Weather alerts in Maryland, May 2025

191 weather alerts in May 2025, 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 2025. Tap one for its archive.

Alerts: 191
Warnings: 118
Watches: 20
Advisories: 14
Busiest day: May 16, 202538 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 1, 2:43 PM EDT	Mesoscale Discussion	SPC	Garrett	92 min
May 1, 3:48 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Garrett	42 min
May 1, 4:05 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	25 min
May 1, 4:22 PM EDT	Mesoscale Discussion	SPC	Allegany	83 min
May 1, 4:27 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	48 min
May 1, 5:13 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	47 min
May 1, 6:39 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	26 min
May 3, 2:50 PM EDT	Mesoscale Discussion	SPC	Allegany, Baltimore, Carroll, Frederick, Harford, Howard and 3 more	115 min
May 3, 3:27 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Howard, Montgomery	48 min
May 3, 3:58 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, Howard, Montgomery	47 min
May 3, 4:33 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, Harford, City of Baltimore	42 min
May 3, 4:36 PM EDT	Severe Thunderstorm Watch	SPC	Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more	5 hr
May 3, 4:54 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	51 min
May 3, 5:04 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	41 min
May 3, 5:39 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Washington	66 min
May 3, 5:41 PM EDT	Severe Thunderstorm Warning	LWX	Cecil, Harford	64 min
May 3, 5:51 PM EDT	Severe Thunderstorm Watch	SPC	Kent	4 hr
May 3, 6:46 PM EDT	Mesoscale Discussion	SPC	Baltimore, Carroll, Cecil, Harford, Howard, City of Baltimore	59 min
May 4, 7:12 PM EDT	Mesoscale Discussion	SPC	Garrett	2 hr
May 5, 2:16 PM EDT	Mesoscale Discussion	SPC	Allegany, Carroll, Frederick, Garrett, Howard, Montgomery and 2 more	119 min
May 5, 5:29 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Calvert, Carroll, Charles, Dorchester, Frederick and 7 more	2 hr
May 5, 5:44 PM EDT	Severe Thunderstorm Warning	LWX	Charles	46 min
May 5, 5:52 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	23 min
May 5, 6:01 PM EDT	Severe Thunderstorm Watch	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 12 more	5 hr
May 5, 6:20 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	25 min
May 5, 6:20 PM EDT	Severe Thunderstorm Warning	LWX	Charles	25 min
May 5, 6:27 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	48 min
May 5, 7:19 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	26 min
May 5, 7:38 PM EDT	Flash Flood Warning	LWX	Frederick	3 hr
May 5, 8:11 PM EDT	Mesoscale Discussion	SPC	Allegany, Frederick, Garrett, Montgomery, Washington	2 hr
May 5, 10:34 PM EDT	Areal Flood Warning	LWX	Frederick	3 hr
May 9, 12:20 AM EDT	Special Weather Statement	AKQ	Somerset	40 min
May 9, 1:26 AM EDT	Special Weather Statement	AKQ	Somerset, Wicomico	49 min
May 9, 1:46 AM EDT	Severe Thunderstorm Warning	AKQ	Somerset, Wicomico, Worcester	44 min
May 9, 2:22 AM EDT	Severe Thunderstorm Warning	AKQ	Worcester	23 min
May 9, 3:22 AM EDT	Frost Advisory	LWX	Garrett	29 hr
May 12, 3:10 AM EDT	Flood Watch	LWX	Allegany, Frederick, Garrett, Montgomery, Washington	47 hr
May 13, 11:37 AM EDT	River Flood Watch	LWX	Washington	10 hr
May 13, 11:37 AM EDT	River Flood Watch	LWX	Montgomery	21 days
May 13, 12:23 PM EDT	Areal Flood Warning	LWX	Allegany, Garrett	37 min
May 13, 12:41 PM EDT	Areal Flood Warning	LWX	Allegany, Garrett	16 min
May 13, 12:57 PM EDT	Flash Flood Warning	LWX	Allegany, Garrett	5 hr
May 13, 1:00 PM EDT	Flash Flood Warning Considerable damage threat	LWX	Allegany, Garrett	5 hr
May 13, 1:52 PM EDT	Flash Flood Warning	LWX	Garrett	4 hr
May 13, 2:20 PM EDT	River Flood Warning	LWX	Allegany	19 hr
May 13, 2:49 PM EDT	Flash Flood Warning EmergencyCatastrophic damage threat	LWX	Allegany	3 hr
May 13, 3:59 PM EDT	River Flood Warning	LWX	Allegany	24 hr
