000 FKPZ21 KNHC 310837 TCAPZ1 TROPICAL STORM ALVIN ICAO ADVISORY NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL EP012025 0900 UTC SAT MAY 31 2025 TC ADVISORY DTG: 20250531/0900Z TCAC: KNHC TC: ALVIN ADVISORY NR: 2025/011 OBS PSN: 31/0900Z N2000 W10918 MOV: N 09KT INTST CHANGE: WKN C: 1005HPA MAX WIND: 035KT FCST PSN +3 HR: 31/1200Z N2022 W10921 FCST MAX WIND +3 HR: 035KT FCST PSN +6 HR: 31/1500Z N2044 W10926 FCST MAX WIND +6 HR: 030KT FCST PSN +9 HR: 31/1800Z N2106 W10930 FCST MAX WIND +9 HR: 030KT FCST PSN +15 HR: 01/0000Z N2142 W10930 FCST MAX WIND +15 HR: 030KT FCST PSN +21 HR: 01/0600Z N2218 W10930 FCST MAX WIND +21 HR: 025KT FCST PSN +27 HR: 01/1200Z N//// W///// FCST MAX WIND +27 HR: ///KT RMK: THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20250531/1500Z $$