Alert archive / Maryland / 2009
Weather alerts in Maryland, July 2009
80 weather alerts in July 2009, 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 July 2009. Tap one for its archive.
- Alerts
- 80
- Warnings
- 43
- Watches
- 7
- Advisories
- 3
- Busiest day
- July 31, 200920 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 |
|---|---|---|---|---|
| Jul 1, 12:03 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 8 more | 87 min |
| Jul 1, 12:48 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Talbot | 57 min |
| Jul 1, 8:09 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 38 min |
| Jul 1, 9:40 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset | 50 min |
| Jul 6, 5:10 AM EDT | Dense Fog Advisory | LWX | Allegany, Carroll, Frederick, Washington | 4 hr |
| Jul 9, 8:51 AM EDT | Coastal Flood Statement | AKQ | Worcester | 60 hr |
| Jul 11, 2:55 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 21 min |
| Jul 12, 12:21 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Charles, Dorchester, Queen Anne's, Saint Mary's and 4 more | 54 min |
| Jul 16, 4:04 PM EDT | Mesoscale Discussion | SPC | Cecil | 86 min |
| Jul 16, 5:38 PM EDT | Coastal Flood Statement | AKQ | Worcester | 29 hr |
| Jul 17, 9:52 AM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Prince George's, Saint Mary's | 83 min |
| Jul 17, 10:29 AM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 6 more | 7 hr |
| Jul 17, 12:59 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Charles, Howard, Montgomery and 4 more | 91 min |
| Jul 17, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 80 min |
| Jul 17, 6:18 PM EDT | Mesoscale Discussion | SPC | Caroline | 57 min |
| Jul 17, 6:25 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 113 min |
| Jul 19, 5:04 AM EDT | Coastal Flood Statement | AKQ | Worcester | 16 hr |
| Jul 19, 5:12 PM EDT | Coastal Flood Statement | AKQ | Worcester | 28 hr |
| Jul 21, 1:54 AM EDT | Coastal Flood Statement | AKQ | Worcester | 19 hr |
| Jul 21, 1:56 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 64 min |
| Jul 21, 5:31 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 44 min |
| Jul 21, 9:24 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 51 min |
| Jul 22, 5:48 PM EDT | Coastal Flood Statement | AKQ | Worcester | 28 hr |
| Jul 23, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 47 min |
| Jul 23, 11:02 PM EDT | Coastal Flood Statement | AKQ | Worcester | 19 hr |
| Jul 23, 11:44 PM EDT | Flash Flood Warning | LWX | Baltimore | 103 min |
| Jul 24, 3:34 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 86 min |
| Jul 24, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 48 min |
| Jul 24, 5:57 PM EDT | Coastal Flood Statement | AKQ | Worcester | 3 days |
| Jul 24, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 62 min |
| Jul 24, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 74 min |
| Jul 24, 7:06 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 24 min |
| Jul 25, 3:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 55 min |
| Jul 25, 7:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 41 min |
| Jul 25, 9:41 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 64 min |
| Jul 25, 10:29 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 61 min |
| Jul 26, 1:40 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 2 hr |
| Jul 26, 2:07 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 7 hr |
| Jul 26, 3:35 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 55 min |
| Jul 26, 3:55 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 50 min |
| Jul 26, 4:16 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 89 min |
| Jul 26, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 44 min |
| Jul 26, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 53 min |
| Jul 26, 5:13 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 47 min |
| Jul 26, 5:39 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 50 min |
| Jul 26, 5:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 65 min |
| Jul 26, 6:19 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 43 min |
| Jul 26, 7:04 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 29 min |
| Jul 26, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 70 min |
| Jul 26, 8:21 PM EDT | Mesoscale Discussion | SPC | Caroline, Somerset, Wicomico, Worcester | 54 min |
| Jul 27, 3:32 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 41 min |
| Jul 29, 12:49 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 8 hr |
| Jul 29, 1:32 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 8 more | 28 min |
| Jul 29, 3:05 PM EDT | Tornado Warning | LWX | Allegany, Washington | 25 min |
| Jul 29, 3:16 PM EDT | Tornado Warning | LWX | Anne Arundel, Calvert, Prince George's | 27 min |
| Jul 29, 4:41 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 23 min |
| Jul 29, 4:43 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 23 min |
| Jul 29, 5:05 PM EDT | Mesoscale Discussion | SPC | Baltimore, Caroline, Cecil, Harford, Kent, Queen Anne's | 55 min |
| Jul 29, 8:36 PM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 101 min |
| Jul 30, 3:30 PM EDT | Flash Flood Watch | PHI | Cecil | 27 hr |
| Jul 31, 3:39 AM EDT | Flood Watch | PBZ | 10 hr | |
| Jul 31, 12:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 12 more | 84 min |
| Jul 31, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 7 hr |
| Jul 31, 1:58 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 47 min |
| Jul 31, 2:06 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore | 39 min |
| Jul 31, 2:10 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 15 min |
| Jul 31, 2:17 PM EDT | Tornado Warning | LWX | Carroll, Frederick | 28 min |
| Jul 31, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 6 hr |
| Jul 31, 2:40 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, Montgomery and 1 more | 50 min |
| Jul 31, 3:04 PM EDT | Flash Flood Warning | PHI | Cecil | 3 hr |
| Jul 31, 3:05 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 10 more | 85 min |
| Jul 31, 3:10 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 65 min |
| Jul 31, 3:28 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Prince George's | 15 min |
| Jul 31, 3:40 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 65 min |
| Jul 31, 3:54 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 53 min |
| Jul 31, 4:08 PM EDT | Flash Flood Warning | PHI | Cecil | 3 hr |
| Jul 31, 4:27 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 48 min |
| Jul 31, 4:34 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Kent, Queen Anne's and 1 more | 86 min |
| Jul 31, 4:57 PM EDT | Tornado Warning | AKQ | Worcester | 27 min |
| Jul 31, 6:54 PM EDT | Mesoscale Discussion | SPC | Somerset, Worcester | 66 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 | 36 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 19 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Statement | 8 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cecil County22
- Caroline County20
- Baltimore County19
- Queen Anne's County19
- Worcester County19
- Talbot County18
- Anne Arundel County17
- Calvert County17
- Kent County17
- Prince George's County17
- Harford County16
- Howard County15
- Charles County15
- Saint Mary's County15
- Somerset County15
- Frederick County15
- Carroll County14
- Dorchester County14
- City of Baltimore14
- Montgomery County14
- Wicomico County12
- Washington County9
- Allegany County4
- Garrett County3
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.