PAGER - M 3.4 - POTOMAC-SHENANDOAH REGION
Alert level does not include impacts from earthquake-related hazards such as tsunamis, landslides, fires or liquefaction.
Earthquake Shaking Alert Level: GREEN
Download Alert PDFWhat's this?Friday, July 16th, 2010 at 09:04:47 UTC (05:04:47 local)Location: 39.2° N, 77.3° WDepth: 5kmEvent Id: US2010YUA6Alert Version: 2Created: 11 weeks, 3 days after earthquake.
Alert Information
Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
Estimated Fatalities
| ESTIMATED FATALITIES (LEVEL) | Probability (%) |
|---|---|
| 0 (GREEN) | 99 |
| 1 to 9 (YELLOW) | 1 |
| 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 VALUE IN USD (LEVEL) | Probability (%) |
|---|---|
| 0 to 1 million (GREEN) | 99 |
| 1 to 10 million (YELLOW) | 1 |
| 10 to 100 million (YELLOW) | 0 |
| 100 million to 1 billion (ORANGE) | 0 |
| 1 to 10 billion (RED) | 0 |
| 10 to 100 billion (RED) | 0 |
| 100 billion + (RED) | 0 |
Detailed Information
| Estimated Modified Mercalli Intensity | I | II-III | IV | V | VI | VII | VIII | IX | X | |
|---|---|---|---|---|---|---|---|---|---|---|
| Est. Population Exposure | 946k* | 8,349k | 0 | 0 | 0 | 0 | 0 | 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 |
| 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
Population per ~1 sq. km. from LandScan
Structure Information Summary
Overall, the population in this region resides in structures that are highly 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 |
|---|---|---|
| III | Clarksburg | 2k |
| III | Germantown | 65k |
| III | Green Valley | 12k |
| III | Damascus | 12k |
| III | Gaithersburg | 60k |
| III | Montgomery Village | 42k |
| II | Washington | 552k |
| II | Annapolis | 36k |
| II | Arlington | 185k |
| II | Baltimore | 611k |
| II | Alexandria | 127k |
(k = x1,000)
| # | Date/Time | Mag | Lat, Lon, Depth | Country | Max MMI (Exposed) | Deaths | Secondary Effects | |
|---|---|---|---|---|---|---|---|---|
| Shaking | Total | |||||||
| No historic events found within search parameters | ||||||||
| MMI | City | Population |
|---|---|---|
| III | Clarksburg | 2k |
| III | Germantown | 65k |
| III | Green Valley | 12k |
| III | Damascus | 12k |
| III | Gaithersburg | 60k |
| III | Montgomery Village | 42k |
| III | Poolesville | 6k |
| III | Olney | 37k |
| III | Redland | 18k |
| III | Eldersburg | 38k |
| III | Sykesville | 5k |
| III | Brunswick | 5k |
| III | Darnestown | 7k |
| III | North Potomac | 26k |
| III | Travilah | 8k |
| III | Aspen Hill | 53k |
| III | Mount Airy | 9k |
| III | North Bethesda | 44k |
| III | North Kensington | 9k |
| III | Rossmoor | 8k |
| III | Rockville | 61k |
| III | Braddock Heights | 5k |
| III | Burtonsville | 8k |
| III | Chillum | 36k |
| III | Forest Glen | 8k |
| III | Langley Park | 16k |
| III | Silver Spring | 78k |
| III | Takoma Park | 18k |
| III | Ballenger Creek | 19k |
| III | Frederick | 57k |
| III | Leesburg | 37k |
| III | Purcellville | 5k |
| III | Walkersville | 6k |
