National Weather Service United States Department of Commerce

426
FZPS40 PHFO 240333
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC FRI JAN 24 2020

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 0000 UTC JAN 24 2020.
24 HOUR FORECAST VALID 0000 UTC JAN 25 2020.
48 HOUR FORECAST VALID 0000 UTC JAN 26 2020.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 14S170W 1005 MB MOVING ESE 10 KT. TROUGHS FROM LOW TO
20S164W TO 25S158W AND FROM LOW TO 09S178W TO 09S170E. WINDS W TO N
20 TO 30 KT AND SEAS 8 TO 11 FT WITHIN 180 NM EITHER SIDE OF A
LINE FROM 06S177W TO 08S173W TO 17S163W.
.24 HOUR FORECAST 17S169W 1001 MB. TROUGHS FROM LOW TO 22S166W TO
25S161W AND FROM LOW TO 13S179W TO 13S170E. WINDS NW TO NE 20 TO
35 KT WITHIN 570 NM N OF TROUGH AXIS E OF 173W. ALSO WINDS INCREASING
TO E TO SW 20 TO 25 KT WITHIN 180 NM S OF TROUGH AXIS E OF 173W.
SEAS 8 TO 14 FT WITHIN AN AREA BOUND BY 05S175W 08S165W 25S163W
22S171W 05S175W. NUMEROUS STRONG TSTMS WITHIN 180 NM EITHER SIDE OF
A LINE FROM 05S170E TO 05S178E TO 11S168W. SCATTERED MODERATE TO
STRONG TSTMS ELSEWHERE BETWEEN TROUGH AXIS AND 05S...AND ALSO WITHIN
300 NM S OF TROUGH AXIS.
.48 HOUR FORECAST LOW NEAR 21S167W 997 MB. TROUGH FROM LOW TO 18S176W
TO 15S177E. WIND 30 TO 45 KT WITHIN 240 NM OF LOW CENTER NE SEMICIRCLE. WINDS 30 TO 35 KT WITHIN 180 NM OF LOW CENTER SW SEMICIRCLE.
WINDS 20 TO 30 KT ELSEWHERE WITHIN 330 NM OF LOW CENTER. SEAS 14 TO
17 FT FROM 19S TO 23S BETWEEN 169W AND 163W. SEAS 8 TO 14 FT FROM 09S
TO 25S BETWEEN 175W AND 160W.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 11S160E TO 09S170E NEARLY STATIONARY. ISOLATED MODERATE
TO STRONG TSTMS FROM 02S TO 14S BETWEEN 160E AND 170E.
.24 HOUR FORECAST TROUGH FROM 11S160E TO 13S170E.
.48 HOUR FORECAST TROUGH FROM 11S160E TO 07S168E TO 08S176E.

.TROUGH FROM 08S152W TO 13S145W TO 15S136W MOVING SSE 10 KT. ISOLATED
MODERATE TSTMS WITHIN N150 NM EITHER SIDE OF TROUGH AXIS.
.24 HOUR FORECAST TROUGH FROM 11S149W TO 16S140W TO 18S134W.
.48 HOUR FORECAST TROUGH FROM 15S147W TO 19S142W TO 22S133W.

.RIDGE FROM 25S141W TO 18S153W TO 08S164W.
.24 HOUR FORECAST RIDGE FROM 25S141W TO 18S153W.
.48 HOUR FORECAST RIDGE FLATTENED OVER FORECAST AREA.

.OTHERWISE AND ELSEWHERE WINDS SE TO E 20 TO 25 KT FROM 22S TO 25S
BETWEEN 177E AND 167W.
.24 HOUR FORECAST WINDS SE TO E 20 TO 25 KT FROM 19S TO 25S BETWEEN
179W AND 169W.
.48 HOUR FORECAST WINDS SE TO E 20 TO 30 KT FROM 22S TO 25S BETWEEN
179W AND 169W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

$$

.FORECASTER BEDAL. HONOLULU HI.