Alert archive / Maryland / 2023

Weather alerts in Maryland, September 2023

159 weather alerts in September 2023, 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 September 2023. Tap one for its archive.

Alerts
159
Warnings
69
Watches
12
Advisories
32
Busiest day
September 9, 202339 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
Aug 31, 8:43 PM EDTCoastal Flood AdvisoryLWXAnne Arundel, Saint Mary's15 hr
Sep 1, 1:56 PM EDTCoastal Flood AdvisoryLWXAnne Arundel, Charles, Saint Mary's10 hr
Sep 1, 2:42 PM EDTCoastal Flood AdvisoryAKQDorchester, Somerset, Wicomico13 hr
Sep 2, 2:35 AM EDTCoastal Flood AdvisoryLWXAnne Arundel, Saint Mary's7 hr
Sep 2, 3:02 PM EDTCoastal Flood AdvisoryLWXAnne Arundel, Saint Mary's10 hr
Sep 5, 12:36 AM EDTHeat AdvisoryLWXAllegany, Anne Arundel, Baltimore, Carroll, Cecil, Charles and 7 more18 hr
Sep 5, 3:24 AM EDTBeach Hazards StatementAKQWorcester28 hr
Sep 6, 3:11 AM EDTHeat AdvisoryLWXAllegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more16 hr
Sep 7, 11:45 AM EDTSevere Thunderstorm WarningLWXAllegany29 min
Sep 7, 11:58 AM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Carroll, Cecil, Charles and 8 more3 hr
Sep 7, 1:14 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more8 hr
Sep 7, 1:23 PM EDTSevere Thunderstorm WarningLWXWashington50 min
Sep 7, 1:42 PM EDTSevere Thunderstorm WarningLWXMontgomery33 min
Sep 7, 1:55 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington50 min
Sep 7, 2:09 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery51 min
Sep 7, 2:31 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Howard, Montgomery44 min
Sep 7, 3:06 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Frederick, Howard, Montgomery84 min
Sep 7, 3:14 PM EDTSevere Thunderstorm WarningLWXBaltimore, Carroll, Frederick46 min
Sep 7, 3:55 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford35 min
Sep 7, 4:11 PM EDTSevere Thunderstorm WarningLWXBaltimore, City of Baltimore49 min
Sep 7, 4:28 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford32 min
Sep 7, 4:48 PM EDTMesoscale DiscussionSPCBaltimore, Cecil, Harford87 min
Sep 7, 4:58 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford33 min
Sep 7, 5:16 PM EDTSevere Thunderstorm WarningLWXHoward, Montgomery, Prince George's44 min
Sep 7, 5:47 PM EDTSevere Thunderstorm WarningLWXCarroll15 min
Sep 7, 6:13 PM EDTMesoscale DiscussionSPCBaltimore, Cecil, Harford, City of Baltimore92 min
Sep 7, 6:49 PM EDTSevere Thunderstorm WarningLWXBaltimore, Cecil, Harford26 min
Sep 7, 7:17 PM EDTSevere Thunderstorm WarningLWXCalvert, Saint Mary's28 min
Sep 7, 7:51 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Cecil, Harford, Kent and 4 more84 min
Sep 7, 7:55 PM EDTSevere Thunderstorm WarningPHITalbot26 min
Sep 7, 7:56 PM EDTSpecial Weather StatementAKQDorchester49 min
Sep 7, 8:20 PM EDTCoastal Flood AdvisoryLWXAnne Arundel, Saint Mary's8 hr
Sep 7, 8:21 PM EDTSpecial Weather StatementPHICaroline, Talbot24 min
Sep 7, 8:45 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot26 min
Sep 7, 9:14 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's30 min
