Magnitude 5+ Earthquakes – Global
5.7 Earthquake hits the Balleny Islands.
5.4 Earthquake hits Vanuatu.
5.3 Earthquake hits Fiji.
5.3 Earthquake hits near the east coast of Honshu, Japan.
5.2 Earthquake hits Tonga.
5.2 Earthquake hits the Santa Cruz Islands.
In the South Indian Ocean:
Tropical cyclone Edilson is located approximately 160 nm south-southeast of port Louis, Mauritius, iss tracking south-southwestward at 16 knots.
In the South Pacific Ocean:
Tropical cyclone Edna is located approximately 264 nm south of Noumea, New Caledonia, is tracking southward at 21 knots. The final warning on this system has been issued by the joint typhoon warning centre, Pearl Harbour, Hawaii. The system will be closely monitored for signs of regeneration.
Human infection with avian influenza A(H7N9) virus – update
On 4 February 2014, the National Health and Family Planning Commission (NHFPC) of China notified WHO of eight additional laboratory-confirmed cases of human infection with avian influenza A(H7N9) virus, including two deaths.
Chikungunya outbreak in Caribbean expanding
The European Centre for Disease Prevention and Control announced on Monday that 247 new cases of Chikungunya fever were reported in the Caribbean in the past week alone and the outbreak continues to expand.
The epidemiological data regarding the Chikungunya outbreak shows that it began in Saint Martin and is continuing to spread throughout the Caribbean. Most of the areas already affected have seen an increasing number of cases.
Chikungunya fever is a mosquito-borne viral disease. The chikungunya virus causes fever-like symptoms, including fever, headache, muscle pain, fatigue, rash, nausea and joint swelling. There is no cure for Chikungunya and treatment focuses on alleviating the symptoms.
Roundup of Global Volcanic Activity:
Etna (Sicily, Italy): Lava continues to flow from the fissure vent at the eastern base of the New SE crater. Accompanied by slowly rising tremor, an overall gradual increase of the activity can be noted. The front of the old lava flow is stopped at 1660 m while the active lava flow is descending on the upper wall of the valle del Bove. Ash emission continues from the summit vent of the New SE crater.
Nishino-shima (Volcano Islands): (5 Feb) New images from an overflight on 3 February confirm that the activity on the former new island continues steadily. Over the past weeks, the vent has been feeding several active lava flow fronts, that enlarged the land covered by new lava in more or less all directions. In particular, there are two active flows relatively close to the vent which have been heading out towards the southeast and formed a small almost closed bay with green-orange discoloured water inside. The water color is a result of dissolved volcanic gasses and lava fragments in suspension. In addition to the ongoing lava effusion, strombolian explosions occur from the main vent as well, which has built a small perfectly circular cone.
San Cristobal (Nicaragua): A series of small, probably phreatic explosions occurred at the volcano’s summit crater early on Tuesday. INETER indicated the activity took place between 6:41 – 8:50 local time and consisted of at least 2 explosions, which generated a small steam and ash plume rising to about 200 m height. INETER believes that these eruptions were an isolated event and not sign of a new eruptive phase with new magma involved, but most likely caused by the sudden vaporization of overheated infiltrated rain water. The alarm level of the volcano was not raised and no particular measures are planned.