PAGER - M 5.8 - VIRGINIA

Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.

Earthquake Shaking Alert Level: ORANGE

Download Alert PDF What's this?Tuesday, August 23rd, 2011 at 17:51:04 UTC (13:51:04 local)Location: 37.9° N, 77.9° WDepth: 6kmEvent Id: US082311AAlert Version: 3Created: 2 hours, 5 minutes after earthquake.

Alert Information

Orange alert level for economic losses. Significant damage is likely and the disaster is potentially widespread. Estimated economic losses are less than 1% of GDP of the United States. Past events with this alert level have required a regional or national level response. Green alert level for shaking-related fatalities. There is a low likelihood of casualties.

Estimated Fatalities

ESTIMATED FATALITY ALERT: GREEN
ESTIMATED FATALITIES (LEVEL)	Probability (%)
0 (GREEN)	78
1 to 9 (YELLOW)	22
10 to 99 (YELLOW)	0
100 to 999 (ORANGE)	0
1 to 10 thousand (RED)	0
10 to 100 thousand (RED)	0
100 thousand + (RED)	0

Estimated Economic Losses

ESTIMATED ECONOMIC ALERT: ORANGE
ESTIMATED VALUE IN USD (LEVEL)	Probability (%)
0 to 1 million (GREEN)	1
1 to 10 million (YELLOW)	9
10 to 100 million (YELLOW)	26
100 million to 1 billion (ORANGE)	35
1 to 10 billion (RED)	21
10 to 100 billion (RED)	6
100 billion + (RED)	1

Detailed Information

Estimated Population Exposed to Earthquake Shaking
Estimated Modified Mercalli Intensity		I	II-III	IV	V	VI	VII	VIII	IX	X
Est. Population Exposure		---*	19k*	9,627k*	2,285k	76k	23k	10k	0	0
Perceived Shaking		Not Felt	Weak	Light	Moderate	Strong	Very Strong	Severe	Violent	Extreme
Potential Structure Damage	Resistant	none	none	none	V. Light	Light	Moderate	Moderate/Heavy	Heavy	V. Heavy
Potential Structure Damage	Vulnerable	none	none	none	Light	Moderate	Moderate/Heavy	Heavy	V. Heavy	V. Heavy

*Estimated exposure only includes population within calculated shake map area

Population Exposure
Population per ~1 sq. km. from LandScan

Structure Information Summary

Overall, the population in this region resides in structures that are resistant to earthquake shaking, though some vulnerable structures exist.

Historical Earthquakes (with MMI)

Selected Cities Exposedfrom GeoNames Database of Cities with 1,000 or more residents.

MMI	City	Population
VII	Louisa	2k
VI	Gordonsville	2k
VI	Newington	21k
VI	Orange	4k
VI	Weber City	1k
VI	Lake Monticello	10k
V	Virginia Beach	425k
V	Washington	552k
IV	Richmond	191k
IV	Baltimore	611k
IV	Annapolis	36k

(k = x1,000)

Nearby Events in the EXPO-CAT Earthquake Catalog
#	Date/Time	Mag	Lat, Lon, Depth	Country	Max MMI (Exposed)	Deaths		Secondary Effects
#	Date/Time	Mag	Lat, Lon, Depth	Country	Max MMI (Exposed)	Shaking	Total	Secondary Effects
No historic events found within search parameters

