Weather alerts in Maryland, May 2024

122 weather alerts in May 2024, 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 2024. Tap one for its archive.

Alerts: 122
Warnings: 47
Watches: 6
Advisories: 39
Busiest day: May 27, 202422 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.

Issued	Product	Office	Counties	Lasted
May 3, 9:04 AM EDT	Coastal Flood Watch	LWX	Anne Arundel, Saint Mary's	24 hr
May 3, 9:04 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more	48 hr
May 3, 2:21 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	38 hr
May 4, 2:58 AM EDT	Dense Fog Advisory	LWX	Allegany	5 hr
May 4, 4:10 AM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	50 hr
May 4, 9:06 AM EDT	Coastal Flood Warning	LWX	Anne Arundel, Saint Mary's	23 hr
May 4, 3:14 PM EDT	Coastal Flood Advisory	LWX	Charles	12 hr
May 5, 3:41 AM EDT	Coastal Flood Advisory	LWX	Saint Mary's	11 hr
May 5, 1:26 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	8 hr
May 5, 5:13 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Calvert, Charles, Saint Mary's	16 hr
May 6, 3:27 AM EDT	Dense Fog Advisory	LWX	Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 5 more	7 hr
May 7, 2:51 PM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	13 hr
May 7, 10:09 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Saint Mary's	13 hr
May 8, 5:32 AM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	25 hr
May 9, 2:39 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Saint Mary's	9 hr
May 9, 8:37 PM EDT	Flash Flood Warning	LWX	Garrett	3 hr
May 10, 1:04 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Calvert, Prince George's	17 min
May 10, 2:08 AM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico	52 min
May 10, 2:34 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Calvert, Saint Mary's	9 hr
May 10, 3:20 AM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	56 hr
May 10, 2:12 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	9 hr
May 10, 2:46 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more	53 hr
May 11, 2:42 AM EDT	Coastal Flood Warning	LWX	Saint Mary's	6 hr
May 11, 9:04 AM EDT	Coastal Flood Advisory	LWX	Saint Mary's	19 hr
May 11, 7:46 PM EDT	Special Weather Statement	CTP	Garrett	29 min
May 11, 7:46 PM EDT	Severe Thunderstorm Warning	LWX	Garrett	59 min
May 11, 9:22 PM EDT	Severe Thunderstorm Warning	LWX	Washington	23 min
May 11, 9:24 PM EDT	Tornado Warning	LWX	Washington	21 min
May 11, 9:42 PM EDT	Severe Thunderstorm Warning	LWX	Washington	33 min
May 11, 9:59 PM EDT	Special Weather Statement	CTP	Washington	31 min
May 12, 1:17 AM EDT	Coastal Flood Warning	LWX	Anne Arundel, Saint Mary's	14 hr
May 12, 7:53 AM EDT	Special Weather Statement	AKQ	Dorchester	37 min
May 12, 12:13 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore	20 min
May 12, 1:26 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	19 min
May 13, 4:16 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Harford, Saint Mary's	12 hr
May 14, 4:02 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	9 hr
May 15, 4:03 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Charles, Saint Mary's	11 hr
May 17, 9:19 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Calvert, Charles, Saint Mary's	23 hr
May 17, 12:58 PM EDT	Coastal Flood Advisory	AKQ	Dorchester	13 hr
May 18, 11:11 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	29 hr
May 18, 3:59 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Saint Mary's	14 hr
May 19, 2:16 PM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	15 hr
May 19, 9:48 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Saint Mary's	35 hr
May 20, 2:52 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Harford	32 hr
May 20, 5:04 AM EDT	Dense Fog Advisory	LWX	Allegany, Frederick, Montgomery, Washington	5 hr
May 20, 2:41 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	12 hr
May 21, 5:41 AM EDT	Dense Fog Advisory	LWX	Calvert, Saint Mary's	3 hr
May 21, 2:21 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	14 hr
May 21, 2:46 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	19 hr
May 22, 12:28 PM EDT	Mesoscale Discussion	SPC	Allegany, Garrett	2 hr
May 22, 2:52 PM EDT	Severe Thunderstorm Warning	LWX	Washington	23 min
May 22, 3:00 PM EDT	Severe Thunderstorm Watch	SPC	Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more	5 hr
May 22, 4:39 PM EDT	Mesoscale Discussion	SPC	Carroll, Frederick, Montgomery, Washington	2 hr
May 22, 10:50 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	11 hr
May 23, 6:20 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	25 min
May 23, 6:40 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	17 min
May 23, 8:11 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore	14 min
May 24, 9:05 AM EDT	Special Weather Statement	AKQ	Worcester	40 min
May 24, 9:17 AM EDT	Severe Thunderstorm Warning	AKQ	Worcester	43 min
May 24, 10:24 AM EDT	Special Weather Statement	AKQ	Worcester	36 min
May 24, 10:43 AM EDT	Flash Flood Warning	AKQ	Worcester	3 hr
May 25, 5:10 AM EDT	Dense Fog Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	4 hr
May 25, 7:08 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	112 min
May 25, 6:38 PM EDT	Severe Thunderstorm Warning	LWX	Washington	37 min
