IV V VI 0 25 50 km IV IV IV

							                                                                                Earthquake                                Orange
                                                                                   Shaking                                Alert
 M 5.8, VIRGINIA                                                                                                                                                                       PAGER
 Origin Time: Tue 2011-08-23 17:51:04 UTC (13:51:04 local)
                o       o
 Location: 37.94 N 77.93 W Depth: 6 km                                                                                                                                               Version 3
                                                                                                                                                Created: 2 hours, 5 minutes after earthquake

  Estimated Fatalities                                                       Orange alert level for economic losses.
                                                                             Significant damage is likely and the disaster is
                                                                                                                                        Estimated Economic Losses
                78%                                                          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.                                                 35%
                          22%                                                                                                                                         26%            21%
                                                                                                                                                   1%       9%                               6%       1%
                                                                             Green alert level for shaking-related fatalities.
                                                                             There is a low likelihood of casualties.
                      1              100              10,000                                                                                            1                100            10,000
                            10                1,000            100,000                                                                                           10               1,000        100,000
                                     Fatalities                                                                                                                       USD (Millions)

 Estimated Population Exposed to Earthquake Shaking
   ESTIMATED POPULATION                           - -*             19k*         9,627k*         2,285k                76k           23k                 10k                      0                0
    EXPOSURE (k = x1000)
     ESTIMATED MODIFIED
     MERCALLI INTENSITY

     PERCEIVED SHAKING                        Not felt            Weak              Light     Moderate              Strong     Very Strong           Severe                 Violent        Extreme
                          Resistant              none              none             none           V. Light           Light      Moderate        Moderate/Heavy               Heavy         V. Heavy
  POTENTIAL               Structures
   DAMAGE                 Vulnerable
                          Structures             none              none             none            Light          Moderate    Moderate/Heavy           Heavy               V. Heavy        V. Heavy
 *Estimated exposure only includes population within the map area.

 Population Exposure                                                                        population per ~1 sq. km from Landscan        Structures:
                                                                                                                                          Overall, the population in this region resides
                                                                                                                                          in structures that are resistant to earthquake
79.75°W                            78.75°W
                                       Romney
                                       Romney                       77.75°W
                                                                 Inwood
                                                                Inwood
                                                                       Charles Town
                                                                      Charles Town
                                                                                                    76.75°W                               shaking, though some vulnerable structures

                                    IV                                                                Columbia
                                                                                                      Columbia                            exist.
                                                            Winchester
                                                             Winchester
                                                                                Leesburg
                                                                                Leesburg
                                                                                         Germantown
                                                                                         Germantown
     Parsons
     Parsons                   Moorefield
                               Moorefield                 Stephens City
                                                           Stephens City                      Rockville
                                                                                              Rockville                                   Historical Earthquakes (with MMI levels):
                          Petersburg
                          Petersburg                  Strasburg
                                                     Strasburg                              Potomac
                                                                                            Potomac
                                                  Woodstock
                                                  Woodstock
                                                           Front Royal
                                                            Front Royal               Reston
                                                                                       Reston
                                                                                    Chantilly
                                                                                    Chantilly           Washington                        There were no earthquakes with significant
                                                                                                                                          population exposure to shaking within a 400
                                                                                               BurkeAlexandria
                                                                                               BurkeAlexandria
                                                                                              Burke
                                                                                             Burke                                        km radius of this event.
                                             Mount Jackson
                                            Mount Jackson                               Manassas
                                                                                        Manassas                               38.75°N
                                                  Luray
                                                  Luray                                       Dale City Saint Charles
                                                                                              Dale City Saint Charles
                                       BroadwayStanley
                                       BroadwayStanley
                                                                                                                                 IV



                                                                                                              Saint Charles
                                                                                                              Saint Charles
                                     Harrisonburg
                                     Harrisonburg                        Culpeper
                                                                         Culpeper
                                 Bridgewater
                                 Bridgewater
                                                                                         Fredericksburg
                                                                                         Fredericksburg
                                    Grottoes
                                    Grottoes              Orange
                                                         Orange                                          Colonial Beach
                                                                                                        Colonial Beach
                              Verona
                              Verona                                                 Spotsylvania Courthouse
                                                                                     Spotsylvania Courthouse
                            Staunton
                           Staunton                    Gordonsville
                                                      Gordonsville
                                                                                      V
                                                                                      V
                                                                                      V
                                                                                      V
                                                                                      V




