Alert archive / Maryland / 2026

Weather alerts in Maryland, August 2026

161 weather alerts in August 2026, 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 August 2026. Tap one for its archive.

Alerts
161
Warnings
95
Watches
13
Advisories
9
Busiest day
August 10, 202647 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 2, 2:16 AM EDTCoastal Flood AdvisoryLWXAnne Arundel8 hr
Aug 2, 2:43 AM EDTFlood WatchLWXAllegany, Anne Arundel, Baltimore, Garrett, Howard, Montgomery and 2 more21 hr
Aug 2, 4:34 PM EDTFlash Flood WarningLWXMontgomery3 hr
Aug 2, 6:12 PM EDTCoastal Flood AdvisoryLWXAnne Arundel16 hr
Aug 2, 8:05 PM EDTBeach Hazards StatementAKQWorcester24 hr
Aug 4, 4:09 PM EDTFlood WatchLWXAnne Arundel, Baltimore, Charles, Harford, Montgomery, Prince George's and 1 more23 hr
Aug 5, 11:55 AM EDTFlash Flood WarningLWXBaltimore105 min
Aug 6, 1:39 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Carroll, Cecil, Charles and 8 more2 hr
Aug 6, 2:46 PM EDTSevere Thunderstorm WarningLWXMontgomery44 min
Aug 6, 6:28 PM EDTFlash Flood WarningLWXBaltimore2 hr
Aug 6, 7:08 PM EDTSpecial Weather StatementLWXPrince George's37 min
Aug 7, 12:50 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more2 hr
Aug 7, 1:22 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 9 more7 hr
Aug 7, 3:07 PM EDTSevere Thunderstorm WarningLWXWashington23 min
Aug 7, 3:29 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington46 min
Aug 7, 4:02 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford41 min
Aug 7, 4:43 PM EDTFlash Flood WarningLWXBaltimore, Harford3 hr
Aug 7, 4:56 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Prince George's15 min
Aug 7, 5:19 PM EDTSevere Thunderstorm WarningLWXBaltimore, City of Baltimore29 min
Aug 7, 5:22 PM EDTFlash Flood WarningLWXBaltimore, City of Baltimore3 hr
Aug 7, 5:58 PM EDTSevere Thunderstorm WarningLWXMontgomery27 min
Aug 7, 6:18 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's42 min
Aug 7, 6:23 PM EDTFlash Flood WarningLWXMontgomery46 min
Aug 7, 6:58 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's32 min
Aug 8, 11:55 AM EDTMesoscale DiscussionSPCBaltimore, Carroll, Cecil, Frederick, Harford, Howard and 2 more95 min
Aug 8, 1:12 PM EDTSevere Thunderstorm WatchSPCCaroline, Kent, Queen Anne's, Talbot5 hr
Aug 8, 1:18 PM EDTSevere Thunderstorm WarningLWXCecil, Harford57 min
Aug 8, 1:30 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's45 min
Aug 8, 1:44 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's46 min
Aug 8, 3:08 PM EDTMesoscale DiscussionSPCCalvert, Charles, Dorchester, Montgomery, Prince George's, Saint Mary's and 2 more97 min
Aug 8, 4:27 PM EDTSevere Thunderstorm WarningLWXCharles63 min
Aug 9, 2:32 AM EDTSpecial Weather StatementLWXGarrett28 min
Aug 9, 3:08 AM EDTSpecial Weather StatementLWXGarrett52 min
Aug 10, 9:29 AM EDTMesoscale DiscussionSPCCecil91 min
Aug 10, 12:30 PM EDTMesoscale DiscussionSPCGarrett2 hr
Aug 10, 12:59 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more2 hr
Aug 10, 1:13 PM EDTSevere Thunderstorm WatchSPCAllegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 10 more7 hr
