Alert archive / Maryland / 2021

Weather alerts in Maryland, May 2021

93 weather alerts in May 2021, 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 May 2021. Tap one for its archive.

Alerts
93
Warnings
49
Watches
4
Advisories
11
Busiest day
May 26, 202121 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.

IssuedProductOfficeCountiesLasted
Apr 30, 8:56 PM EDTWind AdvisoryPHICaroline, Kent, Queen Anne's, Talbot6 hr
May 3, 2:47 PM EDTMesoscale DiscussionSPCGarrett118 min
May 3, 4:00 PM EDTSevere Thunderstorm WarningAKQDorchester26 min
May 3, 4:24 PM EDTSpecial Weather StatementAKQWicomico51 min
May 3, 6:26 PM EDTTornado WarningLWXWashington34 min
May 3, 6:50 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington40 min
May 3, 7:08 PM EDTAreal Flood WarningLWXWashington3 hr
May 3, 7:16 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Frederick, Harford, Howard, Kent and 1 more29 min
May 3, 7:40 PM EDTTornado WarningLWXFrederick35 min
May 3, 8:11 PM EDTTornado WarningLWXFrederick34 min
May 3, 8:31 PM EDTTornado WarningLWXCarroll29 min
May 3, 8:47 PM EDTAreal Flood WarningLWXFrederick3 hr
May 3, 8:49 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick26 min
May 3, 8:56 PM EDTTornado WarningLWXCarroll34 min
May 3, 9:22 PM EDTTornado WarningLWXBaltimore24 min
May 4, 12:12 PM EDTSevere Thunderstorm WarningLWXGarrett48 min
May 4, 1:04 PM EDTMesoscale DiscussionSPCCharles56 min
May 4, 1:51 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more6 hr
May 4, 3:50 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Charles, Dorchester, Howard and 7 more115 min
May 4, 4:55 PM EDTSevere Thunderstorm WarningLWXCharles, Montgomery, Prince George's50 min
May 4, 5:27 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert, Charles, Prince George's33 min
May 4, 5:49 PM EDTSevere Thunderstorm WarningLWXCalvert, Charles, Saint Mary's56 min
May 4, 5:54 PM EDTSevere Thunderstorm WarningPHIQueen Anne's, Talbot51 min
May 4, 6:32 PM EDTSevere Thunderstorm WarningAKQDorchester43 min
May 4, 6:50 PM EDTSpecial Weather StatementPHITalbot40 min
May 4, 7:04 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot41 min
May 4, 7:07 PM EDTSevere Thunderstorm WarningAKQDorchester, Somerset, Wicomico38 min
May 4, 7:38 PM EDTSevere Thunderstorm WarningAKQSomerset, Wicomico, Worcester67 min
May 5, 1:03 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more2 hr
May 5, 2:40 PM EDTSevere Thunderstorm WarningLWXCharles50 min
May 5, 3:17 PM EDTSevere Thunderstorm WarningLWXCalvert, Charles, Saint Mary's43 min
May 5, 3:39 PM EDTSevere Thunderstorm WarningAKQDorchester61 min
May 5, 4:26 PM EDTSpecial Weather StatementAKQWicomico49 min
May 5, 4:36 PM EDTSpecial Weather StatementAKQSomerset39 min
May 5, 5:05 PM EDTSpecial Weather StatementAKQWorcester40 min
May 5, 5:28 PM EDTSevere Thunderstorm WarningAKQWorcester21 min
May 7, 6:45 PM EDTSpecial Weather StatementAKQWicomico30 min
May 8, 12:21 PM EDTSpecial Weather StatementAKQWorcester24 min
May 8, 12:45 PM EDTSpecial Weather StatementAKQWorcester45 min
May 8, 3:08 PM EDTSpecial Weather StatementAKQWicomico37 min
May 8, 3:21 PM EDTSpecial Weather StatementPHIQueen Anne's24 min
May 8, 3:38 PM EDTSpecial Weather StatementAKQWorcester37 min
May 8, 3:50 PM EDTSpecial Weather StatementPHICaroline25 min
May 8, 4:06 PM EDTSpecial Weather StatementPHICaroline24 min
May 8, 6:47 PM EDTSpecial Weather StatementPHICaroline28 min
May 9, 3:48 PM EDTCoastal Flood StatementAKQDorchester, Somerset, Wicomico14 hr
May 9, 11:12 PM EDTCoastal Flood AdvisoryLWXAnne Arundel, Baltimore, City of Baltimore8 hr
