Pinatubo volcano (Luzon, Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 21 September-27 September 2022 (Continuing Activity)
On 25 September PHIVOLCS warned of potential lahars around Pinatubo due to intense rains from a typhoon expected during 25-26 September. Significant deposits from 1991 pyroclastic density currents on the W flank may be remobilized, generating lahars down major drainages in that watershed. PHIVOLCS noted that the communities of San Marcelino, San Narciso, San Felipe, and Botolan, Zambales Province, and communities in Tarlac and Pampanga Provinces may be affected by lahars and flooding.
Thu, 22 Sep 2022, 10:0010:00 AM | BY: VN
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
From: Global Volcanism Program, 2022. Report on Pinatubo. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 14 September-20 September 2022. Smithsonian Institution and US Geological Survey.
Wed, 1 Dec 2021, 08:06
PHIVOLCS reported that a weak phreatic explosion at Pinatubo was recorded during 1209-1213 on 30 November. The event was likely drive by shallow hydrothermal processes based on very low seismicity recorded during the previous few days, low diffuse carbon dioxide flux from the lake, and a notable infrasound signal. A plume mostly comprised of steam was seen rising above weather clouds within a few minutes of the end of the event. ... Read all
Tue, 30 Nov 2021, 10:40
Update: PHIVOLCS confirmed a phreatic explosion took place at the volcano today from 12.09-12.13 p.m. local time. The explosion did not involve new magma, but was a result of overheated fluids of the shallow hydrothermal system. It generated a tall plume consisting mostly of steam and only little ash: ... Read all