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Then click the view plot button. Wait until map has completely loaded/refreshed before clicking. And click slowly. Select Plot Area Cross Section Width: Plot Input Km Plot Zoom In Plot Zoom Out View Plot Hide Plot Area Filter Instruments Show All Hide All Settings Maplayer Select Map Layers Select Base Map Streets Oceans OpenStreetMap World Imagery World Imagery with Labels National Geographic Terrain with Labels Topographic Gray Dark Gray Earthquake Colors Time Depth Earthquake Depth Units Km Miles Earthquake Time Units UTC Local Legend Display Settings Off On Earthquakes Data Off On Reset All Settings Reset Results Results Filters Filters Plots Plots Settings Settings FILTERS REGIONS Select Region ID-WY Alaska Hawaii Mariana Islands CA-NV WA-OR UT-CO-AZ-NM All VOLCANOES Volcanoes NORMAL 1 INSTRUMENTS Instruments Camera 1 GPS 8 Seismometer 8 Temperature 1 EARTHQUAKES Earthquake Age Last 2 Hours Last 2 Days Last 2 Weeks Last 4 Weeks Earthquake Magnitude < 1 M 1 - 2 M 2 - 3 M 3 - 4M 4 - 5M 5 - 6 M 6+ M Earthquake Depth (km) < 5km 5 - 10km 10 - 15km 15 - 20km 20+km EARTHQUAKE PLOTS Earthquake Plots To generate a cross-sectional plot, enter desired cross section width, then define the cross-sectional area by clicking the map twice to define the two endpoints. Then click the view plot button. Wait until map has completely loaded/refreshed before clicking. And click slowly. Select Plot Area Cross Section Width: Plot Input Mobile Km Plot Zoom In Plot Zoom Out View Plot Hide Plot Area SETTINGS Maplayer Select Map Layers Select Base Map Streets Oceans OpenStreetMap World Imagery World Imagery with Labels National Geographic Terrain with Labels Topographic Gray Dark Gray Earthquake Colors Time Depth Earthquake Depth Units Km Miles Earthquake Time Units UTC Local Legend Display Settings Off On Earthquake Data Off On Reset All Settings Reset Mount ShastaZoom to+Zoom In−Zoom Out Zoom In Zoom Out Legend Map Legend × Instruments Camera GPS Seismometer Temperature Volcanoes NORMAL/GREEN RESULTS VOLCANOES Total Volcanoes : 1 Mount Shasta GREEN - NORMAL N/A INSTRUMENTS Total Instruments : 18 Station: P660 GPS Monitoring Station Operator : UNAVCO Station: P655 GPS Monitoring Station Operator : UNAVCO Station: P659 GPS Monitoring Station Operator : UNAVCO Station: P656 GPS Monitoring Station Operator : UNAVCO Station: P661 GPS Monitoring Station Operator : UNAVCO Station: P658 GPS Monitoring Station Operator : UNAVCO Station: P657 GPS Monitoring Station Operator : UNAVCO Station: P663 GPS Monitoring Station Operator : UNAVCO Station:Shasta webcam Camera Monitoring Station Station : Shasta webcam Station: M03C Seismometer Monitoring Station Operator : USGS/NCSN Station: LBO Seismometer Monitoring Station Operator : USGS/NCSN Station: LCSB Seismometer Monitoring Station Operator : USGS/NCSN Station: LMP Seismometer Monitoring Station Operator : USGS/NCSN Station: LDL Seismometer Monitoring Station Operator : USGS/NCSN Station: LBR Seismometer Monitoring Station Operator : USGS/NCSN Station: LGY Seismometer Monitoring Station Operator : USGS/NCSN Station: LMC Seismometer Monitoring Station Operator : Station:Mt. Shasta Summit Fumarole Temperature Monitoring Station Station : Mt. Shasta Summit Fumarole EARTHQUAKES Earthquakes Data Off On Total Earthquakes : 0 × Earthquake Plots Time/Depth Future plot: Strain Release Over Time × Settings Color Earthquakes depth time Display earthquake colors according to their depth or age. Depth Units km mi Display earthquake depths in kilometers or miles. Time Units UTC local Display earthquake times in UTC or my local time. Show Legend On Off Display legend over map. Reset Clear all choices and return to default settings. Close × Help Click buttons at right to perform these actions. Show or hide earthquakes on map. Changes color depending on selection. View map. Hidden when map is visible. View list of earthquakes. Hidden when earthquake list is visible. Show or hide monitoring instruments on map. Changes color depending on selection. Display this help