000
FZPN03 KNHC 100251
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC FRI SEP 10 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FRI SEP 10.
24 HOUR FORECAST VALID 0000 UTC SAT SEP 11.
48 HOUR FORECAST VALID 0000 UTC SUN SEP 12.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE OLAF NEAR 23.0N 109.6W 974 MB AT 0300 UTC SEP 10
MOVING NW OR 325 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 85 KT
GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM E
SEMICIRCLE...50 NM SW QUADRANT AND 60 NM NW QUADRANT.  SEAS 12
FT OR GREATER WITHIN 90 NM E SEMICIRCLE AND 60 NM W SEMICIRCLE
WITH SEAS TO 24 FT. ELSEWHERE WITHIN 21N108W TO 21N111W TO 
24N111W TO 24N110W TO 24N108W TO 21N108W WINDS 20 TO 33 KT. SEAS
10 TO 12 FT. REMAINDER AREA WITHIN 21N107W TO 20N110W TO 23N112W
TO 25N109W TO 24N107W TO 21N107W WINDS 20 KT OR LESS. SEAS 8 TO 
11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE OLAF OVER WATER NEAR 24.6N 112.3W. 
MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE 
WINDS WITHIN 50 NM NW AND SE QUADRANTS...60 NM NE QUADRANT AND 40
NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM OF 
CENTER...EXCEPT 30 NM NE QUADRANT WITH SEAS TO 15 FT. ELSEWHERE 
WITHIN 23N112W TO 24N113W TO 25N113W TO 26N112W TO 24N111W TO 
23N112W WINDS 20 TO 33 KT. SEAS 9 TO 12 FT. REMAINDER AREA WITHIN
22N110W TO 22N113W TO 22N114W TO 25N113W TO 24N111W TO 22N110W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.36 HOUR FORECAST TROPICAL STORM OLAF NEAR 24.8N 113.6W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT.
.48 HOUR FORECAST TROPICAL STORM OLAF NEAR 24.4N 114.8W. MAXIMUM
SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS 
WITHIN 40 NM N SEMICIRCLE...30 NM SE QUADRANT AND 0 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM N SEMICIRCLE AND 30 
NM S SEMICIRCLE WITH SEAS TO 14 FT. ELSEWHERE WITHIN 24N114W TO 
23N115W TO 24N116W TO 25N115W TO 25N114W TO 24N114W WINDS 20 TO 
33 KT. SEAS 9 TO 12 FT. REMAINDER AREA WITHIN 23N114W TO 22N116W 
TO 24N117W TO 25N116W TO 25N114W TO 23N114W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED SWELL.
.60 HOUR FORECAST POST-TROPICAL OLAF NEAR 23.7N 115.9W. MAXIMUM 
SUSTAINED WINDS 35 KT GUSTS 45 KT.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW OLAF NEAR 23.0N 
117.2W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW OLAF NEAR 21.6N 
120.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW OLAF NEAR 21.0N 
122.0W. 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 03.4S91W TO 03.4S120W TO 01S120W TO 01S103W TO 02S92W TO
03.4S91W WINDS 20 KT OR LESS. SEAS 8 FT IN SW SWELL.
.24 HOUR FORECAST WITHIN 03.4S95W TO 03.4S120W TO 00N122W TO
08N114W TO 09N96W TO 03.4S95W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN SW SWELL.
.48 HOUR FORECAST WITHIN 03N95W TO 03S89W TO 03.4S120W TO
10N113W TO 11N93W TO 03N95W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT
IN SW SWELL.

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

CONVECTION VALID AT 0250 UTC FRI SEP 10...

.HURRICANE OLAF...NUMEROUS MODERATE SCATTERED STRONG WITHIN 45 
NM OF THE CENTER. SCATTERED MODERATE ISOLATED STRONG ELSEWHERE 
FROM 21N TO 25W BETWEEN 106W AND 111W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N86W TO 11N93W TO 08N122W TO 09N130W. 
SCATTERED MODERATE ISOLATED STRONG FROM 07N TO 14N BETWEEN 84W 
AND 101W. SCATTERED MODERATE FROM 08N TO 12N BETWEEN 101W AND 
112W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.