Sep 8, 4:22 AM EDTSevere Thunderstorm WarningLWXAnne Arundel, Baltimore, City of Baltimore23 min
Sep 8, 2:46 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 10 more119 min
Sep 8, 3:11 PM EDTSevere Thunderstorm WatchSPCAllegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more8 hr
Sep 8, 6:19 PM EDTSevere Thunderstorm WarningLWXMontgomery41 min
Sep 8, 6:34 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more86 min
Sep 8, 6:41 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford34 min
Sep 8, 7:18 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford27 min
Sep 8, 7:27 PM EDTSevere Thunderstorm WarningLWXBaltimore, Carroll, Howard48 min
Sep 8, 7:53 PM EDTSpecial Weather StatementCTPHarford37 min
Sep 8, 8:00 PM EDTSevere Thunderstorm Warning Considerable damage threatLWXBaltimore, Carroll30 min
Sep 8, 8:06 PM EDTFlash Flood WarningLWXBaltimore83 min
Sep 8, 8:22 PM EDTSevere Thunderstorm Warning Considerable damage threatLWXBaltimore, Cecil, Harford53 min
Sep 8, 8:56 PM EDTCoastal Flood AdvisoryLWXAnne Arundel5 hr
Sep 8, 9:30 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's33 min
Sep 8, 9:45 PM EDTSevere Thunderstorm WarningLWXCecil30 min
Sep 8, 10:25 PM EDTSpecial Weather StatementPHIKent35 min
Sep 8, 10:31 PM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Caroline, Cecil, Charles, Harford and 5 more59 min
Sep 8, 11:02 PM EDTSpecial Weather StatementPHIKent58 min
Sep 8, 11:11 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's49 min
Sep 8, 11:50 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's, Talbot40 min
Sep 8, 11:54 PM EDTSpecial Weather StatementPHIKent51 min
Sep 9, 2:57 AM EDTSevere Thunderstorm WarningLWXHoward, Montgomery22 min
Sep 9, 6:55 AM EDTSpecial Weather StatementAKQSomerset35 min
Sep 9, 7:29 AM EDTSpecial Weather StatementAKQSomerset46 min
Sep 9, 8:02 AM EDTSpecial Weather StatementAKQWorcester43 min
Sep 9, 1:30 PM EDTSpecial Weather StatementAKQSomerset45 min
Sep 9, 2:04 PM EDTFlood WatchLWXAllegany, Anne Arundel, Baltimore, Howard, Montgomery, Prince George's and 1 more5 hr
Sep 9, 2:08 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 8 more3 hr
Sep 9, 2:25 PM EDTSevere Thunderstorm WarningLWXPrince George's24 min
Sep 9, 2:55 PM EDTFlash Flood WarningLWXPrince George's3 hr
Sep 9, 3:18 PM EDTFlash Flood WarningLWXCalvert, Prince George's2 hr
Sep 9, 3:18 PM EDTSevere Thunderstorm WarningLWXMontgomery42 min
Sep 9, 3:41 PM EDTSevere Thunderstorm WarningLWXMontgomery32 min
Sep 9, 3:56 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Howard, Montgomery38 min
Sep 9, 4:02 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery43 min
Sep 9, 4:13 PM EDTSpecial Weather StatementPHICaroline32 min
Sep 9, 4:23 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 7 more5 hr
Sep 9, 4:33 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington16 min
Sep 9, 4:39 PM EDTSevere Thunderstorm WarningLWXCharles36 min
Sep 9, 4:46 PM EDTSevere Thunderstorm WarningLWXCalvert, Saint Mary's28 min
Sep 9, 5:16 PM EDTSpecial Weather StatementAKQDorchester44 min
