The pH level fell to 4.5 before returning to normal after a Prologue. Other articles where Mount Spurr is discussed: Alaskan mountains: Physiography of the southern ranges: Mount Spurr erupted in 1954 and remains active, as do Mounts Redoubt (1968) and Augustine (1976). That is what you are seeing and why it looks a bit different from time-to-time. Turbidity rose from 5 ppm to 290 ppm and lasted six days before returning to normal. From Waythomas and Nye (2002): "The first known historical eruption of Crater Peak occurred at about 5 a.m. on July 9, 1953 (Juhle and Coulter, 1955; Miller and The Aleutian Arcs tallest volcano, Mount Spurr reaches a colossal 3,374 meters in height and can be found in the southwest of the state, not far from Anchorage. The volcano, Mount Spurr, a 11,100-foot peak across Cook Inlet from Anchorage, had been dormant for 39 years until a June 27 eruption. It has erupted at least two dozen times in the past thousands of years. By 10 am on 19 August (the day following the ashfall) a peak four hour demand of 230 million litres per day was recorded, about a 70 percent increase in normal demand. 1. An ash plume reaching an estimated altitude of at least 35,000 feet has during the eruption of Mount Spurr volcano on September 17, 1992. The 2026 Mount Spurr Eruption was an Violent VEI 5 eruption that happened on August 17th, 2026. (Many longtime Anchorage residents still have jars filled with Spurrs fine, brown grit!) On 18th August a stronger eruption occurred. The eruption produced ash columns up to 13.5 km high and ashfall in several hundred km distance. Active for millennia, Mount Redoubt has erupted four times since it was first observed: in 1902, 1966, 1989 and 2009, with two questionable eruptions in 1881 and 1933. 10. Mount Spurr Mid-Day on May 18th, 2026, Steaming. Mount Spurr Alaska. Abstract. "The youngest volcanic feature at Mount Spurr is a satellitic cone, Crater Peak, located in the breach in the caldera about 3.2 km south of Mount Spurr. It did so during a series of eruptions in 1989 and 1990. There were 3 main explosions, on 27 June, 18 August and 16-17 September. Edit. 2018 Eruption of Mount Spurr. The 2014 Mount Spurr Eruption was an Explosive VEI 4 eruption that happened on June 1st, 2014. Crater Peak has a summit crater that is itself slightly breached along the south rim; the north wall of the crater exposes the truncated remains of an older dome or lava lake. Time: 5:00 PM PDT Eruption type: Plinian Location: Alaska, USA: Fatalities: 9 Damages: $65 Million (2016 USD) Other impacts: Unknown The 2026 Mount Spurr Eruption was an Violent VEI 5 eruption that happened on August 17th, 2026. No action was taken that evening. The 1953 eruption of Mount Spur deposited 3-6 milimeters of ash on the city, causing short term pH and turbidity problems with the city's water supply (Wilcox, 1959). Based on our relocated hypocenters, seismicity in these three regions form clusters reflecting structures within the volcano. eruption at Mt. Ash remnants of the eruption are still evident on the lower slopes. Characteristics and Environmental Conditions for the Crater Peak Eruptions of Mount Spurr, 1992 June 27 August 19 September 17 Source Start time (GMT) 1504 0042 2003 1 Eruption peak (GMT) 1823 0055 2221 2 End time (GMT) 1907 0410 2339 1 Duration (min) 243 208 216 1 Spurr awoke from 39 years of dormancy and burst into sub-plinian eruption after 10 months of elevated seismicity. 2018 Eruption of Mount Spurr. This 11,070-foot volcano last erupted in September of 1992, when it dusted the region with an eighth-inch layer of volcanic ash and shut down the regular life in Alaskas largest city for several days. Reports indicate that Mount Cleveland has erupted around 25 times in the last 230 years. The most recent eruption of this volcano occurred in 1995. A large, subplinian eruption occurred in 1992 at Mt Spurr volcano. The nearest settlement is probably Tyonek, or around Beluga Power Plant, which are both next to Cook Inlet. History Talk (0) Comments Share. If anyone has found an easier approach, please correct me. The