[comp.graphics] Complete list of Hurricane Hugo pictures

roskos@IDA.ORG (Eric Roskos) (09/23/89)

The following is the updated list of all the Hurricane Hugo GIF
pictures.  Most of these are temporarily available on
WSMR-SIMTEL20.ARMY.MIL for a short time longer, but have to be deleted
because they are taking over 4MB of disk space.  They are in
PD3:<MISC.GIF>.  All times in the table below are EDT (E+1).  I've tried
to give a fairly critical description of the images so that if you are
only interested in a few of the pictures that look good, you can tell
which to skip and which to choose.  But I've included all of them even
if the signal was not too good, for the people interested in tracking
the hurricane based on the satellite pictures, or similar observations. 

					-- Eric Roskos
					   roskos@IDA.ORG

(Please don't FTP to IDA.ORG trying to access these pictures.  We don't
have FTP service available here, so they aren't archived here.)

HUGO1.GIF	9/17	7:15AM	GOES IR
	Has some noise over the hurricane image due to HF propagation
	conditions.  HF conditions are currently only moderately good
	here for receiving the GOES pictures, so this tends to be a
	problem in a number of them (conditions were much better for
	the Hurricane Gabrielle pictures).

HUGO2.GIF	9/17	8:20AM	Meteor 3-2
	This is a picture from the Soviet Meteor satellite, before I
	modified my receiver to have a wider bandwidth.  You may want
	to skip this one unless you are really interested in having
	all of them.

HUGO3.GIF	9/17	11:00AM	Meteor 2-16
	This and subsequen Meteor pictures were recorded after I modified
	my receiver to have a 25 KHz bandwidth, so the picture quality
	is better.  (I'm still looking for a way to get a wider
	bandwidth, though.)

HUGO4.GIF	9/17	1:47PM	NOAA 11
	An enlargement of the hurricane as it approaches Puerto Rico
	and the Dominican Republic; the latter is visible in the picture.
	At this time the satellite was passing over the hurricane as it
	came over the horizon at my location, so the image emerges out
	of the background noise as the signal is acquired.

HUGO5.GIF	9/17	1:47PM	NOAA 11
	An unzoomed image of the above; I was testing the new IF filter
	in the radio at this time, so the quality of the picture varies.
	You may want to skip this one too.

HUGO6.GIF	9/17	7:15PM	GOES IR
	This is a fairly good GOES Infrared picture of the hurricane
	as it began to reach Puerto Rico.

HUGO7.GIF	9/17	7:15PM	GOES IR
	An enlargement of HUGO6.GIF.

HUGO8.GIF	9/18	8:00AM	Meteor 3-2
	Moderate picture of the hurricane from the Soviet satellite
	Monday morning.

HUGO9.GIF	9/18	7:00PM	GOES IR
	Also moderate quality due to HF conditions.  At this point the
	hurricane had "wobbled around" Puerto Rico and is slightly to
	the north of it.

HUGO10.GIF	9/18	7:00PM	GOES IR
	An enlargement of HUGO9.GIF.

HUGO11.GIF	9/19	7:00AM	GOES IR
	This picture is only of interest if you want to see the geographic
	location of the hurricane, since the HF conditions were even worse
	than usual.  You probably should skip this one unless you want to
	see the location of the hurricane as shown in HUGO13 and 14.

HUGO12.GIF	9/19	7:00AM	GOES IR
	Enlargement of HUGO11.  See comments above.

HUGO13.GIF	9/19	7:40AM	Meteor 3-2
	The best picture thus far of the hurricane.  It is illuminated 
	obliquely by the recently-risen sun to the East, so some shadow
	detail is visible, including the small "eye" feature.  Since
	the hurricane had moved North some by this time, and since Meteor
	3-2 gives a strong signal and is higher than the NOAA and Meteor 2
	satellites, the quality of the signal was better than in previous
	pictures.  Note the length of the shadows to the left of some of
	the isolated clouds to the left of the hurricane, and the sea-glint
	from the sun reflecting off the ocean to the right.

HUGO14.GIF	9/19	7:40AM	Meteor 3-2
	An enlargement of HUGO13.GIF.  If you only want to get one picture
	from the Hugo images thus far, this is the best one.  The very
	delicate fringe of clouds to the South of the hurricane is clearly
	visible, as well as the raised center and very small eye.

HUGO15.GIF	9/19	7:00PM	GOES IR
	HF propagation conditions were very good for most of this image
	(they steadily improved throughout the image), but the subcarrier seemed
	to be modulated by a fairly high-frequency (AF-range) signal at
	the transmitter, with the result that the image is greyish and
	mottled.  It gives a good view of the position of the hurricane
	a few hours ago this evening, as it heads towards the US, but
	the quality is not very good due to the above problem.
	Iris is also now clearly visible as distinct from Hugo (though
	it is also visible in some of the earlier images), following
	the path Hugo took a few days ago.

HUGO16.GIF	9/20	7:20AM	Meteor 3-2
	This is a very clear picture of the hurricane, although it is
	partly off the left (West) edge of the image.  Vertical doubling
	of scan lines was used in this picture to make the aspect ratio
	closer to square, since the Soviet satellites tend to stretch
	the image horizontally.  Most of the other Meteor pictures are
	not displayed with doubling of scan lines, so you can see more
	of the image on the screen, but it looks slightly "squashed" 
	along the vertical axis.