menu. Click to display legend. Display settings options. Provides options to: Color earthquakes by time or depth. View depth units in km or mi. View times as UTC or my local time. Turn legend on or off. Reset options to default values. Close × Empty Modal Loading Data Loading data..... Map Legend × Instruments Camera GPS Seismometer Temperature Volcanoes NORMAL/GREEN Full Screen Full Screen Zoom In Zoom In Full Screen Full Screen Legend Legend Current Alerts Mount Shasta green NORMAL, Mt. Shasta is a majestic, steep-sided stratovolcano located about 97 km (60 mi) north of Redding along the I-5 corridor in Northern California. It is the most voluminous of all the Cascade Range volcanoes, and the towns of Weed, Mt Shasta City, and McCloud lie in the shadow of its 4,317 m (14,163 ft) high snow- and ice-clad edifice. Quick Facts Location: California, Siskiyou County Latitude: 41.409° N Longitude: 122.193° W Elevation: 4,317 (m) 14,163 (f) Volcano type: Stratovolcano Composition: andesite, dacite Most recent eruption: ~3,200 years ago Nearby towns: Weed, Mount Shasta, Edgewood, Dunsmuir Threat Potential: Very High Summary Mount Shasta began forming on the remnants of an older, similar volcano that collapsed 300,000 to 500,000 years ago. The collapse spawned one of the largest landslides known on Earth, covering more than 440 km2 (170 mi2) of Shasta Valley to the northeast. Activity over the last 300,000 years includes long intervals of quiet interrupted by shorter spans of frequent eruptions. Eruptions at about 11,000 years ago built Black Butte and Shastina on the western flanks of Mount Shasta. In the last few millennia, smaller eruptions have broken out at the volcano’s summit and from vents on its upper east flank. The youngest dated eruption occurred about 3,200 years ago, producing block and ash flows on the volcano's north flank. Hot springs and volcanic gases seep from the summit indicating a relatively young and still-hot system. Non-volcanic shedding of young volcanic rock and ash from Mount Shasta’s steep slopes occurs during heavy rainfall or glacial floods. In the last 1,000 years, more than 70 mudflows have inundated stream channels. The record of eruptions over the last 10,000 years suggests that, on average, at least one eruption occurs every 800 to 600 years at Mt Shasta. USGS and UNAVCO seismic and geodetic networks provide real-time volcano monitoring data. Earthquake activity has been low for the last few decades and ground deformation is negligible. News link June 4, 2021 Gas sampling at Mount Shasta builds a long-term record of volcanic emissions link May 13, 2020 Unpacking CalVO's new seismic monitoring boxes link December 19, 2018 Which U.S. volcanoes pose a threat? View All Quick Facts Location: California, Siskiyou County Latitude: 41.409° N Longitude: 122.193° W Elevation: 4,317 (m) 14,163 (f) Volcano type: Stratovolcano Composition: andesite, dacite Most recent eruption: ~3,200 years ago Nearby towns: Weed, Mount Shasta, Edgewood, Dunsmuir Threat Potential: Very High Volcanoes Hazards Program Links Assess Prepare Forecast Activity Products Observatories About Back to Top Science Science Explorer Mission Areas Programs Unified Interior Regions Science Centers Observatories Laboratories Frequently Asked Questions Educational Resources Special Topics Products Data Maps Publications Multimedia Gallery Web Tools Software U.S. Board on Geographic Names The National Map USGS Library USGS Store Park Passes News Featured Stories News Releases Science Snippets Technical Announcements Employees in the News Get Our News Media Contacts I'm a Reporter Newsletters Connect Headquarters Locations Staff Profiles Social Media Careers Contact Us About About Us Survey Manual Organization Key Officials Congressional Budget Careers and Employees Doing Business Emergency Management Legal Accessibility FOIA Legal Privacy Policy Site Map DOI and USGS link policies apply U.S. Department of the Interior Facebook Twitter YouTube Instagram RSS Contact USGS 1-888-ASK-USGS answers.usgs.gov ✓Thanks for sharing!AddToAnyMore…