Alert archive / Maryland / Mesoscale Discussions / 2021

Mesoscale Discussions in Maryland, July 2021

24 mesoscale discussions in July 2021. 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 in July 2021. Tap one for its archive.

Mesoscale Discussions
24
Busiest day
July 17, 20214 mesoscale discussions

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.

IssuedProductOfficeCountiesLasted
Jul 1, 11:45 AM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more2 hr
Jul 1, 2:36 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 10 more84 min
Jul 1, 4:16 PM EDTMesoscale DiscussionSPCCaroline, Dorchester, Kent, Queen Anne's, Somerset, Talbot and 2 more89 min
Jul 6, 4:23 PM EDTMesoscale DiscussionSPCCecil, Harford97 min
Jul 8, 6:48 PM EDTMesoscale DiscussionSPCSomerset, Wicomico, Worcester117 min
Jul 8, 10:01 PM EDTMesoscale DiscussionSPCSomerset, Wicomico, Worcester59 min
Jul 9, 2:15 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 11 more2 hr
Jul 9, 4:35 PM EDTMesoscale DiscussionSPCCecil115 min
Jul 11, 2:05 PM EDTMesoscale DiscussionSPCAllegany, Garrett55 min
Jul 11, 8:58 PM EDTMesoscale DiscussionSPCCarroll, Washington62 min
Jul 12, 1:32 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 12 more88 min
Jul 12, 7:25 PM EDTMesoscale DiscussionSPCCecil, Harford, Kent2 hr
Jul 13, 4:07 PM EDTMesoscale DiscussionSPCAllegany, Garrett113 min
Jul 14, 3:24 PM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's2 hr
Jul 17, 12:00 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more3 hr
Jul 17, 3:02 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Caroline, Cecil, Charles, Harford and 7 more88 min
Jul 17, 4:38 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more97 min
Jul 17, 6:54 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more2 hr
Jul 17, 10:02 PM EDTMesoscale DiscussionSPCCaroline, Cecil, Kent, Queen Anne's58 min
Jul 21, 10:32 AM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 9 more58 min
Jul 21, 2:39 PM EDTMesoscale DiscussionSPCCalvert, Caroline, Cecil, Dorchester, Kent, Queen Anne's and 4 more2 hr
Jul 29, 11:58 AM EDTMesoscale DiscussionSPCAllegany, Garrett2 hr
Jul 29, 1:21 PM EDTMesoscale DiscussionSPCCarroll, Frederick, Washington114 min
Jul 29, 4:26 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more94 min

By county

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

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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.