[Tropical] Tropical Cyclone Discussion

[EMWIN Server]

WTNT44 KNHC 181438
TCDAT4
TROPICAL STORM IRENE DISCUSSION NUMBER  56
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
11 AM EDT THU AUG 18 2005

IRENE HAS ACCELERATED FURTHER AND IS NOW MOVING NORTHEASTWARD NEAR
40 KT.  ALTHOUGH IT IS DIFFICULT TO ESTIMATE THE INTENSITY FROM
SATELLITE PICTURES...SUCH A FAST FORWARD MOTION WOULD SUPPORT 50 KT
WINDS.  VISIBLE SATELLITE IMAGERY AND SURFACE OBSERVATIONS INDICATE
THAT THE STORM IS INTERACTING WITH A FRONTAL ZONE AND ASSOCIATED
EXTRATROPICAL LOW JUST EAST OF NEWFOUNDLAND...INDICATING THAT IRENE
IS TRANSITIONING INTO AN EXTRATROPICAL STORM.  LATEST GLOBAL MODEL
GUIDANCE INDICATES THAT THE EXTRATROPICAL VERSION OF IRENE WILL
SOON BE ABSORBED BY THE LARGER BAROCLINIC CYCLONE...AND SPREAD A
LARGE AREA OF GALE FORCE WINDS OVER A PORTION OF THE NORTH
ATLANTIC.

THIS IS THE LAST ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON
IRENE.  FUTURE INFORMATION...IF ANY...ON THIS SYSTEM MAY BE FOUND
IN HIGH SEAS FORECASTS ISSUED BY THE OCEAN PREDICTION
CENTER...UNDER AWIPS HEADER NFDHSFAT1 AND WMO HEADER FZNT01 KWBC.

FORECASTER PASCH


FORECAST POSITIONS AND MAX WINDS

INITIAL      18/1500Z 45.0N  47.5W    50 KT...BECOMING EXTRATROPICAL
 12HR VT     19/0000Z...ABSORBED BY LARGER EXTRATROPICAL LOW

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