![]() Vog creates the potential for airborne health hazards to residents and visitors, damages agricultural crops and other plants, and affects livestock. For more information on gas hazards at the summit of Kīlauea, please see. ![]() As SO 2 is released from the summit, it reacts in the atmosphere to create the visible haze known as vog (volcanic smog) that has been observed downwind of Kīlauea. Large amounts of volcanic gas-primarily water vapor (H 2O), carbon dioxide (CO 2), and sulfur dioxide (SO 2)-are continuously released during eruptions of Kīlauea Volcano. High levels of volcanic gas are the primary hazard of concern, as this hazard can have far-reaching effects downwind. Hazard Analysis: This eruption at Kīlauea's summit is occurring within a closed area of Hawaiʻi Volcanoes National Park. Measurements from continuous gas monitoring stations downwind of Puʻuʻōʻō in the middle East Rift Zone remain below detection limits for SO 2, indicating that SO 2 emissions from Puʻuʻōʻō are negligible. Rift Zone Observations: No unusual activity has been noted along the East Rift Zone or Southwest Rift Zone low rates of ground deformation and seismicity continue along both. A sulfur dioxide (SO 2) emission rate of approximately 1,800 tonnes per day (t/d) was measured on September 30, 2022. Volcanic tremor remains above background levels. Summit Observations: Summit tiltmeters recorded slight inflationary deformation over the last 24 hours. Overflight measurements from October 5, 2022, indicated that the crater floor had seen a total rise of about 143 meters (469 feet), and that 111 million cubic meters (29.2 billion gallons) of lava had been effused since the beginning of this eruption on September 29, 2021. The active part of the lava lake has been steady over the past 24 hours. Halemaʻumaʻu Lava Lake Observations: Eruption of lava from the western vent into the active lava lake and onto the crater floor continued over the past 24 hours. No significant changes have been observed at the summit or in either rift zone. All recent eruptive activity has been confined to the crater. Wednesday, October 12, 2022, 6:08 AM HST (Wednesday, October 12, 2022, 16:08 UTC)ġ9☂5'16" N 155☁7'13" W, Summit Elevation 4091 ft (1247 m)Īctivity Summary: The summit eruption of Kīlauea Volcano, within Halemaʻumaʻu crater, continued over the past 24 hours. HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE Alert Level: WATCH, Color Code: ORANGE 16:08:51 UTC
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