524
FZPN03 KNHC 270900
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC FRI SEP 27 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

THE NATIONAL WEATHER SERVICE IS ACCEPTING PUBLIC COMMENTS UNTIL
OCTOBER 16 2024 ON A PROPOSAL TO REPLACE FEET WITH METERS WHEN
DESCRIBING SEAS IN A VARIETY OF NATIONAL MARINE CENTER TEXT AND
GRAPHICAL PRODUCTS FOR THE HIGH SEAS AREAS ONLY.
TO LEARN MORE PLEASE VISIT (WEB ADDRESS LOWERCASE)
HTTPS://OCEAN.WEATHER.GOV/PROPOSED-METERS.PHP

SECURITE

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

SYNOPSIS VALID 0600 UTC FRI SEP 27.
24 HOUR FORECAST VALID 0600 UTC SAT SEP 28.
48 HOUR FORECAST VALID 0600 UTC SUN SEP 29.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM JOHN NEAR 17.8N 102.9W 988 MB AT 0900 UTC SEP 27
MOVING NW OR 320 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N
SEMICIRCLE...140 NM SE QUADRANT AND 60 NM SW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 45 NM NE QUADRANT...330 NM SE
QUADRANT...300 NM SW QUADRANT...AND 75 NM NW QUADRANT WITH SEAS
TO 18 FT. ELSEWHERE WITHIN 17N99W TO 19N104W TO 18N107W TO 12N111W
TO 10N110W TO 12N100W TO 17N99W WINDS 20 TO 33 KT. SEAS 10 TO 12
FT. REMAINDER AREA WITHIN 15N94W TO 19N105W TO 18N108W TO
11N114W TO 10N108W TO 10N101W TO 15N94W WINDS 20 KT OR LESS.
SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL DEPRESSION JOHN NEAR 19.3N 104.8W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST WATERS
WITHIN 20N106W TO 18N106W TO 19N104W TO 20N106W WINDS 20 TO 30
KT. SEAS 8 TO 10 FT. ELSEWHERE WITHIN 15N94W TO 17N106W TO
26N114W TO 24N116W TO 14N111W TO 09N104W TO 15N94W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.36 HOUR FORECAST POST-TROPICAL JOHN NEAR 19.6N 106.2W. MAXIMUM
SUSTAINED WINDS 25 KT GUSTS 35 KT.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW JOHN NEAR 20.3N
107.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 21N108W
TO 21N106W TO 20N106W TO 20N108W TO 21N108W WINDS 20 TO 25 KT.
SEAS TO 8 FT. WITHIN 13N99W TO 13N105W TO 11N111W TO 09N113W TO
08N111W TO 09N104W TO 13N99W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN MIXED SWELL.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.42 HOUR FORECAST WITHIN 30N125.5W TO 30N129.5W TO 29.5N129.5W
TO 29.5N128W TO 29.5N126W TO 30N125.5W WINDS 20 KT OR LESS. SEAS
8 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 30N124W TO 30N130W TO 29N129W TO
29N128W TO 29N126W TO 30N124W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN NW SWELL.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

CONVECTION VALID AT 0900 UTC FRI SEP 27...

.TROPICAL STORM JOHN...SCATTERED TO NUMEROUS MODERATE TO
STRONG FROM 14N TO 19N BETWEEN 98W AND 106W. SCATTERED MODERATE
ELSEWHERE FROM 10N TO 20N BETWEEN 97W AND 110W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 17N109W TO 11N140W. SCATTERED MODERATE
FROM 08N TO 14N BETWEEN 110W AND 140W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.