789 
FZPN03 KNHC 162116
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC SUN JUL 16 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC SUN JUL 16.
24 HOUR FORECAST VALID 1800 UTC MON JUL 17.
48 HOUR FORECAST VALID 1800 UTC TUE JUL 18.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM CALVIN NEAR 16.1N 136.3W 996 MB AT 2100 UTC JUL 
16 MOVING W OR 280 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 55 KT 
GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM N 
SEMICIRCLE...60 NM SE QUADRANT AND 50 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 90 NM S SEMICIRCLE...240 NM NE QUADRANT AND 
180 NM NW QUADRANT WITH SEAS TO 24 FT. ELSEWHERE WITHIN 180 NM N 
AND 90 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT FROM 
10N TO 22N W OF 130W. 
.24 HOUR FORECAST TROPICAL STORM CALVIN W OF AREA NEAR 17.1N 
142.3W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL 
STORM FORCE WINDS WITHIN 70 NM N SEMICIRCLE AND 30 NM S 
SEMICIRCLE. OVER FORECAST WATERS FROM 17N TO 21N W OF 138W E TO 
SE WINDS 20 TO 25 KT. SEAS 9 TO 12 FT IN MIXED SWELL. ELSEWHERE 
W OF A LINE FROM 22N140W TO 19N137W TO 14N140W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM CALVIN WELL W OF THE AREA NEAR 
18.1N 149.7W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. 
TROPICAL STORM FORCE WINDS WITHIN 20 NM S SEMICIRCLE...60 NM NE 
QUADRANT AND 50 NM NW QUADRANT. OVER FORECAST WATERS WINDS 20 KT 
OR LESS. SEAS LESS THAN 8 FT.
.72 HOUR FORECAST TROPICAL STORM CALVIN NEAR 19.2N 157.0W.
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 CALVIN NEAR 20.0N 
163.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.120 HOUR FORECAST...DISSIPATED.

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.

.FROM 10N TO 12N E OF 89W...INCLUDING THE GULF OF PAPAGAYO... 
NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. 
.24 HOUR FORECAST WITHIN 30 NM OF A LINE FROM 11N86W TO 
10N91W...INCLUDING THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 
KT. SEAS TO 8 FT.
.48 HOUR FORECAST FROM 10N TO 12N E OF 92W...INCLUDING THE GULF 
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS 8 FT W OF 90W. 

.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF 
TEHUANTEPEC N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST N OF 14N BETWEEN 94.5W AND 95.5W...INCLUDING 
THE GULF OF TEHUANTEPEC N WINDS 20 TO 25 KT. SEAS 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

CONVECTION VALID AT 2100 UTC SUN JUL 16...

.HURCN CALVIN...NUMEROUS MODERATE TO ISOLATED STRONG WITHIN 
60 NM NE SEMICIRCLE. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
THE MONSOON TROUGH EXTENDS FROM 10N84W TO 09N92W. THE ITCZ 
STRETCHES FROM 09N97W TO 07N120W TO BEYOND 07N140W. SCATTERED 
MODERATE TO ISOLATED STRONG CONVECTION IS NOTED FROM 05N TO 08N 
BETWEEN 83W AND 89W...FROM 04N TO 15N BETWEEN 95W AND 104W... 
AND 08N TO 11N BETWEEN 106W AND 125W.

$$
.FORECASTER GR. NATIONAL HURRICANE CENTER.