Tropical storm "Gener" continues to threaten northern Luzon, the Philippine Atmospheric Geophysical and Astronomical Services (PAGASA) said on its latest update on Monday.
Three weather systems - "Gener," the southwest monsoon, and a shallow low pressure area (SLPA) looming over Rizal province - joined forces to bring heavy rains in Metro Manila and nearby provinces, prompting the local government units (LGUs) and schools to suspend classes and work today.
In its 11 a.m. severe weather bulletin, "Gener" was located 360 km east northeast of Aparri, Cagayan or 290 km east southeast of Basco, Batanes. It has a maximum sustained winds of 105 kph near the center and gustiness of up to 135 kph.
The storm is moving north northwest at 11 kph. PAGASA noted that by Thursday morning, "Gener" will be outside of the Philippine Area of Responsibility (PAR).
Storm warning signals
The following areas have been declared under public storm warning signals.
Signal No. 2
Calayan Grp of Is.
Babuyan Grp of Is.
Batanes Grp of Is.
Signal No. 1
Dams situtation, evacuation
A Red Warning Signal was issued over La Mesa Dam from 11:30 p.m. to 12:30 a.m., as PAGASA flood forecasters monitored "intense rain" of 15.5 mm. By 6:10 a.m., PAGASA lowered the warning to "green" indicating moderate to heavy rains of 5-15 millimeters for the next 3 hours.
The National Disaster Risk Reduction and management Council (NDRRMC) said "continuing increase of the water elevation of La Mesa Dam causing excess water to overflow is expected to affect the low-lying areas along the Tullahan River, Fairview, Novaliches and the CAMANAVA area." It advised all the residents living downstream from La Mesa dam "to be alert for possible increase in the water level downstream."
Water level along San Mateo River in Rizal province reached critical level for the first few hours on Monday. At least 119 residents of Barangay Bagong Silangan, which is located near the river, were evacuated to a nearby covered court and provided with food assistance.
The Tumana Bridge at the border of Quezon City and Marilkina also reached critical water level of 18.30 meters as of 5:40 a.m.
As of 1:50 a.m., one gate of the Ipo Dam in Bulacan was opened to release 47.9 cubic meters per second. Two spillgates meanwhile in Bustos Dam were opened by four meters to let out 100 cubic meters of water per second.