August 02 , 2020. EN. Hawaii : Pāhala earthquake , Russia / Kuril Islands : Ebeko , Indonesia : Dukono , Ecuador : Sangay , Costa Rica : Turrialba .
August 02 , 2020.
Hawaii , Pāhala earthquake :
USGS HVO Press Release , Magnitude-4.2 earthquake northeast of Pāhala, Island of Hawai‘i.
The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake located on the south part of the Island of Hawai‘i on Monday, August 1, at 10:03 a.m., HST.
The earthquake was centered about 8 km (5 miles) northeast of Pāhala, at a depth of 32 km (20 miles).
Light shaking, with maximum Intensity of IV on the Modified Mercalli Intensity Scale, has been reported across parts of the Island of Hawai‘i. At that intensity, significant damage to buildings or structures is not expected.
According to HVO geophysicist, Jefferson Chang, the earthquake had no apparent effect on Kīlauea or Mauna Loa volcanoes. « This earthquake appears to be part of the seismic swarm under the Pāhala area, which has been going on for over a year. Out of over ten thousand earthquakes that were detected in the area, a few have been large enough to be felt. We see no detectable changes in activity at the summits or along the rift zones of Mauna Loa or Kīlauea as a result of these earthquakes. » HVO continues to monitor Hawaiian volcanoes for any changes.
Earthquakes beneath Kīlauea’s lower Southwest Rift Zone are produced mostly at depths of 25–40 km (15–25 mi), beneath the town of Pāhala and extending about 10 km (6 mi) offshore. Earthquakes in this region have been observed at least as far back as the 1960s and are posited to be related to deep magma pathways under the island.
Source : USGS
Russia / Kuril Islands , Ebeko :
50.69 N, 156.01 E;
Elevation 3792 ft (1156 m)
Aviation Colour Code is ORANGE
A moderate eruptive activity of the volcano continues. Ash explosions up to 19,700 ft (6 km) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft and airport of Severo-Kurilsk.
A moderate explosive eruption of the volcano continues. According to visual data by volcanologists from Severo-Kurilsk, explosions sent ash up to 3.5 km a.s.l. on 26-30 July; ash clouds drifted to the southern and eastern directions of the volcano. Satellite data showed a thermal anomaly over the volcano on 23-24, and 28 July.
VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA).
Issued: July 30 , 2020
Volcano: Ebeko (CAVW #290380)
Current aviation colour code: ORANGE
Previous aviation colour code: orange
Notice Number: 2020-169
Volcano Location: N 50 deg 41 min E 156 deg 0 min
Area: Northern Kuriles, Russia
Summit Elevation: 3791.68 ft (1156 m)
Volcanic Activity Summary:
A moderate eruptive activity of the volcano continues. According to visual data by volcanologists from Severo-Kurilsk, explosions sent ash up to 2.5 km a.s.l., an ash cloud is drifting to the north-east of the volcano.
Volcanic cloud height:
8200 ft (2500 m) AMSL Time and method of ash plume/cloud height determination: 20200730/2108Z – Visual data
Other volcanic cloud information:
Distance of ash plume/cloud of the volcano: 2 mi (3 km)
Direction of drift of ash plume/cloud of the volcano: NE
Time and method of ash plume/cloud determination: 20200730/2108Z – Visual data
Source : Kvert.
Photos : Yuri Demyanchuk , Leonid Kotenko, / volcanodiscovery .
Indonesia , Dukono :
VOLCANO OBSERVATORY NOTICE FOR AVIATION – VONA.
Issued : August 01 ,2020
Volcano : Dukono (268010)
Current Aviation Colour Code : ORANGE
Previous Aviation Colour Code : orange
Source : Dukono Volcano Observatory
Notice Number : 2020DUK66
Volcano Location : N 01 deg 41 min 35 sec E 127 deg 53 min 38 sec
Area : North Maluku, Indonesia
Summit Elevation : 3933 FT (1229 M)
Volcanic Activity Summary :
Eruption with volcanic ash cloud at 23h12 UTC (08h12 local).
Volcanic Cloud Height :
Best estimate of ash-cloud top is around 6173 FT (1929 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer.
Other Volcanic Cloud Information :
Ash-cloud moving to west
Eruption and ash emission is continuing
Source : Magma Indonésie .
Photo : Rainwater Media via Sherine France.
Ecuador , Sangay :
DAILY REPORT OF THE STATE OF THE SANGAY VOLCANO, Saturday August 01, 2020.
Surface activity level: High, Surface trend: No change.
Internal activity level: High, Internal trend: No change.
Seismicity: From July 31, 2020, 11:00 am to August 01, 2020, 11:00 am:
Long period type events: 16
Rains / lahars: There were several episodes of moderate to heavy rains over the volcano, which generated continuous signals associated with secondary lahars.
* In case of heavy rains, lahars can be generated in the Volcán, Upano and other tributaries. *
Emission / Ash Column: No emissions were observed and no VAAC alerts were recorded.
Other monitoring parameters: No changes.
Observations: Due to the cloud cover of the volcano, there are no reports of activity at the surface level.
Niveau d’alerte: jaune.
Source et photo : IGEPN.
Costa Rica , Turrialba :
Turrialba volcano activity report
July 31, 2020.
On July 31, 2020 at 08:10 local time, an eruption was recorded on the Turrialba volcano, with a column that rose 200 meters above the height of the crater and 3,540 meters above sea level. (meters above sea level, 11611.2 ft).
Duration of activity: ongoing.
The winds are blowing west.
Ash falls reported in: Unreported ash falls
Sulfur odor reported in: Sulfur odor not reported.
Source : Ovsicori .