437 
FZPN03 KNHC 131545
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC THU JUL 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC THU JUL 13.
24 HOUR FORECAST VALID 1200 UTC FRI JUL 14.
48 HOUR FORECAST VALID 1200 UTC SAT JUL 15.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE CALVIN NEAR 12.7N 117.1W 993 MB AT 1500 UTC JUL 13 
MOVING W OR 275 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 65 KT GUSTS
80 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM NW AND SE 
QUADRANTS...60 NM NE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT 
OR GREATER WITHIN 60 NM S SEMICIRCLE...135 NM NE QUADRANT AND 90 
NM NW QUADRANT WITH SEAS TO 20 FT. ELSEWHERE WITHIN 15N115W TO 
15N117W TO 14N119W TO 13N119W TO 11N117W TO 12N115W TO 15N115W 
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 
17N113W TO 18N116W TO 15N118W TO 11N118W TO 10N115W TO 12N113W TO
17N113W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE CALVIN NEAR 13.5N 122.1W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 110 NM NE QUADRANT...80 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NM NW QUADRANT...120 NM NE QUADRANT...AND 110 NM S SEMICIRCLE
WITH SEAS TO 30 FT. ELSEWHERE WITHIN 16N120W TO 16N124W TO 
14N125W TO 12N124W TO 12N121W TO 14N120W TO 16N120W WINDS 20 TO 
33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 15N117W TO 
19N119W TO 17N124W TO 13N125W TO 10N123W TO 11N119W TO 15N117W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE CALVIN NEAR 14.7N 127.8W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 70 NM S SEMICIRCLE...110 NM NE QUADRANT AND 90 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 N SEMICIRCLE AND 120 
NM S SEMICIRCLE WITH SEAS TO 33 FT. ELSEWHERE WITHIN 16N125W TO 
18N127W TO 18N129W TO 17N131W TO 14N130W TO 13N126W TO 16N125W 
WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 
17N122W TO 21N128W TO 18N131W TO 14N132W TO 10N127W TO 12N124W TO
17N122W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.72 HOUR FORECAST HURRICANE CALVIN NEAR 16.0N 133.9W. MAXIMUM 
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM CALVIN NEAR 17.0N 140.4W. 
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
.120 HOUR FORECAST TROPICAL STORM CALVIN NEAR 17.9N 147.6W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 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 10N137W TO 13N139W TO 14N140W TO 06N140W TO 07N138W TO
10N137W WINDS 20 KT OR LESS. SEAS 8 FT IN E TO SE SWELL.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

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

CONVECTION VALID AT 1530 UTC THU JUL 13...

.HURCN CALVIN...NUMEROUS MODERATE TO STRONG FROM 09N TO 16N
BETWEEN 112W AND 120W. 

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 08N78W TO LOW PRES NEAR 08N81W 1007 
MB TO 09N95W TO 10N109W. ITCZ EXTENDS FROM 11N128W TO BEYOND 
07N140W. SCATTERED MODERATE ISOLATED STRONG FROM 06N TO 14N AND 
E OF 109W. SCATTERED MODERATE FROM 06N TO 13N BETWEEN 127W AND 
140W. 

$$
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.