806  
WTNT44 KNHC 081443  
TCDAT4  
 
TROPICAL STORM RINA DISCUSSION NUMBER 10  
NWS NATIONAL HURRICANE CENTER MIAMI FL AL192017  
1100 AM AST WED NOV 08 2017  
 
RINA CONTINUES TO HAVE SOME SUBTROPICAL CHARACTERISTICS WITH  
SATELLITE IMAGES SHOWING AN ASYMMETRIC, COMMA-CLOUD STRUCTURE.  
STILL, AMSU AND MODEL ANALYSES ARE SHOWING THE SYSTEM AS MODERATELY  
WARM CORE, AND THERE ARE NO SIGNS OF FRONTS NEAR THE CORE. THUS,  
RINA WILL STAY AS A TROPICAL CYCLONE, AND 50 KT IS KEPT AS THE  
INITIAL WIND SPEED BASED ON THE LATEST SATELLITE ESTIMATES. LITTLE  
CHANGE IN STRENGTH IS EXPECTED BEFORE RINA LOSES ALL DEEP CONVECTION  
WITHIN THE NEXT 24 HOURS OVER CHILLY WATERS. THE SYSTEM SHOULD  
BECOME EMBEDDED WITHIN A FRONTAL ZONE OVER THE FAR NORTH ATLANTIC IN  
A DAY OR TWO, AND DISSIPATE WEST OF IRELAND. NO CHANGES WERE MADE TO  
THE PREVIOUS INTENSITY FORECAST.  
 
THE STORM IS MOVING NORTHWARD A BIT FASTER AT 18 KT. A CONTINUED  
ACCELERATION AND A TURN TO THE NORTH-NORTHEAST IS EXPECTED OVERNIGHT  
AS RINA MOVES AHEAD OF A SHORTWAVE OVER THE CANADIAN MARITIMES. THE  
CYCLONE SHOULD MOVE QUITE RAPIDLY TO THE NORTHEAST BY LATE THURSDAY  
AND EAST-NORTHEAST ON FRIDAY DUE TO STRONG MID-LATITUDE FLOW. THE  
WESTWARD GUIDANCE TREND IN THE SHORT-TERM PART OF THE FORECAST  
IS STILL PRESENT, AND THE NEW NHC PREDICTION IS MOVED IN THAT  
DIRECTION IN THE FIRST 24 HOURS, WITH LITTLE CHANGE THEREAFTER.  
 
FORECAST POSITIONS AND MAX WINDS  
 
INIT 08/1500Z 39.4N 48.7W 50 KT 60 MPH  
12H 09/0000Z 42.2N 47.8W 50 KT 60 MPH  
24H 09/1200Z 47.1N 44.3W 50 KT 60 MPH...POST-TROPICAL  
36H 10/0000Z 52.5N 36.0W 50 KT 60 MPH...POST-TROP/EXTRATROP  
48H 10/1200Z 55.5N 22.5W 45 KT 50 MPH...POST-TROP/EXTRATROP  
72H 11/1200Z...DISSIPATED  
 

 
FORECASTER BLAKE  
 
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