert, Cecil, Charles, Harford and 3 more | 15 hr |
| Aug 2, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 46 min |
| Aug 2, 3:45 PM EDT | Mesoscale Discussion | SPC | Cecil, Harford | 60 min |
| Aug 2, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 65 min |
| Aug 2, 4:07 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Harford, Kent, Queen Anne's, Talbot | 4 hr |
| Aug 2, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 27 min |
| Aug 2, 4:51 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 69 min |
| Aug 2, 6:06 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 39 min |
| Aug 2, 7:01 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 59 min |
| Aug 2, 7:26 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford, Howard, City of Baltimore | 49 min |
| Aug 2, 9:36 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 3 hr |
| Aug 3, 3:38 AM EDT | Flood Watch | LWX | Anne Arundel, Baltimore, Carroll, Cecil, Harford, Howard and 3 more | 17 hr |
| Aug 3, 12:56 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 94 min |
| Aug 3, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 8 hr |
| Aug 3, 1:47 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 23 min |
| Aug 3, 2:53 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Harford, Washington | 67 min |
| Aug 3, 3:11 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 31 min |
| Aug 3, 3:51 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick | 39 min |
| Aug 3, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, Howard, City of Baltimore | 48 min |
| Aug 3, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 25 min |
| Aug 3, 5:22 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Cecil, Harford | 53 min |
| Aug 3, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 51 min |
| Aug 3, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 32 min |
| Aug 3, 6:09 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 36 min |
| Aug 3, 6:13 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 32 min |
| Aug 3, 6:36 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 28 min |
| Aug 3, 6:57 PM EDT | Special Weather Statement | AKQ | Dorchester | 48 min |
| Aug 3, 7:01 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 33 min |
| Aug 3, 7:14 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 61 min |
| Aug 3, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 60 min |
| Aug 3, 7:21 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 39 min |
| Aug 3, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 40 min |
| Aug 6, 1:06 PM EDT | Mesoscale Discussion | SPC | Cecil | 84 min |
| Aug 6, 1:46 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 29 min |
| Aug 6, 2:06 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 24 min |
| Aug 6, 2:29 PM EDT | Flash Flood Warning | LWX | Baltimore | 110 min |
| Aug 6, 2:31 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 32 min |
| Aug 6, 3:22 PM EDT | Flood Watch | LWX | Baltimore, Cecil, Harford, City of Baltimore | 11 hr |
| Aug 6, 6:31 PM EDT | Mesoscale Discussion | SPC | Carroll, Cecil, Frederick, Harford, Washington | 89 min |
| Aug 6, 11:00 PM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
| Aug 7, 12:05 AM EDT | Areal Flood Warning | LWX | Baltimore, Carroll, Harford | 3 hr |
| Aug 7, 12:32 PM EDT | Coastal Flood Watch | LWX | Anne Arundel | 27 hr |
| Aug 7, 2:18 PM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 67 hr |
| Aug 7, 2:43 PM EDT | Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 6 more | 45 hr |
| Aug 7, 3:14 PM EDT | Beach Hazards Statement | AKQ | Worcester | 53 hr |
| Aug 7, 4:08 PM EDT | Flash Flood Warning | PHI | Caroline | 3 hr |
| Aug 7, 5:59 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 115 min |
| Aug 7, 7:04 PM EDT | Flash Flood Warning | LWX | Frederick | 72 min |
| Aug 8, 3:36 AM EDT | High Surf Advisory | AKQ | Worcester | 39 hr |
| Aug 8, 4:08 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Charles, City of Baltimore | 41 hr |
| Aug 8, 11:40 AM EDT | Coastal Flood Watch | AKQ | Dorchester | 4 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Washington | 25 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Frederick | 44 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Washington | 31 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Frederick | 40 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Washington | 31 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Montgomery | 31 hr |
