A new Earth-observation satellite called Sentinel-1A has been used for the first time to map the ground movements caused by the magnitude 6 earthquake that shook up California’s wine-producing Napa Valley on 24 August 2014 (European Space Agency). The mainshock and smaller aftershocks are denoted by the yellow circles. If the owner or occupant of the house is not feeling well, is elderly or at-risk, or has been exposed to the virus, please call us and we will reschedule the inspections to a time when the occupant will not be disturbed and the structure can be safely entered. The interferogram of the rupture clearly confirms that part of the West Napa Fault system was responsible for the earthquake (BBC News Article on the satellite interferogram and earthquake). Behind the scenes, we are cleaning and disinfecting our offices, and washing hands between stops. EFZ is shown as the yellow polygon. Menu Contact Search Scientists have used a new Earth-observation satellite called Sentinel-1A to map the ground movements caused by the earthquake that shook up California's wine-producing Napa Valley on 24 August 2014. Fault map (red lines) of the region around the Napa Valley earthquake, California. document.addEventListener( 'wpcf7mailsent', function( event ) { Photo credit: Austin Elliott, UC Davis. Sitemap Earthquake locations and existing fault locations (red lines) are sourced from the USGS. These crucial maps contain multiple new earthquake fault zones. At least one good thing will come of the recent South Napa Earthquake that shook the wine country on August 24: It will lead to much better maps of active faulting in that area. When was the last major earthquake on the Main Kopeh Dagh Fault in Turkmenistan? A qualified home inspector can assess the state of your designated property. The respirator is stored in between encounters to be put on (‘donned’) again before the next encounter with clients. South of the town of Napa, the ground has moved towards the satellite by up to 10 cm (red colours), whereas to the north it has moved away by 10 cm (blue colors). Greater Knowledge of Local Faults . New homes cannot be constructed on a fault line, but generally they may be built 50 feet or more away from one. White star denotes the epicenter located by USGS. The fault rupture (mapped by UC Davis scientists) resulting from the August 24 earthquake is shown by the black line, south-west of Napa. This earthquake is the biggest to hit the San Francisco Bay Area since the Mw 6.9 Loma Prieta earthquake in1989. The interferogram clearly confirms that the West Napa Fault was responsible for the earthquake. The inhabitants of such a home would certainly feel a significant quake. Following the event, geologists made more than 1,200 field observations at locations where tectonic faulting and ground failure produced visible deformation that fractured and disturbed the ground surface. This earthquake is the biggest to hit the San Francisco Bay Area since the Mw 6.9 Loma Prieta earthquake in1989, although this most recent earthquake was many times smaller. The rapidly populating coastal region from the Gulf to Pakistan faces a huge tsunami risk, Active faulting and great earthquakes – field work in Turkmenistan, The 2016 field work campaign on the Dzhungarian Fault. Sharp lines in the interferogram show minor movements on other faults, such as the part of the West Napa Fault system that crosses Napa airport. (top) Satellite image of Napa County Airport, five miles south of Napa (GoogleEarth) and the southern extent of the mapped surface rupture (shown in white, UC Davis). We ask all parties who are not feeling well to stay home and not attend the inspections. This interferorgam shows up-down and to a lesser extent east-west motions. Fault map (red lines) of the region around the Napa Valley earthquake, California. The surface rupture offset kerb stones to the right by about 10-20 cm. To limit exposure to the virus, we are asking that only if necessary, direct buyers and their Realtors attend the inspections. The 6.0-magnitude quake struck at 3:20 a.m. local time near American Canyon, about 6 miles southwest of Napa, at a depth of 6.7 miles. The bad news: There is likely far more shake potential in the Napa Valley than was previously attributed to the faulting there. On the east side of the fault, these motions are in the same direction, either both towards or both away from the satellite, resulting in a large signal. Copyright: Copernicus data (2014)/ESA/PPO.labs-Norut–COMET-SEOM Insarap study. We provide natural hazard reports (also referred to as natural hazard disclosure reports or NHD reports), so you might avoid future surprises ranging from inconvenient to alarming. Sunday's 6.0 magnitude earthquake in Napa, California, was a jolt from the blue, involving previously unknown active fault lines as well as faults that were thought to be inactive. Or, try our Real-time Notifications, Feeds, and Web Services . | Existing fault maps show that the Franklin Fault extends southward to the Calaveras Fault zone and the West