Earthquakes

Magnitude 5+ Earthquakes – Global

7.7 Earthquake hits the Pagan region in the North Mariana Islands.

No tsunami warning has been issued.

5.2 Earthquake hits Vanuatu.

5.0 Earthquake hits North island, New Zealand.

5.0 Earthquake hits the Pagan region in the North Mariana Islands.

Storms and Floods

Tropical Storms – Roundup of Tropical Storms:

In the North Atlantic:

Invest 96L is an area of disturbed weather in the North Atlantic that has the potential for further tropical development.

Invest 97L is an area of disturbed weather in the North Atlantic that has the potential for further tropical development.

In the Eastern Pacific:

Invest 91E is an area of disturbed weather in the East Pacific that has the potential for further tropical development.

In the Western Pacific:

Tropical depression 06w (Six), located approximately 318 nm east of Manila, Philippines, is tracking north-northwestward at 18 knots.

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Disease

Puerto Rico is in the midst of a Zika epidemic

According to Centers for Disease Control and Prevention (CDC) ArboNET, as of July 7, Zika has been diagnosed in 5,582 people, including 672 pregnant women, in Puerto Rico according to a new report published today in the Morbidity and Mortality Weekly Report (MMWR). Positive tests for people with suspected Zika virus infection have increased from 14 percent in February to 64 percent in June. Positive tests through blood supply screening also increased, reaching 1.8 percent during the latest week of reporting, which started on July 3.

Many of the 5,582 people who tested positive for Zika virus infections were tested because they had symptoms of Zika. Because Zika infection during pregnancy can harm the developing fetus, pregnant women in Puerto Rico and other areas where Zika is spreading should be routinely tested during prenatal care whether or not they got sick. Of the 672 pregnant women, 441 (66 percent) experienced symptoms of Zika and 231 (34 percent) had no symptoms. Because approximately 80 percent of people infected with Zika do not have symptoms, the 672 pregnant women with evidence of Zika infection likely represent only a fraction of those who may be infected to date.

In addition, 21 people with confirmed or suspected Guillain-Barré syndrome in Puerto Rico had evidence of Zika virus infection or recent unspecified flavivirus infection, and one person died after developing severe thrombocytopenia (low blood platelet count).

Florida, USA  – Zika Virus

Four cases of Zika infection in Florida are very likely to have been caused by mosquitoes there, the State Department of Health said Friday — the first documented instances of local transmission in the continental United States.

The C.D.C. and Florida officials said that for now, the area of concern is limited to one square mile in the Wynwood neighbourhood of Miami, a gentrifying area with restaurants and art galleries just north of downtown.

Researchers had long predicted that the Zika virus would gain a toehold in the continental United States, most likely in Florida and along the Gulf Coast. While the outbreak is not expected to escalate sharply, its course is uncertain.

None of the four patients in Miami had traveled to Zika-affected areas in Latin America or the Caribbean.

Volcanos

Roundup of Global Volcanic Activity

Bezymianny (Central Kamchatka Depression): Last night, Tokyo VAAC reported an ash plume from the volcano at 20:40 UTC, based on satellite data. While it is entirely possible that activity at the lava dome of Bezymianny has picked up or that a collapse occurred which generated an ash plume, it could also be an ash plume from nearby Klyuchevskoy volcano. At the moment, the latter possibility seems more likely. Cloud cover prevented direct observation to confirm whether or not there is new activity at Bezymianny. KVERT has not issued an alert about the latter.

Cleveland (Aleutian Islands, Alaska): A recent overflight by staff of the Alaska Volcano Observatory (AVO) showed a small lava dome and active fumaroles inside the volcano’s summit crater. Incandescence could be seen at the vent of the dome, indicating that it is still active even though no explosions or other eruptive activity have taken place recently. The current aviation color code of Cleveland is yellow.

Fuego (Guatemala): The paroxysm at Fuego, which had reached its peak phase during the night of Thu-Fri (28-29 July) has ended. Starting from the early afternoon yesterday (local time), activity gradually decreased and the volcano’s activity has by now returned to intermittent smaller strombolian explosions. The lava effusion dropped as well. As of yesterday evening, the two lava flows on the SE side were still active and 1500 m long while explosions at the vent were still reaching 400 meters height; by this morning, the lava flows continued to be active, but had decreased to a few hundred of meters length and are probably going to stop soon. The recent paroxysmal eruptive phase (the 12th in 2016) with pulsating lava fountains and continuous ash emissions had lasted approx. 12 hours at its climax during the night 28-29 and morning of 29 July. It was described as one of the strongest so far this year.

Nevado del Ruiz (Colombia): Sporadic, usually small ash emissions continue to occur from time to time (every few days) such as last night (s. image attached). These explosions are likely phreatic in nature, i.e. driven by steam explosions inside the currently unstable hydrothermal system heated by an underlying magma intrusion at shallow depth. On 24 July, Washington VAAC reported a possible ash plume from Ruiz that rose to an altitude of 7.2 km (23,000 ft) a.s.l. On 26 July, an ash plume was detected that rose to an altitude of 6.9 km (22,000 ft) a.s.l. and drifted W.

Piton de la Fournaise (La Réunion): Signs that a new eruption of the volcano in the near future could be in the making have been increasing. In a bulletin yesterday, the volcano observatory (OVPF) reported elevated seismic activity, deformation and gas emissions that are consistent with the rise of magma to shallow depths. The recent seismic unrest began on 13 July; since then, OVPF recorded 163 shallow volcano-tectonic earthquakes (at depths within 2 km below the summit), including two swarms on 19 and 26 July, as well as 226 small collapses and rockfalls in the Dolomieu Crater. Also since 13 July ground inflation at Dolomieu crater (swelling of the edifice caused by magma intrusion) picked up significantly. It currently continues at rates similar to those recorded before the recent eruptions of 2015 and 2016 (rates around 1 mm distance gain / day). Last, but not least, gas measurements also show significant variations: since 21 July, a moderate increase in the average concentrations of H2S emissions has been detected from the summit – a volcanic gas released earlier than magma itself rises to the surface as the gas is very mobile and not very soluble at low pressure (shallow magma depth).

Colima (Western Mexico): Intermittent explosions continue at the volcano from time to time, but with comparably low intensity. No or little glow is visible from the volcano’s summit at night, suggesting that the magma column is relatively deep inside the conduit currently.