247
FZPS40 PHFO 280341
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC SUN FEB 28 2021
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 28 2021.
24 HOUR FORECAST VALID 0000 UTC MAR 01 2021.
48 HOUR FORECAST VALID 0000 UTC MAR 02 2021.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.LOW NEAR 23S130W 1006 MB MOVING SE 15 KT. STATIONARY FRONT FROM LOW
TO 25S120W AND FROM LOW TO 20S138W TO 20S146W. WINDS 20 TO 30 KT
WITHIN 150 NM OF CENTER. ALSO WINDS NW TO W 20 TO 30 KT ELSEWHERE
WITHIN 150 NM N OF FRONTAL BOUNDARY E OF 138W. ASSOCIATED SEAS
INCLUDED BELOW.
.24 HOUR FORECAST LOW S OF FORECAST AREA. FRONT FROM 25S128W TO
23S132W TO 21S139W. WINDS NW TO N 20 TO 30 KT WITHIN 150 NM N OF
FRONTAL BOUNDARY. ASSOCIATED SEAS INCLUDED BELOW.
.48 HOUR FORECAST DISSIPATING FRONT FROM 25S124W TO 22S132W. TROUGH
FROM 21S137W TO 22S132W. WINDS NW 20 TO 25 KT WITHIN 150 NM E OF
FRONTAL BOUNDARY.
.TROUGH FROM 11S160E TO 11S167E TO 14S172E TO 17S175E TO 20S179W TO
20S171W. DEVELOPING LOW ALONG TROUGH NEAR 11S166E 1004 MB MOVING SE
SLOWLY. DISSIPATING LOW ALONG TROUGH NEAR 17S175E 1004 MB NEARLY
STATIONARY. WINDS W TO N 20 TO 30 KT WITHIN 360 NM N OF TROUGH
AXIS W OF 175E...AND ALSO WITHIN 180 NM N OF TROUGH AXIS E OF 175E.
NUMEROUS MODERATE TO STRONG TSTMS WITHIN 240 NM N OF TROUGH AXIS W
OF 175E. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 360 NM N OF TROUGH
AXIS.
.24 HOUR FORECAST LOW NEAR 15S170E 1004 MB. TROUGHS FROM LOW TO 20S178E
TO 20S171W AND FROM LOW TO 11S166E TO 11S160E. WINDS W TO N 20 TO
30 KT WITHIN 360 NM N OF TROUGH AXIS BETWEEN 166E AND 178E. WINDS
W TO NW 20 TO 25 KT ELSEWHERE WITHIN 180 NM N OF TROUGH AXIS. ASSOCIATED
SEAS INCLUDED BELOW.
.48 HOUR FORECAST LOW NEAR 14S170E 1003 MB. TROUGHS FROM LOW TO 20S178E
TO 20S171W AND FROM LOW TO 13S160E. WINDS W TO N 20 TO 30 KT WITHIN
360 NM N OF TROUGH AXIS BETWEEN 170E AND 171W. ASSOCIATED SEAS
INCLUDED BELOW.
.HIGH NEAR 14S160W 1012 MB. RIDGE FROM HIGH TO 10S174W TO 05N173E.
.24 HOUR FORECAST HIGH NEAR 17S166W 1010 MB. RIDGES FROM HIGH TO
09S177E AND FROM HIGH TO 14S160W.
.48 HOUR FORECAST HIGH NEAR 17S166W 1014 MB. RIDGES FROM HIGH TO
13S179E AND FROM HIGH TO 14S152W.
.RIDGE FROM 19S120W TO 14S135W.
.24 HOUR FORECAST RIDGE FROM 21S120W TO 15S140W.
.48 HOUR FORECAST DEVELOPING HIGH NEAR 21S120W 1015 MB. RIDGE FROM
HIGH TO 15S140W.
.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.
.OTHERWISE SEAS 8 TO 15 FT FROM 18S TO 25S BETWEEN 138W AND 120W.
.24 HOUR FORECAST SEAS 8 TO 12 FT FROM 16S TO 25S BETWEEN 138W AND
120W.
.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 22S TO 25S BETWEEN 133W AND
120W.
.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.
.48 HOUR FORECAST WINDS E TO NE 20 TO 25 KT FROM 00S TO 08S BETWEEN
172E AND 172W.
.FORECASTER BEDAL. HONOLULU HI.
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