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Another completed ERC and it appears that Lekima is on its way to looking more annular (note the distinct lack of outer rainbands). Its not there on Satellite imagery yet (still too much cloud debris in the eye) but it might looks better by later tonight. 

 

20131024.1848.noaa18.89h.28W.LEKIMA.115k

 

I noticed it was occasionally had an annular appearance yesterday and this morning. looks like it is trying to form a large. IR now does show a large eyewall trying to form.

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A guess, no Coriolis involved, maybe an abnormally strong low pressure South of the equator.  Maybe almost a second low developing South of the equator or just a surge of Easterlies..  New Guinea may interfere with that second TC developing if that is what is driving this..  This will have to gain ground, I'd think, another couple of degrees to get another Coriolis induced vorticity to maintain.

 

 

Edit:

 

Explanation above looks better

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  • 1 month later...

It appears now that this system will have a hard time forming into anything more than a tropical depression, but it will still bring torrential rains to most of Eastern and Northern Mindanao. Below is the 24 hour rainfall prediction based on the 00Z GFS. This could be a serious situation regardless of the strength. The 60 hour accumulated rainfall forecast between now and Saturday indicates some isolated areas may receive up to 15 inches.

 

post-1075-0-03188400-1389257829_thumb.jp

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This system will just not go away. In Mindanao Tropical Depression Agaton has left 40 dead and has displaced over 160,000 people so far and the heaviest rains the next 24 to 36 hours will fall in areas that have already received over 25 inches in the past week.

 


 

post-1075-0-15311400-1390055009_thumb.jp

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