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BULLETIN
HURRICANE IVAN ADVISORY NUMBER  23
NATIONAL WEATHER SERVICE MIAMI FL
11 PM AST FRI SEP 25 1998

...IVAN THREATENS THE AZORES... 
 
HURRICANE CONDITIONS ARE EXPECTED TO SPREAD OVER PORTIONS OF THE
AZORES ISLANDS DURING THE NEXT 24 TO 36 HOURS.
 
AT 11 PM AST...0300Z...THE CENTER OF HURRICANE IVAN WAS LOCATED NEAR
LATITUDE 38.5 NORTH...LONGITUDE  37.7 WEST OR ABOUT 570 MILES...
915 KM...WEST OF LAJES IN THE AZORES ISLANDS.
 
IVAN IS MOVING TOWARD THE EAST-NORTHEAST NEAR 21 MPH  ...33
KM/HR...AND A GRADUAL TURN TOWARD THE EAST WITH A FURTHER INCREASE
IN FORWARD SPEED IS EXPECTED DURING THE NEXT 12 TO 24 HOURS. 

SATELLITE IMAGES INDICATE THAT MAXIMUM SUSTAINED WINDS HAVE
INCREASED TO NEAR 90 MPH...150 KM/HR...WITH HIGHER GUSTS.  LITTLE
SIGNIFICANT CHANGE IN STRENGTH IS LIKELY OVERNIGHT.
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO  35 MILES... 55 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 115 MILES...185 KM.
 
ESTIMATED MINIMUM CENTRAL PRESSURE IS  975 MB...28.79 INCHES.

REPEATING THE 11 PM AST POSITION...38.5 N... 37.7 W.  MOVEMENT
TOWARD...EAST-NORTHEAST NEAR 21 MPH.  MAXIMUM SUSTAINED WINDS... 90
MPH.  MINIMUM CENTRAL PRESSURE... 975 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
5 AM AST...SATURDAY.
 
PASCH
 
STRIKE PROBABILITIES ASSOCIATED WITH THIS ADVISORY NUMBER CAN BE
FOUND UNDER AFOS HEADER MIASPFAT4 AND WMO HEADER WTNT74 KNHC.
 
 
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