Sep 9, 6:00 PM EDTSevere Thunderstorm WarningLWXWashington30 min
Sep 9, 6:05 PM EDTSpecial Weather StatementPHIQueen Anne's25 min
Sep 9, 6:06 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 8 more114 min
Sep 9, 6:17 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's43 min
Sep 9, 6:36 PM EDTSevere Thunderstorm WarningLWXCecil54 min
Sep 9, 6:49 PM EDTSpecial Weather StatementAKQWorcester41 min
Sep 9, 7:29 PM EDTSpecial Weather StatementAKQWorcester46 min
Sep 9, 8:08 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 8 more2 hr
Sep 10, 3:30 AM EDTFlood WatchLWXAllegany18 hr
Sep 10, 4:10 AM EDTSpecial Weather StatementAKQDorchester35 min
Sep 10, 10:47 AM EDTSpecial Weather StatementAKQWorcester28 min
Sep 11, 12:56 AM EDTAreal Flood AdvisoryPHIKent, Queen Anne's73 min
Sep 11, 7:51 PM EDTBeach Hazards StatementAKQWorcester24 hr
Sep 12, 1:30 PM EDTSpecial Weather StatementPHICaroline30 min
Sep 12, 1:44 PM EDTFlood WatchLWXBaltimore, Carroll, Cecil, Harford13 hr
Sep 12, 2:59 PM EDTSpecial Weather StatementPHITalbot31 min
Sep 12, 8:02 PM EDTBeach Hazards StatementAKQWorcester5 days
Sep 12, 10:04 PM EDTFlash Flood WarningLWXMontgomery2 hr
Sep 12, 10:38 PM EDTSevere Thunderstorm WarningLWXMontgomery, Prince George's37 min
Sep 12, 11:00 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Howard, Montgomery, Prince George's30 min
Sep 12, 11:07 PM EDTFlash Flood WarningLWXAnne Arundel, Baltimore, City of Baltimore2 hr
Sep 12, 11:35 PM EDTFlash Flood WarningLWXMontgomery, Prince George's3 hr
Sep 12, 11:40 PM EDTFlash Flood WarningLWXBaltimore, Harford, City of Baltimore115 min
Sep 12, 11:56 PM EDTTornado WarningLWXBaltimore, Harford34 min
Sep 13, 12:01 AM EDTSpecial Weather StatementPHIQueen Anne's29 min
Sep 13, 12:02 AM EDTSevere Thunderstorm WarningLWXBaltimore, Harford28 min
Sep 13, 12:06 AM EDTFlash Flood Warning EmergencyCatastrophic damage threatLWXCity of Baltimore88 min
Sep 13, 12:08 AM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot52 min
Sep 13, 12:25 AM EDTTornado WarningPHIQueen Anne's, Talbot35 min
Sep 13, 12:43 AM EDTMesoscale DiscussionSPCCaroline, Cecil92 min
Sep 13, 12:44 AM EDTSevere Thunderstorm WarningLWXCecil31 min
Sep 13, 12:49 AM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's26 min
Sep 13, 1:06 AM EDTSpecial Weather StatementPHICaroline24 min
Sep 13, 1:32 AM EDTAreal Flood WarningLWXAnne Arundel, Baltimore, City of Baltimore98 min
Sep 13, 1:34 AM EDTAreal Flood WarningLWXCity of Baltimore101 min
Sep 13, 1:35 AM EDTAreal Flood WarningLWXBaltimore, Harford, City of Baltimore70 min
Sep 13, 1:45 AM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's45 min
Sep 13, 1:48 AM EDTSpecial Weather StatementAKQWicomico42 min
Sep 13, 1:54 AM EDTSpecial Weather StatementPHICaroline36 min
Sep 13, 2:30 AM EDTSpecial Weather StatementAKQWicomico45 min
Sep 13, 3:09 AM EDTSpecial Weather StatementAKQWicomico51 min
Sep 13, 3:30 AM EDTFlash Flood WarningAKQWicomico3 hr
Sep 13, 3:41 AM EDTCoastal Flood AdvisoryLWXAnne Arundel3 hr
Sep 13, 3:58 AM EDTSpecial Weather StatementAKQWorcester62 min
