An earthquake with a magnitude of 6.7 rocked Malang, East Java today, Saturday (10/4/2021).
The Meteorology, Climatology, and Geophysics Agency (BMKG) through its official website informed that the earthquake was also felt in Yogyakarta, West Lombok, and several areas in Bali.
As for Yogyakarta, the Modified Mercalli Intensity or MMI scale is at scale III. Areas such as Nganjuk, Ponorogo, Madiun, Ngawi, West Lombok, Mataram, Kuta, Jimbaran, Denpasar are on the same level.
Meanwhile, for scale II, namely in Denpasar, Mojokerto, Klaten, North Lombok, Sumbawa, Tabanan, and Klungkung.
Meanwhile, scale IV is felt in Karangkates, Malang. The Blitar, Trenggalek, and Jombang areas are at the III and IV scale levels.
As for the explanation, the scale I MMI Vibration is not felt except in extraordinary circumstances by several people. Scale-II vibrations felt by some people, light objects hanging sway.
For scale III, the vibration is felt real in the house. It felt a tremor as if a truck had passed.
While on scale IV, during the daytime it is felt by many people in the house, outside by several people, pottery is broken, windows/doors are creaking and walls are sounding.
This is what should be done before, just before, and after an earthquake.
- Ensure that the structure and position of your house can avoid hazards caused by earthquakes, such as landslides or liquefaction. Evaluate and renovate the structure of your building to avoid the dangers of earthquakes.
- Know the environment in which you work: pay attention to the location of doors, elevators, and emergency stairs. Also, know where the safest place to take cover.
- Learn to do first aid and fire extinguishers.
- Write down important telephone numbers that can be reached in the event of an earthquake.
- Arrange the furniture so that it is firmly attached to the wall to avoid falling, collapsing, shifting during an earthquake.
- Set the heavy object as far as possible at the bottom. Check the stability of hanging objects that could fall during an earthquake
- Store flammable materials in a place that is not easily broken to avoid fire.
- Always turn off water, gas, and electricity when not in use.
- Prepare the tools that must be in every place: First aid kit, flashlight/battery light, radio, food supplements, and water.
When an Earthquake Occurs:
- If you are in a building: protect your body and head from collapsed buildings by hiding under tables, find the safest place from rubble and shocks, run outside if it is still possible.
- If you are outside a building or open area: Avoid buildings that are around you such as buildings, electric poles, trees. Pay attention to where you stand, avoid it if there is soil fracture.
- If you are driving: get out, get off and away from the car avoid it in case of a shift or fire.
- If you live or are on the beach: stay away from the beach to avoid a tsunami hazard.
- If you live in a mountainous area: in the event of an earthquake avoid areas where landslides may occur.
After the Earthquake:
- If you are inside a building: leave the building in an orderly manner; do not use the elevator or the elevator, use the normal stairs; check for injuries, do first aid; telephone or ask for help if there is a serious injury to you or around you.
- Check your surroundings: in case of fire, in case of gas leakage, in case of short circuit. Check the flow and water pipes, check if there are dangerous things.
- Do not enter a building that has been hit by an earthquake, because there may still be ruins.
- Do not walk in the area around the earthquake, there may still be a follow-up hazard.
- Listen to information about earthquakes on the radio (in case of aftershocks). Do not be easily provoked by issues or news that are not clear sources.
- Fill out a questionnaire given by the relevant agency to find out how much damage was caused.
- Don’t panic and don’t forget to always pray to God for the safety and safety of all of us.