Alert archive / Maryland / 2010
Weather alerts in Maryland, September 2010
128 weather alerts in September 2010, 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 2010. Tap one for its archive.
- Alerts
- 128
- Warnings
- 53
- Watches
- 14
- Advisories
- 13
- Busiest day
- September 30, 201043 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, 3:28 PM EDT | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 24 hr |
| Sep 1, 5:13 PM EDT | Tropical Storm Warning | AKQ | Worcester | 48 hr |
| Sep 2, 3:14 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 24 hr |
| Sep 3, 5:22 PM EDT | Coastal Flood Statement | AKQ | Worcester | 27 hr |
| Sep 4, 4:19 AM EDT | Red Flag Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 13 hr |
| Sep 7, 4:27 AM EDT | Fire Weather Watch | PHI | Cecil, Kent, Queen Anne's | 11 hr |
| Sep 7, 2:39 PM EDT | Fire Weather Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more | 19 hr |
| Sep 7, 3:42 PM EDT | Red Flag Warning | PHI | Cecil, Kent, Queen Anne's | 27 hr |
| Sep 7, 9:44 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 13 hr |
| Sep 8, 9:42 AM EDT | Red Flag Warning | LWX | Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Prince George's and 2 more | 9 hr |
| Sep 13, 5:36 AM EDT | Dense Fog Advisory | LWX | Frederick, Washington | 3 hr |
| Sep 14, 11:00 AM EDT | Red Flag Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 7 hr |
| Sep 16, 4:16 PM EDT | Special Weather Statement | PHI | Cecil | 44 min |
| Sep 16, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 43 min |
| Sep 16, 4:36 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 54 min |
| Sep 16, 8:45 PM EDT | Special Weather Statement | PBZ | Garrett | 60 min |
| Sep 16, 9:17 PM EDT | Special Weather Statement | PBZ | Garrett | 58 min |
| Sep 16, 9:46 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 28 min |
| Sep 16, 10:06 PM EDT | Special Weather Statement | LWX | Allegany | 24 min |
| Sep 16, 10:41 PM EDT | Special Weather Statement | LWX | Washington | 49 min |
| Sep 16, 10:54 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Frederick, Washington | 51 min |
| Sep 16, 11:51 PM EDT | Special Weather Statement | LWX | Carroll, Frederick | 24 min |
| Sep 18, 8:43 AM EDT | Coastal Flood Statement | AKQ | Worcester | 3 days |
| Sep 22, 10:54 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 10 hr |
| Sep 22, 2:31 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 4 more | 59 min |
| Sep 22, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 6 hr |
| Sep 22, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 7 hr |
| Sep 22, 2:49 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Sep 22, 3:10 PM EDT | Mesoscale Discussion | SPC | Cecil | 65 min |
| Sep 22, 3:43 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 7 hr |
| Sep 22, 4:37 PM EDT | Special Weather Statement | LWX | Baltimore | 38 min |
| Sep 22, 4:46 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Garrett, Harford and 1 more | 59 min |
| Sep 22, 4:48 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 42 min |
| Sep 22, 5:27 PM EDT | Special Weather Statement | PHI | Cecil | 48 min |
| Sep 22, 7:03 PM EDT | Special Weather Statement | LWX | Frederick | 27 min |
| Sep 22, 7:14 PM EDT | Mesoscale Discussion | SPC | Carroll, Cecil, Harford, Washington | 61 min |
| Sep 22, 7:29 PM EDT | Special Weather Statement | LWX | Carroll | 31 min |
| Sep 22, 7:31 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 44 min |
| Sep 22, 7:53 PM EDT | Special Weather Statement | LWX | Baltimore | 52 min |
| Sep 22, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 48 min |
| Sep 22, 8:02 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 43 min |
| Sep 22, 8:39 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 26 min |
| Sep 22, 8:43 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 35 min |
| Sep 22, 8:43 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 47 min |
| Sep 22, 9:03 PM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's | 57 min |
| Sep 22, 9:10 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 65 min |
