Philippines – Floods in 3 Regions After Tropical Storm Dumps 500mm of Rain in 24 Hours

Tropical Cyclone Doksuri, known locally as Maring, cut across Luzon Island in the Philippines between 11 and 13 September, 2017, bringing with it heavy rain that caused flooding and some landslides in three regions.

According to WMO figures, Alabat in the province of Quezon, Calabarzon Region, recorded 528 mm of rain in 24 hours between 11 and 12 September, 2017.

The Disaster Response Operations Monitoring and Information Center (DROMIC), part of the Philippines Department of Social Welfare and Development (DSWD), reports that 8,793 people from 2,103 families have been affected across 109 barangays in Metro Manila (NCR), Central Luzon and Calabarzon regions.

Over 7,000 of those affected were in the Calabarzon region, with 2,591 in Laguna, 3,827 in Quezon. As of 13 September there were 6,430 people displaced from their homes and staying in evacuation centres in the region.

A total of 18 houses were damaged by storm Doksuri, of which, 6 were partially damaged while 12 were left totally damaged in Calabarzon. Most of the damage was in Silang in Cavite and Mabitac and San Pablo City in Laguna.

According to local media, as of 13 September, 4 people had died and 6 were missing as a result of the storm. Two died in a landslide in Taytay, Rizal province, Calabarzon. Other deaths were reported in Pasay city, Metro Manila and Lucena, Quezon province, Calabarzon Region.

As of 13 September, 5 people were still missing after a house was swept away by a swollen river in Laguna province. One further missing person was reported in Cavite province.

The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said on Wednesday that Doksuri is about to exit Philippine Area Of Responsibility (PAR) as it approaches the western boundary of Philippine territory.

Over the next 24 hours Doksuri is forecast to strengthen and pass south of Hainan island province, China and on to Vietnam.

Another storm, Typhoon Talim (locally known as Lannie), looked to be heading towards the Philippines over the last few days. However, PAGASA reported that Talim has also exited PAR and was approaching the Ryukyu and Miyako Islands in Japan. Miyakojima recorded 161 mm of rain between 12 and 13 September.

Track of TS Doksuri, September 2017. Image: PAGASA
TS Talim, September 2017. Image: PAGASA

Rainfall Totals, Philippines

11 to 12 September

  • Alabat – 528 mm
  • Calapan – 77 mm
  • Infanta – 201.1 mm

12 to 13 September

  • Tayabas – 81.5 mm
  • Ninoy Aquino Airport – 52.4 mm
  • Subic Bay – 79 mm
  • Sangley point – 70.8 mm
  • Ambulong 60.4 mm
  • Science Garden – 66.6 mm
  • Manila – 98.7 mm
  • Tanay – 85.0 mm

Flood Summary

Last updated: October 20, 2017
Event
Typhoon Doksuri, Philippines, Vietnam, Thailand, Myanmar, September 2017
Date
September 11, 2017
Type
Flash flood
Cause
Extreme rainfall

Locations

A - Alabat (Philippines)
B - Pasay city (Philippines)
C - Lucena (Philippines)
D - Laguna (Philippines)
E - Nghe An (Vietnam)
F - Ha Tinh (Vietnam)
G - Quang Binh (Vietnam)
H - Quang Tri
I - Thanh Hoa
J - Thua Thien Hue
K - Phitsanulok (Thailand)
L - Phrae (Thailand)
M - Kalay (Myanmar)

Magnitude

Rainfall level
528 mm in 24 hours
Alabat, Quezon, Calabarzon Region, Philippines - September 11 to September 12, 2017
Rainfall level
381 mm in 24 hours
Cua Viet in Quang Tri province, Vietnam - September 14 to September 15, 2017
Rainfall level
115.5 mm in 24 hours
Phrae, Thailand - September 16, 2017
River level
12.2 metres
Myittha River at Kalay, Sagaing, Myanmar - September 19 to September 20, 2017
Danger level is 11 metres

Damages

Fatalities
4 people
Philippines - September 11 to September 13, 2017
Two died in a landslide in Taytay, Rizal province, Calabarzon. Other deaths were reported in Pasay city, Metro Manila and Lucena, Quezon province, Calabarzon Region.
Fatalities
9 people
Vietnam - September 15 to September 17, 2017
Fatalities occurred in Hoa Binh, Thanh Hoa, and Quang Binh ( 2 in each) and Nghe An and Thua Thien Hue provinces.
Buildings destroyed
1,185
Vietnam - September 15 to September 18, 2017
152,559 houses damaged and 10,923 houses flooded