(UPDATE 5) A forced evacuation was ordered in parts of Marikina City after the Sto Nino Marikina river water level went beyond the critical level Tuesday night.
As typhoon Pedring continue to bring heavy rains, Marikina river's water level went up to 19.3 meters, over a meter higher than the dangerous, critical level of 18 meters, according to a report in ABS-CBN's TV Patrol.
But as of 10:30pm, Sto Nino Marikina River water level is 18.60 meters, or down 0.13 meters since its 10 pm level, according to the Metro Manila Development Authority.
Local officials have earlier raised a "third alarm" in the Marikina river when water level reached 16.9 meters around 11:00 am.
An official at the La Mesa Dam has earlier warned nearby communities of an expected spill over as water level rises due to typhoon Pedring.
Earlier, La Mesa Dam headworks manager Engineer Teddy Angeles said in a dzBB interview that the level is at 79.61, just a few meters short of the 80.15-spilling level, when the dam is expected to overflow.
As of 11 A.M., the Flood Forecasting and Weather Section of the weather bureau said water level is at 79.62.
A dzMM report says that as of 2:00 pm, the La Mesa dam water level is at 79.79.
The spill over will likely affect the Tullahan River, Fairview, Forest Hill, Quirino Highway, Capri, Goodwill and Sta. Quitera, San Bartome, barangay Ligon North Expressway in Valenzuela, Malabon.
Residents in these areas were advised to stay alert.
In a twitter message, the Department of Science and Technology said the La Mesa dam has no gate. "It just overflows," it stressed.
In a briefer issued by Malacanang, it said gates of other dams have been opened as of 12:00 noon Tuesday.
Malacanang said two gates of Ipo Dam, two gates of Ambuklao Dam, and three gates of Binga Dam, and five gates of Magat Dam have been opened.
Pagasa said Sto Nino water level as of 1pm is 17.88meters, several meters above the normal level of 13.8meters.