General Weather Situation over LMB 12 May 2008, 12:00 LT

 A trough of low pressure cells in Inter-Tropical Convergence Zone (ITCZ) is linking between an active low pressure cell in the upper Andaman Sea and an active low pressure cell in the middle South China Sea, and the southwest monsoon is intensifying over the region during 12 – 15 May. Widespread thundershowers with isolated heavy rainfall are expected over lower parts of the LMB, particularly lower part of northeast of Thailand, middle and south of Lao PDR, Cambodia, central of Viet Nam through Mekong Delta. Scattered thundershowers with isolated heavy rainfall are also expected in the north of Thailand.

Since the southwest monsoon was onset and already started over the region and the Indochina Peninsula, people in these areas, particularly in the valley or low-lands in the terrains of the LMB should beware of hazardous weather impacts and flash floods with occasionally landslides from heavy rainfall.

Concerning organizations should daily study synoptic analysis and clouds satellite imagery which are available in various websites of member countries for preparedness and prevention during this week.

Fig. 1 Synoptic Chart, 12 May 2008, 0700 LT (Source, TMD, Thailand)

Fig.2 Upper Winds at 925 hPa (600 m), 12 May 2008, 0700 LT (Source, TMD, Thailand)

Fig. 3 Visible Images from MTSAT-1R on 12 May 2008, 0830 LT (Source, NMFC/JTWC, USA)

Fig. 4 Infrared Images from GOES-E High Resolution on 12 May 2008, 1030 LT (Source, NMFC/JTWC, USA)