000
FZPN03 KNHC 171017
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC MON JUL 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC MON JUL 17.
24 HOUR FORECAST VALID 0600 UTC TUE JUL 18.
48 HOUR FORECAST VALID 0600 UTC WED JUL 19.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM CALVIN NEAR 16.7N 139.7W 1000 MB AT 0900 UTC JUL
17 MOVING W OR 280 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE
QUADRANT...60 NM SE QUADRANT...50 NM SW QUADRANT...AND 70 NM NW
QUADRANT.  SEAS 12 FT OR GREATER WITHIN 90 NM S SEMICIRCLE...210
NM NE QUADRANT AND 180 NM NW QUADRANT WITH SEAS TO 23 FT.
ELSEWHERE WITHIN 19N137W TO 19N139W TO 19N140W TO 16N140W TO 
16N138W TO 17N137W TO 19N137W E TO SE WINDS 20 TO 33 KT. SEAS 10
TO 12 FT. REMAINDER OF AREA WITHIN 21N135W TO 23N137W TO 22N140W
TO 12N140W TO 12N138W TO 18N133W TO 21N135W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM CALVIN NEAR 17.4N 145.9W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM NE QUADRANT...30 NM SE QUADRANT...20 NM SW 
QUADRANT...AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WEST OF 
140W. EAST OF 140W...WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST TROPICAL STORM CALVIN NEAR 18.2N 153.4W. 
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM N SEMICIRCLE AND 10 NM S SEMICIRCLE. SEAS 12 
FT OR GREATER EAST OF 140W. EAST OF 140W...WINDS 20 KT OR LESS. 
SEAS LESS THAN 8 FT.
.60 HOUR FORECAST TROPICAL DEPRESSION CALVIN NEAR 18.8N 156.9W. 
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT.
.72 HOUR FORECAST TROPICAL DEPRESSION CALVIN NEAR 19.5N 160.3W. 
MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 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.

.WITHIN 12N86W TO 12N88W TO 13N90W TO 11N91W TO 10N88W TO 10N86W
TO 12N86W...INCLUDING THE GULF OF PAPAGAYO...E WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WITHIN 11N86W TO 13N89W TO 12N94W TO 10N94W TO
10N91W TO 10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.WITHIN 16N93W TO 16N95W TO 16N96W TO 15N97W TO 13N96W TO 13N94W
TO 16N93W...INCLUDING THE GULF OF TEHUANTEPEC...E WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.42 HOUR FORECAST WITHIN 12N107W TO 13N108W TO 13N110W TO
11N109W TO 11N108W TO 11N107W TO 12N107W E TO SE 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 0900 UTC MON JUL 17...

TROPICAL STORM CALVIN...SCATTERED MODERATE WITHIN 60 NM IN A 
NORTHERN SEMICIRCLE FROM THE CENTER.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS EXTENDS FROM NORTHERN COSTA RICA THROUGH 
09N105W TO 05N124W. SCATTERED MODERATE FROM 02N TO 10N BETWEEN 
THE COLOMBIA COSTA RICA COAST AND 93W...AND FROM 05N TO 13N 
BETWEEN 103W AND 114W. ITCZ AXIS EXTENDS FROM 05N124W THROUGH 
04N130W TO BEYOND 04N140W. SCATTERED MODERATE FROM 04N TO 09N 
BETWEEN 121W AND 128W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.