MMI	City	Population
VII	Louisa	2k
VI	Gordonsville	2k
VI	Newington	21k
VI	Orange	4k
VI	Weber City	1k
VI	Lake Monticello	10k
V	Spotsylvania Courthouse	5k
V	Indian Head	3k
V	Potomac Heights	1k
V	Fort Hunt	13k
V	Hybla Valley	17k
V	Woodbridge	35k
V	Aquia Harbour	9k
V	Dale City	61k
V	Montclair	18k
V	Falmouth	4k
V	Fredericksburg	21k
V	Bowie	50k
V	Ashland	7k
V	Dundalk	62k
V	Essex	39k
V	Rosedale	20k
V	Colonial Beach	3k
V	Lorton	19k
V	Virginia Beach	425k
V	Burke	58k
V	Reston	61k
V	West Springfield	29k
V	Yorkshire	7k
V	Cabin John	2k
V	McLean	40k
V	Mitchellville	10k
V	Alexandria	127k
V	Belle Haven	6k
V	Culpeper	11k
V	Groveton	22k
V	Huntington	9k
V	Rose Hill	16k
V	Brooklyn Park	11k
V	Bull Run	15k
V	Loch Lomond	4k
V	Manassas	38k
V	Manassas Park	11k
V	Sudley	8k
V	West Gate	8k
V	Mechanicsville	36k
V	Riviera Beach	14k
V	Bryans Road	6k
V	Dahlgren	1k
V	Baileys Crossroads	20k
V	Dunn Loring	9k
V	Falls Church	10k
V	Idylwood	17k
V	Jefferson	28k
V	Lake Barcroft	9k
V	Mantua	8k
V	Merrifield	13k
V	Merrimac	2k
V	Pimmit Hills	6k
V	Seven Corners	10k
V	Vienna	15k
V	Crofton	25k
V	Accokeek	9k
V	Fort Washington	24k
V	Glenarden	7k
V	Glenn Dale	14k
V	Goddard	6k
V	Springdale	3k
V	Woodmore	8k
V	Wyndham	7k
V	Bennsville	8k
V	Highland Springs	16k
V	Aspen Hill	53k
V	Forest Glen	8k
V	Green Haven	19k
V	Kensington	2k
V	North Bethesda	44k
V	North Kensington	9k
V	Pasadena	13k
V	South Kensington	8k
V	Arden on the Severn	2k
V	Crownsville	2k
V	Herald Harbor	3k
V	Severna Park	30k
V	Washington	552k
V	North Potomac	26k
V	Potomac	45k
V	South Laurel	22k
V	Travilah	8k
IV	Ferndale	16k
IV	Linthicum	8k
IV	Pumphrey	5k
IV	Nokesville	1k
IV	Camp Springs	19k
IV	Clinton	30k
IV	Morningside	1k
IV	Temple Hills	8k
IV	Jessup	9k
IV	Chesapeake Beach	3k
IV	Fort George G Mead Junction	10k
IV	Montgomery Village	42k
IV	North Beach	2k
IV	Annandale	58k
IV	Fort Lee	8k
IV	Franconia	40k
IV	Lincolnia	17k
IV	North Springfield	9k
IV	Springfield	35k
IV	Forest Heights	3k
IV	Friendly	12k
IV	Glen Burnie	40k
IV	Hillcrest Heights	16k
IV	La Plata	8k
IV	Odenton	26k
IV	Severn	42k
IV	South Gate	30k
IV	Catonsville	43k
IV	Woodlawn	36k
IV	Crewe	2k
IV	Clarksburg	2k
IV	Germantown	65k
IV	East Highland Park	13k
IV	Montrose	7k
IV	Blackstone	4k
IV	Chamberlayne	4k
IV	Charlottesville	35k
IV	Tappahannock	2k
IV	Amherst	2k
IV	Warsaw	1k
IV	West Point	3k
IV	Beltsville	17k
IV	Calverton	13k
IV	Fairland	23k
IV	Greenbelt	22k
IV	Dumfries	5k
IV	Front Royal	15k
IV	Triangle	6k
IV	Victoria	2k
IV	Arbutus	21k
IV	Bethesda	53k
IV	Brookmont	3k
IV	Charlestown	1k
IV	Charlotte Hall	1k
IV	Chevy Chase	3k
IV	Chevy Chase Village	2k
IV	Friendship Village	5k
