199 
FZPN03 KNHC 090330
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC THU SEP 09 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0000 UTC THU SEP 09.
24 HOUR FORECAST VALID 0000 UTC FRI SEP 10.
48 HOUR FORECAST VALID 0000 UTC SAT SEP 11.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM OLAF NEAR 20.0N 108.0W 1000 MB AT 0300 UTC SEP
09 MOVING NNW OR 335 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N SEMICIRCLE
...30 NM SE QUADRANT AND 0 NM SW QUADRANT. SEAS 12 FT OR GREATER
WITHIN 60 NM N SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW 
QUADRANT WITH SEAS TO 15 FT. ELSEWHERE WITHIN 18N107W TO 18N09W 
TO 20N111W TO 22N109W TO 20N106W TO 18N107W...INCLUDING NEAR 
CABO CORRIENTES...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT.
.24 HOUR FORECAST TROPICAL STORM OLAF NEAR 21.9N 109.9W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS 
WITHIN 80 NM NE QUADRANT...70 NM SE QUADRANT...50 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60
NM OF CENTER...EXCEPT 90 NE QUADRANT WITH SEAS TO 23 FT. 
ELSEWHERE WITHIN 19N110W TO 20N112W TO 23N113W TO 24N108W TO 
23N107W TO 19N110W...INCLUDING GULF OF CALIFORNIA AND NEAR CABO 
CORRIENTES...WINDS 20 TO 33 KT. SEAS 10 TO 16 FT.
.48 HOUR FORECAST TROPICAL STORM OLAF NEAR 23.4N 113.0W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS 
WITHIN 50 NM NW AND SE QUADRANTS...60 NM NE QUADRANT AND 40 NM SW
QUADRANT. LITTLE CHANGE IN RADIUS OF SEAS 12 FT OR GREATER WITH 
SEAS TO 20 FT. ELSEWHERE WITHIN 23N112W TO 23N113W TO 24N114W TO 
24N113W TO 24N112W TO 23N112W WINDS 20 TO 33 KT. SEAS 10 TO 16 
FT. REMAINDER OF AREA WITHIN 21N113W TO 22N116W TO 24N117W TO 
26N114W TO 24N111W TO 21N113W WINDS 20 KT OR LESS. SEAS 8 TO 10 
FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM OLAF NEAR 23.3N 115.7W. MAXIMUM
SUSTAINED WINDS 35 KT GUSTS 45 KT. EXTENDED OUTLOOK...USE FOR 
GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW OLAF NEAR 22.6N 
118.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW OLAF NEAR 21.7N 
121.3W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.

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.

.WITHIN 03.4S88W TO 03.4S120W TO 00N120W TO 01N101W TO 00N95W TO
03.4S88W WINDS 20 KT OR LESS. SEAS TO 8 FT IN S TO SW SWELL.
.24 HOUR FORECAST WITHIN 03.4S88W TO 03.4S120W TO 00N123W TO 
01N102W TO 03.4S88W WINDS 20 KT OR LESS. SEAS 8 FT IN SE TO S 
SWELL.
.48 HOUR FORECAST WITHIN 03S94W TO 03.4S120W TO 09N124W TO 
12N112W TO 08N98W TO 03S94W WINDS 20 KT OR LESS. SEAS 8 FT IN S 
TO SW SWELL.

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

CONVECTION VALID AT 0315 UTC THU SEP 09...

.TROPICAL STORM OLAF...NUMEROUS MODERATE TO STRONG WITHIN 150 NM
NE QUADRANT. SCATTERED MODERATE ISOLATED STRONG WITHIN 90 NM SW 
QUADRANT AND WITHIN AN OUTER RAINBAND WITHIN 30 NM OF A LINE 
FROM 18N105W TO 19N106W TO 21N107W. SCATTERED MODERATE WITHIN 
120 NM SE QUADRANT.

.SCATTERED MODERATE ISOLATED STRONG FROM 11N TO 13N BETWEEN 87W
AND 89W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N86W TO 11N97W TO 12N110W TO 
09N125W. IT RESUMES AT 16N128W TO LOW PRES NEAR 16N136W AND TO
15N140W. SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 10N
BETWEEN 86W AND 90W. SCATTERED MODERATE WITHIN 60 NM S OF TROUGH
BETWEEN 84W AND 95W AND WITHIN 30 NM OF TROUGH BETWEEN 95W AND 
97W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.