Timely and Reliable Philippine Weather Forecast

Philippine Standard Time

Volcanic Eruption

Issued on January 25, 2018

As of 8:00 AM

MAYON VOLCANO BULLETIN 25 January 2018 8:00 AM PDF Print

Between 06:02 AM yesterday to 03:00 AM this morning, six (6) episodes of intense but sporadic lava fountaining from the summit crater lasting nine (9) minutes to fifty-eight (58) minutes occurred. The lava fountains reached 400 meters to 500 meters high and generated ash plumes that reached 3 kilometers to 5 kilometers above the crater. The events fed lava flows on the Mi-isi and Bonga Gullies, sprayed near-vent lava spatter, and fed incandescent rockfall on the summit area. Pyroclastic density currents or PDCs on gullies heading the Mi-isi, Lidong/Basud, and Buyuan Channels were also observed. The runout of PDCs on the Buyuan Channel is now exceeding 5 kilometers from the summit crater.

A total of thirteen (13) tremor events, six (6) of which correspond to the lava fountaining events, two (2) episodes of pyroclastic density current or PDC generation from lava collapse, and numerous rockfall events were recorded by Mayon's seismic monitoring network. Rockfall events were generated by the collapsing lava front and margins of the advancing lava flow on the Mi-isi Gully and by shedding from the summit dome onto the Bonga Gully. Currently, the Mi-isi and Buyuan lava flows have advanced to three (3) kilometers and one (1) kilometer, respectively, from the summit crater. Sulfur dioxide gas emission was measured at an average of 1252 tonnes/day on 24 January 2018. Electronic tilt and continuous GPS measurements indicate a sustained swelling or inflation of the edifice since November and October 2017, consistent with pressurization by magmatic intrusion.

Alert Level 4 remains in effect over Mayon Volcano. The public is strongly advised to be vigilant and desist from entering the eight (8) kilometer-radius danger zone, and to be additionally vigilant against pyroclastic density currents, lahars and sediment-laden streamflows along channels draining the edifice. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ash from any sudden eruption can be hazardous to aircraft. DOST-PHIVOLCS maintains close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.


Issued on January 22, 2018

As of 1:00 PM

Issued on January 16, 2018

As of 12:00 AM

MAYON VOLCANO BULLETIN (UPDATED) 15 January 2018 1:30 P.M. 

Two lava collapse events occurred today at Mayon Volcano, Albay that produced rockfall and small-volume pyroclastic density currents. These occurred at 09:41 AM and 10:05 AM that lasted five (5) minutes and seven (7) minutes, respectively, based on seismic record. These events appear to have originated from the lava front and produced an ash cloud that drifted to the southwest sector. Ashfall were reported in Brgys. Travesia, Muladbucad Grande, Maninila, Masarawag, Poblacion, Iraya, Ilawod, Calzada, Inamnan Grande, Inamnan Pequeno, Maguiron, Quitago and Mauraro in the municipality of Guinobatan; Brgys. Cabangan, Anoling, Sua, Tumpa, Quirangay, Gapo, Sumlang, Brgys. 1 to 7, in the municipality of Camalig. A degassing event at 11:07 AM that lasted eight (8) minutes produced a grayish to dirty white ash column with a maximum of height of approximately 1000 meters above the summit before drifting west-southwest. Alert Level 3 remains in effect over Mayon Volcano, which means that it is currently in a relatively high level of unrest as magma is at the crater and hazardous eruption is possible within weeks or even days. The public is strongly advised to be vigilant and desist from entering the six (6) kilometer-radius Permanent Danger Zone (PDZ) and the 7-km Extended Danger Zone (EDZ) on the southern flanks due to the danger of rockfalls, landslides and sudden explosions or dome collapse that may generate hazardous volcanic flows. Increased vigilance against pyroclastic density currents, lahars and sediment-laden streamflows along channels draining the edifice is also advised. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ash from any sudden eruption can be hazardous to aircraft. Based on the seasonal wind pattern, ash fall events may most likely occur on the southwest side of the volcano. DOST-PHIVOLCS maintains close monitoring of Mayon Volcano and any new development will be communicated to all concerned stakeholders.


Issued on December 15, 2017

As of 10:30 AM

RAINFALL ADVISORY No. 2 #VIS_PRSD Iloilo Radar
Weather System: TS “URDUJA”
Issued at 10:30 AM, 15 December 2017

Light to moderate with occasional heavy rains affecting portions of #Capiz; northern part of #NegrosOccidental and of #Iloilo which may continue for 2-3 hours.


Issued on November 24, 2015

As of 6:55 AM

This is a notice for the raising of the Alert Level for Kanlaon Volcano (10.41167°N, 123.13167°E) from Alert Level 0 to Alert Level 1.

