WMO shows that over in Thailand, the amount of rainfall recorded was between 50mm to 70mm while over in Malaysia, on the east coast, Kuala Terengganu receive an amount of rainfall of approximately 80mm. Over in Singapore, Changi airport was reported to have recorded an amount of rainfall of 80mm as well and finally in Batam, Indonesia, rainfall accumulated to 90mm was reported for the past 6 to 12 hour. Here on the left side of the screen is the Isohyet map from the Malaysia Meteorological Department indicating the accumulated amount of rainfall for the past 24 hour in the Peninsula Malaysia and we can see here over the East Coast of Peninsula Malaysia specifically the state of Terengganu and Pahang has received rainfall amounted within 50 to 100mm. Similar situation happens in the states of Selangor, specifically the Klang valley and capital city Kuala Lumpur, rainfall accumulated up to 100mm has been recorded for the past 24 hour while over in the North in Penang, total accumulated rainfall was within 25mm to 50mm for the past 24 hour. Similar weather pattern are expected for the next few days with mostly afternoon showers to occur. Kindly refer to the South East Asia 3-days Outlook for a better view of the upcoming 3 days weather in the Peninsula Malaysia and also both Sabah and Sarawak. And the image on your right side is the rainfall estimation obtained from the Malaysia Meteorological Department for the Borneo Island namely states of Sabah and Sarawak. Rainfall amounted up to 150mm was reported over the states of Sabah for the past 24 hour and if you have followed Rob's video yesterday, he did mentioned about the heavy precipitation going on in the state due to the area of low pressure (remnants of 97w) that was located just North of Palawan. And over in Sarawak, weather seems to be fair all across the states with moderate heavy rainfall reported over certain area. Overall, in the South East Asia region, weather are expected to improve latter this month as the South West Monsoon was about to kick start as the Monsoon transition period was reported to have end at the beginning of the month. The transition period from the North East Monsoon to the South West Monsoon occurred during the month of March and end in early of May. During the South West Monsoon period, weather in the South East Asia region specifically Malaysia, Singapore and Indonesia receive less rain compare to the North East Monsoon. The atmosphere are relatively stable at this particular time resulting a slower vertical mixing process in the atmosphere thus reducing strong convection. Weather in the Peninsula Malaysia, Singapore and the Borneo island is expected to be drier compare to other season. In Malaysia, during the South West Monsoon season, the western coastal area of Peninsula Malaysia (Perak to Johor) are expected to experience some early morning thunderstorms or heavy rain with gusty winds. This is due to the formation of storm line in the Melaka Straits known as the "Sumatras" However, in the Philippine, situation is the other way round, the arrival of the South West Monsoon means the beginning of the storm season. At the peak of this season, storms are expected to cross the country from the east and then moving onto the South China Sea before ending up either in Vietnam or the coastal area of Southern China. Similar storm season are expected as well in the Indian Ocean and the South West of the Pacific Ocean and North of the South China Sea. For more detailed information and forecast on the Monsoon season beginning this May until end of the season in September specifically in Malaysia, please have a read here http://www.met.gov.my/images/Docs/laporan_monsun.pdf (In Malay language) Meanwhile, two low system are on watch today. One of the system are just South of Davao, Invest 99W where as another system, Invest 94S are located in the Southern Hemisphere just 505NNW of Darwin, Australia. Both of the system, however, are expected to have low probability to develop into a stronger system. Do follow the discussion on our forum below. Invest 99W -> http://www.westernpacificforecast.com/nwpac-invest-99w-t44.html Invest 94S -> http://www.westernpacificforecast.com/swpac-invest-94s-t43.html That is all from me as of now. Stay safe and have a good day WestPac Wx SE Asia Casters ~Francis~
Weather throughout history has played a vital role in space travel; this will be no different with the planned rocket launch this week by North Korea. Specifically by the mid-part of the week a low pressure system will be moving through the Korean Peninsula and with it bringing thunderstorms, high winds, and cloud cover. All unfavorable conditions for any type of space vehicles. The video above is my forecast analysis throughout the week. I do want to stress these are just my opinions on the forecast reflected back to when I used to forecast the weather in the area of Space Shuttle launches. It is not my opinions on the launch itself and its role in world politics.History tells us that weather can cause damage to spacecraft, in 1969 Apollo 12 was struck by lightning twice just after launch. This is why the U.S and Nasa have such strict rules on launch weather. The forecast though as stated above will be grim through Thursday. Tuesday a low pressure area will begin to work its way in to the Korean Peninsula with cloudy skies on the cards by 0900 that morning. This will already provide not only dangerous conditions for launching but also a poor photo opportunity for this landmark launch. Something I'm sure the government of North Korea would not want to miss. Conditions should go down hill more on Wednesday as the low passes though before moving off to Japan. High pressure will begin to ridge in by Thursday ushering in fairer conditions accompanied by a cool breezy northerly wind. Therefore the most prime conditions for a rocket launch would be Thursday by noon or Friday morning. International law would not allow the North Korean Space agency to launch by afternoon though so likely one would wait to Friday morning. These are all just my thoughts though and if the forecast takes place early in the week or late in the week I'm sure it will go off. Which is why the second half of the video talks about how space debris will fall due to upper level winds. In the yellow sea the jet stream will be cruising through resulting in rather high winds in the upper levels, this could carry the debris a little farther East, by how far one could not be sure due to the unknown problem of how high the stage one separation would take place. The other concern is the stage two separation area. Where in the tropics thankfully the upper level winds are rather light and the lower level atmosphere looks fair by the mid part of the week. Therefore as long as everything goes to plan the North Eastern Coast of Luzon should not be to worried. So please be sure to check it out and as always if you have any comments or suggestions please post them in the box below.
More reports of dead and missing in Japan today as Talas moved across the country bringing nearly 1500mm (5ft) of rainfall. Also a look at Tropical Depression 16W. Weather Caster Pat made the chart below basing on over 100 stations across Japan. The numbers are staggering on this in depth analysis.