| III | Clover Hill | 4k |
| III | Cloverly | 8k |
| III | Colesville | 21k |
| III | Kemp Mill | 11k |
| III | White Oak | 22k |
| III | Bethesda | 53k |
| III | Chevy Chase | 3k |
| III | Chevy Chase Village | 2k |
| III | Friendship Village | 5k |
| III | Kensington | 2k |
| III | Somerset | 1k |
| III | South Kensington | 8k |
| III | Union Bridge | 1k |
| III | Lovettsville | 1k |
| III | Beltsville | 17k |
| III | Calverton | 13k |
| III | Fairland | 23k |
| III | West Laurel | 4k |
| II | Cabin John | 2k |
| II | Potomac | 45k |
| II | Laurel | 21k |
| II | Maryland City | 7k |
| II | South Laurel | 22k |
| II | Middletown | 3k |
| II | Westminster | 18k |
| II | Bolivar | 1k |
| II | Milford Mill | 29k |
| II | Woodlawn | 36k |
| II | Adelphi | 16k |
| II | Berwyn Heights | 3k |
| II | College Park | 26k |
| II | East Riverdale | 16k |
| II | Edmonston | 1k |
| II | Hillandale | 3k |
| II | Hyattsville | 15k |
| II | Riverdale Park | 7k |
| II | University Park | 2k |
| II | Great Falls | 10k |
| II | New Windsor | 1k |
| II | Severn | 42k |
| II | Ferndale | 16k |
| II | Glen Burnie | 40k |
| II | South Gate | 30k |
| II | Dundalk | 62k |
| II | Shepherdstown | 1k |
| II | Glenn Dale | 14k |
| II | Goddard | 6k |
| II | Greenbelt | 22k |
| II | New Carrollton | 13k |
| II | Woodlawn | 38k |
| II | Arden on the Severn | 2k |
| II | Crownsville | 2k |
| II | Herald Harbor | 3k |
| II | North Laurel | 24k |
| II | Pasadena | 13k |
| II | Riverside | 7k |
| II | Odenton | 26k |
| II | Garrison | 10k |
| II | Owings Mills | 27k |
| II | Randallstown | 34k |
| II | Dunn Loring | 9k |
| II | Falls Church | 10k |
| II | Idylwood | 17k |
| II | Jefferson | 28k |
| II | McLean | 40k |
| II | Merrifield | 13k |
| II | Pimmit Hills | 6k |
| II | Seven Corners | 10k |
| II | Glenarden | 7k |
| II | Kettering | 12k |
| II | Lake Arbor | 9k |
| II | Landover Hills | 2k |
| II | Largo | 8k |
| II | Springdale | 3k |
| II | Walker Mill | 11k |
| II | Arnold | 25k |
| II | Lake Shore | 13k |
| II | Severna Park | 30k |
| II | Columbia | 96k |
| II | Myersville | 2k |
| II | Charles Town | 3k |
| II | Ranson | 3k |
| II | Washington | 552k |
| II | Reisterstown | 24k |
| II | Annandale | 58k |
| II | Berryville | 3k |
| II | Franconia | 40k |
| II | Lake Barcroft | 9k |
| II | Manassas | 38k |
| II | North Springfield | 9k |
| II | Springfield | 35k |
| II | Chesapeake Beach | 3k |
| II | Mitchellville | 10k |
| II | Woodmore | 8k |
| II | Littlestown | 4k |
| II | Mount Pleasant | 5k |
| II | Groveton | 22k |
| II | Hybla Valley | 17k |
| II | Inwood | 3k |
| II | Martinsburg | 16k |
| II | Annapolis | 36k |
| II | Arbutus | 21k |
| II | Bladensburg | 8k |
| II | Bowie | 50k |
| II | Brentwood | 3k |
| II | Capitol Heights | 4k |
| II | Charlestown | 1k |
| II | Cheverly | 7k |
| II | Colmar Manor | 1k |
| II | Coral Hills | 11k |
| II | Cottage City | 1k |
| II | Elkridge | 22k |
| II | Fairmount Heights | 2k |
| II | Linthicum | 8k |
| II | Mount Rainier | 9k |