Aug 10, 1:14 PM EDTSevere Thunderstorm WarningLWXGarrett61 min
Aug 10, 1:48 PM EDTSevere Thunderstorm WarningLWXAllegany57 min
Aug 10, 1:49 PM EDTTornado WarningLWXAllegany, Garrett26 min
Aug 10, 1:57 PM EDTSevere Thunderstorm WarningLWXAllegany, Washington48 min
Aug 10, 2:10 PM EDTSevere Thunderstorm WatchSPCCaroline, Kent, Queen Anne's, Talbot6 hr
Aug 10, 2:25 PM EDTSevere Thunderstorm Warning Considerable damage threatLWXAllegany, Washington35 min
Aug 10, 2:29 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington31 min
Aug 10, 2:43 PM EDTSevere Thunderstorm WarningLWXWashington50 min
Aug 10, 2:46 PM EDTSevere Thunderstorm WarningLWXFrederick44 min
Aug 10, 2:50 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington25 min
Aug 10, 2:56 PM EDTSevere Thunderstorm WarningLWXHarford38 min
Aug 10, 3:10 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Washington65 min
Aug 10, 3:12 PM EDTFlash Flood WarningLWXFrederick, Washington3 hr
Aug 10, 3:12 PM EDTSevere Thunderstorm WarningLWXHarford48 min
Aug 10, 3:15 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery60 min
Aug 10, 3:21 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick39 min
Aug 10, 3:27 PM EDTSevere Thunderstorm WarningLWXWashington18 min
Aug 10, 3:39 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 1 more2 hr
Aug 10, 3:55 PM EDTSevere Thunderstorm Warning Considerable damage threatLWXBaltimore, Carroll, Frederick, Harford, Howard, Montgomery and 1 more50 min
Aug 10, 3:57 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Howard, Montgomery, Prince George's48 min
Aug 10, 4:03 PM EDTSevere Thunderstorm WarningLWXCharles, Prince George's57 min
Aug 10, 4:10 PM EDTSevere Thunderstorm Warning Destructive damage threatLWXBaltimore, Carroll, Howard35 min
Aug 10, 4:14 PM EDTTornado WarningLWXBaltimore, Carroll, Howard, City of Baltimore18 min
Aug 10, 4:18 PM EDTTornado WarningLWXAnne Arundel, Baltimore, Howard, City of Baltimore13 min
Aug 10, 4:25 PM EDTSevere Thunderstorm WatchSPCDorchester, Somerset, Wicomico, Worcester5 hr
Aug 10, 4:33 PM EDTSevere Thunderstorm WarningLWXCecil, Harford42 min
Aug 10, 4:39 PM EDTSevere Thunderstorm WarningPHIKent, Queen Anne's, Talbot66 min
Aug 10, 4:41 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Baltimore, Calvert, Howard, Prince George's, City of Baltimore31 min
Aug 10, 5:05 PM EDTSevere Thunderstorm WarningLWXPrince George's25 min
Aug 10, 5:21 PM EDTSevere Thunderstorm Warning Destructive damage threatLWXPrince George's24 min
Aug 10, 5:29 PM EDTSevere Thunderstorm WarningLWXCalvert, Charles, Prince George's, Saint Mary's46 min
Aug 10, 5:30 PM EDTSevere Thunderstorm WarningLWXCharles, Saint Mary's45 min
Aug 10, 5:33 PM EDTSevere Thunderstorm WarningLWXCecil27 min
Aug 10, 5:36 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert, Prince George's24 min
Aug 10, 5:36 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot39 min
Aug 10, 5:40 PM EDTFlash Flood WarningLWXBaltimore, Harford, City of Baltimore88 min
Aug 10, 5:45 PM EDTSevere Thunderstorm WarningAKQDorchester45 min
Aug 10, 5:56 PM EDTSevere Thunderstorm WarningLWXCalvert, Saint Mary's64 min
