000 FZPN03 KNHC 281619 HSFEP2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC FRI AUG 28 2020 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC FRI AUG 28. 24 HOUR FORECAST VALID 1200 UTC SAT AUG 29. 48 HOUR FORECAST VALID 1200 UTC SUN AUG 30. .WARNINGS. ...TROPICAL STORM WARNING... .TROPICAL STORM ISELLE NEAR 18.3N 115.3W 997 MB AT 1500 UTC AUG 28 MOVING NE OR 035 DEG AT 4 KT. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM S SEMICIRCLE...50 NM NE QUADRANT AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 90 NM E SEMICIRCLE...60 NM SW QUADRANT AND 30 NM NW QUADRANT WITH SEAS TO 20 FT. ELSEWHERE FROM 13N TO 18N BETWEEN 110W AND 118W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 12N TO 21N E OF 118W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN SW SWELL. .24 HOUR FORECAST TROPICAL STORM ISELLE NEAR 20.6N 114.6W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM S SEMICIRCLE...40 NM NE QUADRANT AND 30 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 60 NM IN THE E SEMICIRCLE WITH SEAS TO 14 FT. ELSEWHERE WITHIN 120 NM OF THE CENTER WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA FROM 14N TO 22N BETWEEN 108W AND 115W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN SW SWELL. .48 HOUR FORECAST TROPICAL DEPRESSION ISELLE NEAR 23.5N 115.7W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 90 NM OF CENTER WINDS 20 TO 30 KT. SEAS 8 TO 10 FT. .60 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 24.1N 116.6W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 30 KT. .72 HOUR FORECAST POST-TROPICAL REMNANT LOW ISELLE NEAR 24.4N 117.3W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 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. .TROPICAL DEPRESSION HERNAN NEAR 23.4N 109.1W 1006 MB AT 1500 UTC AUG 28 MOVING WNW OR 295 DEG AT 18 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS 12 FT OR GREATER WITHIN 60 NM N SEMICIRCLE...120 NM SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 12 FT. ELSEWHERE WITHIN 120 NM WINDS 2O TO 30 KT. SEAS 8 TO 10 FT. .12 HOUR FORECAST POST-TROPICAL REMNANT LOW HERNAN NEAR 24.1N 110.5W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. .24 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. .WITHIN 03.4S82W TO 03.4S85W TO 01S83W TO 01S83W TO 03S82W TO 03.4S82W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN S SWELL. .06 HOUR FORECAST CONDITIONS IMPROVE. .12 HOUR FORECAST WITHIN 27N111W TO 27N112W TO 30N115W TO 32N115W TO 31N114W TO 27N111W...INCLUDING GULF OF CALIFORNIA... SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST WITHIN 27N111W TO 27N112W TO 30N115W TO 32N115W TO 31N114W TO 27N111W...INCLUDING GULF OF CALIFORNIA... SE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .42 HOUR FORECAST CONDITIONS IMPROVE. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. CONVECTION VALID AT 1500 UTC FRI AUG 28... .TROPICAL STORM ISELLE...SCATTERED MODERATE AND ISOLATED STRONG CONVECTION IS PRESENT WITHIN 180 NM IN THE W SEMICIRCLE. .TROPICLA DEPRESSION HERNAN...SCATTERED MODERATE CONVECTION IS PRESENT WITHIN 120 NM OF THE CENTER .INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EMERGES OFF OF CENTRAL AMERICA NEAR 08N82W TO 16N97W. IT RESUMES AT 12N125W TO BEYOND 13N140W. SCATTERED MODERATE CONVECTION IS NOTED FROM 08N TO 13N WEST OF 135W AND FROM 06N TO 08N EAST OF 85W. $$ .FORECASTER LANDSEA. NATIONAL HURRICANE CENTER.