At 9:55 P.M. yesterday (November 23, 2015), a steam explosion from Kanlaon’s summit crater occurred for approximately 8 minutes based on visual observation. The event was recorded by the Kanlaon Volcano seismic network as an explosion signal beginning at 9:30 P.M. and lasted 30 minutes. The explosion produced a 1.0 – 1.5 kilometer-high white plume above the summit before drifting towards the southwest. Audible rumbling sound was heard in Sitio Mananawin and Sitio Upper Pantao, Brgy. Pula, Canlaon City, Negros Oriental. Only four (4) volcanic earthquakes had been recorded during the past week by the Kanlaon Network, but after the explosion, the network recorded volcanic tremor that lasted for five (5) hours. Continuous emission of steam with minor ash from the summit crater has been observed this morning, while previously there was none.

Alert Level 1 status now currently prevails over Kanlaon Volcano, which means that it is at an abnormal condition and has entered a period of unrest. The local government units and the public are strictly reminded that entry into the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the further possibilities of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ejecta from any sudden phreatic eruption can be hazardous to aircraft. DOST-PHIVOLCS is closely monitoring Kanlaon Volcano’s activity and any new development will be relayed to all concerned.


Issued on November 11, 2015

As of 2:59 PM

‪#‎VIS_PRSD‬
@ 2:59 PM 11 Nov 2015

 

Light to moderate rains affecting over ‪#‎NegrosOriental‬(Pamplona, Amlan, Sibulan) and nearby areas which may continue for 30mins to an hour.


Issued on October 16, 2015

As of 10:43 PM

RR Update ‪#‎VIS_PRSD‬
@ 10:43 PM 16 Oct 2015
Lgt-mod rains affecting over ‪#‎NegrosOccidental‬(Cauayan, Ilog, Himamaylan City, Binalbagan, Isabela); ‪#‎NegrosOriental‬(Guinhulngan City,La Libertad, Canlaon City, Vallehermoso, Basay, Pamplona) & nearby areas w/c may continue for 30min-an hour.
Xpct lgt-mod rains over ‪#‎Cebu‬(Pinamungahan, Toledo City) w/in 30min-an hour .


Issued on August 11, 2015

As of 10:00 AM

THUNDERSTORM WATCH #NCR_PRSD 
Issued at: 10:00 AM 11 August 2015

Thunderstorm is MORE likely to develop over NationalCapitalRegion within 12 hours. All are advised to continue monitoring for updates.


Issued on June 19, 2015

As of 4:00 PM

BULUSAN VOLCANO ADVISORY
19 June 2015
4:00 PM

Bulusan Volcano (12.7667°N, 124.0500°E) generated a steam-driven explosion at 2:55 PM today. The event lasted for approximately 7 minutes based on the seismic record and produced a 1.5 kilometer-high grayish ash plume that drifted towards the west-southwest. A low-level distended ash cloud on the upper northwest flank, possibly from a short pyroclastic flow, was also observed.

Alert Level 1 (abnormal) status is maintained over Bulusan Volcano. This indicates that hydrothermal processes are underway beneath the volcano that may lead to more steam-driven eruptions. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s summit as ejecta from any sudden phreatic eruption can be hazardous to aircraft. Furthermore, people living within valleys and along river/stream channels especially on the northwest sector of the edifice (Juban) should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s activity and any new development will be relayed to all concerned.


Issued on June 15, 2015

As of 1:46 PM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

15 Jun 2015 - 01:46:35 PM

Location                       :

16.42°N, 122.14°E - 008 km N 71° W of Dilasag (Aurora)

Depth of Focus (Km)     :

012

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.2

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

11.20a 
2015_0615_0546_M32D012_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

15 June 2015 - 01:58 PM

Prepared by                  :

JVF/KMG/RSM/EQA

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 

 


As of 9:58 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

15 Jun 2015 - 09:58:49 AM

Location                       :

14.81°N, 120.06°E - 016 km S 11° W of San Antonio (Zambales)

Depth of Focus (Km)     :

022

Origin                           :

TECTONIC

Magnitude                   :

Ms 2.4

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0615_0158_M24D022_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

15 Jun 2015 - 10:06 AM

Prepared by                  :

JVF/KMG/RSM/VHG/EQA/EAM

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 

 


Issued on June 12, 2015

As of 4:54 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

12 Jun 2015 - 04:54:39 AM

Location                       :

07.98°N, 127.23°E - 087 km N 59° E of Baganga (DAVAO ORIENTAL)

Depth of Focus (Km)     :

046

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.8

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

9.11 
2015_0611_2054_M38D045_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

12 Jun 2015 - 05:04 AM

Prepared by                  :

MCE / RGA / MCA

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 

 


Issued on June 11, 2015

As of 12:44 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

11 Jun 2015 - 12:44:00 AM

Location                       :

17.28°N, 119.79°E - 071 km S 62° W of Santa Catalina (Ilocos Sur)

Depth of Focus (Km)     :

027

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.0

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0610_1644_M30D026_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

11 Jun 2015 - 12:59 AM

Prepared by                  :

EBO/NMC/MTM

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 

 


Issued on June 10, 2015

As of 7:44 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

10 Jun 2015 - 07:44:13 AM

Location                       :

10.68°N, 124.94°E - 008 km N 17° W of Mahaplag (Leyte)

Depth of Focus (Km)     :

023

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.3

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0609_2344_M33D022_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

