High Seas Forecast
Issued by NWS

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000
FZPN03 KNHC 240933
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SUN SEP 24 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SUN SEP 24.
24 HOUR FORECAST VALID 0600 UTC MON SEP 25.
48 HOUR FORECAST VALID 0600 UTC TUE SEP 26.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM PILAR NEAR 19.1N 105.6W 1002 MB AT 0900 UTC SEP
24 MOVING NNW OR 335 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S
SEMICIRCLE...50 NM NE QUADRANT AND 70 NM NW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 60 NM N SEMICIRCLE AND 45 NM S SEMICIRCLE WITH
SEAS TO 14 FT. ELSEWHERE WITHIN 90 NM NE AND 150 NM SW
SEMICIRCLES WINDS 20 TO 33 KT. SEAS TO 10 FT.
.24 HOUR FORECAST TROPICAL STORM PILAR NEAR 20.2N 105.9W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 60 NM NE QUADRANT...30 NM SE QUADRANT...0 NM SW
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
45 NM SW QUADRANT WITH SEAS TO 14 FT. ELSEWHERE WITHIN 90 NM E
AND 120 NM W SEMICIRCLES WINDS 20 TO 33 KT. SEAS TO 10 FT.
ELSEWHERE E OF LINE FROM FROM 18.5N109W TO 22N109W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL DEPRESSION PILAR NEAR 22.0N 106.0W.
MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 60 NM N
QUADRANT WINDS 20 TO 33 KT. SEAS TO 10 FT. ELSEWHERE WITHIN 120
NM OF CENTER WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED
SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW PILAR NEAR 24.0N
107.0W. 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.

.FROM 10N TO 13N BETWEEN 105W AND 110W SW TO W WINDS 20 TO 25
KT. SEAS 9 TO 10 FT. ELSEWHERE FROM 09N TO 14N BETWEEN 98W AND
116W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL.
.24 HOUR FORECAST FROM 09N TO 13N BETWEEN 101W AND 113W WINDS 20
KT OR LESS. SEAS TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST FROM 09N TO 11N BETWEEN 105W AND 108W WINDS 20
KT OR LESS. SEAS 8 FT IN MIXED SWELL.

.LOW PRES NEAR 14N127W 1010 MB. WITHIN 300 NM S QUADRANT OF LOW
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.24 HOUR FORECAST LOW PRES NEAR 14N126W 1008 MB. WITHIN 240 NM
OF CENTER WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST LOW PRES NEAR 14N123W 1008 MB. WITHIN 330 NM
SW AND 180 NM NE SEMICIRCLES OF LOW WINDS 20 TO 25 KT. SEAS 8 TO
10 FT.

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

CONVECTION VALID AT 0900 UTC SAT SEP 23...

.TROPICAL STORM PILAR...SCATTERED MODERATE ISOLATED STRONG
WITHIN 150 NM NW QUADRANT. SCATTERED MODERATE WITHIN 120 NM SE
QUADRANT.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

MONSOON TROUGH FROM 09N74W TO 11N90W TO 16N101W...THEN RESUMES
FROM NEAR 18N108W TO 12N118W TO LOW PRES 1010 MB NEAR 14N127W TO
12N135W TO BEYOND 12N140W. SCATTERED MODERATE ISOLATED STRONG
WITHIN 180 NM EITHER SIDE OF TROUGH AXIS BETWEEN 86W AND 100W.
SCATTERED MODERATE ALONG AND UP TO 120 NM SE OF TROUGH AXIS
BETWEEN 110W AND 117W.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.



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