92L (from Gary Padgett's TC Summary)

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senorpepr
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92L (from Gary Padgett's TC Summary)

#1 Postby senorpepr » Mon Jul 13, 2009 8:29 pm

I've been meaning to read Gary Padgett's Monthly TC Summary for June (which came into my e-mail several days ago). He had a nice little blurb on 92L...

Gary Padgett wrote: In the North Atlantic basin, an interesting low-pressure area north
of the Azores was numbered as an invest area (92L), and the system was
referenced in TPC/NHC's Tropical Weather Outlooks. The LOW exhibited
a convective cloud pattern consistent with a subtropical storm, and
SAB's Hebert/Poteat numbers reached ST3.0, suggesting winds of 45 kts.
The system formed within the envelope of an upper-level cold LOW, and
according to Jack Beven, was capped with a very large upper-level warm
core. This warm core was likely created by a suppressed tropopause
and stratospheric air intrusion rather than warming due to convective
heating, suggesting the system was not a tropical cyclone. SSTs were
near 15 C, while AMSU data indicated that 500-mb temperatures were
around -20 to -24 C. It is within the realm of possibility that this
system might be reviewed for inclusion as a subtropical cyclone, but
I tend to think it doubtful that this LOW will ever find its way into
the Atlantic Best Tracks file.
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