National Weather Service United States Department of Commerce

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000
FZPN40 PHFO 231538
HSFNP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN SEP 23 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT
OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN
TWICE THE SIGNIFICANT WAVE HEIGHT.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC SEP 23 2018.
24 HOUR FORECAST VALID 1200 UTC SEP 24 2018.
48 HOUR FORECAST VALID 1200 UTC SEP 25 2018.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 29N169W 1008 MB NEARLY STATIONARY. TROUGH FROM LOW TO 21N168W 
TO 13S170W NEARLY STATIONARY. S TO SE WINDS 20 TO 25 KT AND SEAS 8 
TO 9 FT N OF 22N BETWEEN 162W AND 167W. SCATTERED MODERATE TSTMS 
WITHIN 270 NM E OF LOW AND TROUGH. ISOLATED MODERATE TSTMS ELSEWHERE 
WITHIN 90 NM OF LOW...AND FROM 12N TO 17N BETWEEN 163W AND 172W.
.24 HOUR FORECAST LOW 29N170W 1007 MB. TROUGH FROM LOW TO 14N166W. S 
TO SE WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT N OF 24N BETWEEN 160W AND 
164W.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 30N168W TO 17N169W TO 
14N180W. S TO SE WINDS 20 TO 25 KT AND SEAS 8 TO 10 FT N OF 24N 
BETWEEN 156W AND 162W.

.LOW 12N161E 1006 MB MOVING SW 10 KT. TROUGH FROM LOW TO 20N168E 
MOVING WNW 10 KT. E TO NE WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT FROM 
20N TO 25N W OF 172E. ISOLATED MODERATE TO STRONG TSTMS S OF 23N W 
OF 174W.
.24 HOUR FORECAST LOW AND TROUGH MOVED W OF FORECAST AREA. E TO NE 
WINDS 20 TO 25 KT AND SEAS 8 TO 10 FT W OF 166E BETWEEN 20N AND 25N.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS. SEAS 8 FT OR LOWER.

.RIDGE FROM 30N150W TO 20N162W NEARLY STATIONARY.

.REMAINDER FORECAST AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LOWER.

.MONSOON TROUGH FROM 09N140W TO 11N147W TO 08N164W. ISOLATED 
MODERATE TSTMS FROM 06N TO 15N E OF 164W.

.SCATTERED MODERATE TO STRONG TSTMS FROM 03N TO 10N BETWEEN 166W AND 
172W.

$$

.HONOLULU FORECAST OFFICE.

Additional Resources:

Waimea Buoy Kailua Buoy Lanai Buoy Barbers Point #2 Pauwela, Maui Hilo Bay Buoy Kaneohe Bay Buoy Hanalei Kauai Buoy Kilo Nalu
Buoy 51001 Buoy 51101 Buoy 51000 Buoy 51100 Buoy 51002 Buoy 51003 Buoy 51004