| II | Parole | 17k |
| II | Robinwood | 5k |
| II | Seat Pleasant | 5k |
| II | West Elkridge | 29k |
| II | New Freedom | 4k |
| II | Shrewsbury | 3k |
| II | Brookmont | 3k |
| II | Arlington | 185k |
| II | Herndon | 22k |
| II | Oakton | 32k |
| II | Reston | 61k |
| II | Tysons Corner | 22k |
| II | Vienna | 15k |
| II | Wolf Trap | 15k |
| II | Bel Air | 10k |
| II | North Bel Air | 34k |
| II | South Bel Air | 49k |
| II | Green Haven | 19k |
| II | Hampstead | 6k |
| II | Riviera Beach | 14k |
| II | Baileys Crossroads | 20k |
| II | Belle Haven | 6k |
| II | Huntington | 9k |
| II | Lincolnia | 17k |
| II | Rose Hill | 16k |
| II | Gainesville | 5k |
| II | Haymarket | 1k |
| II | Dillsburg | 2k |
| II | Catonsville | 43k |
| II | Ellicott City | 66k |
| II | Riva | 4k |
| II | Jessup | 9k |
| II | Clinton | 30k |
| II | Fort George G Mead Junction | 10k |
| II | Manchester | 4k |
| II | Sterling | 53k |
| II | Carney | 30k |
| II | Cockeysville | 20k |
| II | Hampton | 5k |
| II | Overlea | 12k |
| II | Parkville | 31k |
| II | Towson | 54k |
| II | Lake Ridge | 34k |
| II | Lorton | 19k |
| II | Woodbridge | 35k |
| II | Baltimore | 611k |
| II | Fallston | 10k |
| II | Kingsville | 5k |
| II | Rosedale | 20k |
| II | Rossville | 13k |
| II | Williamsport | 2k |
| II | Stewartstown | 2k |
| II | Bull Run | 15k |
| II | Centreville | 65k |
| II | Dale City | 61k |
| II | Loch Lomond | 4k |
| II | Manassas Park | 11k |
| II | Montclair | 18k |
| II | Sudley | 8k |
| II | West Gate | 8k |
| II | Yorkshire | 7k |
| II | Camp Springs | 19k |
| II | Cavetown | 2k |
| II | Deale | 5k |
| II | Hillcrest Heights | 16k |
| II | Hillsmere Shores | 3k |
| II | Londontowne | 8k |
| II | Marlow Heights | 6k |
| II | Mayo | 4k |
| II | North Beach | 2k |
| II | Perry Hall | 33k |
| II | Selby-on-the-Bay | 4k |
| II | Smithsburg | 3k |
| II | Temple Hills | 8k |
| II | White Marsh | 9k |
| II | Burke | 58k |
| II | Fairfax | 22k |
| II | Mantua | 8k |
| II | Essex | 39k |
| II | Forest Heights | 3k |
| II | Jarrettsville | 3k |
| II | Middle River | 24k |
| II | Alexandria | 127k |
| II | Boonsboro | 3k |
| II | Brooklyn Park | 11k |
| II | Edgemere | 9k |
| II | Hagerstown | 37k |
| II | Pumphrey | 5k |
| II | Robinwood | 5k |
| II | Shady Side | 7k |
| II | Linton Hall | 9k |
| II | Nokesville | 1k |
| II | Huntingtown | 3k |
| II | Huntingtown Town Center | 2k |
| II | Owings | 1k |
| II | Saint James | 2k |
| II | Lochearn | 26k |
| II | Mays Chapel | 12k |
| II | Pikesville | 32k |
| II | Hanover | 15k |
| II | McSherrystown | 3k |
| II | Midway | 2k |
| II | Pennville | 2k |
| II | Chantilly | 48k |
| II | Fort Hunt | 13k |
| II | Fort Washington | 24k |
| II | Friendly | 12k |
| II | Lake Meade | 2k |
| II | Aberdeen | 14k |
| II | District Heights | 6k |
| II | Forestville | 12k |
| II | Morningside | 1k |
| II | Perryman | 3k |
| II | Thurmont | 6k |
| II | Culpeper | 11k |
| II | Dumfries | 5k |
| II | Triangle | 6k |
| II | Warrenton | 9k |
