[Tropical] Tropical Cyclone Discussion
EMWIN Server
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Sun Jul 20 10:02:43 CDT 2008
WTNT42 KNHC 201502
TCDAT2
TROPICAL STORM BERTHA DISCUSSION NUMBER 70
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL022008
1100 AM EDT SUN JUL 20 2008
BERTHA IS RAPIDLY LOSING TROPICAL CHARACTERISTICS. THE WIND FIELD
HAS BECOME EXTREMELY ASYMMETRIC AND THE CONVECTION IS DIMINISHING
NEAR THE CENTER. THUS BERTHA IS BEING DECLARED EXTRATROPICAL AND
THIS IS THE LAST ADVISORY. SHIP ABCC4 AND QUIKSCAT SUGGEST THE
MAXIMUM WINDS REMAIN NEAR 60 KT. A SLOW WEAKENING IS FORECAST IN
LINE WITH GLOBAL MODEL GUIDANCE. THE TRACK FORECAST IS IN GOOD
AGREEMENT WITH THE MODEL CONSENSUS AND SIMILAR TO THE PREVIOUS
ADVISORY.
FORECAST POSITIONS AND MAX WINDS
INITIAL 20/1500Z 51.3N 35.7W 60 KT...EXTRATROPICAL
12HR VT 21/0000Z 55.2N 31.2W 55 KT...EXTRATROPICAL
24HR VT 21/1200Z 61.0N 24.3W 50 KT...EXTRATROPICAL
36HR VT 22/0000Z...DISSIPATED
$$
FORECASTER KNABB/BLAKE
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