Weather alerts in Maryland, May 2010

108 weather alerts in May 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 May 2010. Tap one for its archive.

Alerts: 108
Warnings: 35
Watches: 13
Advisories: 8
Busiest day: May 28, 201030 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 2, 4:45 PM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more	60 min
May 2, 5:54 PM EDT	Special Weather Statement	LWX	Allegany	51 min
May 2, 5:58 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Carroll, Frederick, Howard, Montgomery, Washington	5 hr
May 2, 7:11 PM EDT	Special Weather Statement	LWX	Garrett	34 min
May 2, 8:27 PM EDT	Mesoscale Discussion	SPC	Allegany, Anne Arundel, Baltimore, Carroll, Cecil, Frederick and 8 more	63 min
May 3, 4:26 AM EDT	Special Weather Statement	LWX	Washington	49 min
May 3, 5:11 AM EDT	Special Weather Statement	LWX	Carroll, Frederick, Montgomery	49 min
May 7, 2:38 PM EDT	Wind Advisory	PBZ		30 hr
May 7, 3:24 PM EDT	Wind Advisory	LWX	Allegany, Anne Arundel, Baltimore, Carroll, Frederick, Prince George's and 2 more	29 hr
May 8, 2:36 AM EDT	Mesoscale Discussion	SPC	Garrett	54 min
May 8, 4:15 AM EDT	Wind Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	25 hr
May 8, 4:52 AM EDT	Special Weather Statement	LWX	Allegany	23 min
May 8, 5:25 AM EDT	Special Weather Statement	LWX	Washington	35 min
May 8, 12:50 PM EDT	Red Flag Warning	LWX	Anne Arundel, Baltimore, Carroll, Frederick, Prince George's, Washington and 1 more	7 hr
May 8, 2:02 PM EDT	Red Flag Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	6 hr
May 8, 3:03 PM EDT	Freeze Watch	LWX	Allegany	25 hr
May 8, 7:59 PM EDT	Fire Weather Watch	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	8 hr
May 8, 8:26 PM EDT	Fire Weather Watch	AKQ	Dorchester, Somerset, Wicomico, Worcester	8 hr
May 9, 4:02 AM EDT	Red Flag Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	16 hr
May 9, 4:14 AM EDT	Red Flag Warning	AKQ	Dorchester, Somerset, Wicomico, Worcester	16 hr
May 9, 3:51 PM EDT	Freeze Warning	LWX	Allegany	16 hr
May 9, 3:57 PM EDT	Fire Weather Watch	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	12 hr
May 10, 4:17 AM EDT	Red Flag Warning	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	16 hr
May 10, 2:32 PM EDT	Frost Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	17 hr
May 11, 11:13 AM EDT	Special Weather Statement	LWX	Allegany	32 min
May 11, 12:15 PM EDT	Special Weather Statement	LWX	Allegany	30 min
May 12, 2:20 PM EDT	Severe Thunderstorm Watch	SPC	Charles, Saint Mary's	6 hr
May 12, 4:50 PM EDT	Special Weather Statement	LWX	Anne Arundel	25 min
May 12, 5:00 PM EDT	Special Weather Statement	LWX	Howard	30 min
May 12, 5:26 PM EDT	Special Weather Statement	LWX	Howard, Montgomery	34 min
May 14, 11:56 AM EDT	Mesoscale Discussion	SPC	Allegany, Carroll, Frederick, Garrett, Howard, Montgomery and 1 more	2 hr
May 14, 2:29 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 9 more	7 hr
May 14, 3:43 PM EDT	Severe Thunderstorm Watch	SPC	Caroline, Cecil, Kent, Queen Anne's, Talbot	6 hr
May 14, 5:54 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	51 min
May 14, 5:57 PM EDT	Special Weather Statement	LWX	Allegany	33 min
May 14, 6:12 PM EDT	Special Weather Statement	LWX	Frederick	33 min
May 14, 6:17 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery, Prince George's	43 min
May 14, 6:20 PM EDT	Severe Thunderstorm Warning	LWX	Prince George's	40 min
May 14, 6:28 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	34 min
May 14, 6:35 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	55 min
May 14, 6:35 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 7 more	55 min
May 14, 6:41 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	64 min
May 14, 6:51 PM EDT	Severe Thunderstorm Warning	LWX	Charles, Prince George's	54 min
May 14, 6:57 PM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Baltimore, City of Baltimore	63 min
May 14, 7:00 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	60 min
May 14, 7:08 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent	67 min
May 14, 7:10 PM EDT	Tornado Warning	LWX	Anne Arundel	14 min
May 14, 7:11 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford, City of Baltimore	49 min
May 14, 7:24 PM EDT	Severe Thunderstorm Warning	LWX	Calvert, Charles, Prince George's, Saint Mary's	39 min
May 14, 7:34 PM EDT	Tornado Warning	LWX	Calvert, Charles, Prince George's, Saint Mary's	26 min
May 14, 7:48 PM EDT	Special Weather Statement	LWX	Harford	27 min
May 14, 7:58 PM EDT	Special Weather Statement	LWX	Prince George's	47 min
May 14, 8:04 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's	56 min
