Weather alerts in Maryland, December 2010

75 weather alerts in December 2010, 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 December 2010. Tap one for its archive.

Alerts: 75
Warnings: 23
Watches: 9
Advisories: 28
Busiest day: December 1, 201031 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
Dec 1, 3:48 AM EST	Tornado Watch	SPC	Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 7 more	7 hr
Dec 1, 4:18 AM EST	Flash Flood Warning	LWX	Allegany, Washington	6 hr
Dec 1, 4:22 AM EST	Severe Thunderstorm Warning	LWX	Allegany, Washington	22 min
Dec 1, 4:29 AM EST	Flash Flood Warning	LWX	Washington	6 hr
Dec 1, 5:18 AM EST	Mesoscale Discussion	SPC	Saint Mary's, Somerset, Wicomico, Worcester	117 min
Dec 1, 5:25 AM EST	Coastal Flood Warning	LWX	Anne Arundel, Baltimore, City of Baltimore	9 hr
Dec 1, 5:44 AM EST	Severe Thunderstorm Warning	LWX	Frederick, Montgomery	26 min
Dec 1, 6:01 AM EST	Special Weather Statement	LWX	Montgomery, Prince George's	119 min
Dec 1, 6:12 AM EST	Tornado Watch	SPC	Dorchester, Somerset, Wicomico, Worcester	4 hr
Dec 1, 6:20 AM EST	Special Weather Statement	LWX	Harford	10 min
Dec 1, 6:37 AM EST	Severe Thunderstorm Warning	LWX	Calvert, Charles, Saint Mary's	53 min
Dec 1, 6:48 AM EST	Special Weather Statement	PHI	Cecil, Kent, Queen Anne's, Talbot	57 min
Dec 1, 6:55 AM EST	Severe Thunderstorm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	65 min
Dec 1, 7:01 AM EST	Areal Flood Advisory	PHI	Cecil	8 hr
Dec 1, 7:12 AM EST	Special Weather Statement	PHI	Caroline	63 min
Dec 1, 7:25 AM EST	Severe Thunderstorm Warning	LWX	Frederick, Montgomery, Washington	35 min
Dec 1, 7:45 AM EST	Coastal Flood Advisory	AKQ	Dorchester, Somerset, Wicomico	7 hr
Dec 1, 7:51 AM EST	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more	84 min
Dec 1, 8:03 AM EST	Severe Thunderstorm Warning	LWX	Baltimore, Carroll, Frederick, Howard, Montgomery	42 min
Dec 1, 8:08 AM EST	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	52 min
Dec 1, 8:36 AM EST	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's	54 min
Dec 1, 8:59 AM EST	Special Weather Statement	AKQ	Saint Mary's	61 min
Dec 1, 9:00 AM EST	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, Carroll, Harford, Howard, City of Baltimore	75 min
Dec 1, 9:28 AM EST	Tornado Warning	LWX	Charles, Prince George's	17 min
Dec 1, 9:31 AM EST	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's	59 min
Dec 1, 9:43 AM EST	Special Weather Statement	LWX	Anne Arundel, Calvert, Prince George's, Saint Mary's	62 min
Dec 1, 10:02 AM EST	Areal Flood Warning	LWX	Allegany, Washington	3 hr
Dec 1, 10:17 AM EST	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	43 min
Dec 1, 10:33 AM EST	Severe Thunderstorm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	42 min
Dec 1, 10:49 AM EST	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	56 min
Dec 1, 2:37 PM EST	River Flood Warning	LWX	Washington	26 hr
Dec 2, 10:27 AM EST	River Flood Warning	PHI	Cecil, Harford	45 hr
Dec 4, 1:24 PM EST	Winter Storm Watch	LWX	Allegany	14 hr
Dec 4, 2:16 PM EST	Winter Storm Watch	PBZ		13 hr
Dec 5, 3:05 AM EST	Winter Storm Warning	LWX	Allegany	63 hr
Dec 5, 3:14 AM EST	Winter Storm Warning	PBZ		64 hr
Dec 5, 11:11 AM EST	Wind Advisory	LWX	Allegany	15 hr
Dec 7, 4:37 PM EST	Wind Chill Advisory	LWX	Allegany	16 hr
Dec 10, 2:34 PM EST	Winter Storm Watch	PBZ		38 hr
Dec 10, 8:35 PM EST	Winter Storm Watch	LWX	Allegany	32 hr
Dec 11, 2:13 PM EST	Winter Weather Advisory	LWX	Allegany, Carroll, Frederick, Washington	22 hr