| II | Bryans Road | 6k |
| II | Crofton | 25k |
| II | Falmouth | 4k |
| II | Joppatowne | 12k |
| II | Pleasant Hills | 3k |
| II | Newington | 21k |
| II | West Springfield | 29k |
| II | Waldorf | 27k |
| II | Brandywine | 1k |
| II | East Petersburg | 4k |
| II | Halfway | 11k |
| II | Maugansville | 2k |
| II | Accokeek | 9k |
| II | Front Royal | 15k |
| II | Stevensville | 8k |
| II | Aquia Harbour | 9k |
| II | Winchester | 25k |
| II | Dunkirk | 3k |
| II | Dunkirk Town Center | 2k |
| II | Merrimac | 2k |
| II | Riverside | 6k |
| II | La Plata | 8k |
| II | Saint Charles | 36k |
| II | Waynesboro | 10k |
| II | Bonneauville | 1k |
| II | Loganville | 1k |
| II | Cape Saint Claire | 8k |
| II | Marlton | 9k |
| II | Rosaryville | 12k |
| II | Charlotte Hall | 1k |
| II | Edgewood | 23k |
| II | Quarryville | 2k |
| II | Bennsville | 8k |
| II | Greencastle | 4k |
| II | Gettysburg | 8k |
| II | Glen Rock | 2k |
| II | Bowleys Quarters | 7k |
| II | Parkville | 7k |
| II | Taneytown | 5k |
| II | Lake Heritage | 1k |
| II | Highfield Cascade | 1k |
| II | Wayne Heights | 2k |
| II | Boiling Springs | 3k |
| I | Potomac Heights | 1k |
| I | Indian Head | 3k |
| I | Chester | 4k |
| I | East Berlin | 1k |
| I | New Oxford | 2k |
| I | Hughesville | 2k |
| I | Mont Alto | 1k |
| I | Prince Frederick | 1k |
| I | Guilford | 2k |
| I | Millersville | 7k |
| I | Biglerville | 1k |
| I | Algonquin | 1k |
| I | Cambridge | 11k |
| I | Centreville | 3k |
| I | Chestertown | 5k |
| I | Easton | 13k |
| I | Emmitsburg | 3k |
| I | Golden Beach | 3k |
| I | Grasonville | 2k |
| I | Hancock | 2k |
| I | Havre de Grace | 12k |
| I | Kingstown | 2k |
| I | Lusby | 2k |
| I | Perryville | 4k |
| I | Rising Sun | 2k |
| I | Rock Hall | 1k |
| I | Saint Michaels | 1k |
| I | Solomons | 2k |
| I | Trappe | 1k |
| I | Carroll Valley | 4k |
| I | Chambersburg | 18k |
| I | Dallastown | 4k |
| I | East York | 9k |
| I | Fayetteville | 3k |
| I | Gap | 2k |
| I | Grantley | 4k |
| I | Jacobus | 1k |
| I | McConnellsburg | 1k |
| I | Mercersburg | 2k |
| I | North York | 2k |
| I | Red Lion | 6k |
| I | Shiloh | 10k |
| I | Spring Grove | 2k |
| I | Spry | 5k |
| I | Strasburg | 3k |
| I | Susquehanna Trails | 3k |
| I | Valley View | 3k |
| I | Weigelstown | 11k |
| I | West York | 4k |
| I | Willow Street | 8k |
| I | Windsor | 1k |
| I | Yoe | 1k |
| I | York | 40k |
| I | Dahlgren | 1k |
| I | Middletown | 1k |
| I | Stephens City | 1k |
| I | Strasburg | 4k |
| I | Columbia | 10k |
| I | Dover | 2k |
| I | Emigsville | 2k |
| I | Everett | 2k |
| I | Hallam | 3k |
| I | Lancaster | 55k |
| I | Manchester | 2k |
| I | Marietta | 3k |
| I | Maytown | 3k |
| I | Mount Holly Springs | 2k |
| I | Mount Joy | 7k |
| I | Mount Wolf | 1k |
| I | Mountville | 3k |
| I | New Holland | 5k |
| I | Paradise | 1k |
| I | Rheems | 2k |
| I | Rothsville | 4k |
| I | Shippensburg | 6k |
| I | Wrightsville | 2k |
(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.
