I think it helps diagnose an #ERC is actually occurring w/ #Irma. Still unknown how it may finish, but seems more classic than last night.
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You can use of #radar spectrum width to show dev. of #Irma's secondary #eyewall b/c it depicts areas of strong boundary layer turbulence.pic.twitter.com/FwlKnEQshK
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Correction- this is specific differential phase & NOT spectrum width. SDP still useful to id dbl eyewall b/c it highlights heavy rain rates.
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This is what spectrum width actually looks like. Both SDP&SW highlight double eyewall, but one by enh. rain rates, & one by enh. turbulence!pic.twitter.com/7mS49smRlh
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I'm confused. Your image is KDP and your tweet says SW. Did I miss something?
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Was going to say same thing. KDP will show extreme rain rates or (at higher levels) updraft microphysics. Spectrum width shows enh turbulnce
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Steve Nesbitt
@70_dbz has some nice plots up of spectrum width. Would link but don't know how. -
Yep you guys are right. Thought it was spectrum width, but it's actually KDP... though you do see the same signature using SW.pic.twitter.com/zxIsrN5WGK
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Yup, but for rather different reasons
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how is it possible that this is happening while the Hurricane maintains 185 MPH with lowering central pressure???!!!??
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Eyewall Replacement Cycles are part of the strengthening process, the storm comes back stronger after each one
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yes but don't they usually drop in wind speed and gain central pressure during?
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The majority do, but about 28% of TCs actually intensify after the secondary eyewall formation - at least that was found w/ Pacific TCs.
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Could
#Irma have her ERC, and end up stronger than before? Environment is right, is it not?Thanks. Twitter will use this to make your timeline better. UndoUndo
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This is one of the better tweets I have seen on science and Irma.
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My pencil needs sharper. Looks perfect to use.
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I believe so
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