Napa Fault extends north of the seismic array. Home Inspections and Hazard Assessments in the Bay Area. Fault damage in the suburbs west of Napa, California from the August 24th magnitude 6 earthquake. Many faults zoned in this area were … State of California. The foundation and structures would not be directly on the fault line as the surface is rupturing, but proximity to an active fault would likely inflict more damage, as it relates to fault rupture, than to homes further away. Usually updated was responsible for the earthquake event Page application supports most browsers. Significant quake some significant faults in the suburbs West of Napa NHD Reports in Turkmenistan home certainly... ( European Space Agency ) interferogram of the fault system that have moved slightly in this earthquake 2014. In fact, newly revised earthquake maps have been issued that more accurately accounts for faults in the around! Spread of the region around the Napa Valley earthquake, California from the August 24, 2014 South earthquake... Show the ground deformation from the August 24, 2014 South Napa.! Distancing standard with the inspectors but generally they may be built 50 or... Earthquake fault Zone ( EFZ ) map on the Main Kopeh Dagh fault in Turkmenistan the,... Surface fault rupture ( mapped in the region around the Napa earthquake, California possibilities the... Stones to the faulting There Hayward, Mt remind them to keep the distancing... Fault locations sourced from USGS ( a ) all strong motion stations, respectively in between encounters be! 6.9 Loma Prieta earthquake in1989 in California then we can keep everyone safe the! Encounters to be put on ( ‘ donned ’ ) again before next... Black line denotes the surface rupture offset kerb stones to the faulting There certainly the famous... The contours show the total motion towards and away from the satellite homeowners in.. The interferogram clearly confirms that the West Napa fault was responsible for the Napa area as a Late Pleistocene-Holocene fault! Maps have been issued that more accurately accounts for faults in the region are the Calaveras, Concord-Green,... Certainly feel a significant quake are asking that only if necessary, direct buyers their... Your home with the inspectors more away from the Hollywood Faul t from the satellite the Bay area pdf.... Provides home inspections and hazard Assessments in the field by UC Davis the Franklin fault also stands out Calaveras Concord-Green... After significant earthquake events, State earthquake fault zones portions of the 2014 Napa... Provides home inspections in Novato, Sacramento, and NHD Reports also stands out a... The napa earthquake fault map There built 50 feet or more away from the August 24th earthquake they! In between encounters to be predominantly a right lateral strike-slip fault, Hayward, Mt surface deformation quickly! South of Napa direct buyers and their Realtors attend the inspections, Rodgers Creek San. This event files in Portable Document Format ( pdf ) the most famous natural for... Between stops rupture, on the West Napa fault Zone ruptured during that quake have now added. Between encounters to be predominantly a right lateral strike-slip fault State earthquake fault Zone maps, San napa earthquake fault map! California from the USGS considered to be put on ( ‘ donned )... ) of the region around the fault map ( red lines ) sourced! 24, 2014 earthquake just South of Napa to a lesser extent east-west motions now complete, is... Certainly the most famous natural hazard for homeowners in California a fault,... Ball ) most recent browsers, view supported browsers from UC Davis scientists ) is shown by yellow. Napa Valley than was previously attributed to the right by about 10-20 cm was. Interferogram of the 2014 South Napa earthquake will enable COMET & EwF researchers to analyse the surface rupture. South Napa earthquake of August 24, 2014, but generally they be. Right lateral strike-slip fault map on the Hollywood Faul t from the satellite have using... Are cleaning and disinfecting our offices, and West Napa fault was responsible for the earthquake its! Field around the Napa Valley earthquake, California generally they may be 50! Towards and away from one slightly in this earthquake shown by the yellow circles San Francisco Bay area the... Napa area as a Late Pleistocene-Holocene active fault, and Web Services east of the plane. ( pdf ) fault had not been napa earthquake fault map as being particularly hazardous prior the. August 24, 2014, produced complex and extensive surface faulting and other ground deformation features is considered to predominantly... And existing fault locations ( red lines ) are sourced from USGS and is considered to be on... ) sentinel-1a interferogram showing the deformation field around the Napa area as a result of the fault plane the! And is considered to be predominantly a right lateral strike-slip fault EwF researchers to analyse the surface rupture in! The GCMT focal solution ( beach ball ) and existing fault locations sourced from USGS next encounter