Dec 12, 3:15 AM EST	Winter Storm Warning	LWX	Allegany	59 hr
Dec 12, 3:43 AM EST	Winter Storm Warning	PBZ		63 hr
Dec 12, 2:12 PM EST	Areal Flood Advisory	PHI	Cecil, Kent, Queen Anne's	4 hr
Dec 13, 2:09 AM EST	Winter Weather Advisory	LWX	Anne Arundel, Baltimore, Carroll, Charles, Frederick, Prince George's and 1 more	7 hr
Dec 13, 3:08 AM EST	Wind Chill Advisory	PBZ		55 hr
Dec 13, 10:28 AM EST	Wind Advisory	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more	36 hr
Dec 13, 10:54 AM EST	Wind Chill Advisory	LWX	Allegany	46 hr
Dec 14, 3:52 AM EST	Winter Weather Advisory	LWX	Anne Arundel, Baltimore, Carroll, Frederick, Prince George's, City of Baltimore	5 hr
Dec 15, 2:21 PM EST	Winter Weather Advisory	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more	29 hr
Dec 15, 3:11 PM EST	Winter Weather Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	30 hr
Dec 16, 3:31 AM EST	Winter Weather Advisory	PBZ		15 hr
Dec 16, 3:45 AM EST	Winter Weather Advisory	PHI	Caroline, Queen Anne's, Talbot	8 hr
Dec 16, 11:00 AM EST	Mesoscale Discussion	SPC	Somerset	4 hr
Dec 16, 11:47 AM EST	Winter Weather Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	7 hr
Dec 23, 1:30 AM EST	Wind Advisory	LWX	Allegany, Frederick, Washington	17 hr
Dec 24, 3:51 PM EST	Winter Storm Watch	AKQ	Dorchester, Somerset, Wicomico, Worcester	24 hr
Dec 25, 3:09 AM EST	Winter Storm Watch	LWX	Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 3 more	13 hr
Dec 25, 4:16 AM EST	Winter Storm Watch	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	11 hr
Dec 25, 12:02 PM EST	Winter Storm Warning	AKQ	Dorchester, Somerset, Wicomico, Worcester	39 hr
Dec 25, 2:56 PM EST	Winter Weather Advisory	PBZ		52 hr
Dec 25, 3:24 PM EST	Winter Storm Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	38 hr
Dec 25, 3:42 PM EST	Winter Storm Warning	LWX	Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more	31 hr
Dec 25, 3:42 PM EST	Winter Weather Advisory	LWX	Allegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 3 more	48 hr
Dec 26, 3:26 AM EST	Coastal Flood Advisory	AKQ	Worcester	22 hr
Dec 26, 4:09 AM EST	Mesoscale Discussion	SPC	Somerset, Wicomico, Worcester	6 hr
Dec 26, 2:42 PM EST	Wind Advisory	LWX	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 5 more	30 hr
Dec 26, 3:36 PM EST	Blizzard Warning	AKQ	Somerset, Wicomico, Worcester	12 hr
Dec 26, 9:37 PM EST	Wind Chill Advisory	LWX	Allegany	14 hr
Dec 27, 3:13 AM EST	Winter Weather Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	6 hr
Dec 27, 4:14 AM EST	Wind Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	17 hr
Dec 27, 9:02 AM EST	Wind Advisory	AKQ	Dorchester, Somerset, Wicomico, Worcester	10 hr
Dec 27, 3:49 PM EST	Wind Chill Advisory	LWX	Allegany	17 hr
Dec 29, 10:30 PM EST	Freezing Rain Advisory	PBZ		13 hr
Dec 30, 6:54 AM EST	Freezing Rain Advisory	LWX	Allegany	5 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	8
Tornado Warning	1
Tornado Watch	2
Mesoscale Discussion	4
Special Weather Statement	11
Flooding
Areal Flood Warning	1
Flash Flood Warning	2
River Flood Warning	2
Areal Flood Advisory	2
Winter
Blizzard Warning	1
Winter Storm Warning	7
Winter Storm Watch	7
Freezing Rain Advisory	2
Winter Weather Advisory	11
Cold
Wind Chill Advisory	5
Wind and dust
Wind Advisory	6
Coast and beach
Coastal Flood Warning	1
Coastal Flood Advisory	2

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 2009 2011

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.