Weather alerts in Maryland, October 2021

90 weather alerts in October 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 October 2021. Tap one for its archive.

Alerts: 90
Warnings: 20
Watches: 10
Advisories: 38
Busiest day: October 28, 202113 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
Oct 1, 2:50 PM EDT	Beach Hazards Statement	AKQ	Worcester	29 hr
Oct 2, 8:05 PM EDT	Beach Hazards Statement	AKQ	Worcester	19 hr
Oct 3, 3:33 AM EDT	Dense Fog Advisory	PHI	Kent	6 hr
Oct 3, 5:00 AM EDT	Dense Fog Advisory	LWX	Baltimore, Cecil, Harford, City of Baltimore	6 hr
Oct 4, 4:44 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Charles and 9 more	2 hr
Oct 5, 12:37 AM EDT	Dense Fog Advisory	LWX	Allegany, Baltimore, Carroll, Frederick, Montgomery, Washington	9 hr
Oct 5, 2:22 PM EDT	Special Weather Statement	AKQ	Dorchester, Wicomico, Worcester	68 min
Oct 5, 3:33 PM EDT	Special Weather Statement	AKQ	Wicomico, Worcester	42 min
Oct 5, 3:39 PM EDT	Areal Flood Advisory	AKQ	Wicomico	2 hr
Oct 5, 4:26 PM EDT	Special Weather Statement	AKQ	Worcester	49 min
Oct 5, 4:42 PM EDT	Severe Thunderstorm Warning	AKQ	Worcester	48 min
Oct 6, 1:45 AM EDT	Dense Fog Advisory	LWX	Allegany	9 hr
Oct 7, 12:33 AM EDT	Dense Fog Advisory	LWX	Allegany	8 hr
Oct 7, 1:39 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Saint Mary's	9 hr
Oct 8, 2:27 AM EDT	Dense Fog Advisory	LWX	Allegany	7 hr
Oct 8, 9:01 AM EDT	Dense Fog Advisory	LWX	Allegany	119 min
Oct 8, 2:42 PM EDT	Coastal Flood Advisory	LWX	Saint Mary's	2 hr
Oct 8, 4:00 PM EDT	Beach Hazards Statement	AKQ	Worcester	4 days
Oct 8, 4:00 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico, Worcester	43 hr
Oct 9, 10:36 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Charles, Saint Mary's, City of Baltimore	14 hr
Oct 9, 5:00 PM EDT	Coastal Flood Statement	AKQ	Worcester	9 hr
Oct 9, 5:00 PM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	3 days
Oct 9, 8:07 PM EDT	Coastal Flood Watch	LWX	Saint Mary's	7 hr
Oct 9, 9:50 PM EDT	High Surf Advisory	AKQ	Worcester	42 hr
Oct 9, 11:31 PM EDT	Coastal Flood Advisory	LWX	Saint Mary's	8 hr
Oct 10, 3:00 AM EDT	Coastal Flood Warning	LWX	Saint Mary's	18 hr
Oct 10, 5:20 AM EDT	Coastal Flood Warning	AKQ	Dorchester, Somerset, Wicomico	39 hr
Oct 10, 2:29 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more	33 hr
Oct 10, 8:58 PM EDT	Coastal Flood Watch	LWX	Saint Mary's	6 hr
Oct 11, 3:18 AM EDT	Coastal Flood Watch	LWX	Anne Arundel	12 hr
Oct 11, 3:18 AM EDT	Coastal Flood Warning	LWX	Saint Mary's	19 hr
Oct 11, 3:18 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Saint Mary's, City of Baltimore	48 hr
Oct 11, 2:53 PM EDT	Coastal Flood Watch	LWX	Anne Arundel, Saint Mary's	24 hr
Oct 11, 2:53 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel	13 hr
Oct 11, 4:13 PM EDT	High Surf Advisory	AKQ	Worcester	10 hr
Oct 13, 3:38 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Saint Mary's, City of Baltimore	25 hr
Oct 13, 3:53 AM EDT	Dense Fog Advisory	LWX	Frederick, Montgomery, Washington	7 hr
Oct 13, 6:15 AM EDT	Coastal Flood Statement	AKQ	Dorchester	17 hr
Oct 14, 2:36 AM EDT	Dense Fog Advisory	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more	7 hr
Oct 14, 3:16 AM EDT	Dense Fog Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	3 hr
Oct 15, 3:11 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Harford, Saint Mary's and 1 more	30 hr
Oct 16, 4:53 AM EDT	Coastal Flood Statement	AKQ	Somerset, Wicomico	9 hr
Oct 16, 4:53 AM EDT	Coastal Flood Advisory	AKQ	Dorchester	11 hr
Oct 16, 1:50 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Cecil, Harford, Howard, Kent and 3 more	115 min
Oct 16, 3:21 PM EDT	Severe Thunderstorm Warning	LWX	Cecil	28 min
Oct 16, 4:23 PM EDT	Special Weather Statement	AKQ	Dorchester	52 min
Oct 16, 4:52 PM EDT	Special Weather Statement	AKQ	Somerset, Wicomico	38 min
Oct 16, 5:32 PM EDT	Special Weather Statement	AKQ	Somerset	28 min
Oct 16, 6:02 PM EDT	Special Weather Statement	AKQ	Worcester	28 min
Oct 16, 7:10 PM EDT	Coastal Flood Statement	AKQ	Dorchester, Somerset, Wicomico	6 hr
