Alert archive / Maryland

Mesoscale Discussions in Maryland

2,098 mesoscale discussions since 1986. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.

Mesoscale Discussions by county

Each county as a circle sized by its count since 1986. Tap one for its archive.

Mesoscale Discussions
2,098
Busiest year
2011126 mesoscale discussions
Average year
87over 24 years on file

Over time

By year

Mesoscale discussions are counted from 2003.

By month of the year

By county

Every county with at least one alert. A county page lists each alert that covered it.

The latest mesoscale discussions

The most recent on file, newest first.

IssuedProductOfficeCountiesLasted
Sep 4, 1:31 PM EDTMesoscale DiscussionSPCAllegany, Garrett119 min
Sep 3, 11:56 PM EDTMesoscale DiscussionSPCAnne Arundel, Prince George's64 min
Sep 3, 11:13 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 13 more92 min
Sep 3, 8:19 PM EDTMesoscale DiscussionSPCFrederick, Washington56 min
Sep 3, 6:19 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 14 more116 min
Sep 3, 4:16 PM EDTMesoscale DiscussionSPCAllegany, Washington119 min
Sep 2, 1:21 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Charles, Harford, Howard and 6 more84 min
Sep 2, 11:09 AM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 7 more66 min
Sep 1, 9:46 PM EDTMesoscale DiscussionSPCCaroline, Cecil, Wicomico, Worcester119 min
Sep 1, 6:32 PM EDTMesoscale DiscussionSPCCecil, Harford88 min
Sep 1, 3:13 PM EDTMesoscale DiscussionSPCCecil, Harford, Kent2 hr
Aug 27, 7:26 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Frederick, Harford, Howard, Montgomery and 1 more94 min

Nearby

Alerts in force nowTornadoes on recordThe radar archive

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.