The Utilization of SATAID For Extreme Weather Analysis (Case Study: January 27th , 2016)

In order to support the safety of sailing operation, BMKG issued regulations no.009 of KBMKG y/of 2010 about the sea’s early warning of extreme weather, including gusty, extreme waves and heavy rains. All of these phenomenon caused by the activity of a Cumulonimbus (Cb) cloud. There has been detected Mesoscale Convective System (MCS) categorized as squall line type at the north of Lombok on January 27th , 2016 at 6:00 UTC to 19:00 UTC. This research using SATAID which conducted to determine the characteristics of the system in order to perform the better early warning weather. The results of this research is this system has a length of 102 km at 11:27 UTC. Based on the SATAID application, lability of the air in the system can be known. Assessment of air instability done at 13:47 UTC when the air is very unstable, with SSI value of (-0.4)° C. This indicated that the oportunities of thunderstorm was quick. LI value (-3.2)°C qualify as very unstable, severe thunderstorm might occur, KI value of 34.7° C indicates possible TS to grow by 60 - 80 %, a very strong Thunderstorms may occur with SWEAT value of 276. CAPE value in the period of growth 434 k/j and increases dramatically at 13:47 UTC become 855 kg/j. Vertical wind profile indicates wind shear between 400 mb to 300 mb during the mature stage. The wind in the surface layer reaches 33 km/h and categorized as strong winds and could be endangering shipping operational. The graph shows the temperature of the cloud tops of the system during his life time has a temperature < (-60)0C. The system is formed as the impact of the bigger squall line system on the north coast of Java, Bali and Nusa Tenggara