10 Jun 2015 - 07:53 AM

Prepared by                  :

KMG/MCA/DSS

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 


Issued on June 9, 2015

As of 3:09 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

09 Jun 2015 - 03:09:44 AM

Location                       :

09.94°N, 126.71°E - 063 km N 75° E of General Luna (Surigao Del Norte)

Depth of Focus (Km)     :

007

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.5

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0608_1909_M35D006_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

09 Jun 2015 - 03:21 AM

Prepared by                  :

GGN / AAP / HCP

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 


Issued on May 29, 2015

As of 1:24 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

29 May 2015 - 01:24:09 AM

Location                       :

09.65°N, 123.48°E - 013 km S 26° W of Dalaguete (Cebu)

Depth of Focus (Km)     :

016

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.4

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0528_1724_M34D016_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

29 May 2015 - 01:39 AM

Prepared by                  :

JVF/MTM/RRS

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 


Issued on May 13, 2015

As of 5:00 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

13 May 2015 - 05:00:19 AM

Location                       :

12.43°N, 125.59°E - 029 km N 19° E of San Policarpo (Eastern Samar)

Depth of Focus (Km)     :

025

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.8

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0512_2100_M38D025_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

13 May 2015 - 05:09 AM

Prepared by                  :

EBO/RGA/NMG

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 


As of 5:05 AM

DEPARTMENT OF SCIENCE AND TECHNOLOGY
PHILIPPINE INSTITUTE OF VOLCANOLOGY AND SEISMOLOGY
 EARTHQUAKE INFORMATION NO. :  1  
PHIVOLCS Bldg, C.P. Garcia Avenue, U.P.- Diliman, Quezon City, PHILIPPINES
Tel.: 426-1468  Fax: 927-1087

Date/Time                    :

13 May 2015 - 05:05:49 AM

Location                       :

12.33°N, 125.68°E - 025 km N 48° E of San Policarpo (Eastern Samar)

Depth of Focus (Km)     :

027

Origin                           :

TECTONIC

Magnitude                   :

Ms 3.8

Description: EPICENTRAL MAP

Reported Intensities     :

 

 

 

 

8.11 
2015_0512_2105_M38D027_B1
 

Expecting Damage       :

NO

Expecting Aftershocks  :

NO

Issued On                      :

13 May 2015 - 05:17 AM

Prepared by                  :

EBO/RGA/NMD

IMPORTANT

 This will be the only bulletin issued unless additional information     
 becomes available

 


Issued on May 7, 2015

As of 8:00 AM

BULUSAN VOLCANO BULLETIN 07 May 2015 8:00 A.M. This serves as a notice for the raising of Bulusan Volcano’s status from Alert Level 0 (normal) to Alert Level 1 (abnormal). At 9:46 PM yesterday (May 6, 2015), Bulusan Volcano (12.7667°N, 124.0500°E) in Sorsogon Province generated a steam-driven explosion from a vent on its northwest upper slopes that propelled an ash plume approximately 250 m high before it drifted west. The explosion event lasted 3.5 minutes based on the seismic records. Traces of ash were observed in Sitio Tulay of Brgy. Bagsangan, Cogon, Monbon, and Tinampo in Irosin, Sorsogon. This event was preceded by a similar steam-driven explosion from the same fissure vent on May 1, 2015 that lasted 5 minutes. Such  explosions are typical to Bulusan during restive periods, when its hydrothermal system is disturbed or when steam accumulates and pressurizes at the shallow levels of the volcanic edifice. Based on past records,  more explosions can be expected to occur with varying intensity, duration and distribution of ash. In view of the above activities, PHIVOLCS is now raising the Alert Level status of Bulusan Volcano from Alert Level 0 to Alert Level 1 (abnormal). This indicates that hydrothermal processes may be underway beneath the volcano that may lead to more steam-driven eruptions. The local government units and the public are reminded that entry to the 4-kilometer radius Permanent Danger Zone (PDZ) is strictly prohibited due to the possibility of sudden and hazardous steam-driven or phreatic eruptions. Civil aviation authorities must also advise pilots to avoid flying close to the volcano’s  summit as ash from any sudden phreatic eruption can be hazardous to aircraft. Furthermore, people living within valleys and along river/stream channels should be vigilant against sediment-laden stream flows and lahars in the event of heavy and prolonged rainfall. DOST-PHIVOLCS is closely monitoring Bulusan Volcano’s condition and any new development will be relayed to all concerned


Issued on April 28, 2015

As of 8:00 AM

Mayon Volcano’s seismic monitoring network recorded one (1) volcanic earthquake during the past 24 hours. Weak to moderate emission of white steam plumes that crept downslope towards west-southwest was observed. The summit was visible but no crater glow was observed last night. Taal Volcano’s seismic network recorded two (2) volcanic earthquakes during the past 24 hours. Field measurements conducted on April 23, 2015 at the western sector of the Main Crater Lake yielded a slight increase in water temperature from 30.8°C to 31.4°C, a decrease in water level from 0.51 to 0.45 meter, and no change in acidity at pH 3.14.



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