Mike,

All good logical  theoretical stuff. Perhaps funding is an impediment to
doing what you suggest re data collection?  I seem to recall seeing some
rather gripping video on this - Maybe from NCAR?  

 

However, would it be true to say, that all the models are accurate enough to
predict that the people who live on the Queensland coast in the
Mackay/Townsville belt are in "for a bit of a blow"? 

 

In the real world, the actuality is that these people are preparing for a
major disaster! Lives will probably be lost, and there will be major
property loss for sure, regardless of the exact track of the epicentre, or
the eventual "category" that is assigned to "Cyclone Debbie" - currently Cat
4.

 

Who on this forum, remembers Cyclone Yasi, from 2011? ....  Just 6 years
ago. If you choose to live in the tropics, you might give some thought to
the cyclone risk, that you will encounter, possibly sooner, rather than
later. Risk vs. reward.

 

Gary

 

From: Aus-soaring [mailto:aus-soaring-boun...@lists.base64.com.au] On Behalf
Of Mike Borgelt
Sent: Monday, 27 March 2017 9:51 PM
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] weather models

 

Yes, it is clearly a Tropical Cyclone but only 12 hours or so before
landfall the 3 models are still not saying the same things and the maximum
wind speeds for tomorrow morning before landfall are showing only 100km/hour
or so.

Could intensify. What is the Sea Surface Temperature under the predicted
track? A first world country would be flying  aircraft over the cyclone at
high altitude and putting dropsonde's into it regular time and distance
intervals. or use a HALE (High Altitude Long Endurance) drone to do  it. Put
a small GPS chip in each sonde and report the speeds and altitudes and
locations  as it parachutes into the ocean. Then we'd have actual DATA. The
weather above a cyclone at high altitude is benign. It is actually a high
pressure area
up near the tropopause. Look at the high altitude cirrus blow off on the
satellite pictures, the circulation is anticlockwise in the Southern
Hemisphere. Right now do the movie on the BoM site of the hi res  satellite
images. You'll see the low clouds circulating clockwise and the high clouds
going anticlockwise.

I used to do this stuff for a living.

Mike




 At 07:35 PM 3/27/2017, you wrote:



Mike, 
sitting in the disaster coord centre. have a look at the mackay radar.
Classic high intensity cyclone with the hole in the middle. 

Peter Heath  




------ Original Message ------

From: "Mike Borgelt" <mborg...@borgeltinstruments.com>

To: "Discussion of issues relating to Soaring in Australia."
<aus-soaring@lists.base64.com.au>

Sent: Monday, 27 Mar, 2017 At 7:24 PM

Subject: Re: [Aus-soaring] weather models

Ooh look, the models are converging less than 15 hours before 10am tomorrow!
Real measured updates to re-initialise obviously work.

Note however the difference between the models on maximum windspeed and
extent of high wind area. It will be interesting to see the further
convergence after more observational input updates.

Mike







At 03:03 PM 3/27/2017, you wrote:

Those who have a touching faith in weather models might like to look at
www.ventusky.com <http://www.ventusky.com/>  and check where the cyclone
will be at 10am tomorrow and what the wind speeds will be around it.

The redo with the other 2 models.

Mike








Borgelt Instruments - design & manufacture of quality soaring
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