HUGO17.GIF	7/20	7:20AM	Meteor 3-2
	An enlargement of the original, un-doubled image used to produce
	HUGO16.GIF.  This is a very high-quality image of the hurricane.

HUGO18.GIF	9/20	8:30AM	NOAA 10
	Picture from the US TIROS-N NOAA 10 satellite, showing the entire
	East coast of the US, with the hurricane off the coast of Florida.
	This is an excellent-quality image.

HUGO19.GIF	9/20	8:30AM	NOAA 10
	Enlargement of the hurricane from HUGO18.GIF.

HUGO20.GIF	9/20	7:00PM	GOES IR
	Good infrared image, with the hurricane halfway between Puerto Rico
	and the US.  When looking at the GOES IR pictures, bear in mind that the
	coldest (usually the highest) clouds appear whitest in the image.
	You can also sometimes tell very general relative temperatures of
	areas of sea and land, as well.

HUGO21.GIF	9/20	7:00PM	GOES IR
	Enlargement of HUGO20.GIF.

HUGO22.GIF	9/21	7:05AM	Meteor 3-2
	The hurricane is not visible in this picture; it is to the West of
	the satellite, just out of range.  The trail of clouds left behind
	by the passing hurricane is visible, however.

HUGO23.GIF	9/21	8:05AM	NOAA 10
	The eye is clearly visible for the first time in this image.  The
	hurricane is beginning to approach the coast of the US.

HUGO24.GIF	9/21	8:05AM	NOAA 10
	An enlargement of HUGO23.GIF.

HUGO25.GIF	9/21	2:50PM	NOAA 10
	An early afternoon image of the hurricane; the sun is directly overhead,
	so not much shadow detail is visible.  There are also some noise bars
	over the hurricane image because of the satellite passing between the
	antenna and the roof of a building, so this picture is of limited
	quality.  However, it is possible to see that the rain bands of the
	hurricane have reached land at this time.

HUGO26.GIF	9/21	2:50PM	NOAA 10
	Enlargement of HUGO25.GIF.

HUGO27.GIF	9/21	7:01PM	GOES IR
	Excellent infrared image; the hurricane is off the coast of South
	Carolina, approaching land.  The outer edges of the hurricane have
	crossed inland and are causing rain throughout the coastal areas.

HUGO28.GIF	9/21	7:01PM	GOES IR
	Enlargement of HUGO27.GIF.

HUGO29.GIF	9/22	1:01AM	GOES IR
	About an hour after the hurricane reached Charleston, SC.  The eye
	of the hurricane is visible, having already moved a good distance
	inland.  The picture has noise in it due to the limited propagation
	conditions at this time of night, but the picture is of historical
	interest.  The roof of the National Weather Service headquarters
	in Charleston was blown off by the portion of the hurricane that
	is over Charleston in this image.

HUGO30.GIF	9/22	1:01AM	GOES IR
	Enlargement of HUGO29.GIF.

HUGO31.GIF	9/22	2:43PM	NOAA 11
	Remnants of Tropical Storm Hugo are now far inland; the sky had
	begun to clear at the antenna site, in fact, by this time.  (Note
	that this file is chronologically out of sequence; it should go
	where the missing HUGO34.GIF file is, after the 9/22 8:40AM
	images.)

HUGO32.GIF	9/22	8:40AM	Meteor 3-2
	An excellent picture of the hurricane inland over Hickory, NC the
	morning (about 8 hours) after it reached land.  The storm is still
	fairly dense and well-organized, with a recognizable center.  Wind
	speeds were reported at around 75 mi/hr at this time in Hickory.

HUGO33.GIF	9/22	8:40AM	Meteor 3-2
	Same image as HUGO32.GIF, but shifted further Northward to show
	structure of clouds in front of advancing hurricane.

HUGO34.GIF	(No file with this name exists.)

HUGO35.GIF	9/23	8:30AM	Meteor 3-2
	About 32 hours after the hurricane reached land, some remnants of it
	are still visible far to the North, over the northeastern United
	States and Newfoundland.  The principal weather feature visible in
	this picture, however, is the very highly visible cold front moving
	to the Southeast over the Appalachian mountains.  Compare this
	picture with HUGO36.GIF to identify the location of various objects
	in the picture; HUGO36.GIF was received from the US NOAA 10 satellite,
	which resolves the boundary between land and water better, so it is
	possible to see the continent outline and the great lakes better in
	that image, although the Soviet Meteor 3-2 gives a larger and 
	higher-contrast image, so some better cloud detail is visible in
	HUGO35.GIF.

HUGO36.GIF	9/23	9:00AM	NOAA 10
	This picture was recorded about 1/2 hour after HUGO35.GIF, from the
	US NOAA-10 (TIROS-N) spacecraft.  The entire East Coast of the US
	is clearly visible.  This image is centered somewhat to the South
	of HUGO35.GIF, since Meteor 3-2 is higher and seems to have a stronger
	transmitter, and thus continued to be received until it reached the
	coast of Greenland.  The Channel 3 Infrared image from NOAA 10 is
	in the right half of the picture.
-- 
Eric Roskos (roskos@CS.IDA.ORG or Roskos@DOCKMASTER.NCSC.MIL)