939 FZPN03 KNHC 282152 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC FRI SEP 28 2018 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC FRI SEP 28. 24 HOUR FORECAST VALID 1800 UTC SAT SEP 29. 48 HOUR FORECAST VALID 1800 UTC SUN SEP 30. .WARNINGS. ...HURRICANE WARNING... .HURRICANE ROSA NEAR 17.7N 117.8W 955 MB AT 2100 UTC SEP 28 MOVING NW OR 325 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 105 KT GUSTS 130 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM N SEMICIRCLE...160 NM SE QUADRANT AND 80 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM N SEMICIRCLE AND 180 NM S SEMICIRCLE WITH SEAS TO 38 FT. ELSEWHERE WITHIN 270 NM OF CENTER WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA FROM 10N TO 23N BETWEEN 110W AND 125W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .24 HOUR FORECAST HURRICANE ROSA NEAR 20.3N 118.8W. MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE QUADRANT...150 NM SE QUADRANT...80 NM SW QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM NE AND 270 NM SW SEMICIRCLES WITH SEAS TO 41 FT. ELSEWHERE WITHIN 330 NM OF CENTER WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA BOUNDED BY 27N115W TO 15N110W TO 08N130W TO 22N130W TO 27N115W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .48 HOUR FORECAST HURRICANE ROSA NEAR 24.0N 118.4W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE QUADRANT...140 NM SE QUADRANT...80 NM SW QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM NE AND 300 NM SW SEMICIRCLES WITH SEAS TO 37 FT. ELSEWHERE WITHIN 330 NM OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA OVER FORECAST WATERS N OF 12N BETWEEN 110W AND 127W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .72 HOUR FORECAST TROPICAL STORM ROSA NEAR 27.7N 116.8W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 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. ...GALE WARNING... .LOW PRES NEAR 11N98W 1005 MB. FROM 12N TO 13N BETWEEN 96W AND 98W E WINDS 30 TO 35 KT. SEAS TO 12 FT. ELSEWHERE WITHIN 180 NM N QUADRANT WINDS 30 TO 35 KT. SEAS 9 TO 11 FT. REMAINDER OF AREA WITHIN 180 NM N SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. .24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 12N100W 1004 MB. FROM 13N TO 15N BETWEEN 99W AND 101W E WINDS 30 TO 35 KT. SEAS TO 13 FT. ELSEWHERE WITHIN 210 NM NE SEMICIRCLE WINDS 20 TO 30 KT. SEAS 9 TO 12 FT. REMAINDER OF AREA WITHIN 240 NM N SEMICIRCLE AND SE QUADRANT WINDS 20 KT OR LESS. SEAS TO 9 FT IN MIXED SWELL. .48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...FROM 13N TO 15N BETWEEN 102W AND 104W E WINDS 30 TO 40 KT. SEAS 12 TO 15 FT. ELSEWHERE WITHIN 210 NM N SEMICIRCLE WINDS 20 TO 30 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 270 NM OF CENTER WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .SYNOPSIS AND FORECAST. .36 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 LITTLE CHANGE. .ENTIRE AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 2100 UTC FRI SEP 28... HURRICANE ROSA...SCATTERED MODERATE TO ISOLATED STRONG WITHIN 150 NM OF THE CENTER. .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A SEGMENT OF THE MONSOON TROUGH EXTENDS FROM 08N78W TO 1005 MB LOW PRESSURE NEAR 11N98W. ANOTHER SEGMENT REACHES FORM 13N122W TO 08N137W. SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS WITHIN 120 NM OF THE LOW PRESSURE NEAR 11N98W. SCATTERED MODERATE CONVECTION IS ACTIVE WITHIN 30 NM OF THE MONSOON TROUGH BETWEEN 122W AND 130W. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.