ralphfla
(Weather Watcher)
Sun Oct 06 2013 12:58 AM
Re: Tropical Karen forms in Southern Gulf, Hurricane & Tropical Storm Watches Issued


Karen has essentially remained stationary for the last several hours
and that lack of motion...coupled with increasing upper-level winds
ahead of an eastward-moving deep-layer trough...has increased the
shear significantly across the cyclone. The result is that
convection has weakened and become displaced well to the east and
southeast of the low-level circulation center. Satellite
classifications from TAFB supported keeping Karen as a borderline
tropical storm at 00z...but the lack of convection near the center
since then requires a downgrade to depression status at the 03z
advisory time. Given that the vertical wind shear is forecast to
get even stronger over the next 2 days...re-strengthening back to
tropical storm status is not likely...especially since the
mid-levels of the troposphere will become increasingly drier

Not going back to a storm will be lucky to hold onto a depression



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