Oct 25, 5:06 PM EDT	Special Weather Statement	PHI	Talbot	39 min
Oct 25, 5:42 PM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	48 min
Oct 25, 5:44 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	46 min
Oct 25, 5:50 PM EDT	Flash Flood Watch	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore	5 hr
Oct 25, 6:26 PM EDT	Severe Thunderstorm Watch	SPC	Calvert, Charles, Saint Mary's	4 hr
Oct 25, 6:35 PM EDT	Severe Thunderstorm Warning	LWX	Cecil, Harford	40 min
Oct 25, 6:41 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more	2 hr
Oct 25, 8:13 PM EDT	Mesoscale Discussion	SPC	Saint Mary's	92 min
Oct 25, 8:32 PM EDT	Areal Flood Warning	LWX	Montgomery, Prince George's	7 hr
Oct 25, 9:50 PM EDT	Areal Flood Warning	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore	115 min
Oct 25, 9:53 PM EDT	Areal Flood Warning	LWX	Charles, Prince George's	4 hr
Oct 25, 11:51 PM EDT	Areal Flood Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	6 hr
Oct 26, 2:55 AM EDT	Wind Advisory	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 7 more	21 hr
Oct 27, 8:31 AM EDT	Coastal Flood Advisory	AKQ	Worcester	59 hr
Oct 27, 10:50 AM EDT	Coastal Flood Watch	LWX	Anne Arundel, Baltimore, Calvert, Cecil, Charles, Harford and 3 more	29 hr
Oct 27, 3:30 PM EDT	Coastal Flood Watch	AKQ	Dorchester, Somerset, Wicomico, Worcester	24 hr
Oct 27, 5:08 PM EDT	Coastal Flood Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	34 hr
Oct 27, 9:31 PM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	13 hr
Oct 28, 1:06 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Saint Mary's, City of Baltimore	15 hr
Oct 28, 3:22 AM EDT	Coastal Flood Watch	PHI	Caroline, Kent, Queen Anne's, Talbot	15 hr
Oct 28, 3:23 AM EDT	Wind Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	45 hr
Oct 28, 4:02 AM EDT	Wind Advisory	AKQ	Worcester	39 hr
Oct 28, 4:29 AM EDT	Coastal Flood Warning	LWX	Anne Arundel, Baltimore, Calvert, Cecil, Charles, Harford and 3 more	72 hr
Oct 28, 4:29 AM EDT	Coastal Flood Advisory	LWX	Cecil, Harford	12 hr
Oct 28, 10:58 AM EDT	Coastal Flood Warning	AKQ	Dorchester, Somerset, Wicomico, Worcester	71 hr
Oct 28, 2:07 PM EDT	Flood Watch	LWX	Anne Arundel, Baltimore, Howard, Montgomery, Prince George's, City of Baltimore	28 hr
Oct 28, 2:24 PM EDT	High Wind Warning	LWX	Calvert, Saint Mary's	24 hr
Oct 28, 2:24 PM EDT	Wind Advisory	LWX	Anne Arundel, Baltimore, Calvert, Cecil, Harford, Saint Mary's and 1 more	26 hr
Oct 28, 3:59 PM EDT	High Surf Advisory	AKQ	Worcester	33 hr
Oct 28, 6:20 PM EDT	Coastal Flood Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	55 hr
Oct 29, 12:34 PM EDT	Areal Flood Warning	LWX	Montgomery, Prince George's	9 hr
Oct 29, 3:36 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Calvert, Caroline, Dorchester, Queen Anne's, Saint Mary's and 4 more	2 hr
Oct 29, 4:29 PM EDT	Areal Flood Warning	LWX	Anne Arundel, Baltimore, Howard, City of Baltimore	5 hr
Oct 29, 5:30 PM EDT	Areal Flood Warning	LWX	Baltimore, Harford, City of Baltimore	4 hr
Oct 29, 7:21 PM EDT	Areal Flood Warning	LWX	Anne Arundel, Howard	5 hr
Oct 30, 1:42 AM EDT	Areal Flood Warning	LWX	Prince George's	15 hr
Oct 30, 4:22 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Cecil, Charles, Harford and 3 more	49 hr
Oct 30, 4:24 AM EDT	Coastal Flood Advisory	AKQ	Worcester	3 hr
Oct 30, 10:44 AM EDT	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	37 hr
Oct 30, 4:41 PM EDT	Coastal Flood Advisory	PHI	Caroline, Kent, Queen Anne's, Talbot	31 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	4
Severe Thunderstorm Watch	1
Mesoscale Discussion	5
Special Weather Statement	9
Flooding
Areal Flood Warning	9
Flash Flood Watch	1
Flood Watch	1
Areal Flood Advisory	1
Wind and dust
High Wind Warning	1
Wind Advisory	4
Fog and smoke
Dense Fog Advisory	10
Coast and beach
Coastal Flood Warning	6
Coastal Flood Watch	7
Coastal Flood Advisory	20
High Surf Advisory	3
Beach Hazards Statement	3
Coastal Flood Statement	5

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 2020 2022

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.