May 10, 3:26 PM EDTFreeze WatchLWX23 hr
May 11, 2:25 PM EDTFreeze WarningLWX19 hr
May 12, 4:06 AM EDTFreeze WatchLWX9 hr
May 12, 1:32 PM EDTFrost AdvisoryLWXAllegany19 hr
May 12, 1:32 PM EDTFreeze WarningLWX19 hr
May 17, 2:51 AM EDTDense Fog AdvisoryLWXAllegany, Frederick, Washington7 hr
May 21, 4:12 AM EDTBeach Hazards StatementAKQWorcester4 days
May 25, 3:03 PM EDTCoastal Flood AdvisoryLWXAnne Arundel, Baltimore, City of Baltimore19 hr
May 26, 3:41 AM EDTCoastal Flood AdvisoryLWXCecil, Harford6 hr
May 26, 1:21 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more84 min
May 26, 2:48 PM EDTSevere Thunderstorm WatchSPCAllegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more7 hr
May 26, 2:51 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington39 min
May 26, 3:21 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington39 min
May 26, 3:31 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington44 min
May 26, 3:40 PM EDTSevere Thunderstorm WarningLWXMontgomery28 min
May 26, 3:56 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick49 min
May 26, 3:59 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery9 min
May 26, 4:41 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more64 min
May 26, 4:54 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's66 min
May 26, 5:00 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Howard, Montgomery, Prince George's45 min
May 26, 5:26 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Baltimore, Harford, Howard, City of Baltimore49 min
May 26, 5:52 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert, Charles, Prince George's38 min
May 26, 6:17 PM EDTSevere Thunderstorm WarningLWXCecil, Harford58 min
May 26, 6:34 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 9 more116 min
May 26, 6:51 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery, Washington39 min
May 26, 7:21 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Howard, Montgomery39 min
May 26, 7:27 PM EDTSevere Thunderstorm WarningLWXMontgomery48 min
May 26, 7:53 PM EDTSevere Thunderstorm WarningLWXBaltimore, Carroll, Harford, Howard, City of Baltimore52 min
May 26, 7:59 PM EDTSevere Thunderstorm WarningLWXMontgomery, Prince George's46 min
May 26, 8:21 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's39 min
May 26, 8:27 PM EDTSpecial Weather StatementCTPHarford18 min
May 26, 8:53 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's52 min
May 26, 9:19 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Charles, Prince George's41 min
May 26, 9:35 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert, Charles, Prince George's, Saint Mary's27 min
May 28, 2:34 PM EDTTornado WarningLWXSaint Mary's26 min
May 28, 3:56 PM EDTMesoscale DiscussionSPCCharles, Saint Mary's2 hr
May 28, 4:09 PM EDTSpecial Weather StatementAKQDorchester51 min
May 28, 4:17 PM EDTBeach Hazards StatementAKQWorcester52 hr
May 28, 5:46 PM EDTSevere Thunderstorm WarningLWXCharles44 min
May 28, 6:15 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's34 min
May 28, 7:18 PM EDTMesoscale DiscussionSPCCalvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico87 min
May 29, 4:00 AM EDTCoastal Flood AdvisoryAKQWorcester30 hr
May 29, 12:14 PM EDTHigh Surf AdvisoryAKQWorcester16 hr
May 29, 4:40 PM EDTCoastal Flood AdvisoryLWXSaint Mary's119 min
May 30, 3:02 AM EDTCoastal Flood AdvisoryLWXCharles, Saint Mary's11 hr
May 30, 4:17 AM EDTHigh Surf AdvisoryAKQWorcester6 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

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.