| Aug 8, 11:49 AM EDT | River Flood Watch | LWX | Montgomery | 31 hr |
| Aug 8, 2:20 PM EDT | Coastal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 40 hr |
| Aug 8, 3:13 PM EDT | Wind Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 27 hr |
| Aug 8, 3:24 PM EDT | Coastal Flood Warning | LWX | Anne Arundel, Baltimore, Harford, City of Baltimore | 31 hr |
| Aug 8, 3:24 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Cecil, Harford, Prince George's and 2 more | 35 hr |
| Aug 8, 3:30 PM EDT | Coastal Flood Warning | AKQ | Dorchester | 30 hr |
| Aug 8, 5:45 PM EDT | Tornado Warning | LWX | Montgomery | 15 min |
| Aug 8, 6:37 PM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 12 hr |
| Aug 8, 8:38 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Charles, Frederick, Harford and 6 more | 2 hr |
| Aug 8, 11:04 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 3 more | 116 min |
| Aug 8, 11:53 PM EDT | Flash Flood Warning | LWX | Allegany, Washington | 3 hr |
| Aug 9, 1:50 AM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Frederick, Howard | 3 hr |
| Aug 9, 2:49 AM EDT | Areal Flood Warning | LWX | Allegany, Washington | 28 hr |
| Aug 9, 3:52 AM EDT | Flash Flood Warning | LWX | Baltimore, Carroll | 8 hr |
| Aug 9, 4:36 AM EDT | Areal Flood Warning | LWX | Baltimore, Carroll, Frederick, Howard | 4 hr |
| Aug 9, 4:38 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 11 more | 3 hr |
| Aug 9, 4:39 AM EDT | Tornado Warning | LWX | Charles | 17 min |
| Aug 9, 5:17 AM EDT | Flash Flood Warning | LWX | Allegany | 2 hr |
| Aug 9, 5:45 AM EDT | Tornado Warning | LWX | Charles | 30 min |
| Aug 9, 6:13 AM EDT | Tornado Warning | LWX | Charles | 17 min |
| Aug 9, 6:17 AM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 8 hr |
| Aug 9, 6:37 AM EDT | Flash Flood Warning | LWX | Montgomery | 2 hr |
| Aug 9, 7:00 AM EDT | Flash Flood Warning | LWX | Montgomery | 4 hr |
| Aug 9, 7:40 AM EDT | Tornado Warning | LWX | Carroll, Howard, Montgomery | 20 min |
| Aug 9, 7:46 AM EDT | Areal Flood Warning | LWX | Allegany | 7 hr |
| Aug 9, 7:48 AM EDT | Tornado Warning | LWX | Charles, Prince George's | 27 min |
| Aug 9, 8:00 AM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 9, 8:04 AM EDT | Tornado Warning | LWX | Carroll | 26 min |
| Aug 9, 8:23 AM EDT | Tornado Warning | LWX | Prince George's | 11 min |
| Aug 9, 8:27 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 3 hr |
| Aug 9, 8:48 AM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Frederick, Howard | 95 min |
| Aug 9, 8:57 AM EDT | Tornado Warning | LWX | Carroll | 18 min |
| Aug 9, 9:04 AM EDT | Areal Flood Warning | LWX | Montgomery | 4 hr |
| Aug 9, 9:19 AM EDT | Coastal Flood Warning | PHI | Kent | 10 hr |
| Aug 9, 10:20 AM EDT | Areal Flood Warning | LWX | Carroll, Frederick | 6 hr |
| Aug 9, 10:23 AM EDT | Areal Flood Warning | LWX | Baltimore, Carroll, Frederick, Howard | 3 hr |
| Aug 9, 10:26 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Dorchester and 8 more | 94 min |
| Aug 9, 10:33 AM EDT | Areal Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 9, 10:34 AM EDT | Areal Flood Warning | LWX | Montgomery | 3 hr |
| Aug 9, 11:05 AM EDT | Coastal Flood Advisory | LWX | Harford | 16 hr |
| Aug 9, 11:13 AM EDT | Areal Flood Warning | LWX | Howard, Montgomery | 5 hr |
| Aug 9, 12:19 PM EDT | River Flood Warning | LWX | Washington | 18 hr |
| Aug 9, 4:50 PM EDT | Areal Flood Warning | LWX | Baltimore, Howard | 8 hr |
| Aug 9, 6:20 PM EDT | River Flood Warning | LWX | Washington | 9 hr |
| Aug 9, 6:22 PM EDT | River Flood Warning | LWX | Montgomery | 22 hr |
| Aug 9, 6:26 PM EDT | River Flood Watch | LWX | Cecil | 22 hr |
| Aug 16, 3:07 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 15 hr |
| Aug 16, 4:00 PM EDT | Beach Hazards Statement | AKQ | Worcester | 3 days |
| Aug 17, 4:15 AM EDT | Coastal Flood Advisory | AKQ | Dorchester | 26 hr |
| Aug 17, 6:14 AM EDT | Coastal Flood Advisory | LWX | Harford | 5 hr |
| Aug 17, 1:44 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Harford, City of Baltimore | 22 hr |
| Aug 17, 3:53 PM EDT | Coastal Flood Statement | AKQ | Somerset, Wicomico | 13 hr |
| Aug 17, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 33 min |
| Aug 17, 5:37 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Aug 17, 5:53 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 10 min |
