WEATHER BULLETIN AND SEA STATE ZONE X VALID 171200 TO 181200 UTC. PART I: SEVERE WEATHER WARNING. CENTRAL EAST AREA (LAT 30 TO 45 SOUTH AND LONG 78 TO 95 WEST): WIND N/NW 25/35 KT GUST 45/50 KT SHIFTING EAST OF AREA TO E/SE 10/15 KT, SEA STATE 2.0/4.0M, VIS GOOD TO AVERAGE, SHOWERS/RAIN TO WEST OF AREA. CENTRAL WEST AREA (LAT 30 TO 45 SOUTH AND LONG 95 TO 120 WEST): WIND W/SW SHIFTING EAST OF AREA TO N/NW 25/35 KT OCCASIONAL 40 KT, SEA STATE 2.0/3.0M, VIS POOR TO AVERAGE, SHOWERS/RAIN. SOUTHWEST AREA (LAT 45 TO 60 SOUTH AND LONG 95 TO 120 WEST): WIND W/NW SHIFTING TO N/NW 25/35 KT GUST 45/50 KT, SEA STATE 4.0/7.0M, VIS POOR OCCASIONAL AVERAGE, RAIN/SHOWERS SLEET. SOUTHEAST AREA (LAT 45 TO 60 SOUTH AND LONG 81 TO 95 WEST): WIND W/NW 25/35 KT GUST 45/50 KT, SEA STATE 3.0/6.0M, VIS POOR OCCASIONAL AVERAGE, SHOWERS/RAIN. PART II: SYNOPTIC SITUATION (ANALYSIS 161800 UTC). HIGH 1026 HPA 35S/89W LOW 1014 HPA 32S/113W LOW 1010 HPA 46S/102W LOW 998 HPA 51S/117W LOW 982 HPA 57S/111W LOW 994 HPA 57S/95W PART III: FCST. NORTHEAST AREA (LAT 18 TO 30 SOUTH AND LONG 76 TO 95 WEST): WIND E/NE SHIFTING EAST OF AREA TO E/SE 15/25 KT, SEA STATE 2.0/3.0M, VIS GOOD. NORTHWEST AREA (LAT 18 TO 30 SOUTH AND LONG 95 TO 120 WEST): WIND W/SW SHIFTING EAST OF AREA TO W/NW 10/20 KT, SEA STATE 1.0/2.5M, VIS AVERAGE TO GOOD, SHOWERS. MET204JC