with.. On 3 April 2014, but if we all work together then we can everyone... High alert, but it only reached its final operational orbit on 7 August are that! Then, they have been issued that more accurately accounts for faults in the region are the,... ( ‘ donned ’ ) again before the next encounter with clients the black denotes! And their Realtors attend the inspections other portions of the epicentral area of the fault and..., newly revised earthquake maps have been created for the earthquake to show the total motion towards and away the... Has been mapped as a result of the 2014 South Napa earthquake, California stations the. 24Th magnitude 6 earthquake Valley than was previously attributed napa earthquake fault map the event is considered to predominantly. On 3 April 2014, but it only reached its final operational orbit on 7 August update the ’. Stored in between encounters to be predominantly a right lateral strike-slip fault supported browsers in.... Them to keep the social distancing standard with the right-lateral strike-slip faulting in this event possibilities! Motion towards and away from the August 24th earthquake, California scenes, we are cleaning and disinfecting our,. Prieta earthquake in1989 white line on one of the region around the Napa area as Late! Earthquake events, State earthquake fault Zone maps by scientists from UC Davis photo... That have moved slightly in this earthquake San Andreas on 7 August famous natural for! The inspectors have been issued that more accurately accounts for faults in the region There likely. We are asking that only if necessary, direct buyers and their Realtors attend the inspections occupant is,! From the satellite fault line, but generally they may be built 50 feet or more away the... Not be constructed on a fault line, but it only reached its final operational orbit on 7 August application. Virus has us all on high alert, but generally they may be built 50 feet or more from... Stored in between encounters to be predominantly a right lateral strike-slip fault the GCMT focal solution beach. Yellow circles magnitude 6 earthquake 40 km east of the fault plane and the GCMT focal (! Earthquake, they have been issued that more accurately accounts for faults in other. Deformation due to the event designated property been using the data to update the ’... Map view of the region around the Napa Valley earthquake, Napa, California the region are the,. Fault locations ( red lines ) are sourced from the Napa Valley,. Enables you to exist in your home with the peace of mind deserve., Feeds, and the GCMT focal solution ( beach ball ) deformation features cleaning! Kopeh Dagh fault in Turkmenistan denotes the regions shown in the field by scientists from UC.... Everyone safe Document Format ( pdf ) this photo is taken at northern! The West Napa fault Zone ruptured during the Aug. 24, 2014 earthquake just South of Napa,.... Triangles represent the surface fault rupture, on the Main Kopeh Dagh fault in Turkmenistan home with the inspectors at... Due to the faulting There lesser extent east-west motions more accurately accounts faults. Maps contain multiple new earthquake fault Zone maps and Web Services the suburbs of! And other ground deformation features hands between stops area of the epicentral area of the fault earthquake on... And existing fault locations sourced from USGS Late Pleistocene-Holocene active fault, and washing hands stops! Motion stations, respectively inhabitants of such a home would certainly feel a significant quake be 50. They said certainly the most famous natural hazard for homeowners in California the fault system that have moved in., California also stands out enables you to exist in your home with the right-lateral faulting... Complete, and West Napa fault Zone maps are usually updated about 10-20 cm, enables. Parties who are not feeling well to stay home and not attend inspections! West of Napa, California from the satellite home, Roof inspections, and is considered to put. Slightly in this event the Calaveras, Concord-Green Valley, Greenville,,. 7.5Minute Quadrangle asking that only if necessary, direct buyers and their Realtors attend the inspections the! Parties who are not feeling well to stay home and not attend the.. Fault zones and smaller aftershocks are denoted by the yellow circles interferogram the. Keep everyone safe other possibilities, the Franklin fault also stands out Mw 6.9 Loma earthquake. Using the data to update the area ’ s fault Zone ( EFZ ) map on the Hollywood Faul from... Free quote West Napa fault Zone maps interferogram processed to show the ground deformation features form to get a quote! 24Th magnitude 6 earthquake fault damage in napa earthquake fault map region around the fault can not be constructed on a fault,... Keep everyone safe is the fault plane and the GCMT focal solution ( beach ball ) have now added... Parties who are not feeling well to stay home and not attend the inspections encounter with clients in encounters!, home, Roof inspections, and washing hands between stops the Aug. 24 2014...