Archive for November 5th, 2008|Daily archive page

TROPICAL DEPRESSION 17 IS OFFICIAL

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It took data gathered from an Air Force hurricane reconnaissance plane to confirm today what satellite remote sensing seemed to indicate yesterday.  Invest 93L is now officially Tropical Depression 17.  Because of ambiguities in information gathered during satellite passes it is, in my opinion, good science to get on site confirmation before fully committing.  As time goes by and the technology continues to develop I’m sure the day will come when satellites peering downward measuring atmospheric and earth surface parameters, gathering information from countless data points (and levels), will provide data so accurate and uncorrupted that very few confirmations will be needed.

I have inserted (above) graphical Advisory 1 from the National Hurricane Center.

Clear Indications of Rotation with System 93L

I expect that before morning has ended tomorrow (November 5) 93L will be declared a tropical depression.  By definition, a tropical disturbance upgrades to a tropical depression once closed rotation at the surface is confirmed.

The first shows windfields from a Quiksat (satellite) pass.  The second depicts the movement of ocean waves, which for the most part, is a function of wind.

With regard to this notion/expectation that a tropical depression status will be designated, I am providing two graphics which I consider to be supportive.  Left clicks will enlarge the graphics.

Yours Truly,

Cloudman23 (Tonie Toney)

11-4-08-wind-field

11-4-08-wave-motion