May 14, 8:10 PM EDT	Severe Thunderstorm Warning	LWX	Harford	35 min
May 14, 8:12 PM EDT	Severe Thunderstorm Warning	LWX	Prince George's	34 min
May 14, 8:36 PM EDT	Special Weather Statement	LWX	Anne Arundel	24 min
May 14, 8:47 PM EDT	Special Weather Statement	LWX	Prince George's	28 min
May 14, 8:49 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	56 min
May 14, 9:26 PM EDT	Severe Thunderstorm Warning	AKQ	Dorchester	49 min
May 14, 9:45 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	60 min
May 20, 3:13 AM EDT	Dense Fog Advisory	LWX	Allegany	6 hr
May 23, 2:11 AM EDT	Dense Fog Advisory	PBZ		7 hr
May 23, 5:12 AM EDT	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	2 hr
May 23, 9:50 AM EDT	River Flood Warning	LWX	Washington	33 hr
May 23, 12:24 PM EDT	Special Weather Statement	AKQ	Wicomico	51 min
May 23, 1:33 PM EDT	Special Weather Statement	AKQ	Somerset	57 min
May 27, 3:20 AM EDT	Flash Flood Watch	LWX	Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 3 more	24 hr
May 27, 11:28 AM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 7 more	92 min
May 27, 1:23 PM EDT	Severe Thunderstorm Watch	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more	8 hr
May 27, 4:13 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more	62 min
May 27, 4:51 PM EDT	Special Weather Statement	PHI	Cecil	54 min
May 27, 5:29 PM EDT	Special Weather Statement	LWX	Montgomery	31 min
May 27, 5:54 PM EDT	Special Weather Statement	CTP	Cecil	21 min
May 27, 5:59 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	22 min
May 27, 7:43 PM EDT	Special Weather Statement	LWX	Baltimore, Harford	32 min
May 27, 8:08 PM EDT	Mesoscale Discussion	SPC	Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more	97 min
May 27, 8:13 PM EDT	Special Weather Statement	LWX	Baltimore	47 min
May 27, 9:37 PM EDT	Special Weather Statement	LWX	Saint Mary's	23 min
May 27, 10:10 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	50 min
May 27, 10:30 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	60 min
May 27, 10:31 PM EDT	Special Weather Statement	LWX	Baltimore	44 min
May 27, 10:38 PM EDT	Severe Thunderstorm Warning	LWX	Montgomery	40 min
May 27, 10:46 PM EDT	Special Weather Statement	LWX	Harford	44 min
May 27, 10:58 PM EDT	Special Weather Statement	LWX	Montgomery	47 min
May 27, 11:13 PM EDT	Special Weather Statement	LWX	Baltimore	62 min
May 27, 11:22 PM EDT	Special Weather Statement	PHI	Cecil, Kent	53 min
May 27, 11:24 PM EDT	Special Weather Statement	LWX	Carroll	36 min
May 27, 11:26 PM EDT	Special Weather Statement	LWX	Harford	34 min
May 27, 11:45 PM EDT	Special Weather Statement	LWX	Anne Arundel, Howard, Prince George's, City of Baltimore	60 min
May 27, 11:57 PM EDT	Special Weather Statement	LWX	Baltimore, Carroll, Frederick, Harford	33 min
May 27, 11:57 PM EDT	Special Weather Statement	PHI	Queen Anne's	63 min
May 28, 12:33 AM EDT	Flash Flood Warning	LWX	Anne Arundel, Baltimore, City of Baltimore	102 min
May 28, 12:36 AM EDT	Special Weather Statement	LWX	Montgomery	24 min
May 28, 12:38 AM EDT	Special Weather Statement	PHI	Caroline, Talbot	52 min
May 28, 1:02 AM EDT	Special Weather Statement	LWX	Howard	43 min
May 28, 1:11 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	3 hr
May 28, 12:22 PM EDT	Special Weather Statement	PBZ	Garrett	53 min
May 28, 12:27 PM EDT	Special Weather Statement	PBZ	Garrett	63 min
May 28, 2:04 PM EDT	Special Weather Statement	PBZ	Garrett	56 min
May 28, 2:31 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Calvert, Charles, Prince George's, Saint Mary's and 1 more	21 hr
May 28, 2:36 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	39 min
May 28, 3:12 PM EDT	Severe Thunderstorm Watch	SPC	Allegany	5 hr
May 28, 3:15 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	45 min
May 28, 3:32 PM EDT	Special Weather Statement	PBZ	Garrett	58 min
May 28, 3:58 PM EDT	Flash Flood Warning	LWX	Allegany	2 hr
May 31, 12:39 PM EDT	Flash Flood Watch	LWX	Allegany	8 hr
May 31, 1:33 PM EDT	Special Weather Statement	PBZ	Garrett	57 min
May 31, 3:20 PM EDT	Flash Flood Watch	PBZ		12 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	24
Tornado Warning	2
Severe Thunderstorm Watch	6
Mesoscale Discussion	8
Special Weather Statement	44
Flooding
Flash Flood Warning	2
River Flood Warning	1
Flash Flood Watch	3
Areal Flood Advisory	1
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	1
Wind and dust
Wind Advisory	3
Fire
Red Flag Warning	5
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	2
Coast and beach
Coastal Flood Advisory	1

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.