WEATHER BULLETIN AND SEA ZONE X VLD 191200 TO 201200 UTC. PART I: SEVERE WEATHER WARNING. CENTRAL EAST AREA (LAT 30 TO 45 S AND LONG 78 TO 95 WEST): WIND W/SW 10/15KT INCR TO S OF AREA W/SW 25/35KT GUSTS 45 KT, SEA 5.0/8.0M, VIS GOOD BECMG TO POOR, RN TO S OF AREA. CENTRAL WEST AREA (LAT 30 TO 45 S AND LONG 95 TO 120 WEST): WIND W/NW 10/15KT INCR TO W OF AREA 25/35KT GUSTS 45KT, SEA 2.5/4.0M, VIS GOOD BECMG TO POOR, RN TO W OF AREA. SEAST AREA (LAT 45 TO 60 S AND LONG 81 TO 95 WEST): WIND W/SW 30/40KT GUSTS 50KT, SEA 4.0/6.0M, VIS POOR, RN. SWEST AREA (LAT 45 TO 60 S AND LONG 95 TO 120 WEST): WIND N/NE 25/35KT GUSTS 45KT, SEA 2.5/4.0M, VIS POOR, RN. PART II: SYNOPTIC SITUATION (ANALYSIS 190600 UTC). HIGH 1020 HPA 37S/78W LOW 980 HPA 53S/110W PART III: FCST. NORTHEAST AREA (LAT 18 TO 30 S AND LONG 76 TO 95 WEST): WIND E/SE 10/15KT OCNL 20KT, SEA 1.5/2.5M, VIS GOOD. NORTHWEST AREA (LAT 18 TO 30 S AND LONG 95 TO 120 WEST): WIND S/SE 10/15KT, SEA 1.0/2.5M, VIS GOOD. MET104SM