019 
FZPN03 KNHC 190306
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC SUN AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0000 UTC SUN AUG 19.
24 HOUR FORECAST VALID 0000 UTC MON AUG 20.
48 HOUR FORECAST VALID 0000 UTC TUE AUG 21.

.WARNINGS.

...TROPICAL STORM WARNING...
.HURRICANE LANE NEAR 12.8N 141.0W 952 MB AT 0300 UTC AUG 19 
MOVING W OR 280 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 115 KT 
GUSTS 140 KT. TROPICAL STORM FORCE WINDS OVER FORECAST WATERS 
WITHIN 90 NM NE QUADRANT...70 NM SE QUADRANT...40 NM SW 
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
240 NM NE QUADRANT...180 NM SE QUADRANT...120 NM SW 
QUADRANT...AND 150 NM NW QUADRANT WITH SEAS TO 43 FT. ELSEWHERE 
OVER FORECAST WATERS WITHIN 180 NM N AND 120 NM S SEMICIRCLES 
WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. REMAINDER OF AREA W OF LINE 
FROM 20N137W TO 17N133W TO 09N138W WINDS 20 KT OR LESS. SEAS 8 
TO 12 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE LANE WEST OF AREA NEAR 13.5N 145.2W. 
MAXIMUM SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM 
FORCE WINDS WITHIN 110 NM NE QUADRANT...100 NM SE QUADRANT...60 
NM SW QUADRANT...AND 90 NM NW QUADRANT. TROPICAL STORM FORCE 
WINDS AND 12 FOOT SEAS W OF AREA. OVER FORECAST WATERS W OF LINE 
FROM 21N140W TO 19N137W TO 14N140W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED SWELL.
.48 HOUR FORECAST HURRICANE LANE WEST OF AREA NEAR 13.9N 148.9W. 
MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT. LITTLE CHANGE IN 
RADIUS OF TROPICAL STORM FORCE WINDS. OVER FORECAST WATERS WINDS 
20 KT OR LESS. SEAS LESS THAN 8 FT.
.72 HOUR FORECAST HURRICANE LANE NEAR 14.2N 152.2W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST HURRICANE LANE NEAR 15.0N 155.7W. MAXIMUM 
SUSTAINED WINDS 65 KT GUSTS 80 KT.
.120 HOUR FORECAST TROPICAL STORM LANE NEAR 16.2N 159.2W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 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.

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

CONVECTION VALID AT 0215 UTC SUN AUG 19...

.HURRICANE LANE...NUMEROUS MODERATE SCATTERED STRONG OVER 
FORECAST WATERS WITHIN 60 NM OF CENTER. SCATTERED MODERATE 
ISOLATED STRONG ELSEWHERE FROM 10N TO 16N W OF 137W.

.TROPICAL WAVE FROM 08N81W TO 20N81W...SCATTERED MODERATE 
ISOLATED STRONG FROM 03N TO 10N BETWEEN 80W AND 86W.

.TROPICAL WAVE FROM 06N106W TO 16N106W...SCATTERED MODERATE 
ISOLATED STRONG FROM 06N TO 08N BETWEEN 103W AND 110W AND FROM 
14N TO 19N BETWEEN 102W AND 108W.

.LOW PRES 1009 MB NEAR 13N117W...SCATTERED MODERATE ISOLATED 
STRONG FROM 13N TO 17N BETWEEN 114W AND 120W.

.TROPICAL WAVE FROM 07N121W TO 17N120W...SCATTERED 
MODERATE ISOLATED STRONG FROM 11N TO 17N BETWEEN 120W AND 123W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N75W TO 10N107W TO LOW PRES 1009 MB NEAR 
13N117W TO 09N122W. ITCZ CONTINUES FROM 09N122W TO 09N130W TO 
11N136W. SCATTERED MODERATE ISOLATED STRONG FROM 11N TO 14N 
BETWEEN 95W AND 103W. 

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.