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Location: UFOUpDatesList.Com > 2007 > Jan > Jan 11

Re: Holes In The Cloud Deck - Tarbell

From: Michael Tarbell <mtarbell.nul>
Date: Wed, 10 Jan 2007 20:15:43 -0700
Fwd Date: Thu, 11 Jan 2007 08:18:18 -0500
Subject: Re: Holes In The Cloud Deck - Tarbell


>From: Martin Shough <parcellular.nul>
>To: <ufoupdates.nul>
>Date: Wed, 10 Jan 2007 15:29:03 -0000
>Subject: Re: Holes In The Cloud Deck

>>From: Viktor Golubik Diverge247.nul
>>To: ufoupdates.nul
>>Date: Wed, 10 Jan 2007 08:37:41 EST
>>Subject: Re: Holes In The Cloud Deck

>>>From: Michael Tarbell <mtarbell.nul>
>>>To: ufoupdates.nul
>>>Date: Mon, 08 Jan 2007 10:33:55 -0700
>>>Subject: Re: Holes In The Cloud Deck

<snip>

>>Since weather radar is more apt to have detected water
>>condensation and ice crystal formation patterns, I wonder if
>>such a station (if it exists nearby at all) might have detected,
>>not only the object, but it's interaction with the cloud
>>stratification's.

>I've looked into this to some extent Viktor. A detailed map of
>precipitation and doppler wind velocities in the area of the
>object would be fascinating vis a vis some of the questions
>discussed here recently about the "cloud hole". There are
>multiple weather radars covering the area but the situation is
>complicated.

<snip>

>All of these weather radar data are actually merged into an
>integrated weather product that is fed to the FAA Air Traffic
>Control (for the C-90 Chicago O'Hare region this is at Elgin,
>Illinois) where it is available to controllers on a dedicated
>channel of the ASR-9 surveillance radar. NARCAP has a request
>granted but still pending with FAA for ATC surveillance radar
>data. When this is forthcoming it is likely to offer the best
>chance for radar detection of the "object", but I suspect this
>will only be primary and secondary target data, and won't
>include any of the weather product.

I've had recent correspondence with the FAA regarding types and
availability of historical weather data at US airports (keeping
it generic and not mentioning the O'Hare sighting), including my
particular interest in the thickness of the cloud cover. The
latter data is apparently neither gathered nor archived.
However, they do recommend

http://ols.ncdc.noaa.gov/cgi-bin/nndc/buyOL-001.cgi

I've downloaded the relevant 07 Nov 2006 Chicago-O'Hare data
from the above site. I don't find any crucial data there that
haven't already been reported, but it includes hourly
observations for the entire day, with various arcane
codes/details that may be of interest.

Additional info about FAA weather data collection and
distribution is at:

http://www.faa.gov/aua/weather/warp/

Mike




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