city of Anchorage was covered by 3 milimeters of volcanic ash from the August 1992 eruption of Mt. Approximately 80 miles from the city of Anchorage lies Mount Spurrthe closest volcano to Alaskas largest city. Spurr erupted in 1953 and 1992 in Alaska, U.S.A. Water Supply. The ash was removed from the pipes using vacuum trucks. Mount Spurr erupted Tuesday for the second time this summer, blowing a plume of ash 11 miles high, halting air traffic and blackening the evening sky over southcentral Alaska. The high water demand caused widespread water-pressure and -supply problems throughout 19 August, with levels in several storage reservoirs dropping to dangerously low levels. Spurr is an active volcano that last erupted in the late summer of 1992, so theres that. Edit. Mount Spurr Mid-Day on May 18th, 2026, Steaming. Spurr which is ongoing at this time. Approximately 80 miles from the city of Anchorage lies Mount Spurrthe closest volcano to Alaskas largest city. Spurr volcano, located 125 kilometers to the west. The August 1992 eruption deposited about 3 milimeters of fine sand-sized volcanic ash on the city (Johnston, 1997b). In 1992, Mount Spurr erupted three times from its Crater Peak vent. Although care was taken to minimize the amount of ash entering the stormwater system, large amounts of ash still had to be removed the following spring. A large, subplinian eruption occurred in 1992 at Mt Spurr volcano. Crater Peak is a satellite vent located in a breach in the caldera rim about 3.5 km south of Mount Spurr at an elevation of 2309 m (fig. Seismicity was most active at shallow depths at the summit (-2 to 1 km depth) and at depths of 0-5 km and 10-20 km at the Crater Peak vent. At least one reservoir was completely emptied. Stranded passengers were unable to use the toilets due to the lack of water. Mount Spurr Mid-Day on May 18th, 2026, Steaming. History Talk (0) Comments Share. The summit of Mount Spurr is 3375 m high and is centrally located within a 5 x 6 km caldera (Nye and Turner, 1990). Three 1992 eruptions were short-lived and explosive. During the spring thaw some local flooding occurred due to pipe blockages. Mount Spurr . 3). The 1953 eruption of Mount Spur deposited 3-6 milimeters of ash on the city, causing short term pH and turbidity problems with the city's water supply (Wilcox, 1959). The 1986 eruption lasted five months. Mount Iliamna, Augustine Volcano, Mount Redoubt and Mount Spurr, Anchorages closest neighbor volcanoes have an explosive, active history. Spurr erupted in 1953 and 1992 in Alaska, U.S.A. Anchorage is the largest city in Alaska, located 120 kilometers east of Mount Spurr. Pyroclastic flows generated a tsunami 27 feet high after the collapse of the volcano. The eruption produced ash columns up to 13.5 km high and ashfall in several hundred km distance. more 1953 eruption Small local earthquakes continue to appear on seismic recordings. Mt. Two more eruptions followed in August and September. According to the researchers, the Makushin consists of unique geothermal qualities which can easily fulfill the power needs of nearby towns. 2018 Eruption of Mount Spurr; VEI 5 eruption ; The Eruption in it's weaker, beginning Stages. Had fires occurred in parts of the city no water would have been available. Prologue. Also located in the Aleutian Arc, Mount Spurr has an elevation of 3,374 m. It is a large lava dome with a caldera at its summit. Opening of the Anchorage International Airport was delayed for several hours due to a shortage of water with which to clean the runways. There were 3 main explosions, on 27 June, 18 August and 16-17 September. The eruption in 1989 spewed volcanic ash to a height of 45,000 ft (13,700 m). The 2017 Mount Spurr Eruption was an Explosive VEI 4 eruption that happened on June 29th, 2017. Volcn Chaitn-Sam Beebe-Ecotrust.jpg. In both 1953 and 1992, it explosively erupted, coating the nearby city in ash and debris. On 27 June, 1992, the Crater Peak vent on the south side of Mt. Our expert volcanologists and photographers offer unique travel experiences: Seismicity continues to be slightly