May 13, 4:00 PM EDT	River Flood Warning	LWX	Washington	46 hr
May 13, 4:02 PM EDT	River Flood Warning	LWX	Allegany	37 hr
May 13, 4:06 PM EDT	River Flood Watch	LWX	Washington	56 hr
May 13, 4:09 PM EDT	River Flood Watch	LWX	Frederick	21 days
May 13, 4:09 PM EDT	River Flood Watch	LWX	Montgomery	18 hr
May 13, 4:09 PM EDT	River Flood Warning	LWX	Allegany	21 days
May 13, 5:23 PM EDT	Areal Flood Warning	LWX	Allegany	6 hr
May 13, 5:27 PM EDT	Areal Flood Warning	LWX	Garrett	6 hr
May 13, 6:00 PM EDT	Areal Flood Warning	LWX	Allegany, Garrett	6 hr
May 13, 6:07 PM EDT	Areal Flood Warning	LWX	Allegany, Garrett	32 hr
May 13, 8:25 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Harford, City of Baltimore	18 hr
May 13, 8:35 PM EDT	Areal Flood Warning	LWX	Allegany, Washington	5 hr
May 13, 9:29 PM EDT	River Flood Warning	LWX	Washington	61 hr
May 13, 10:01 PM EDT	Areal Flood Warning	LWX	Washington	31 hr
May 13, 11:40 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	6 hr
May 14, 4:35 AM EDT	River Flood Watch	LWX	Washington	5 hr
May 14, 4:35 AM EDT	River Flood Warning	LWX	Frederick	56 hr
May 14, 4:35 AM EDT	River Flood Warning	LWX	Montgomery	67 hr
May 14, 4:35 AM EDT	River Flood Warning	LWX	Washington	42 hr
May 14, 5:26 AM EDT	Areal Flood Warning	LWX	Allegany, Washington	9 hr
May 14, 6:37 AM EDT	Areal Flood Warning	LWX	Washington	6 hr
May 14, 9:29 AM EDT	River Flood Warning	LWX	Washington	31 hr
May 14, 10:37 AM EDT	River Flood Warning	LWX	Washington	27 hr
May 14, 10:37 AM EDT	River Flood Warning	LWX	Montgomery	52 hr
May 14, 11:38 AM EDT	Flood Watch	LWX	Allegany, Garrett	12 hr
May 14, 12:29 PM EDT	Areal Flood Warning	LWX	Allegany	6 hr
May 16, 5:38 AM EDT	Dense Fog Advisory	LWX	Cecil, Harford	3 hr
May 16, 9:46 AM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Dorchester and 9 more	119 min
May 16, 10:06 AM EDT	Severe Thunderstorm Watch	SPC	Caroline, Kent, Queen Anne's, Talbot	6 hr
May 16, 1:41 PM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Garrett and 6 more	3 hr
May 16, 2:32 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Garrett	58 min
May 16, 2:32 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 10 more	5 hr
May 16, 2:37 PM EDT	Severe Thunderstorm Warning	AKQ	Worcester	53 min
May 16, 3:24 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	36 min
May 16, 3:28 PM EDT	Severe Thunderstorm Watch	SPC	Dorchester, Somerset, Wicomico, Worcester	5 hr
May 16, 3:30 PM EDT	Special Weather Statement	AKQ	Worcester	45 min
May 16, 3:33 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	27 min
May 16, 3:53 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	52 min
May 16, 3:58 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	47 min
May 16, 4:00 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	32 min
May 16, 4:14 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 5 more	2 hr
May 16, 4:21 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	24 min
May 16, 4:30 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	45 min
May 16, 4:34 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick, Howard, Montgomery, Washington	41 min
May 16, 4:36 PM EDT	Severe Thunderstorm Watch	SPC	Caroline, Kent, Queen Anne's, Talbot	3 hr
May 16, 4:38 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery, Prince George's	37 min
May 16, 5:10 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	35 min
May 16, 5:12 PM EDT	Severe Thunderstorm Warning Considerable damage threat	LWX	Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 3 more	63 min
May 16, 5:14 PM EDT	Severe Thunderstorm Warning Considerable damage threat	LWX	Anne Arundel, Baltimore, Frederick, Howard, Montgomery, Prince George's and 1 more	63 min
May 16, 5:19 PM EDT	Severe Thunderstorm Warning Destructive damage threat	LWX	Montgomery	26 min
May 16, 5:27 PM EDT	Severe Thunderstorm Warning Destructive damage threat	LWX	Baltimore, Carroll	33 min
May 16, 5:40 PM EDT	Severe Thunderstorm Warning Considerable damage threat	LWX	Anne Arundel, Calvert, Charles, Prince George's	50 min
