ေလဖိအားနည္းဆဲလ္ INVEST 99W
14 Jun 2013 0000Z
Location: 18.3 113.9
Winds: 20 knots
Central Pressure: 1007 hPa
JTWC မွ ဇြန္လ ၁၄ ရက္ ျမန္မာစံေတာ္ခ်ိန္ ေန႕လည္ ၁၂၃ဝ နာရီ ထုတ္ျပန္ခ်က္အရ ေတာင္တရုတ္ပင္လယ္တစ္ျပင္လံုးနီးပါး က်ယ္ျပန္႕စြာ လည္ပတ္လွ်က္ရွိသည့္ 99W ၏ ဖြဲ႕စည္းျဖစ္ေပၚပံု၌ အျပင္ဘက္သို႕ ျပန္႕က်ဲလာသည့္ ေလစီးေၾကာင္းအေျခအေနကို ေတြ႕ရၿပီး အခ်င္း ေနာ္တီကယ္မိုင္ ၅၅ဝ ခန္႕ရွိေနေသာ္လည္း ပ်က္ျပယ္မည့္ အေျခအေနမေတြ႕ရေသးေၾကာင္း၊ 99W သည္ ဆက္လက္၍ အားေကာင္းလာကာ မုန္တိုင္းငယ္တစ္ခု ျဖစ္လာႏိုင္ေျခရွိေၾကာင္းႏွင့္ ေျမာက္-အေနာက္ေျမာက္ဘက္သို႕ ေရြ႕လ်ားကာ တရုတ္ျပည္မႀကီး၏ ေတာင္ဘက္ကမ္းေျခကို ေနာက္ ၂၄ နာရီမွ ၃၆ နာရီအတြင္း ေက်ာ္ျဖတ္ဝင္ေရာက္သြားႏိုင္ဘြယ္ရွိေၾကာင္း ႀကိဳတင္ ခန္႕မွန္းထားပါသည္။ JTWC မွ ေလဖိအားနည္းဆဲလ္ INVEST 99W ၏ ဗဟိုတြင္ 1000 hPA သို႕ ဖိအား ဆက္လက္က်ဆင္းမည္ဟု ခန္႕မွန္းထားၿပီး၊ လာမည့္ ၂၄ နာရီအတြင္း မုန္တိုင္း ျဖစ္ေပၚလာႏိုင္ေျခအဆင့္ MEDIUM အဆင့္ ဆက္လက္ သတ္မွတ္ေၾကာင္း ေတြ႕ရပါသည္။
THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 18.3N 113.9E, IS NOW LOCATED NEAR 18.6N 113.7E, APPROXIMATELY 220 NM SOUTH OF HONG KONG. ANIMATED MULTISPECTRAL SATELLITE IMAGERY CONTINUES TO SHOW A BROAD CIRCULATION THAT NEARLY ENCOMPASSES THE ENTIRE SOUTH CHINA SEA AS THE SYSTEM EXPANDS NEARLY 550 NM. THE LOW LEVEL CIRCULATION CENTER (LLCC) REMAINS ILL-DEFINED AS THERE IS A LACK OF CENTRAL CONVECTION, WHILE CONVECTION IN THE OUTER PERIPHERIES OF THE SYSTEM REMAINS EXPANSIVE, YET DISORGANIZED.
A 140217Z PARTIAL ASCAT PASS INDICATES WEAK CENTRAL WINDS (05-10 KNOTS) WHILE WINDS ALONG THE WESTERN PERIPHERIES ARE ELEVATED AT 15-20 KNOTS. THESE ELEVATED WINDS ARE DISPLACED APPROXIMATELY 200 NM FROM THE LLCC. UPPER LEVEL ANALYSIS REVEALS THE SYSTEM IS LOCATED SOUTHWEST OF AN ANTICYCLONE IN AN AREA OF LOW TO MODERATE (10-15 KNOT) VERTICAL WIND SHEAR AND ENHANCED POLEWARD OUTFLOW. NUMERIC MODELS ARE DEVELOPING THIS SYSTEM INTO A WEAK CYCLONE THAT WILL MOVE NORTHWESTWARD INTO MAINLAND CHINA OVER THE NEXT 24-36 HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 15 TO 20 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1000 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS MEDIUM.
By mmweather.ygn, |