| Aug 18, 3:07 AM EDT | Flood Watch | LWX | Anne Arundel, Baltimore, Carroll, Cecil, Harford, Howard and 3 more | 20 hr |
| Aug 18, 6:03 AM EDT | Coastal Flood Statement | AKQ | Dorchester, Somerset, Wicomico | 25 hr |
| Aug 18, 1:09 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 96 min |
| Aug 18, 2:02 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 8 hr |
| Aug 18, 2:49 PM EDT | Special Weather Statement | AKQ | Wicomico | 26 min |
| Aug 18, 2:54 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico | 36 min |
| Aug 18, 4:30 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 90 min |
| Aug 18, 6:44 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 31 min |
| Aug 18, 6:56 PM EDT | Special Weather Statement | AKQ | Dorchester | 64 min |
| Aug 18, 7:02 PM EDT | Special Weather Statement | AKQ | Wicomico | 58 min |
| Aug 18, 7:03 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 27 min |
| Aug 18, 7:25 PM EDT | Flash Flood Warning | LWX | Baltimore | 3 hr |
| Aug 18, 7:40 PM EDT | Special Weather Statement | AKQ | Wicomico, Worcester | 80 min |
| Aug 18, 7:58 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 47 min |
| Aug 18, 8:12 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 3 hr |
| Aug 18, 9:36 PM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 83 min |
| Aug 18, 9:48 PM EDT | Flash Flood Warning | LWX | Baltimore, Howard, City of Baltimore | 88 min |
| Aug 18, 11:13 PM EDT | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 3 hr |
| Aug 19, 2:25 PM EDT | Mesoscale Discussion | SPC | Cecil | 2 hr |
| Aug 19, 3:24 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Harford and 8 more | 2 hr |
| Aug 19, 5:58 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Worcester | 62 min |
| Aug 26, 2:29 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 46 min |
| Aug 26, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 51 min |
| Aug 27, 3:59 AM EDT | Heat Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 40 hr |
| Aug 27, 2:36 PM EDT | Heat Advisory | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 28 hr |
| Aug 28, 2:53 AM EDT | Heat Advisory | AKQ | Dorchester, Somerset, Wicomico, Worcester | 41 hr |
| Aug 28, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 26 min |
| Aug 29, 10:59 AM EDT | Flood Watch | LWX | Allegany, Frederick, Montgomery, Washington | 12 hr |
| Aug 29, 1:20 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 115 min |
| Aug 29, 3:54 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Charles, Frederick, Garrett, Howard and 3 more | 7 hr |
| Aug 29, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 38 min |
| Aug 29, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 47 min |
| Aug 29, 5:40 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 7 more | 95 min |
| Aug 29, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 49 min |
| Aug 29, 6:12 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 33 min |
| Aug 29, 6:26 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 33 min |
| Aug 29, 6:48 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 42 min |
| Aug 29, 6:57 PM EDT | Flash Flood Warning | LWX | Allegany | 3 hr |
| Aug 29, 9:10 PM EDT | Flash Flood Warning | LWX | Allegany, Washington | 116 min |
| Aug 30, 1:40 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel | 44 hr |
| Aug 31, 12:39 PM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Aug 31, 1:27 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett, Washington | 6 hr |
| Aug 31, 3:28 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| Aug 31, 3:41 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 34 min |
| Aug 31, 4:01 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 44 min |
| Aug 31, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 38 min |
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.
- Baltimore County47
- Montgomery County43
- Harford County40
- Howard County35
- Cecil County34
- Frederick County33
- Carroll County32
- Washington County32
- City of Baltimore31
- Anne Arundel County30
- Prince George's County27
- Charles County23
- Talbot County19
- Allegany County19
- Worcester County18
- Kent County18
- Queen Anne's County18
- Caroline County17
- Calvert County16
- Dorchester County16
- Wicomico County16
- Saint Mary's County13
- Somerset County12
- Garrett County7
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.