000
ACPN50 PHFO 182341
TWOCP 

TROPICAL WEATHER OUTLOOK
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI
200 PM HST SUN AUG 18 2013

FOR THE CENTRAL NORTH PACIFIC...BETWEEN 140W AND 180

1. SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A SURFACE TROUGH OR 
POSSIBLE SMALL SURFACE CIRCULATION CENTER LOCATED ABOUT 1150 MILES 
WEST SOUTHWEST OF LIHUE...HAWAII ARE MOVING WEST WESTWARD AT 10 TO 
15 MPH. LITTLE SIGNIFICANT DEVELOPMENT OF THIS SYSTEM IS EXPECTED 
DUE TO ITS CLOSE PROXIMITY TO THE OUTFLOW FROM TROPICAL STORM 
PEWA...WHICH CROSSED THE DATELINE YESTERDAY AND HAS BEEN CREATING 
UNFAVORABLE WINDS ALOFT ABOVE THE SYSTEM. THIS SYSTEM HAS A LOW 
CHANCE...20 PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 
48 HOURS.

2. SHOWERS AND THUNDERSTORMS ASSOCIATED WITH ANOTHER SURFACE TROUGH 
LOCATED ABOUT 750 MILES WEST SOUTHWEST OF LIHUE...HAWAII ARE MOVING 
WESTWARD AT 10 TO 15 MPH. THUNDERSTORMS HAVE INCREASED OVER THE PAST 
FEW HOURS...BUT LITTLE SIGNIFICANT DEVELOPMENT OF THIS SYSTEM IS 
EXPECTED DUE TO STRONG UPPER LEVEL WINDS OVER THE SURFACE TROUGH. 
THIS SYSTEM HAS A LOW CHANCE...10 PERCENT...OF BECOMING A TROPICAL 
CYCLONE DURING THE NEXT 48 HOURS.

3. SHOWERS AND THUNDERSTORMS ASSOCIATED WITH A WEAK DISTURBANCE 
LOCATED ABOUT 1020 MILES EAST SOUTHEAST OF HILO...HAWAII HAVE 
INCREASED IN COVERAGE AND INTENSITY SINCE THIS MORNING. 
HOWEVER...LITTLE SIGNIFICANT DEVELOPMENT OF THIS SYSTEM IS EXPECTED 
AS THIS DISTURBANCE MOVES WEST NORTHWEST AT 10 TO 15 MPH DURING THE 
NEXT 24 TO 36 HOURS DUE TO VERY STRONG SOUTHERLY WINDS OVER THE 
SYSTEM. THE UPPER LEVEL WINDS MAY RELAX SLIGHTLY BY LATE 
MONDAY...AND THIS SYSTEM HAS A LOW CHANCE...10 PERCENT...OF BECOMING 
A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.

ELSEWHERE...NO TROPICAL CYCLONES ARE EXPECTED THROUGH TUESDAY 
AFTERNOON.

$$

POWELL