ATL: IGOR - Ex Hurricane - Discussion

[pcolaman]

BEAUTIFUL!!!

Quite impressive !!

[pcolaman]

last loop looks to the wsw wobble

[Swimdude]

Interesting things happening with Igor over the last half hour or so... If you check out this rainbow loop (http://www.ssd.noaa.gov/goes/flt/t1/flash-rb.html) you'll notice two things: 1) the eye has lost its perfect circular shape, perhaps indicating an impending EWRC, and 2) as a result of the irregular shape of the eye, Igor will have to move at about 280-290 to hit its next forecast point.

[pcolaman]

http://www.ssd.noaa.gov/goes/flt/t1/flash-vis.html

[pcolaman]

Interesting things happening with Igor over the last half hour or so... If you check out this rainbow loop (http://www.ssd.noaa.gov/goes/flt/t1/flash-rb.html) you'll notice two things: 1) the eye has lost its perfect circular shape, perhaps indicating an impending EWRC, and 2) as a result of the irregular shape of the eye, Igor will have to move at about 280-290 to hit its next forecast point.

Agree

[HURAKAN]

Eye remains as circular as ever, if we could add more pixels to the image, it would look even more round

[Swimdude]

Eye remains as circular as ever, if we could add more pixels to the image, it would look even more round

Hm! Apparently my eyesight failed me. I think I'm correct on point #2 however. I think.

[plasticup]

So what do y'all think about interaction between Julia and Igor? Assuming both storms are in their predicted locations on day 5 (which I realize is unlikely), the two storms will be half the distance apart as they are today. Couldn't this alter steering patterns?

When two cyclones approach one another, their centers will begin orbiting cyclonically about a point between the two systems. The two vortices will be attracted to each other, and eventually spiral into the center point and merge. When the two vortices are of unequal size, the larger vortex will tend to dominate the interaction, and the smaller vortex will orbit around it. This phenomenon is called the Fujiwhara effect, after Sakuhei Fujiwhara.[58]

Are they likely to come withing 800 miles of each other? Farther than that, and the Fujiwhara effect is negligible.

[pcolaman]

So about how many miles to the lesser Antillies would any guess it would be now ?

[Meso]

For what it's worth, one can confirm a WSW motion at what appears to be about 255`- 260` according to the latest model plots XTRP.

[Aquawind]

I am thinking Dunkin Donuts for lunch after looking at these pictures..

[pcolaman]

I am thinking Dunkin Donuts for lunch after looking at these pictures..

[Gustywind]

[Gustywind]

From SSD http://www.ssd.noaa.gov/PS/TROP/tdpositions.html
DATE/TIME LAT LON CLASSIFICATION STORM
13/1145 UTC 17.6N 49.2W T6.5/6.5 IGOR
13/0615 UTC 17.7N 48.3W T6.5/6.5 IGOR

[Gustywind]

Down to 17,5N...
000
WTNT21 KNHC 131440
TCMAT1
HURRICANE IGOR FORECAST/ADVISORY NUMBER 22
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112010
1500 UTC MON SEP 13 2010

THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

HURRICANE CENTER LOCATED NEAR 17.5N 49.7W AT 13/1500Z
POSITION ACCURATE WITHIN 10 NM

PRESENT MOVEMENT TOWARD THE WEST OR 265 DEGREES AT 9 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 933 MB

[Gustywind]

[SFLcane]

[Evil Jeremy]

http://www.nhc.noaa.gov/storm_graphics/AT11/refresh/AL1110W5_NL+gif/215913W5_NL_sm.gif

If Igor really is moving slightly south of west right now, I don't see how it will suddenly start moving WNW as soon as the NHC thinks.

[cycloneye]

Hey,tell me is not moving south of west.

[Cryomaniac]

That certainly looks south of west to me