| Sep 22, 10:49 PM EDT | Special Weather Statement | PHI | Caroline | 56 min |
| Sep 24, 7:30 AM EDT | Dense Fog Advisory | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Prince George's, City of Baltimore | 114 min |
| Sep 27, 3:43 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 4 more | 28 hr |
| Sep 27, 10:41 AM EDT | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Saint Mary's, City of Baltimore | 16 hr |
| Sep 27, 10:41 AM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 39 hr |
| Sep 27, 12:03 PM EDT | Special Weather Statement | LWX | Howard | 42 min |
| Sep 27, 12:07 PM EDT | Special Weather Statement | LWX | Carroll | 38 min |
| Sep 27, 12:12 PM EDT | Tornado Warning | LWX | Howard | 33 min |
| Sep 27, 12:17 PM EDT | Special Weather Statement | LWX | Montgomery | 58 min |
| Sep 27, 12:34 PM EDT | Special Weather Statement | LWX | Carroll | 41 min |
| Sep 27, 12:37 PM EDT | Special Weather Statement | LWX | Montgomery | 38 min |
| Sep 27, 12:38 PM EDT | Tornado Warning | LWX | Baltimore, Carroll | 26 min |
| Sep 27, 1:03 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 6 more | 87 min |
| Sep 27, 1:12 PM EDT | Special Weather Statement | LWX | Howard | 48 min |
| Sep 27, 1:21 PM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 3 hr |
| Sep 27, 1:38 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Howard | 3 hr |
| Sep 27, 3:48 PM EDT | Special Weather Statement | AKQ | Dorchester | 42 min |
| Sep 27, 6:14 PM EDT | Coastal Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 16 hr |
| Sep 28, 6:13 AM EDT | Special Weather Statement | PHI | Cecil, Kent, Queen Anne's, Talbot | 47 min |
| Sep 28, 6:44 AM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 46 min |
| Sep 28, 7:02 AM EDT | Special Weather Statement | PHI | Caroline | 58 min |
| Sep 28, 8:00 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Dorchester and 9 more | 2 hr |
| Sep 28, 8:26 AM EDT | Special Weather Statement | PHI | Queen Anne's, Talbot | 64 min |
| Sep 28, 8:47 AM EDT | Special Weather Statement | PHI | Cecil, Kent | 58 min |
| Sep 28, 9:13 AM EDT | Tornado Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 32 min |
| Sep 28, 9:26 AM EDT | Special Weather Statement | PHI | Cecil | 64 min |
| Sep 28, 9:44 AM EDT | Tornado Warning | PHI | Cecil, Kent, Queen Anne's, Talbot | 31 min |
| Sep 28, 10:22 AM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 53 min |
| Sep 28, 10:41 AM EDT | Special Weather Statement | PHI | Caroline | 64 min |
| Sep 28, 2:02 PM EDT | Special Weather Statement | AKQ | Worcester | 58 min |
| Sep 29, 2:21 AM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more | 50 hr |
| Sep 29, 2:41 AM EDT | Coastal Flood Watch | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 18 hr |
| Sep 29, 3:52 AM EDT | Flood Watch | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 49 hr |
| Sep 29, 4:41 AM EDT | Flash Flood Watch | AKQ | Dorchester, Somerset, Wicomico, Worcester | 47 hr |
| Sep 29, 2:45 PM EDT | Wind Advisory | LWX | Anne Arundel, Calvert, Saint Mary's | 23 hr |
| Sep 29, 3:19 PM EDT | Coastal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 30 hr |
| Sep 29, 3:24 PM EDT | Wind Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 38 hr |
| Sep 29, 4:00 PM EDT | Wind Advisory | AKQ | Worcester | 28 hr |
| Sep 29, 4:07 PM EDT | High Surf Advisory | AKQ | Worcester | 38 hr |
| Sep 29, 8:48 PM EDT | Coastal Flood Advisory | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 25 hr |
| Sep 30, 3:57 AM EDT | Tornado Warning | LWX | Anne Arundel, Calvert, Saint Mary's | 33 min |
| Sep 30, 4:02 AM EDT | Mesoscale Discussion | SPC | Caroline, Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 118 min |
| Sep 30, 4:55 AM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 8 hr |
| Sep 30, 4:57 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's | 6 hr |
| Sep 30, 6:06 AM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
| Sep 30, 6:08 AM EDT | Special Weather Statement | LWX | Saint Mary's | 52 min |
| Sep 30, 6:17 AM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 28 min |
