Magnitude 5+ Earthquakes – Global

5.6 Earthquake hits off the east coast of North Islands, New Zealand.

5.3 Earthquake hits Tonga.

5.1 Earthquake hits Kyushu, Japan.

5.0 Earthquake hits the Kuril Islands.

5.0 Earthquake hits the South Sandwich Islands.

5.0 Earthquake hits Kyushu, Japan.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

In the North Atlantic: Hurricane Gaston is located about 805 mi…1300 km W of faial island in the central Azores and about 895 mi…1440 km W of Lajes air base in the Azores with maximum sustained winds…90 mph…150 km/h. Present movement…ENE or 60 degrees at 20 mph…31 km/h.

Remnants of Tropical Depression Eight are located about 405 mi…655 km ENE of Cape Hatteras North Carolina and about 1005 mi…1620 km WSW of Cape Race Newfoundland with maximum sustained winds…30 mph…45 km/h. Present movement…NE or 50 degrees at 15 mph…24 km/h.

Tropical Storm Hermine is located about 250 mi…400 km SSW of Apalachicola Florida and about 275 mi…440 km WSW of Tampa Florida with maximum sustained winds…60 mph…95 km/h. Present movement…NNE or 20 degrees at 12 mph…19 km/h.

In the Eastern Pacific: Hurricane Lester is located about 835 mi…1345 km E of Hilo Hawaii and about 1030 mi…1655 km E of Honolulu Hawaii with maximum sustained winds…110 mph…175 km/h. Present movement…W or 275 degrees at 14 mph…22 km/h.

Tropical Storm Madeline is located about 150 mi…245 km SSW of South Point Hawaii and about 320 mi…515 km SSE of Honolulu Hawaii with maximum sustained winds…50 mph…85 km/h. Present movement…W or 260 degrees at 14 mph…22 km/h.

In the Western Pacific: Tropical storm 15w (Namtheun), located approximately 144 nm south-southeast of Kadena AB, Japan, is tracking east-northeastward at 14 knots.

In the Central Pacific: Invest 92C is an area of disturbed weather in the Central Pacific that has the potential for further tropical development.

Gl sst mm


Roundup of Global Volcanic Activity

Bardarbunga (Central Iceland): A magnitude 3.8 earthquake followed by dozens of small aftershocks occurred yesterday at 3 km depth under the volcano’s northeastern caldera rim (located under the ice cap). While it is possible that such earthquakes are caused by shallow magma intrusions, the present quakes at Bardarbunga are more likely result of volcano-tectonic movements, in this case the continuing subsidence of the caldera (a so-called slow caldera collapse) which has been going on since the large 2014-15 Holuhraun flank eruption. This also seems to reflect the opinion of Icelandic Met Office’s seismologists according to a local press article.

Katla (Southern Iceland): Following Monday’s large earthquakes, the volcano remains relatively calm seismically, with only small swarms of deep to shallow earthquakes occurring under the northern flank. According to experts, there is currently no sign of an eruption being imminent. Icelandic authorities are aware of the potential danger the next eruption of Katla represents (whether it occurs in the next months or only decades from now). A delegation of the volcanologists from the Icelandic Met Office was invited to discuss with a committee of the Icelandic Parliament about how to respond in case of an eruption. The biggest hazard are large-scale, potentially catastrophic glacial floods when an eruption occurs, which is likely going to be subglacial, as a result of rapid melting of ice by magma. A fast and wide-spread evacuation of all river beds draining from the Katla massif and alternative routes are likely a major topic in such plans. During the past days, an increase in glacial water into the Múlakvísl river, south of Mýrdalsjökull, has been detected. The river water has a strongly elevated content in hydrogen sulfide (H2S) and people are advised not to travel near the river due to gas pollution.