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Hurricane EARL (Text)

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HURRICANE EARL DISCUSSION NUMBER  33
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL072010
1100 AM EDT THU SEP 02 2010

THERE HAS BEEN NO SIGNIFICANT CHANGES IN THE STRUCTURE OF EARL
DURING THE PAST FEW HOURS.  HOWEVER..MICROWAVE INAGERY SUGGEST THAT
AN EYEWALL REPLACEMENT COULD OCCUR SOON...IN WHICH CASE THE WIND
FIELD WOULD BECOME LARGER.  THE HURRICANE CONTINUES WITH A DISTINCT
EYE SURROUNDED BY DEEP CONVECTION.  SATELLITE INTENSITY ESTIMATES
AND DATA FROM A RECONNAISSANCE AIRCRAFT A FEW HOURS AGO INDICATE
THAT THE INITIAL INTENSITY IS 120 KNOTS.  EARL PROBABLY HAS ALREADY
REACHED ITS PEAK INTENSITY AND IT SHOULD SOON BEGIN TO WEAKEN
GRADUALLY AS THE SHEAR INCREASES. THE HURRICANE SHOULD WEAKEN EVEN
FASTER AFTER 36 HOURS...AS IT MOVES OVER A COLDER OCEAN.  EARL
SHOULD BECOME EXTRATROPICAL BY 72 HOURS AND DISSIPATE THEREAFTER AS
IT BECOMES ABSORBED BY A MUCH LARGER EXTRATROPICAL CYCLONE. 

AS ANTICIPATED...EARL HAS BEGUN TO MOVE NORTHWARD OR 355 DEGREES AT
16 KNOTS.  SINCE THE STEERING PATTERN HAS NOT CHANGED...EARL IS
FORECAST TO CONTINUE NORTHWARD TODAY. IN ABOUT 24 HOURS...THE
HURRICANE SHOULD BE ENCOUNTERING THE BASE OF THE MID-LATITUDE
WESTERLIES AND EARL SHOULD THEN TURN MORE TOWARD THE NORTH-NORTHEAST
AND NORTHEAST WITH AN INCREASE IN FORWARD SPEED.  THIS SHARP TURN
HAS BEEN CONSISTENTLY INDICATED FOR THE PAST COUPLE OF DAYS IN THE
OFFICIAL FORECAST AND BY THE TIGHTLY CLUSTERED TRACK GUIDANCE.

 
FORECAST POSITIONS AND MAX WINDS
 
INITIAL      02/1500Z 30.9N  74.8W   120 KT
 12HR VT     03/0000Z 33.5N  75.0W   115 KT
 24HR VT     03/1200Z 36.5N  73.5W   100 KT
 36HR VT     04/0000Z 40.0N  70.8W    85 KT
 48HR VT     04/1200Z 44.0N  67.0W    65 KT
 72HR VT     05/1200Z 53.5N  62.0W    40 KT...POST-TROP/EXTRATROP
 96HR VT     06/1200Z...ABSORBED BY A LARGE EXTRATROPICAL LOW
 
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FORECASTER AVILA
 
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