000
FZPN03 KNHC 090930
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU SEP 9 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC THU SEP 09.
24 HOUR FORECAST VALID 0600 UTC FRI SEP 10.
48 HOUR FORECAST VALID 0600 UTC SAT SEP 11.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM OLAF NEAR 20.5N 108.0W 993 MB AT 0900 UTC SEP 09
MOVING NNW OR 340 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 55 KT
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NW AND SE
QUADRANTS...100 NM NE QUADRANT AND 40 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 60 NM N SEMICIRCLE...75 NM SE QUADRANT AND 0 
NM SW QUADRANT WITH SEAS TO 20 FT. ELSEWHERE WITHIN 20N107W TO 
20N108W TO 21N108W TO 21N107W TO 20N107W...INCLUDING NEAR CABO 
CORRIENTES...WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF 
AREA WITHIN 19N106W TO 18N108W TO 19N111W TO 21N110W TO 22N108W 
TO 19N106W...INCLUDING NEAR CABO CORRIENTES...WINDS 20 KT OR 
LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.12 HOUR FORECAST HURRICANE OLAF NEAR 21.4N 108.6W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS 
WITHIN 90 NM NE QUADRANT...80 NM SE QUADRANT...40 NM SW QUADRANT 
AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM E 
SEMICIRCLE...30 NM SW QUADRANT AND 60 NM NW QUADRANT WITH SEAS TO
24 FT. ELSEWHERE LITTLE CHANGE.
.24 HOUR FORECAST HURRICANE OLAF NEAR 22.6N 110.0W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM NE QUADRANT...60 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. LITTLE CHANGE IN RADII OF SEAS 
12 FT OR GREATER WITH SEAS TO 25 FT. ELSEWHERE WITHIN 22N109W TO 
22N110W TO 23N111W TO 23N109W TO 22N109W WINDS 20 TO 33 KT. SEAS 
10 TO 16 FT. REMAINDER OF AREA WITHIN 2N108W TO 20N110W TO 
20N113W TO 22N113W TO 24N109W TO 22N108W...INCLUDING GULF OF 
CALIFORNIA...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM OLAF NEAR 23.7N 113.2W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS 
WITHIN 40 NM NW AND SE QUADRANTS...50 NM NE QUADRANT AND 30 NM SW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM OF CENTER WITH SEAS
TO 18 FT. ELSEWHERE WITHIN 23N113W TO 23N114W TO 24N113W TO 
23N113W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA 
WITHIN 21N112W TO 24N117W TO 26N114W TO 25N112W TO 21N112W WINDS 
20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL OLAF NEAR 23.1N 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 22.1N 
118.5W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW OLAF NEAR 21.3N 
121.7W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 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 00N94W TO 03S83W TO 03.4S120W TO 08N113W TO 09N95W TO 
00N94W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 03S95W TO 03.4S120W TO 04N128W TO 
11N111W TO 11N91W TO 03S95W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN S TO SW SWELL.

.42 HOUR FORECAST WITHIN 15N95W TO 15N96W TO 16N95W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 915 UTC THU SEP 09...

.TROPICAL STORM OLAF...NUMEROUS MODERATE TO STRONG WITHIN 180 NM
NE QUADRANT. SCATTERED MODERATE TO STRONG WITHIN 180 NM NW
QUADRANT. SCATTERED MODERATE TO ISOLATED STRONG WITHIN 120 NM
S SEMICIRCLE. SCATTERED MODERATE WITHIN 60 NM OF 20N105W.

.TROPICAL WAVE ALONG 97W FROM 04N TO 16N...SCATTERED MODERATE 
TO STRONG WITHIN 120 NM E OF WAVE FROM 12N TO 15N.

.SCATTERED MODERATE ISOLATED STRONG WITHIN 60 NM OF 15N95W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM 11N86W TO 11N96W TO 10N105W TO 
11N113W TO 08N125W. IT RESUMES AT 16N133W TO LOW PRES NEAR 
15N136W 1012 MB AND TO 15N140W. SCATTERED MODERATE TO STRONG 
WITHIN 180 NM N OF THE TROUGH BETWEEN 87W AND 91W. SCATTERED
MODERATE ISOLATED STRONG WITHIN 180 NM S OF TROUGH BETWEEN 98W
AND 100W. SCATTERED MODERATE WITHIN 180 NM S OF TROUGH BETWEEN
86W AND 87W...BETWEEN 100W AND 104W...AND WITHIN 120 NM S OF 
TROUGH BETWEEN 106W AND 109W.

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.