850 
FZPN03 KNHC 261604
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC SUN AUG 26 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC SUN AUG 26.
24 HOUR FORECAST VALID 1200 UTC MON AUG 27.
48 HOUR FORECAST VALID 1200 UTC TUE AUG 28.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM MIRIAM NEAR 13.2N 125.3W 1004 MB AT 1500 UTC AUG
26 MOVING W OR 275 DEG AT 11 KT. MAXIMUM SUSTAINED WINDS 40 KT
GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER
EXCEPT 0 NM SW QUADRANT. ELSEWHERE WITHIN 90 NM N AND 30 NM S
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST TROPICAL STORM MIRIAM NEAR 13.5N 129.4W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE 
WINDS WITHIN 60 NM N SEMICIRCLE...50 NM SE QUADRANT AND 30 NM SW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 45 NM OF CENTER WITH SEAS
TO 15 FT. ELSEWHERE WITHIN 90 NM OF CENTER WINDS 20 TO 33 KT.
SEAS 8 TO 11 FT. 
.48 HOUR FORECAST HURRICANE MIRIAM NEAR 13.5N 133.6W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 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 60 NM N AND 45 NM S
SEMICIRCLE WITH SEAS TO 18 FT. ELSEWHERE WITHIN 180 NM N AND 120
NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
.72 HOUR FORECAST HURRICANE MIRIAM NEAR 13.5N 137.6W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 KT. 
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE MIRIAM NEAR 14.9N 140.5W. MAXIMUM 
SUSTAINED WINDS 90 KT GUSTS 110 KT.
.120 HOUR FORECAST HURRICANE MIRIAM NEAR 18.5N 142.0W. MAXIMUM 
SUSTAINED WINDS 85 KT GUSTS 105 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.

.LOW PRES NEAR 11N105W 1009 MB. WINDS 20 KT OR LESS. SEAS LESS
THAN 8 FT. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
13N110W 1008 MB. WITHIN 180 NM NE QUADRANT WINDS 20 TO 25 KT.
SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...15N114W
1007 MB. WITHIN 180 NM NE QUADRANT WINDS 20 TO 25 KT. SEAS TO 9
FT.

.30 HOUR FORECAST N OF 15N BETWEEN 94W AND 96W...INCLUDING GULF
OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.36 FROM 11N TO 13N E OF 88W...INCLUDING GULF OF PAPAGAYO...NE 
TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. 
.48 HOUR FORECAST 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 1500 UTC SUN AUG 26...

TROPICAL STORM MIRIAM...NUMEROUS MODERATE TO STRONG WITHIN 90 NM
OF THE CENTER, AND WITHIN 30 NM OF A BAND WEST OF THE CENTER 
EXTENDING FROM 15N125W TO 13N126W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SEGMENT OF MONSOON TROUGH FROM 09N79W TO LOW PRESSURE NEAR 
11N105W TO 10N115W. ANOTHER SEGMENT OF MONSOON TROUGH FROM 
16N130W TO WEST OF 14N140W. SCATTERED MODERATE WITHIN 120 NM 
S OF THE MONSOON TROUGH AXIS BETWEEN 84W AND 87W...AND WITHIN 
150 NM N OF THE MONSOON TROUGH BETWEEN 92W AND 96W. NUMEROUS 
MODERATE TO ISOLATED STRONG FROM 12N TO 16N BETWEEN 103W AND 
107W.

$$
.FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.