| Sep 30, 6:39 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more | 6 hr |
| Sep 30, 7:06 AM EDT | Coastal Flood Advisory | AKQ | Dorchester, Somerset, Wicomico | 29 hr |
| Sep 30, 7:32 AM EDT | Special Weather Statement | LWX | Saint Mary's | 43 min |
| Sep 30, 8:00 AM EDT | Tornado Warning | PHI | Kent | 45 min |
| Sep 30, 8:09 AM EDT | Coastal Flood Warning | LWX | Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more | 21 hr |
| Sep 30, 8:25 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 95 min |
| Sep 30, 8:45 AM EDT | Severe Thunderstorm Warning | LWX | Harford | 45 min |
| Sep 30, 8:58 AM EDT | Tornado Warning | LWX | Calvert, Saint Mary's | 47 min |
| Sep 30, 9:28 AM EDT | Tornado Warning | LWX | Anne Arundel | 47 min |
| Sep 30, 9:49 AM EDT | Tornado Warning | LWX | Anne Arundel, Calvert | 26 min |
| Sep 30, 9:51 AM EDT | River Flood Warning | LWX | Montgomery | 24 hr |
| Sep 30, 10:29 AM EDT | Flash Flood Warning | LWX | Frederick, Washington | 4 hr |
| Sep 30, 10:38 AM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's and 1 more | 6 hr |
| Sep 30, 10:49 AM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 26 min |
| Sep 30, 10:49 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 12 more | 116 min |
| Sep 30, 11:12 AM EDT | River Flood Warning | LWX | Frederick | 5 hr |
| Sep 30, 11:12 AM EDT | River Flood Warning | LWX | Frederick | 18 hr |
| Sep 30, 11:12 AM EDT | River Flood Warning | LWX | Washington | 18 hr |
| Sep 30, 11:21 AM EDT | Special Weather Statement | PHI | Kent, Talbot | 39 min |
| Sep 30, 12:15 PM EDT | Special Weather Statement | PHI | Queen Anne's | 45 min |
| Sep 30, 12:22 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more | 6 hr |
| Sep 30, 12:39 PM EDT | Tornado Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 7 more | 6 hr |
| Sep 30, 1:37 PM EDT | Special Weather Statement | PHI | Queen Anne's, Talbot | 38 min |
| Sep 30, 1:48 PM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Sep 30, 3:15 PM EDT | Special Weather Statement | PHI | Caroline | 45 min |
| Sep 30, 3:16 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Harford, Kent, Queen Anne's and 4 more | 119 min |
| Sep 30, 3:47 PM EDT | Special Weather Statement | PHI | Caroline | 58 min |
| Sep 30, 4:30 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Calvert, Saint Mary's | 6 hr |
| Sep 30, 4:40 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Howard, Montgomery, Washington | 11 hr |
| Sep 30, 5:43 PM EDT | Mesoscale Discussion | SPC | Somerset | 92 min |
| Sep 30, 6:13 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Harford and 5 more | 6 hr |
| Sep 30, 6:23 PM EDT | Special Weather Statement | PHI | Caroline | 37 min |
| Sep 30, 7:40 PM EDT | Coastal Flood Warning | AKQ | Dorchester, Wicomico | 6 hr |
| Sep 30, 7:49 PM EDT | Coastal Flood Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 6 hr |
| Sep 30, 7:50 PM EDT | Areal Flood Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 16 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 | 17 |
| Tornado Warning | 10 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 35 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 10 |
| River Flood Warning | 4 |
| Flash Flood Watch | 3 |
| Flood Watch | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Coast and beach | |
| Coastal Flood Warning | 4 |
| Coastal Flood Watch | 3 |
| Coastal Flood Advisory | 7 |
| High Surf Advisory | 1 |
| Coastal Flood Statement | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Anne Arundel County36
- Baltimore County34
- Cecil County31
- Kent County30
- Saint Mary's County29
- Calvert County27
- Queen Anne's County27
- City of Baltimore26
- Caroline County26
- Prince George's County25
- Carroll County24
- Talbot County22
- Charles County20
- Frederick County18
- Harford County18
- Howard County18
- Montgomery County18
- Washington County14
- Worcester County13
- Dorchester County10
- Somerset County9
- Wicomico County9
- Allegany County8
- Garrett County5
Nearby
Alerts in force nowTornadoes on recordThe radar archive20092011
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.