The Shear Line is currently affecting Southern Luzon while the Northeast Monsoon or Amihan will be experienced by the the rest of Luzon, according to PAGASA on early Sunday. In its 4 a.m. bulletin, ...

Weather specialist Obet Badrina reports that the shear line and northeast monsoon or amihan is forecast to bring rains in parts of Luzon Saturday, November 29, 2025. — Screengrab from ...

MANILA (UPDATED) — A team of predominantly Filipino weather scientists developed a physics-based algorithm to detect and monitor shear lines. Shear lines form when the northeast monsoon or Amihan ...

Much of the heavy rains that hit the Philippines during the Amihan northeast monsoon season between November and March are triggered by "shear lines": kilometers-long bands of converging warm and cold ...