000
WTPZ34 KNHC 110231
TCPEP4
BULLETIN
HURRICANE HERNAN ADVISORY NUMBER  18
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   EP092008
800 PM PDT SUN AUG 10 2008

...HERNAN EXPECTED TO WEAKEN TOMORROW...
 
AT 800 PM PDT...0300 UTC...THE CENTER OF HURRICANE HERNAN WAS
LOCATED NEAR LATITUDE 18.4 NORTH...LONGITUDE 128.4 WEST OR ABOUT
1235 MILES...1985 KM...WEST OF THE SOUTHERN TIP OF BAJA CALIFORNIA.
 
HERNAN IS MOVING TOWARD THE WEST-NORTHWEST NEAR 10 MPH...17 KM/HR...
A TURN TO THE WEST IS FORECAST ON MONDAY...FOLLOWED BY A TURN
TOWARD THE WEST-SOUTHWEST ON TUESDAY.
 
MAXIMUM SUSTAINED WINDS ARE NEAR 85 MPH...140 KM/HR...WITH HIGHER
GUSTS.  STEADY WEAKENING IS FORECAST DURING THE NEXT COUPLE OF
DAYS...AND HERNAN IS EXPECTED TO BECOME A TROPICAL STORM TOMORROW.

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.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 980 MB...28.94 INCHES.
 
REPEATING THE 800 PM PDT POSITION...18.4 N...128.4 W.  MOVEMENT
TOWARD...WEST-NORTHWEST NEAR 10 MPH.  MAXIMUM SUSTAINED WINDS...85
MPH.  MINIMUM CENTRAL PRESSURE...980 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
200 AM PDT.
 
$$
FORECASTER BLAKE