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November 16 weather: Rains in Eastern corridor, central Mindanao

by Malou Talosig-Bartolome

Scattered rain showers and thunderstorms are expected today (November 16) in eastern Luzon and Visayas and some parts of central Mindanao, state weather forecaster Pagasa said.

The affected provinces are Aurora, Bicol Region, northern portion of Quezon, Eastern Visayas, Caraga, Davao Region, and SOCCSKSARGEN

Metro Manila and most of the country will experience partly cloudy to cloudy skies with isolated rainshowers or thunderstorms.

What’s causing the localized thunderstorms?

Two weather systems are affecting the localized thunderstorms — shear line and ITCZ

Shear Line is affecting the eastern section of Luzon and Visayas. The shear line or the Tail-end of a Frontal System is a a a narrow corridor where there is an abrupt change in the horizontal component of the wind. The convergence of the wind causes rains and thunderstorms.

Meanwhile, ITCZ or the inter-tropical convergence zone is causing the rains and thunderstorms in central Mindanao. ITCZ is the band of clouds that circles the globe near the equator – trade winds from the Northern and Southern hemispheres converge. When the sun heats the ocean, it raises the temperature and humidity in the air in the ITCZ. As trade winds converge and the buoyant air rises, the air expands, cools and later accumulates moisture in a series of thunderstorms.

What’s the impact of ITCZ?

Pagasa warned residents in areas affected by thunderstorms to take “precautionary measures” against impacts such as flash floods and landslides.

Residents along mountain slope are also advised for possible mudslides and rockslides.

Pagasa issued a series of thunderstorm advisories in the following areas today:

Northern Luzon. 2am: Light to moderate rains in Baggao, Peñablanca in Cagayan; and in the towns of Maconacon, Palanan, San Mariano and Dinapigue in Isabela.

5am: Moderate to occasionally heavy rains in Claveria, Cagayan, while light to moderate rains in Baggao, Gonzaga and Peñablanca; and in Disalag and Casiguran in Aurora.

Mindanao. 6am: light to moderate rain showers  (˂2.5 to 7.5 liters/meter² per hour)with lightning and strong winds due to thunderstorms were experienced over portions of Calamba, Plaridel in Misamis Occidental.

Temperature check

Pagasa recorded the lowest temperature at 450am today in Baguio City at 17 degrees Celsius. Malaybalay, Bukidnon experienced cooler weather at 17.5 degrees Celsius around 6am. Tanay, Rizal recorded 22 degrees Celsius.

Yesterday, Laoag City recorded the highest temperature in Laoag City in Ilocos Norte and Cotabato City at 34.5 degrees Celsius around 2pm. Zamboanga City was a bit cooler than the previous days but still hot at 34.14 degrees Celsius around 1:30 pm.

Weather outlook til Sunday

Planning for your weekend getaway, check the weather outlook in key cities in the country here: https://bagong.pagasa.dost.gov.ph/weather/weather-outlook-selected-philippine-cities

Visayas forecast

Ang Eastern Visayas makasinati ug madag-umon na kalangitan inubanan sa mga katag-katag na pag-ulan, pagpangilat ug pagpanugdug tungod sa localized Shearline. Ang mainland Palawan makasinati ug madag-umon na kalangitan inubanan sa mga katag-katag na pag-ulan, pagpangilat ug pagpanugdug tungod sa localized ITCZ. Ang nahibiling bahin sa Visayas, nahibiling bahin sa Palawan lakip na ang Kalayaan Islands ug ang Occidental Mindoro makasinati ug panagsang mapanganuron ngadto sa madag-umon na kalangitan inubanan sa mga pat-ak pat-ak na pag-ulan, pagpangilat ug pagpanugdug tungod sa localized thunderstorms/ITCZ.

Hinay ngadto sa kasarangan nga paghuros sa hangin gikan sa Silangan ngadto sa Amihanang-silangan ang mupasulabi sa tibuok Visayas, Palawan lakip na ang Kalayaan Islands, ug Occidental Mindoro diin ang kadagatan magmalinawon ngadto na sa kasarangan ang pagbalud.

Mindanao forecast

SOCCSKSARGEN, CARAGA ug ang Davao Region makasinati sa mapananuron nga kalangitan inubanan sa katag-katag nga pag-ulan ug panalugdog tungod sa ITCZ. Samtang ang ubang dapit sa Mindanao makasinati sa panalagsang pagdag-um ngadto na sa mapanganuron nga kalangitan inubanan sa patak-patak nga pag ulan ug panalugdog tungod sa ITCZ. Hinay ngadto sa kasarangan nga hangin maga gikan silangan ngadto na sa amihanang silangang direksyon ug hapsay ngadto sa kasarangan ang pagbalud sa kadagatan.

Screenshot: Pagasa Youtube channel

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