Using satellite sensors, scientists from University of Wisconsin-Madison's Cooperative Institute for Meteorological Sattelite Studies found lightning streaks, gravity waves, mesovortices inside the eye of super typhoon Lawin. This was revealed by their satellite-based Visible Infrared Imaging Radiometer Suite (VIIRS).
They saw it before super typhoon Lawin landfell on Cagayan province.
Atmospheric gravity waves form when buoyancy pushes air up, and gravity pulls it back down. Studies have shown that tropical cyclones generate gravity waves, according to NASA.
Mesovortices are rotating bodies of air found inside storms and the eyewall of tropical cyclones.
According to PAGASA, super typhoon Lawin made landfall in Penablanca, Cagayan last 11 pm on Wednesday. It has a massive 800-kilometer diameter and is expected to cross the provinces of Apayao and Ilocos Norte, before exiting the Philippine area of responsibility Thursday evening.
Under storm signal number 5, the first time PAGASA issued such signal are Cagayan, Isabela, Kalinga, Apayao, Northern Abra and Ilocos Norte.
Placed under signal number 4 are the rest of Abra, Ilocos Sur, Mt. Province, Ifugao and Calayan Group of Islands.
Source: ABS-CBN
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