Sep 14, 2:24 AM EDTHigh Surf AdvisoryAKQWorcester47 hr
Sep 16, 2:40 AM EDTCoastal Flood AdvisoryLWXAnne Arundel, Saint Mary's29 hr
Sep 16, 4:14 AM EDTCoastal Flood StatementAKQDorchester, Somerset, Wicomico38 hr
Sep 17, 5:39 PM EDTCoastal Flood AdvisoryLWXAnne Arundel4 hr
Sep 20, 3:56 PM EDTBeach Hazards StatementAKQWorcester28 hr
Sep 21, 11:19 AM EDTTropical Storm WarningAKQDorchester, Somerset, Wicomico, Worcester57 hr
Sep 21, 2:46 PM EDTCoastal Flood WatchLWXAnne Arundel, Calvert, Charles, Saint Mary's31 hr
Sep 21, 3:22 PM EDTFlood WatchAKQDorchester, Somerset, Wicomico, Worcester60 hr
Sep 21, 3:57 PM EDTWind AdvisoryPHICaroline, Kent, Queen Anne's, Talbot49 hr
Sep 21, 4:59 PM EDTTropical Storm WarningLWXCalvert, Saint Mary's51 hr
Sep 22, 4:20 AM EDTWind AdvisoryLWXAnne Arundel, Baltimore, Cecil, Charles, Harford, Howard and 3 more39 hr
Sep 22, 6:29 AM EDTCoastal Flood WatchAKQDorchester, Somerset, Wicomico, Worcester9 hr
Sep 22, 8:50 AM EDTCoastal Flood WarningLWXAnne Arundel, Saint Mary's58 hr
Sep 22, 8:50 AM EDTCoastal Flood AdvisoryLWXAnne Arundel, Baltimore, Calvert, Charles, Harford, Prince George's and 2 more69 hr
Sep 22, 3:11 PM EDTCoastal Flood WarningAKQDorchester, Somerset, Wicomico, Worcester61 hr
Sep 22, 3:52 PM EDTCoastal Flood AdvisoryPHICaroline, Kent, Queen Anne's, Talbot58 hr
Sep 23, 11:28 AM EDTAreal Flood AdvisoryAKQDorchester, Somerset, Wicomico, Worcester3 hr
Sep 23, 2:17 PM EDTFlood WatchLWXAnne Arundel, Baltimore, Charles, Howard, Montgomery, Prince George's and 1 more13 hr
Sep 23, 2:19 PM EDTAreal Flood AdvisoryAKQSomerset, Wicomico, Worcester3 hr
Sep 23, 5:14 PM EDTCoastal Flood AdvisoryAKQSomerset, Wicomico, Worcester35 hr
Sep 23, 8:09 PM EDTBeach Hazards StatementAKQWorcester24 hr
Sep 23, 8:09 PM EDTHigh Surf AdvisoryAKQWorcester7 hr
Sep 24, 10:15 AM EDTCoastal Flood AdvisoryLWXCecil, Charles, Harford17 hr
Sep 24, 10:15 AM EDTCoastal Flood AdvisoryLWXAnne Arundel, Saint Mary's4 hr
Sep 24, 1:19 PM EDTCoastal Flood AdvisoryAKQWorcester7 hr
Sep 24, 2:11 PM EDTCoastal Flood WarningLWXSaint Mary's13 hr
Sep 25, 3:11 PM EDTCoastal Flood WarningAKQDorchester, Somerset, Wicomico71 hr
Sep 25, 3:11 PM EDTCoastal Flood AdvisoryAKQDorchester, Somerset, Wicomico, Worcester58 hr
Sep 25, 8:08 PM EDTBeach Hazards StatementAKQWorcester6 days
Sep 26, 2:26 AM EDTCoastal Flood WatchLWXSaint Mary's22 hr
Sep 26, 2:26 AM EDTCoastal Flood AdvisoryLWXAnne Arundel, Calvert, Charles, Harford, Saint Mary's4 days
Sep 26, 3:51 AM EDTHigh Surf AdvisoryAKQWorcester50 hr
Sep 26, 9:51 PM EDTCoastal Flood WatchAKQDorchester, Somerset, Wicomico6 hr
Sep 27, 12:50 AM EDTCoastal Flood WarningLWXSaint Mary's53 hr
Sep 28, 4:04 AM EDTCoastal Flood AdvisoryAKQDorchester, Somerset, Wicomico34 hr
Sep 28, 2:36 PM EDTCoastal Flood StatementAKQWorcester7 hr
Sep 30, 6:38 AM EDTDense Fog AdvisoryLWX2 hr
Sep 30, 2:39 PM EDTCoastal Flood AdvisoryAKQDorchester, Somerset, Wicomico27 hr
Sep 30, 2:59 PM EDTCoastal Flood AdvisoryLWXSaint Mary's61 min

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 archive20222024

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.