000 FZNT02 KNHC 210920 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1030 UTC SAT AUG 21 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF MEXICO SYNOPSIS VALID 0600 UTC SAT AUG 21. 24 HOUR FORECAST VALID 0600 UTC SUN AUG 22. 48 HOUR FORECAST VALID 0600 UTC MON AUG 23. .WARNINGS. ...GULF OF MEXICO HURRICANE WARNING... .HURRICANE GRACE INLAND NEAR 20.5N 97.8W 970 MB AT 0900 UTC AUG 21 MOVING W OR 260 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 95 KT GUSTS 115 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE QUADRANT...90 NM SE QUADRANT...50 NM SW QUADRANT...AND 80 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 0 NM W SEMICIRCLE...210 NM NE QUADRANT AND 105 NM SE QUADRANT WITH SEAS TO 30 FT. ELSEWHERE WITHIN 19N93W TO 19N96W TO 23N98W TO 24N94W TO 23N91W TO 19N93W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 24N95W TO 19N93W TO 22N98W TO 27N97W TO 25N93W TO 24N95W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED NE AND SE SWELL. .12 HOUR FORECAST TROPICAL STORM GRACE INLAND NEAR 20.2N 99.6W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. OVER FORECAST WATERS WITHIN 20N94W TO 20N95W TO 21N97W TO 22N97W TO 22N94W TO 20N94W E TO SE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE WITHIN 20N94W TO 21N97W TO 24N98W TO 26N96W TO 25N95W TO 20N94W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN SE SWELL. .24 HOUR FORECAST TROPICAL DEPRESSION GRACE WELL INLAND NEAR 20.1N 101.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .36 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. .ATLC TROPICAL STORM HENRI N OF AREA NEAR 33.1N 73.2W 996 MB AT 0900 UTC AUG 21 MOVING NNE OR 015 DEG AT 10 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS N OF AREA. SEAS 12 FT OR GREATER OVER FORECAST WATERS WITHIN 120 NM SE QUADRANT...AND 60 NM SW QUADRANT WITH SEAS TO 13 FT S OF 31N. ELSEWHERE OVER FORECAST WATERS WITHIN 30N70W TO 30N71W TO 30N73W TO 31N75W TO 31N69W TO 30N70W S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA WITHIN 30N74W TO 30N76W TO 31N79W TO 31N78W TO 31N75W TO 30N74W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. .12 HOUR FORECAST HURRICANE HENRI WELL N OF AREA NEAR 35.6N 72.3W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS WELL N OF 31N. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .ATLC 18 HOUR FORECAST WITHIN 20N71W TO 20N72W TO 20N73W TO 21N72W TO 21N71W TO 20N71W...INCLUDING THE WINDWARD PASSAGE... E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST LITTLE CHANGE. .48 HOUR FORECAST LITTLE CHANGE. .CARIBBEAN 30 HOUR FORECAST WITHIN 17N72W TO 17N73W TO 18N73W TO 18N72W TO 18N71W TO 17N72W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 HOUR FORECAST WITHIN 16N71W TO 16N72W TO 16N74W TO 18N72W TO 18N71W TO 16N71W NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .GULF OF MEXICO 18 HOUR FORECAST WITHIN 20N91W TO 19N92W TO 20N92W TO 22N91W TO 22N90W TO 20N91W...INCLUDING WITHIN 60 NM OF CAMPECHE...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.