IV	Saint Charles	36k
IV	Somerset	1k
IV	Waldorf	27k
IV	Arlington	185k
IV	Fairfax	22k
IV	Oakton	32k
IV	Waverly	2k
IV	Bon Air	16k
IV	Crozet	3k
IV	Brandywine	1k
IV	Carney	30k
IV	Overlea	12k
IV	Parkville	31k
IV	Perry Hall	33k
IV	Prince Frederick	1k
IV	Rossville	13k
IV	Great Falls	10k
IV	Kilmarnock	1k
IV	Tysons Corner	22k
IV	Wolf Trap	15k
IV	Columbia	96k
IV	Damascus	12k
IV	South Hill	4k
IV	Verona	4k
IV	Wakefield	1k
IV	Adelphi	16k
IV	Berwyn Heights	3k
IV	Bladensburg	8k
IV	Brentwood	3k
IV	California	9k
IV	Cheverly	7k
IV	Colesville	21k
IV	College Park	26k
IV	Colmar Manor	1k
IV	Cottage City	1k
IV	East Riverdale	16k
IV	Edmonston	1k
IV	Hillandale	3k
IV	Hyattsville	15k
IV	Kemp Mill	11k
IV	Landover Hills	2k
IV	New Carrollton	13k
IV	Riverdale Park	7k
IV	University Park	2k
IV	White Oak	22k
IV	Woodlawn	38k
IV	Capitol Heights	4k
IV	Coral Hills	11k
IV	District Heights	6k
IV	Fairmount Heights	2k
IV	Forestville	12k
IV	Marlow Heights	6k
IV	Mays Chapel	12k
IV	Seat Pleasant	5k
IV	Walker Mill	11k
IV	Gloucester Courthouse	2k
IV	Portsmouth	101k
IV	Richmond	191k
IV	Lake Shore	13k
IV	Lexington Park	12k
IV	Solomons	2k
IV	Baltimore	611k
IV	Mayo	4k
IV	Owings	1k
IV	Selby-on-the-Bay	4k
IV	Shady Side	7k
IV	Elkton	2k
IV	Chillum	36k
IV	Langley Park	16k
IV	Mount Rainier	9k
IV	Silver Spring	78k
IV	Takoma Park	18k
IV	Altavista	3k
IV	Farmville	7k
IV	Lake Ridge	34k
IV	Stanley	1k
IV	Kettering	12k
IV	Lake Arbor	9k
IV	Largo	8k
IV	Gloucester Point	10k
IV	Massanutten	3k
IV	Shenandoah	2k
IV	Sterling	53k
IV	Grottoes	2k
IV	Hampden Sydney	1k
IV	Hopewell	22k
IV	Luray	5k
IV	Arnold	25k
IV	Elkridge	22k
IV	West Elkridge	29k
IV	Appomattox	2k
IV	New Market	2k
IV	Poquoson	12k
IV	Weyers Cave	1k
IV	Darnestown	7k
IV	Green Valley	12k
IV	Bellwood	6k
IV	Bensley	6k
IV	Ettrick	6k
IV	Gainesville	5k
IV	Linton Hall	9k
IV	Mount Jackson	2k
IV	Petersburg	34k
IV	Timberville	2k
IV	Kenbridge	1k
IV	Newport News	180k
IV	Woodstock	4k
IV	Hughesville	2k
IV	Leonardtown	2k
IV	Londontowne	8k
IV	Riva	4k
IV	Towson	54k
IV	Bedford	6k
IV	Leesburg	37k
IV	Madison Heights	12k
IV	Middletown	1k
IV	Strasburg	4k
IV	Ellicott City	66k
IV	Golden Beach	3k
IV	Rosaryville	12k
IV	Broadway	3k
IV	Brookneal	1k
IV	Buena Vista	6k
IV	Craigsville	1k
IV	Lawrenceville	1k
IV	Matoaca	2k
IV	Ballenger Creek	19k
IV	Frederick	57k
IV	Clarksville	1k
IV	Courtland	1k
IV	Glasgow	1k
IV	Smithfield	6k
IV	Dunkirk	3k
IV	Dunkirk Town Center	2k
IV	Huntingtown	3k
IV	Huntingtown Town Center	2k
IV	Marlton	9k
IV	Mount Airy	9k
IV	Chase City	2k
IV	Crimora	2k
IV	Dooms	1k
IV	Emporia	6k
IV	Lyndhurst	2k
IV	Purcellville	5k
IV	Waynesboro	21k
IV	Edgemere	9k
IV	Laurel	21k
IV	Maryland City	7k
