Tropical Storm KARINA
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TROPICAL STORM KARINA DISCUSSION NUMBER 49
NWS NATIONAL HURRICANE CENTER MIAMI FL EP112014
800 PM PDT SUN AUG 24 2014
Karina's cloud pattern continues to rapidly degrade, with the
remaining deep convection located about 90 miles west-northwest
of the exposed center of circulation. The initial intensity is
lowered to 40 kt based on a blend of the subjective and objective
satellite intensity estimates and an earlier UW-CIMSS AMSU-A
intensity estimation. Moderate southeasterly vertical shear, as a
result of Marie's large upper-level anticyclone, should result in
continued weakening to a depression in 12 hours. The cyclone is
forecast to become a post-tropical remnant low in 24 hours and
ultimately dissipate or become absorbed by major hurricane Marie in
3 days or less, as indicated by the SHIPS and LGEM guidance.
The initial motion is estimated to be 095/8, within the
diminishing low- to mid westerly flow produced by post-tropical
cyclone Lowell to the north. Karina should turn toward the
east-southeast around the 24 hour period as the cyclone is steered
around the southwest periphery of approaching Hurricane Marie. The
official NHC forecast track is nudged southward beyond the 24 hour
period, following the trend in the GFEX and the TVCE guidance.
FORECAST POSITIONS AND MAX WINDS
INIT 25/0300Z 17.5N 129.3W 40 KT 45 MPH
12H 25/1200Z 17.4N 128.2W 30 KT 35 MPH
24H 26/0000Z 17.2N 127.3W 25 KT 30 MPH...POST-TROP/REMNT LOW
36H 26/1200Z 16.5N 126.5W 25 KT 30 MPH...POST-TROP/REMNT LOW
48H 27/0000Z 15.9N 125.3W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 28/0000Z...DISSIPATED
$$
Forecaster Roberts
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