[meteorite-list] Seems PF fell on 3/27 and NOT on 3/26...

From: Pekka Savolainen <pekka.savolainen_at_meteoritecentral.com>
Date: Thu Apr 22 10:22:38 2004
Message-ID: <3EEABED6.9060507_at_dlc.fi>

Hello, Dave and the list,

when we are talking about human observations, they are
allways subjective. Donīt mean yours now...;-

Just wondering, if somebody has opportunity to have some
data from air force or civilian air radars or weather-service
radars, this case should be cleared. Donīt know, how long
they store the tapes, but it should be some 6 months usually.

The military radar-data is usually secret, also civilian air can
be today, but when you are asking for just "unusual" phenomenon
during this time, it should be possible to get the information. Sure
not for everybody, but if some official organisation, like university
or so, makes the inquiry, it may make it a bit easier.

The fragments of the meteoroid should be seen as an
unusual data in low-altitude radars, also the ablation and
ionisation of the material should left marks on radar-data in
higher altitudes.

In my opinion, the weather-radars may be the easiest...;-

Just my 2 cents again...

pekka



dlj0202_at_access-4-free.com wrote:

>Hello List,
>
>I have some interesting information regarding this thread. I
>saw the Park Forest meteor just after it came below the
>cloud deck (the Chicago area was overcast at the time), and
>the main fireball and 3 fragments extinguished about 1
>second after I spotted it. I just got off the phone with our
>local NWS office to find out what the cloud ceiling height
>was at that time. I was told that it was 7000 (seven
>thousand) feet. So, the upper limit for when the fireball
>extinguished is 7000 feet. I saw this between 11:50 pm and
>11:51 pm (my car clock is about 30 seconds fast and it
>showed 11:51 pm when I looked at it immediately after seeing
>the fireball). Hope this is helpful.
>
>Regards,
>
>Dave Johnson
>
>----- Original Message Follows -----
>Greetings Steve & List
>
>Steve you wrote:
>
>"Out of all the people I have talked with here (into the
>hundreds
>now) many saw the flash, quite a few heard the sonic booms,
>but few
>actually experienced the impacting first hand. Matt was the
>first
>person that I know of who both saw the fireball and
>witnessed (more or less) the impact".
>
>
>I also had the good fortune of talking to a witness that saw
>and
>heard the fireball and witnessed (more or less) the impact.
>Paulette
>Garza was standing in front of her house when the event
>happened. The
>first flash a bit to the south of PF was what caught her
>attention. I
>believe this is the detonation that dropped meteorites in
>the Steger,
>Crete area. She then saw a much brighter second flash nearly
>directly
>overhead. (I feel this detonation dropped the meteorites
>that fell on
>Park Forest and Olympia Fields). Surprisingly she did not
>hear the
>meteorite crash into her house that almost hit her son
>Robert, but
>when she walked back into the house that night it was
>immediately
>apparent that all hell had broken loose.
>
>You also wrote:
>
>"Now, did the fireball extinguish at 12 mile up, or possible
>higher
>or lower"?
>
>Actually the bolide did not extiguish over Park Forest at
>all, there
>were merely two detonation events over the south suburbs.
>The bolide
>itself continued on for quite a bit longer (dropping
>meteorites all
>along the flight path). The "main mass" is many, many miles
>downrange
>of Park Forest. I continue to find and interview witnesses
>who
>actually saw the bolide and hope (at some point in the not
>too
>distant future) to pinpoint where the main mass actually
>made ground.
>
>Back to the time and date of the actual fall; MAPS has it at
>23:50
>hours. My calculations from over 20 reliable witnesses (who
>made note
>of the time thinking it was an Iraqui invasion) put the fall
>at
>23:54. I was able to verify this somewhat by the times shown
>on the
>various screens of police dashboard cams and news broadcast
>shots,
>security cameras, etc... that actually were "filming" at the
>time of
>the fall. (The time is always on the screen somewhere). To
>be honest,
>I'm not sure if I've seen all of the "film" that was shot of
>the
>fireball, but based on the above, 23:54 is what I'd call the
>official
>time.
>
>Now, what time did the meteorite hit the ground? I'm
>clueless.
>
>
>Steve
>
>
>
>=====
>Steve Witt
>IMCA #9020
>
>http://www.meteoritecollectors.org
>
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-- 
Pekka Savolainen
Jokiharjuntie 4
FIN-71330 Rasala
FINLAND
+ 358 400 818 912
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Received on Sat 14 Jun 2003 02:21:10 AM PDT