                Craigsville
                Craigsville
                                                                                      V
                                                                                      V
                                                                                      V
                                                                                      V




                                  Waynesboro
                                 Waynesboro
                             Stuarts Draft
                             Stuarts Draft   Charlottesville Louisa
                                             Charlottesville Louisa
                                                 Lake Monticello
                                                  Lake Monticello                                               Tappahannock
                                                                                                                Tappahannock
                                                                                                                               38°N
                                                         VIIIIIIIII
                                                         V
                                                         V
                                                         V
                                                         V
                                                         V
                                                         V
                                                         V
                                                         V




 Clifton ForgeLexington
 Clifton ForgeLexington
                 Buena Vista
                 Buena Vista                              Weber City
                                                          Weber City                     Ashland
                                                                                        Ashland                                           Selected City Exposure
                                                                                     Wyndham
                                                                                     Wyndham                                              from GeoNames.org
              Glasgow
              Glasgow                                                                   Laurel
                                                                                       Laurel
       Buchanan
       Buchanan
                           Amherst
                          Amherst                                                        Richmond
                                                                                            Fort Lee
                                                                                           Fort Lee
                                                                                                                                            MMI City                                     Population
                                                                                                                                            VII Louisa                                           2k
 Blue Ridge
 Blue Ridge           West Lynchburg
                      West Lynchburg
                                 Appomattox
                                  Appomattox
                                                                                Bellwood
                                                                                Bellwood
           BedfordForest
          BedfordForest                                                         Chester
                                                                                Chester                                                      VI Gordonsville                                     2k
                   Timberlake
                   Timberlake
                        Rustburg
                         Rustburg              Farmville
                                               Farmville                             Hopewell
                                                                                     Hopewell
   IIIIIIIIIV




                                             Hampden Sydney
                                             Hampden Sydney                                                                                  VI Newington                                       21k
            V
            V
            V




                                                                                                                               37.25°N
            V
            V
            V
            V




                                                                                 Petersburg
                                                                                 Petersburg
            V




                                                          Crewe
                                                          Crewe                                                                              VI Orange                                           4k
      North Shore Altavista Brookneal
      North Shore Altavista Brookneal                          Blackstone
                                                              Blackstone                   Waverly
                                                                                          Waverly                                            VI Weber City                                       1k
     Union Hall
     Union Hall                                       Victoria
                                                      Victoria
                Gretna
                Gretna                                                                        Wakefield
                                                                                              Wakefield                                      VI Lake Monticello                                10k
               Chatham
              Chatham                        Chase City
                                             Chase City                                                                                       V Virginia Beach                                425k

 Chatmoss
 Chatmoss
              km              Halifax
                              Halifax
                               South Boston
                               South Boston
                                                          South Hill
                                                         South Hill          Emporia
                                                                             Emporia        Courtland
                                                                                            Courtland
                                                                                                 Franklin
                                                                                                Franklin
                                                                                                                                              V Washington                                    552k

   Eden
  Eden
            0 25 50
               Danville
              Danville
                                         Clarksville
                                          Clarksville
                                                                         Roanoke Rapids Murfreesboro
                                                                          Roanoke Rapids Murfreesboro
                                                                                                                   IV          36.5°N
                                                                                                                                             IV Richmond
                                                                                                                                             IV Baltimore
                                                                                                                                                                                              191k
                                                                                                                                                                                              611k
                                                       Norlina
                                                       Norlina             South Weldon
                                                                           South Weldon
   Wentworth Yanceyville Roxboro
  Wentworth Yanceyville Roxboro                                                                                                              IV Annapolis                                       36k
 PAGER content is automatically generated, and only considers losses due to structural damage.                                            bold cities appear on map                           (k = x1000)
 Limitations of input data, shaking estimates, and loss models may add uncertainty.
 http://earthquake.usgs.gov/pager                                                                                                                                 Event ID: us082311a