Aug 10, 6:07 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot38 min
Aug 10, 6:26 PM EDTSevere Thunderstorm WarningAKQDorchester, Wicomico64 min
Aug 10, 6:28 PM EDTMesoscale DiscussionSPCCalvert, Caroline, Dorchester, Saint Mary's, Somerset, Talbot and 2 more92 min
Aug 10, 6:51 PM EDTSevere Thunderstorm WarningLWXSaint Mary's24 min
Aug 10, 7:26 PM EDTSpecial Weather StatementAKQSomerset, Wicomico, Worcester49 min
Aug 10, 11:06 PM EDTSpecial Weather StatementLWXGarrett24 min
Aug 10, 11:25 PM EDTSpecial Weather StatementLWXGarrett35 min
Aug 10, 11:56 PM EDTSpecial Weather StatementLWXGarrett49 min
Aug 11, 12:47 AM EDTSpecial Weather StatementLWXGarrett28 min
Aug 11, 1:09 AM EDTSevere Thunderstorm WarningLWXAllegany, Garrett36 min
Aug 11, 1:10 AM EDTSpecial Weather StatementLWXGarrett35 min
Aug 11, 1:21 AM EDTFlash Flood WarningLWXGarrett4 hr
Aug 11, 1:42 AM EDTSpecial Weather StatementLWXGarrett33 min
Aug 11, 2:06 AM EDTFlood WatchLWXGarrett16 hr
Aug 11, 2:13 AM EDTSpecial Weather StatementLWXGarrett32 min
Aug 11, 5:35 AM EDTAreal Flood WarningLWXGarrett8 hr
Aug 14, 1:14 PM EDTSpecial Weather StatementAKQWicomico46 min
Aug 14, 1:37 PM EDTSevere Thunderstorm WarningAKQWicomico, Worcester38 min
Aug 15, 1:48 AM EDTDense Fog AdvisoryLWXAllegany, Garrett, Washington8 hr
Aug 15, 12:52 PM EDTFlood WatchLWXAllegany, Charles, Garrett, Montgomery, Prince George's35 hr
Aug 16, 3:28 PM EDTMesoscale DiscussionSPCAllegany, Washington2 hr
Aug 16, 3:34 PM EDTCoastal Flood AdvisoryLWXAnne Arundel8 hr
Aug 16, 4:10 PM EDTSpecial Weather StatementLWXGarrett80 min
Aug 16, 4:35 PM EDTSevere Thunderstorm WarningLWXGarrett40 min
Aug 16, 4:36 PM EDTSevere Thunderstorm WatchSPCAllegany, Carroll, Charles, Frederick, Garrett, Howard and 3 more6 hr
Aug 16, 4:56 PM EDTSevere Thunderstorm WarningLWXGarrett34 min
Aug 16, 5:00 PM EDTSevere Thunderstorm WarningLWXAllegany, Garrett32 min
Aug 16, 5:48 PM EDTSevere Thunderstorm WarningLWXAllegany42 min
Aug 16, 7:00 PM EDTMesoscale DiscussionSPCCalvert, Carroll, Charles, Frederick, Howard, Montgomery and 3 more60 min
Aug 16, 8:59 PM EDTTornado WarningLWXCharles, Prince George's16 min
Aug 16, 9:07 PM EDTSevere Thunderstorm WarningLWXCharles23 min
Aug 16, 9:17 PM EDTSevere Thunderstorm WarningLWXCharles13 min
Aug 16, 9:29 PM EDTSevere Thunderstorm WarningLWXCalvert, Charles, Saint Mary's46 min
Aug 17, 12:07 AM EDTCoastal Flood AdvisoryLWXHarford3 hr
Aug 17, 5:55 PM EDTSpecial Weather StatementPHIKent50 min
Aug 17, 7:58 PM EDTSpecial Weather StatementAKQDorchester47 min
Aug 17, 9:03 PM EDTSevere Thunderstorm WarningLWXCalvert, Saint Mary's42 min
Aug 17, 9:49 PM EDTSpecial Weather StatementAKQSomerset41 min
Aug 20, 1:53 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more2 hr
Aug 20, 2:31 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more7 hr
Aug 20, 2:43 PM EDTTornado WarningPHIKent, Queen Anne's32 min
Aug 20, 2:46 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery29 min
Aug 20, 2:57 PM EDTSevere Thunderstorm WarningLWXMontgomery33 min
Aug 20, 2:58 PM EDTTornado WatchSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more7 hr