May 16, 5:40 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	50 min
May 16, 5:43 PM EDT	Severe Thunderstorm Warning	LWX	Calvert, Charles, Prince George's, Saint Mary's	47 min
May 16, 5:47 PM EDT	Tornado Warning	LWX	Baltimore, City of Baltimore	28 min
May 16, 5:51 PM EDT	Severe Thunderstorm Warning Considerable damage threat	LWX	Baltimore, Cecil, Harford, City of Baltimore	54 min
May 16, 5:59 PM EDT	Tornado Warning	LWX	Baltimore, City of Baltimore	13 min
May 16, 6:04 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Caroline, Kent, Queen Anne's, Talbot	56 min
May 16, 6:08 PM EDT	Severe Thunderstorm Warning Considerable damage threat	AKQ	Dorchester, Somerset, Wicomico	52 min
May 16, 6:11 PM EDT	Severe Thunderstorm Warning Destructive damage threat	PHI	Caroline, Kent, Queen Anne's, Talbot	64 min
May 16, 6:13 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Calvert, Caroline, Cecil, Dorchester, Harford and 8 more	92 min
May 16, 6:52 PM EDT	Severe Thunderstorm Warning Considerable damage threat	AKQ	Dorchester, Somerset, Wicomico, Worcester	48 min
May 16, 6:53 PM EDT	Tornado Warning	AKQ	Dorchester, Wicomico	16 min
May 16, 6:56 PM EDT	Tornado Warning	PHI	Caroline	34 min
May 17, 1:34 AM EDT	Severe Thunderstorm Warning	LWX	Allegany, Garrett	26 min
May 17, 3:27 AM EDT	Special Weather Statement	AKQ	Wicomico	33 min
May 17, 4:32 AM EDT	Special Weather Statement	AKQ	Worcester	28 min
May 17, 7:23 AM EDT	Special Weather Statement	AKQ	Somerset	52 min
May 20, 1:10 PM EDT	Flood Watch	LWX	Allegany, Garrett	19 hr
May 21, 12:33 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more	30 hr
May 21, 8:28 AM EDT	Flood Watch	LWX	Allegany, Garrett	12 hr
May 21, 1:30 PM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	12 hr
May 21, 9:12 PM EDT	Coastal Flood Warning	LWX	Anne Arundel	8 hr
May 22, 1:45 AM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	6 hr
May 22, 6:13 AM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	7 hr
May 22, 7:59 AM EDT	Beach Hazards Statement	AKQ	Worcester	12 hr
May 22, 7:59 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Calvert, Charles, Saint Mary's	10 hr
May 22, 1:27 PM EDT	Mesoscale Discussion	SPC	Calvert, Dorchester, Saint Mary's, Somerset, Wicomico, Worcester	2 hr
May 22, 2:41 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico, Worcester	12 hr
May 22, 4:06 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Calvert, Prince George's	22 min
May 22, 4:19 PM EDT	Severe Thunderstorm Warning	PHI	Talbot	41 min
May 22, 4:59 PM EDT	Special Weather Statement	AKQ	Dorchester	46 min
May 22, 5:42 PM EDT	Special Weather Statement	AKQ	Wicomico	48 min
May 22, 6:50 PM EDT	Severe Thunderstorm Warning	LWX	Saint Mary's	14 min
May 22, 7:18 PM EDT	Special Weather Statement	AKQ	Somerset	42 min
May 22, 7:28 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Calvert, Charles	10 hr
May 22, 7:30 PM EDT	Severe Thunderstorm Warning	AKQ	Somerset, Worcester	30 min
May 23, 6:39 AM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	7 hr
May 24, 1:12 PM EDT	Frost Advisory	LWX	Garrett	20 hr
May 27, 8:10 PM EDT	Beach Hazards Statement	AKQ	Worcester	24 hr
May 28, 2:25 PM EDT	Coastal Flood Advisory	LWX	Charles	4 hr
May 29, 8:31 PM EDT	Flood Watch	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 10 more	27 hr
May 30, 1:37 PM EDT	Tornado Watch	SPC	Allegany, Garrett	6 hr
May 30, 3:49 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more	116 min
May 30, 5:01 PM EDT	Tornado Watch	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more	7 hr
May 30, 6:40 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Howard, Montgomery, Prince George's, City of Baltimore	2 hr
May 30, 6:47 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	32 min
May 30, 6:47 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Howard, Montgomery, Prince George's	43 min
May 30, 6:51 PM EDT	Tornado Warning	LWX	Charles, Prince George's	24 min
