Alert archive / Maryland / Mesoscale Discussions / 2018

Mesoscale Discussions in Maryland, May 2018

20 mesoscale discussions in May 2018. 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 May 2018. Tap one for its archive.

Mesoscale Discussions
20
Busiest day
May 12, 20184 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
May 10, 12:36 PM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Charles, Howard, Kent, Montgomery and 5 more114 min
May 10, 4:53 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 7 more67 min
May 12, 1:51 PM EDTMesoscale DiscussionSPCAllegany, Garrett2 hr
May 12, 3:59 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Cecil, Harford, Howard, Kent and 3 more3 hr
May 12, 5:05 PM EDTMesoscale DiscussionSPCAllegany, Frederick, Garrett, Washington115 min
May 12, 7:16 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Caroline, Carroll, Cecil, Harford and 5 more59 min
May 12, 9:14 PM EDTMesoscale DiscussionSPCCaroline, Talbot61 min
May 13, 1:56 PM EDTMesoscale DiscussionSPCAllegany, Garrett2 hr
May 13, 7:00 PM EDTMesoscale DiscussionSPCCharles, Garrett60 min
May 14, 11:56 AM EDTMesoscale DiscussionSPCAllegany, Carroll, Frederick, Garrett, Howard, Montgomery and 1 more64 min
May 14, 3:26 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 10 more2 hr
May 14, 5:37 PM EDTMesoscale DiscussionSPCSomerset53 min
May 14, 7:22 PM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Charles, Howard, Prince George's, Saint Mary's and 1 more53 min
May 15, 3:33 PM EDTMesoscale DiscussionSPCCecil, Harford117 min
May 15, 5:43 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 10 more92 min
May 15, 8:41 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 7 more94 min
May 22, 1:52 PM EDTMesoscale DiscussionSPCCalvert, Charles, Prince George's, Saint Mary's113 min
May 22, 4:50 PM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's115 min
May 22, 7:24 PM EDTMesoscale DiscussionSPCCalvert, Saint Mary's96 min
May 27, 1:29 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Carroll, Charles, Dorchester and 9 more3 hr

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 archive20172019

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.