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Aussie (& S-Hemisphere) Cyclone Action 2012-2013


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Big-time peak-season snooze going on.  Lame.

 

Almost exactly two years ago, Cyclone Yasi-- a very large, intense storm-- smashed Queensland.  The center crossed the coast near Mission Beach with a central pressure of 929 mb and estimated winds of 125 kt (1-min)-- a solid Cat 4 on our scale.  The wind radii were enormous, and even population centers very far from the center-- like Townsville-- had winds at or near hurricane force.

 

A huge event for this region.

 

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Totally over the S Hemisphere. February is shot-- ain't holdin' my breath for March. We're halfway to our season anyway. Woo hoo.

That was me being sarcastic, btw.

I think as we get into March, we'll have better chances. But I thought that about the EPAC in October and we got sandy instead. *shrugs*

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That was me being sarcastic, btw.

I think as we get into March, we'll have better chances. But I thought that about the EPAC in October and we got sandy instead. *shrugs*

 

Oh, duh.  Of course.  I didn't realize you were being sarcastic, and I was like, "How is it sticking with climo to predict nothing at peak season?"

 

I've forgotten how to read your tone since we never communicate no mores.   :(

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Delayed landfall, as new Euro moves it West away from Australia before turning it back, but from a distance, the extra time over water seems to make it more chase worthy.  Hint, hint.

 

GFS ensembles are quicker.  The signal for the cyclone is there, usual week to 10 day differences on track...

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Blown up version of happy picture stolen from Facebook....

 

0Z ECMWF looks awfully similar for something 8 or 9 days away.  Closed low by Friday night.

GFS remains a bit sooner with landfall.  I think apparent spread in Euro ensemble is because of two (distinct) forecasted cyclones.

 

I'm guessing (hard to tell, even w/ GFS vorticity) the system develops from the disturbed weather at the Top End.

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In other news... Cyclone Haruna has formed in the Mozambique Channel and threatens Madagascar's W coast. The JTWC has it as a TS, but this looks like a Cat-1 hurricane to me:

 

 

JTWC now has Haruna at 70 kt per the 12Z advisory.  The eye has really become quite large.  There is some cooler, dry air pushing in from the south, but with low shear and very weak mean flow, not enough of that dry air is wrapping into the system to cause weakening. 

 

The vast majority of members in the 00Z ECMWF, CMC and UKMET ensembles all brought Haruna into the southwest corner of Madigascar, while much of the GFS ensemble suite was a miss to the south.  The 12Z op GFS appears to have shifted north, so I might expect the GFS ensemble to follow with a landfall extremely likely at this point.  Perhaps very near or just south of Toliara.

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The 00Z GFS shows a powerful cyclone coming ashore near Broome around Day 5.

 

The 00Z Euro shows a powerful cyclone coming ashore further W-- in the Pilbara, near Pardoo-- around Day 7.

 

In general, the solutions have trended E over the last couple of days.

 

Trended too far east now with the 12Z.  :axe:  Genesis occurs so close to land the system never even has the chance to get its act together.

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Trended too far east now with the 12Z.  :axe:  Genesis occurs so close to land the system never even has the chance to get its act together.

 

Ha ha ha, I just noticed.  :lol:  What a buzzkill after all those mega-juicy runs.  What's interesting is that both models are now showing it too far E and too close to shore to really get it together.

 

Lame trend.  

 

P.S.  Thanks for keeping an eye on Haruna-- appreciate it.  :wub:

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