850 

FZPN03 KNHC 170220
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC FRI APR 17 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0000 UTC FRI APR 17.
24 HOUR FORECAST VALID 0000 UTC SAT APR 18.
48 HOUR FORECAST VALID 0000 UTC SUN APR 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.WITHIN 31N113W TO 32N115W TO 30N115W TO 29N113W TO 29N112W TO
31N113W...INCLUDING THE GULF OF CALIFORNIA... S TO SW WINDS 20
TO 25 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.WITHIN 23N108W TO 23N109W TO 23N111W TO 21N110W TO 21N109W TO
22N108W TO 23N108W W TO NW WINDS 20 TO 25 KT. SEAS LESS THAN
2.5 M.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.06 HOUR FORECAST WITHIN 30N119W TO 30N127W TO 29N126W TO
28N122W TO 28N120W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N SWELL.
.24 HOUR FORECAST WITHIN 30N119W TO 30N127W TO 29N126W TO
28N122W TO 28N120W TO 30N119W WINDS 20 KT OR LESS. SEAS 2.5 TO
3.0 M IN N SWELL.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

CONVECTION VALID AT 0200 UTC FRI APR 17...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A SURFACE TROUGH EXTENDS FROM COASTAL COSTA RICA NEAR 09N83W TO
05N102W. THE ITCZ BEGINS AT 05N102W TO A 1008 MB LOW NEAR
04N110W, THEN BEYOND 06N140W. SCATTERED MODERATE AND ISOLATED
STRONG CONVECTION IS OCCURRING FROM 03N-07N BETWEEN 103W-123W.
ISOLATED MODERATE CONVECTION IS ALSO OCCURRING FROM 00N-05N
BETWEEN 90W-103W AND FROM 03N-10N BETWEEN 127W-135W. A SOUTHERN
HEMISPHERE ITCZ EXTENDS FROM 03S93W TO 03S140W. ISOLATED MODERATE
CONVECTION IS OBSERVED FROM 03S-07S BETWEEN 86W-89W.

$$
.FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.






381 

FZNT02 KNHC 170223
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC FRI APR 17 2026

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF AMERICA

SYNOPSIS VALID 0000 UTC FRI APR 17.
24 HOUR FORECAST VALID 0000 UTC SAT APR 18.
48 HOUR FORECAST VALID 0000 UTC SUN APR 19.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC WITHIN 11N45W TO 14N49W TO 15N58W TO 11N60W TO 06N57W TO
07N45W TO 11N45W...INCLUDING ATLANTIC EXPOSURES... WINDS 20 KT
OR LESS. SEAS 2.5 TO 3.0 M IN NE TO E SWELL.
.24 HOUR FORECAST WITHIN 16N35W TO 16N42W TO 13N55W TO 08N56W TO
07N35W TO 16N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN NE
SWELL.
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.ATLC WITHIN 26N35W TO 24N39W TO 15N41W TO 12N39W TO 15N35W TO
26N35W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN N SWELL.
.24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.






672 

FZPN40 PHFO 170255
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI APR 17 2026

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 180W

SYNOPSIS VALID 0000 UTC APR 17 2026.
24 HOUR FORECAST VALID 0000 UTC APR 18 2026.
48 HOUR FORECAST VALID 0000 UTC APR 19 2026.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N151W 27N154W THENCE TROUGH 23N160W MOVING NE 10 KT.
.24 HOUR FORECAST FRONT MOVED N OF AREA. TROUGH 30N149W 27N152W.
.48 HOUR FORECAST TROUGH

.48 HOUR FORECAST NEW TROUGH 26N169W 22N169W 18N169W. WINDS
20 TO 25 KT FROM 22N TO 30N BETWEEN 167W AND 157W.

.48 HOUR FORECAST NEW FRONT 30N177W 28N180W.

.WINDS 20 KT OR LESS OVER REMAINDER FORECAST AREA.

.SEAS 2.5 M OR LOWER OVER ENTIRE FORECAST AREA.

.ITCZ 04N180W 06N160W 06N140W. ISOLATED MODERATE TSTMS
WITHIN 150 NM OF ITCZ.

.SCATTERED MODERATE TSTMS FROM 05N TO 13N BETWEEN 180W AND
175W...AND WITHIN 90 NM OF POINT 19N170W.


$$

.FORECASTER PECHACEK. HONOLULU HI.