Kaʻū Trojan Girls fought hard with three close sets, succumbing to Hilo in five. Photo by Julia Neal |
KAʻŪ BATTLED HILO HIGH IN GIRLS VOLLEYBALL THURSDAY, the Trojans finally succumbing to the Vikings at the end of five sets. JV Trojans also took the loss. In varsity play:
The JV team is comprised of Deijah Cabanilla-Nogales, Lily Dacalio, Christy Girl Grohs, Megan Pierpont, Kalesha Hashimoto, Alazae Forcum, Wailea Kainoa Haili-Barawis and Dhaylee Cabreros.
Kea'au comes to Kaʻū on Tuesday, Sept. 24, following Thursday's home match against Hilo. Photo by Julia Neal |
The first phase of the eruption began between 9 and 10 p.m. HST on Sunday evening. Infrasound sensors in HVO's monitoring network recorded strong signals indicative of gas or steam venting. At the same time, HVO's seismometers recorded weak but sustained low frequency tremor. Although an eruption could not be confirmed visually Sunday night by webcams or satellite thermal data due to heavy rainfall, the geophysical data indicated that an eruption could be taking place. That night, some residents in nearby communities also reported strong sulfur or burning smells.
The next morning, Monday, Sept. 16, HVO scientists on a helicopter overflight confirmed that a small eruption had occurred on Kīlauea's MERZ between Makaopuhi Crater and Nāpau Crater. This first fissure eruption was small and covered less than 4 acres. Lava was no longer flowing on the surface as of Monday, but magma was still moving underground as detected by seismometers, tiltmeters and GPS.
Phase two of the eruption began Monday evening around 6 p.m. HST. The onset of this eruptive activity was detected in NOAA GOES satellite thermal imagery and HVO webcam imagery. Interestingly, no changes were detected in other monitoring datasets. Fissures from this phase of the eruption produced lava fountains and flows that gradually decreased through the night. But activity would soon resume.
The third eruptive phase then began between 4 and 5 a.m. HST on Tuesday, Sept.17. This onset was detected using a combination of infrasound signals, GOES satellite thermal anomaly, and webcam imagery. After sunrise, HVO scientists on a helicopter overflight observed several lava fountains approximately 10 meters (yards) high that were generating lava flows on the floor of Nāpau Crater. This eruptive phase was more vigorous and longer lived and continued and gradually decreasing levels through Wednesday afternoon.
The eruption continues as this article is published. HVO webcam views are available from our website including a new live view of Nāpau Crater. How long will the eruption last? Examining history, numerous MERZ eruptions took place during the 1960s–1970s, most of which lasted less than one day to about two weeks. An eruption near Nāpau Crater in 1997 lasted two days. The nearby 2011 Kamoamoa eruption lasted five days. Of course, there have also been much longer-lived MERZ eruptions as well. Maunaulu lasted five years and Puʻuʻōʻō lasted 35 years. Time will tell!
Looking at the bigger picture, this eruption signals a significant and fascinating change in activity at Kīlauea. One year ago this week, a Kīlauea summit eruption in Halemaʻumaʻu was just ending. That eruption, which lasted from Sept. 10-16, 2023, was the fifth in a series of eruptions within Halemaʻumaʻu since Dec. 2020. On June 3, 2024, the first Kīlauea eruption outside the summit caldera since 2018 occurred several miles southwest of Halemaʻumaʻu. And now, after a series of seismic swarms and magmatic intrusions beneath the upper East Rift Zone over the past few months, we are witnessing the first MERZ eruption since 2018. It seems that a new era of Kīlauea eruptions has begun.
Kīlauea is erupting. Its USGS Volcano Alert level is WATCH.
On Saturday, Sept.14, magma intruded into the middle East Rift Zone region of Kīlauea. A brief eruption occurred the night of Sept. 15, just west of Nāpau Crater within Hawaiʻi Volcanoes National Park. The eruption resumed late in the day on Sept. 16, and continued through the night, decreasing in vigor until about 4 a.m. HST, Sept. 17, when new vents opened to the east in Nāpau Crater. At 3:15 p.m. HST on Sept. 17, the Nāpau Crater vents likely ceased, with eruptive activity shifting west of the crater and generating lava flows over the northwest wall and into Nāpau Crater. Multi-day fissure eruptions in this area are not unusual and current eruptive activity appears to be linked to supply of magma from the summit. The most recent sulfur dioxide emission rate for the eruption was 10,000 tonnes per day, measured on Sept. 18.
Mauna Loa is not erupting. Its USGS Volcano Alert Level is at NORMAL.
Two earthquakes were reported felt in the Hawaiian Islands during the past week: a M3.1 earthquake 23 km (14 mi) W of Volcano at 8 km (5 mi) depth on Sept. 15 at 1:15 p.m. HST and a M4.3 earthquake 6 km (3 mi) SSW of Volcano at 0 km (0 mi) depth on Sept. 14 at 4:25 p.m. HST.
HVO continues to closely monitor Kīlauea and Mauna Loa.