May 25, 7:14 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	31 min
May 25, 7:45 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	30 min
May 25, 8:08 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Howard	33 min
May 26, 4:37 AM EDT	Special Weather Statement	AKQ	Dorchester	23 min
May 26, 6:12 AM EDT	Special Weather Statement	AKQ	Somerset, Wicomico	48 min
May 26, 2:35 PM EDT	Coastal Flood Advisory	AKQ	Dorchester	16 hr
May 26, 2:54 PM EDT	Special Weather Statement	AKQ	Somerset	36 min
May 26, 3:25 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	17 min
May 26, 3:36 PM EDT	Special Weather Statement	AKQ	Wicomico	24 min
May 26, 4:01 PM EDT	Special Weather Statement	AKQ	Wicomico	29 min
May 26, 4:11 PM EDT	Areal Flood Advisory	AKQ	Wicomico	2 hr
May 26, 5:36 PM EDT	Mesoscale Discussion	SPC	Garrett	114 min
May 26, 6:08 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Garrett	8 hr
May 26, 7:22 PM EDT	Mesoscale Discussion	SPC	Allegany, Garrett	83 min
May 26, 7:31 PM EDT	Severe Thunderstorm Warning	LWX	Garrett	59 min
May 26, 8:17 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Garrett	58 min
May 26, 8:44 PM EDT	Severe Thunderstorm Watch	SPC	Charles, Frederick, Montgomery, Prince George's, Washington	3 hr
May 26, 9:05 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	55 min
May 26, 9:56 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Frederick, Washington	49 min
May 26, 10:18 PM EDT	Mesoscale Discussion	SPC	Carroll, Charles, Frederick, Howard, Montgomery, Prince George's and 2 more	87 min
May 26, 10:38 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Washington	37 min
May 27, 2:15 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Harford	12 hr
May 27, 11:53 AM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more	2 hr
May 27, 1:42 PM EDT	Severe Thunderstorm Watch	SPC	Caroline, Kent, Queen Anne's, Talbot	7 hr
May 27, 3:39 PM EDT	Tornado Watch	SPC	Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 11 more	7 hr
May 27, 3:49 PM EDT	Severe Thunderstorm Warning	LWX	Washington	41 min
May 27, 4:16 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	59 min
May 27, 4:49 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Charles, Dorchester, Howard and 8 more	86 min
May 27, 5:38 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Howard, Montgomery	37 min
May 27, 6:10 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, Howard	35 min
May 27, 6:16 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Howard, Montgomery	44 min
May 27, 6:46 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	4 hr
May 27, 6:51 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	39 min
May 27, 6:55 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Carroll, Harford, Howard, City of Baltimore	65 min
May 27, 7:28 PM EDT	Flash Flood Warning	LWX	Baltimore, Howard, City of Baltimore	2 hr
May 27, 7:40 PM EDT	Severe Thunderstorm Warning	LWX	Howard, Montgomery, Prince George's	50 min
May 27, 7:40 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Harford and 7 more	2 hr
May 27, 8:01 PM EDT	Flash Flood Warning Considerable damage threat	LWX	Baltimore, Howard, City of Baltimore	86 min
May 27, 8:09 PM EDT	Tornado Warning	LWX	Anne Arundel, Howard, Prince George's	21 min
May 27, 8:11 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore	49 min
May 27, 8:33 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Calvert, Charles, Prince George's	42 min
May 27, 9:24 PM EDT	Areal Flood Warning	LWX	Howard	2 hr
May 27, 9:27 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	48 min
May 27, 9:38 PM EDT	Special Weather Statement	AKQ	Dorchester	37 min
May 27, 10:12 PM EDT	Special Weather Statement	AKQ	Dorchester	33 min
May 27, 10:13 PM EDT	Special Weather Statement	AKQ	Dorchester	47 min
May 28, 2:32 AM EDT	Coastal Flood Advisory	LWX	Saint Mary's	5 hr
May 28, 3:48 AM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	6 hr
May 28, 8:19 PM EDT	Special Weather Statement	AKQ	Dorchester	26 min
May 29, 4:03 PM EDT	Severe Thunderstorm Warning	LWX	Calvert	27 min
May 29, 4:19 PM EDT	Special Weather Statement	AKQ	Dorchester	41 min
May 29, 4:29 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	31 min
May 29, 4:32 PM EDT	Severe Thunderstorm Warning	AKQ	Dorchester	43 min
May 29, 4:55 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	50 min
May 29, 5:15 PM EDT	Severe Thunderstorm Warning	LWX	Washington	30 min
May 29, 5:16 PM EDT	Special Weather Statement	AKQ	Dorchester	44 min
May 29, 5:52 PM EDT	Special Weather Statement	AKQ	Somerset	53 min
May 30, 2:02 PM EDT	Frost Advisory	LWX		18 hr

By product

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

Product	Alerts
Severe storms
Severe Thunderstorm Warning	37
Tornado Warning	2
Severe Thunderstorm Watch	4
Tornado Watch	1
Mesoscale Discussion	8
Special Weather Statement	18
Flooding
Areal Flood Warning	1
Flash Flood Warning	4
Areal Flood Advisory	1
Cold
Frost Advisory	1
Fog and smoke
Dense Fog Advisory	5
Coast and beach
Coastal Flood Warning	3
Coastal Flood Watch	1
Coastal Flood Advisory	32
Coastal Flood Statement	4

By county

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

Nearby

Alerts in force now Tornadoes on record The radar archive 2023 2025

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.