May 30, 6:54 PM EDT	Tornado Warning	LWX	Anne Arundel, Howard, Montgomery, Prince George's	36 min
May 30, 7:05 PM EDT	Severe Thunderstorm Warning	LWX	Allegany, Washington	55 min
May 30, 7:14 PM EDT	Tornado Warning	LWX	Prince George's	31 min
May 30, 7:25 PM EDT	Tornado Warning	LWX	Prince George's	35 min
May 30, 7:28 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery, Washington	47 min
May 30, 7:28 PM EDT	Tornado Warning	LWX	Howard, Montgomery, Prince George's	32 min
May 30, 7:44 PM EDT	Tornado Warning	LWX	Anne Arundel, Calvert, Prince George's	31 min
May 30, 7:49 PM EDT	Tornado Warning	LWX	Charles, Saint Mary's	26 min
May 30, 7:54 PM EDT	Flash Flood Warning	LWX	Howard, Montgomery, Prince George's	3 hr
May 30, 8:01 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	29 min
May 30, 8:03 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Prince George's	27 min
May 30, 8:14 PM EDT	Flash Flood Warning	LWX	Anne Arundel, Baltimore, Howard, City of Baltimore	3 hr
May 30, 8:32 PM EDT	Tornado Warning	LWX	Calvert, Saint Mary's	28 min
May 30, 8:37 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 9 more	113 min
May 30, 8:40 PM EDT	Wind Advisory	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 10 more	9 hr
May 30, 8:44 PM EDT	Areal Flood Warning	LWX	Garrett	5 hr
May 30, 8:47 PM EDT	Tornado Warning	LWX	Anne Arundel, Howard, Montgomery, Prince George's	28 min
May 30, 8:57 PM EDT	Wind Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	10 hr
May 30, 8:57 PM EDT	Tornado Warning	PHI	Kent, Queen Anne's	33 min
May 30, 9:02 PM EDT	Special Weather Statement	AKQ	Dorchester	43 min
May 30, 9:04 PM EDT	Wind Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	10 hr
May 30, 9:33 PM EDT	Tornado Warning	PHI	Kent, Queen Anne's	27 min
May 30, 9:42 PM EDT	Special Weather Statement	AKQ	Dorchester	48 min
May 30, 9:43 PM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	9 hr
May 30, 9:47 PM EDT	Areal Flood Warning	LWX	Anne Arundel	101 min
May 30, 10:26 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	49 min
May 30, 10:29 PM EDT	Severe Thunderstorm Warning	LWX	Cecil	46 min
May 30, 10:53 PM EDT	Tornado Warning	LWX	Cecil	16 min
May 31, 11:52 AM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 12 more	2 hr
May 31, 1:17 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	43 min
May 31, 1:23 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Calvert, Prince George's	22 min
May 31, 1:29 PM EDT	Special Weather Statement	AKQ	Dorchester	31 min
May 31, 1:30 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	45 min
May 31, 1:42 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	48 min
May 31, 1:57 PM EDT	Special Weather Statement	AKQ	Dorchester	33 min
May 31, 2:00 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	45 min
May 31, 2:20 PM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico	40 min
May 31, 2:24 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	36 min
May 31, 2:48 PM EDT	Special Weather Statement	AKQ	Worcester	27 min
May 31, 3:04 PM EDT	Severe Thunderstorm Warning	AKQ	Wicomico, Worcester	26 min
May 31, 3:17 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Prince George's	28 min
May 31, 3:31 PM EDT	Special Weather Statement	AKQ	Somerset	44 min
May 31, 3:41 PM EDT	Severe Thunderstorm Warning	AKQ	Somerset	34 min
May 31, 3:56 PM EDT	Severe Thunderstorm Warning	AKQ	Somerset, Worcester	34 min
May 31, 4:16 PM EDT	Severe Thunderstorm Warning	AKQ	Worcester	29 min

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	68
Tornado Warning	16
Severe Thunderstorm Watch	7
Tornado Watch	2
Mesoscale Discussion	17
Special Weather Statement	16
Flooding
Areal Flood Warning	14
Flash Flood Warning	7
River Flood Warning	12
Flood Watch	5
River Flood Watch	6
Cold
Frost Advisory	2
Wind and dust
Wind Advisory	3
Fog and smoke
Dense Fog Advisory	1
Coast and beach
Coastal Flood Warning	1
Coastal Flood Advisory	8
Beach Hazards Statement	2
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 2024 2026

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.