Know possible hazards in your area with web app ‘Hazard Hunter’

Marje Pelayo   •   July 16, 2019   •   9294

MANILA, Philippines – Want to know potential hazards within your area?

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) on Tuesday (July 16) launched a web application dubbed as ‘Hazard Hunter’ which provides the public with information on the possible dangers that may happen in a specific area like earthquake, flood or even volcanic eruption.

‘Hazard Hunter’ is a web-based application that can be accessed on desktop, laptop or in smart phones.

To access, just load https://hazardhunter.georisk.gov.ph/ on your web browser.

A welcome message will lead you to the Hazard Hunter official page.

You will be asked to proceed until you see the full map of the Philippines.

Click on the menu bar then several options on the type of hazards that may be present in your area will appear – seismic for earthquakes, volcanic for volcanoes and hydro-meteorological for flood and storm-related hazards.

Click on the type of hazard then select an area by pointing the cursor to the place of inquiry on the map.

Double click on the area of choice.

The system will immediately load the results that will flash on the right side of the screen.

For instance, Baseco compound in Manila has a population of about 60,000 people.

Based on the app’s reading, Baseco is about 12 kilometers away from the West Valley Fault.

Residents in Baseco may feel ground shaking of up to intensity 8 once the West Valley Fault moves in an event called the Big One.

The area is prone to liquefaction and could suffer from up to four-meter-high tsunami as it is near Manila Bay.

Based on the app, Baseco is less likely to be affected if ever the nearest active volcano, Mount Taal in Batangas, erupts.

Taal Lake is about 58 kilometers away from Baseco.

Baseco is a flood-prone area and floodwater can go as high as two meters and can take up to three days to subside.

During the onset of a severe tropical cyclone, the area could suffer from storm surge as high as 4 meters.

But there is no possibility of a landslide in the area.

The app also has detailed recommendations or suggestions for a plan of action during a specific hazard.

Science and Technology Undersecretary and PHIVOLCS OIC Renato Solidum believes ‘Hazard Hunter’ will enable the public to prepare and plan ahead of a natural disaster.

Government agencies will also be guided for appropriate actions to be taken to minimize or prevent the loss of lives and damage to properties.

“Hindi naman masama na may hazards diyan. What is important is that the hazard is recognized so that the developer can develop approaches to lessen the impact, to mitigate the possible impact,” Solidum noted.

Solidum said even his own house sits on a location that is hazard-prone but recognizing the dangers enabled him to plan for his and his family’s protection.

“Tinaasan ko yung bahay. Ginawa kong three floors para hindi ako mamatay sa baha (What I did was I elevated my house. I made it into three floors to keep me safe from the flood),” he said.

“Inayos ko yung foundation ng building para sa shaking ng liquefaction. So mga ganung klaseng real life application magagamit (ang Hazard Hunter) (I aligned the foundation of the building in case of shaking during liquefaction. During those real-life applications, [Hazard Hunter] can be useful),” he added.

Before the end of the year, PHIVOLCS plans to launch the mobile version of the website. – with details from Rey Pelayo

Several evacuees in Batangas City evacuation center decide to stay despite clearance from LGU

Maris Federez   •   January 28, 2020

Evacuees in the 12 towns of Batangas have started to return to their homes after the Philippine Institute of Volcanology and Seismology (Phivolcs) lowered the alert level of the Taal Volcano from 4 to 3.

Several evacuees in Batangas City, however, opted to stay behind for fear of a major explosion of Taal.

Lilibeth Arajo, a resident from the town of Taal who is now in an evacuation in Batangas City, said they are still awaiting the final decision of the authorities to really be sure that it is indeed safe to go home.

She added that their house is on the outskirts of Taal and transportation is not easily accessible.

Another evacuee said it is not yet certain that there will be immediate livelihood or source of income for them should they go home now. — (with details from Vincent Arboleda) /mbmf

Thick, white steam from Taal means volcanic materials are rising — PHIVOLCS

Marje Pelayo   •   January 24, 2020

MANILA, Philippines — Taal Volcano spewed anew a tall column of thick, white steam early Friday morning (January 24).

Experts from the Philippine Institute of Volcanology and Seismology (PHIVOLCS) explained that the white steam-laden plumes of about 500 meters high that drifted towards the southwest direction signify that the heating up of volcanic materials underneath the crater has intensified.

In a press briefing, Volcano Monitoring Chief Ma. Antonia Bornas explained that the thick steam means that excessively hot volcanic materials are rising, causing the water to boil.

Mayroon po kasi tayo talagang magma na umaakyat at ito po talaga ang binabantayan natin (The magma is still moving up and this is what we are monitoring at present),” Bornas said.

Iyong steam ito po ay mula sa ground water or sa tubig ng lawa na sumisipsip sa ilalim ng lupa nung nagkaroon tayo ng fissuring at ito po ay nalilikha sa ibabaw ng magma dahil napakainit po nito at ibinubuga iyong steam (The thick steam came from ground water or the lake water that is drying up in the event of fissuring. There is evaporation going on top of the very hot magma thus steam is produced),” she added.

Bornas also noted the increase in sulfur dioxide (SO2) emission from 144 tons per day on Thursday (January 23) to an average of 224 tons per day on Friday.

Still, PHIVOLCS stressed that the high frequency of volcanic tremors indicates that the magma is continuously rising and may still result to an eruptive explosion.

Based on PHIVOLCS monitoring, Taal Volcano has generated 486 volcanic earthquakes including four low-frequency earthquakes.

The agency said Alert Level 4 still remains in effect over Taal Volcano which means a hazardous explosive eruption is possible within hours to days.

PHIVOLCS reiterates that forced evacuation of Taal Volcano island remains necessary as well as other identified high-risk areas where fissures are being observed.

Continuous tremors recorded, Taal Volcano still swollen — PHIVOLCS

Marje Pelayo   •   January 23, 2020

A handout photo made available by the Philippines’ Office of Civil Defense shows an aerial view of the Taal Volcano crater in Batangas province, south of Manila, Philippines 21 January 2020. The alert level of Taal Volcano remains at four following its eruption on 12 January, as authorities continue to implement measures to keep citizens from returning to their homes in danger zones around the volcano. EPA-EFE/OFFICE OF CIVIL DEFENSE

MANILA, Philippines – Activities in the main crater of Taal Volcano may have been weaker but the signs of rising magma are still visible, according to the latest report from the Philippine Institute of Volcanology and Seismology (PHIVOLCS).

Based on PHIVOLCS’ 8:00 AM advisory (January 23), Taal volcano has generated weak to moderate emissions of white steam about 50 to 500 meters high from the main crater.

Emissions of sulfur dioxide (SO2) was measured at an average of 141 tonnes/day.

For the past 24 hours, PHIVOLCS recorded 467 volcanic earthquakes at the Taal Volcano network which means such intense activity likely signifies continuous magmatic intrusion beneath the Taal edifice.

PHIVOLCS emphasized that such may lead to further eruptive activity.

Alert Level 4 still remains in effect over Taal Volcano, according to the agency, as hazardous explosive eruption is still possible within hours to days.

Volcano experts strongly reiterate total evacuation of Taal Volcano Island and high-risk areas as identified in the hazard maps.

This covered areas within the 14-km radius from the Taal main crater and along the Pansipit River Valley where fissuring has been observed.

PHIVOLCS is continually monitoring the eruption and vows to provide updates of further developments in Taal volcano region.

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