By Christopher Lloyd T. Caliwan
MANILA, April 21 (PNA) — The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said that some areas in Quezon City experienced hail storm on Tuesday .
In an interview, PAGASA rainfall forecaster Jaime Bordales said the hailstorm experienced in some parts of Quezon City is due to the effects of thunderstorms.
The hailstorm started in Rizal area, then in Antipolo then it was experienced in Marikina, Quezon (cities) and the province of Bulacan, he told the Philippines News Agency (PNA).
A hail or a hailstorm is a form of solid precipitation consisting of balls or irregular lumps of ice.
Isolated case lang po ito and this can be experienced in a thunderstorm cloud or technically, in cumulonimbus clouds. The hail storm is unpredictable. We cant even predict the movement of clouds. A hail storm can happen anytime, Bordales explained, adding that no tropical cyclone or even weather disturbance is seen near the Philippine Area of Responsibility.
He noted that localized thunderstorm or convection is easily formed, which brings isolated rainshowers.
PAGASA issued the thunderstorm alert first at 1:55 pm and issued another advisory around 3 p.m. which is affecting ‎Metro Manila‬, ‎Cavite‬ province (towns of Maragondon, Magallanes, Gen. Emilio Aguinaldo, Indang, Alfonso); ‪Rizal‬ province (towns of Antipolo, Rodriguez, San Mateo, Cainta); ‎Laguna‬ province (towns of Bay, Los Banos, Alaminos); ‪‎Batangas‬ (Sto. Tomas town); ‎Pampanga‬ province (towns of Floridablanca, Porac, Candaba, Arayat); Tarlac‬ province (towns of Capas, San Jose, Odonel, and Santa Lucia); ‎Bataan‬ (Morong, Hermosa); and portions of ‪‎Bulacan‬ and ‪‎Zambales‬ provinces which may persist within two hours and most likely to affect nearby areas.
All are advised to take precautionary measures against heavy rains, strong winds, lightning and possible flash floods. Keep monitoring for updates, it added.
Despite a warmer weather, he said the occurrence of isolated rains will still prevail due to localized thunderstorms expected mostly in the afternoon or evening.
PAGASA explained that the convective activity brought about by intense heat triggers the formation of more cumulonimbus clouds or dark clouds associated with thunderstorms that brings rains.
Meanwhile, the thunderstorms brought heavy rains in some part of Metro Manila which experienced flooding, according to the Metropolitan Manila Development Authority (MMDA).
In its Twitter account, MMDA said that as of 2:29 p.m., the Commonwealth-Doña Carmen (Quezon City) west bound area was tire deep and not passable to light vehicles.
As of 2:40 p.m., Commonwealth Avenue towards Mindanao (north bound) has knee deep flood and not passable to light vehicles.
As of 2:46 p.m., Aurora Tunnel south and north bound was gutter deep.
As of 2:48 p.m., the EDSA Kamuning south bound area has half tire deep waters but passable to light vehicles. (PNA)