elevated. Sulphur dioxide was detected 500 km from the volcano, on satellite images. A moderate explosive eruption began on 27th June and produced an ash which drifted 200 km from the volcano to a height of 9 km. Ash did not move far into the system but settled out rapidly, eventually forming a hardened deposit. Spurr and it has been changing slightly over a relatively short period of time. Spurr volcano has erupted more than thirty-five times in the mid- to late-Holocene As one staff member described "we did not equate ashfall to high water demand we were not prepared for what happened had we known we would have moved to fill reservoirs sooner." * SWVRC Friday, August 13th, 2004 The National Weather Service reported early Thursday that Mount Spurr had spewed a small The pH level fell to 4.5 before returning to normal after a few hours. 2020-12-19 Location map of Spurr Volcano, Cook Inlet region, Alaska (courtesy of Janet Schaefer, Alaska Volcano Observatory / USGS), The subplinian eruption column of Mt Spurr volcano during the 18 Aug 1992 eruption (photo: Game McGimsey, AVO / USGS), "Your Vanuatu Volcano tour was a fantastic mix of hard core volcanoes and cultural Vanuatu life " -, Colors of Iceland: Fire, Earth, Ice and Water, Spurr volcano (Cook Inlet, SW Alaska) activity update. Most Recent Eruptions: 1992 Overall Threat Score: 163. Time: 5:00 PM PDT Eruption type: Plinian Location: Alaska, USA: Fatalities: 9 Damages: $65 Million (2016 USD) Other impacts: Unknown The 2026 Mount Spurr Eruption was an Violent VEI 5 eruption that happened on August 17th, 2026. Anchorage is the largest city in Alaska, located 120 kilometers east of Mount Spurr. Photo: dvs. The clean-up of ash resulted in excessive demands for water and caused major problems for the Anchorage Water and Wastewater Utility (AWWU) water production and distribution systems (AWWU pers comm.). Prologue. It caught KLM Flight 867, a Boeing 747 aircraft, in its plume. Mount Cleveland, named after former-president Grover Cleveland back in 1984 by the U.S. Coast & Geodetic Survey, is approximately 5,675 feet high and considered to be a very active volcano. Time: 5:00 PM PDT Eruption type: Plinian Location: Alaska, USA: Fatalities: 9 Damages: $65 Million (2016 USD) Other impacts: Unknown The 2026 Mount Spurr Eruption was an Violent VEI 5 eruption that happened on August 17th, 2026. Precursory activity to this eruption may have been observed in mid-May, 1953, when Northern Consolidated Airline pilots reported increased steaming from the summit of Spurr (Unknown, 1953; Fairbanks News-Miner, May 21, 1953). Mount Spurr in the Aleutian chain Despite adequate production capacity, physical restrictions within the distribution system prevented the utility from moving sufficient water volumes to meet demand in parts of Anchorage. But the region around Alaskas biggest city is hardly a stranger to volcanic eruptions and the mayhem they can cause. Some reservoirs were isolated from the immediate distribution system to ensure adequate volumes for fire suppression if required. Spurr-Crater Peak: 1953 & 1992. The AWWU received a warning of the impending ashfall on the afternoon of 18 August. The Makushin Volcano has erupted more than 24 times during the past years and owns the threat of repeating the procedure in the future. Eruption of Augustine volcano The most violent eruption in historic times occurred in 1883. Major eruptions of Augustine have occurred in 1812, 1883, 1908, 1935, 1963-1964, 1976 and 1998. Mount Redoubt, south of Spurr in Lake Clark National Park, was the last volcano to dump ash on Anchorage. Neighbor volcanoes have an Explosive, active history eruption in it 's weaker, beginning. Vacuum trucks fine sand-sized volcanic ash on Anchorage Anchorage lies Mount Spurrthe closest volcano to Alaska largest. Of years collapse of the city of Anchorage lies Mount Spurrthe closest volcano to , was the last 230 years main explosions, on 27 June 1992! Been available 25 times in the last 230 years unable to use the toilets due to the. 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