"It looks cloudy, but there is no indication of extreme conditions," Lapan chief Thomas Djamaluddin told ANTARA in Jakarta on Tuesday.
Based on Sadewa's (Satellite-based Disaster Early Warning System) Lapan, there were no cloud conditions or extreme rain at the point of occurrence.
Estimates of atmospheric conditions from the Sadewa Lapan application using the Himawari-8/9 satellite (growing clouds) and WRF (wind and rain) models also show that there were no extreme atmospheric conditions around the point of occurrence.
Although there was a convection system forming around the point of occurrence, there was no indication of extreme conditions, Thomas said.
"These atmospheric dynamics affect passing aircraft, but they are not necessarily the cause of the crash," he added.
An analysis of atmospheric dynamics has shown a meso-scale convection system formed over Lampung and the surrounding Java Sea since 11 a.m. Western Indonesia Time (WIB) on January 9, 2021. The system then breaks up and propagates southward, which is associated with the growth of another meso-scale convection system over western Java during the time range of 1p.m. to 3 p.m. WIB.
The Transportation Ministry earlier confirmed that the airport authorities had lost contact with the Sriwijaya Air flight, serving the Jakarta-Pontianak route, around 2:40 p.m. local time on Saturday (January 9, 2021).
According to the ministry, the last contact with the Boeing 737-500 jet, bearing the registration number PK-CLC, was made at 11 nautical miles north of Jakarta’s Soekarno-Hatta International Airport, after the plane crossed an altitude of 11 thousand feet and was ascending to 13 thousand feet.
The aircraft took off from Soekarno-Hatta Airport at 2:40 p.m. local time on Saturday (January 9, 2021), and was scheduled to land at the Supadio Airport in Pontianak, West Kalimantan, at 3:50 p.m. local time.
Based on the manifest, the plane was carrying 50 passengers and 12 crew members on board. (INE)
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EDITED BY INE