Aug 20, 4:26 PM EDTMesoscale DiscussionSPCCecil, Harford, Kent2 hr
Aug 20, 5:05 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's, Talbot40 min
Aug 20, 5:30 PM EDTTornado WarningPHIKent, Queen Anne's30 min
Aug 20, 5:39 PM EDTTornado WarningPHIQueen Anne's36 min
Aug 20, 5:40 PM EDTSevere Thunderstorm WarningPHICaroline, Kent, Queen Anne's50 min
Aug 20, 6:21 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot39 min
Aug 20, 6:35 PM EDTSpecial Weather StatementAKQDorchester55 min
Aug 20, 6:41 PM EDTTornado WarningAKQDorchester34 min
Aug 20, 6:42 PM EDTMesoscale DiscussionSPCCaroline, Dorchester, Saint Mary's, Talbot, Wicomico93 min
Aug 20, 6:53 PM EDTFlash Flood Warning Considerable damage threatPHICaroline, Queen Anne's105 min
Aug 20, 6:55 PM EDTTornado WarningLWXSaint Mary's22 min
Aug 20, 6:57 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot48 min
Aug 20, 7:02 PM EDTSevere Thunderstorm WarningAKQDorchester, Wicomico43 min
Aug 20, 7:08 PM EDTTornado WarningLWXSaint Mary's16 min
Aug 20, 7:36 PM EDTSpecial Weather StatementAKQDorchester39 min
Aug 20, 7:46 PM EDTSpecial Weather StatementAKQWicomico44 min
Aug 20, 8:23 PM EDTTornado WarningAKQWicomico, Worcester27 min
Aug 20, 8:56 PM EDTFlash Flood WarningAKQSomerset, Wicomico, Worcester115 min
Aug 21, 1:51 AM EDTDense Fog AdvisoryLWXAllegany, Garrett6 hr
Aug 22, 11:38 AM EDTMesoscale DiscussionSPCGarrett3 hr
Aug 22, 1:56 PM EDTCoastal Flood AdvisoryLWXAnne Arundel16 hr
Aug 22, 2:27 PM EDTMesoscale DiscussionSPCAllegany2 hr
Aug 22, 7:00 PM EDTMesoscale DiscussionSPCAllegany, Garrett90 min
Aug 22, 8:57 PM EDTSevere Thunderstorm WarningLWXAllegany, Washington33 min
Aug 22, 11:35 PM EDTSevere Thunderstorm WarningLWXCalvert, Charles, Prince George's, Saint Mary's25 min
Aug 23, 12:18 AM EDTSpecial Weather StatementAKQDorchester, Somerset42 min
Aug 27, 1:52 PM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more113 min
Aug 27, 3:17 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more7 hr
Aug 27, 4:11 PM EDTSevere Thunderstorm WarningLWXBaltimore, Harford34 min
Aug 27, 4:45 PM EDTSevere Thunderstorm WarningLWXWashington45 min
Aug 27, 5:17 PM EDTSevere Thunderstorm WarningLWXWashington28 min
Aug 27, 5:40 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington50 min
Aug 27, 6:20 PM EDTSevere Thunderstorm WarningLWXFrederick, Montgomery, Washington40 min
Aug 27, 6:56 PM EDTSevere Thunderstorm WarningLWXCarroll, Frederick, Howard, Montgomery49 min
Aug 27, 7:26 PM EDTMesoscale DiscussionSPCBaltimore, Carroll, Frederick, Harford, Howard, Montgomery and 1 more94 min
Aug 27, 8:47 PM EDTSpecial Weather StatementLWXGarrett43 min
Aug 27, 9:36 PM EDTSpecial Weather StatementLWXGarrett39 min
Aug 28, 11:20 AM EDTSpecial Weather StatementAKQWicomico40 min
Aug 28, 12:26 PM EDTAreal Flood AdvisoryAKQWicomico2 min
Aug 28, 12:28 PM EDTFlash Flood WarningAKQSomerset, Wicomico98 min
Aug 31, 4:46 PM EDTAreal Flood AdvisoryAKQSomerset, Wicomico, Worcester100 min
Aug 31, 5:35 PM EDTSpecial Weather StatementAKQWicomico40 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 archive2025

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.