IV	North Laurel	24k
IV	Haymarket	1k
IV	North Shore	2k
IV	Stuarts Draft	11k
IV	Union Hall	1k
IV	Bridgewater	5k
IV	Centreville	65k
IV	Chantilly	48k
IV	Lexington	7k
IV	Chester	4k
IV	Grasonville	2k
IV	Harrisonburg	42k
IV	Rustburg	1k
IV	Portsmouth Heights	99k
IV	Williamsburg	11k
IV	Poolesville	6k
IV	Sykesville	5k
IV	Olney	37k
IV	Rossmoor	8k
IV	Colonial Heights	18k
IV	Dumbarton	6k
IV	Glen Allen	15k
IV	Lakeside	11k
IV	Laurel	16k
IV	Eldersburg	38k
IV	Rushmere	1k
IV	Gaithersburg	60k
IV	Redland	18k
IV	Rockville	61k
IV	Roanoke Rapids	16k
IV	South Rosemary	3k
IV	Chester	20k
IV	Herndon	22k
IV	Tuckahoe	44k
IV	Inwood	3k
IV	Deale	5k
IV	Hampton	5k
IV	Garysburg	1k
IV	Weldon	1k
IV	Chesterfield Court House	4k
IV	Timberlake	11k
IV	Petersburg	3k
IV	Brunswick	5k
IV	Hurt	1k
IV	Lovettsville	1k
IV	Stephens City	1k
IV	Bolivar	1k
IV	Berryville	3k
IV	Dayton	1k
IV	East Hampton	148k
IV	Halifax	1k
IV	Hampton	146k
IV	Lynchburg	65k
IV	West Lynchburg	66k
IV	Moorefield	2k
IV	Braddock Heights	5k
IV	Garrison	10k
IV	Lochearn	26k
IV	Lusby	2k
IV	Milford Mill	29k
IV	Pikesville	32k
IV	Rock Hall	1k
IV	Fishersville	6k
IV	Forest	10k
IV	Owings Mills	27k
IV	Saint Michaels	1k
IV	Jolivue	1k
IV	Staunton	24k
IV	Algonquin	1k
IV	Cambridge	11k
IV	South Weldon	1k
IV	Buchanan	1k
IV	Charles Town	3k
IV	Ranson	3k
IV	Cloverly	8k
IV	South Boston	8k
IV	Stevensville	8k
IV	Trappe	1k
IV	Franklin	8k
IV	Murfreesboro	2k
IV	South Suffolk	81k
IV	Suffolk	64k
IV	Norlina	1k
IV	Gretna	1k
IV	Clover Hill	4k
IV	Cape Charles	1k
IV	Clifton Forge	5k
IV	Chesapeake	199k
IV	Easton	13k
IV	Middletown	3k
IV	Romney	2k
IV	Randallstown	34k
IV	Annapolis	36k
IV	Hillsmere Shores	3k
IV	Parole	17k
IV	Robinwood	5k
IV	Blue Ridge	3k
IV	Shepherdstown	1k
IV	Chatham	1k
IV	Cape Saint Claire	8k
IV	Martinsburg	16k
IV	Centreville	3k
IV	Riverside	7k
IV	Norfolk	234k
IV	Bowleys Quarters	7k
IV	Middle River	24k
IV	White Marsh	9k
IV	Keyser	6k
IV	Danville	46k
IV	Roxboro	9k
IV	Parsons	1k
IV	Burtonsville	8k
IV	West Laurel	4k
IV	Mountain Lake Park	2k
IV	Oakland	2k
IV	Warrenton	9k
IV	Edgewood	23k
IV	Joppatowne	12k
IV	Yanceyville	2k
IV	Chatmoss	2k
IV	Chestertown	5k
IV	Kingstown	2k
IV	Kingsville	5k
IV	Winchester	25k
IV	Terra Alta	1k
IV	Eden	16k
III	Wentworth	3k

(k = x1,000)

PAGER content is automatically generated, and only considers losses due to structural damage. Limitations of input data, shaking estimates, and loss models may add uncertainty. PAGER results are generally available within 30 minutes of the earthquake’s occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following an earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.