Syowa 00Z 850hPa height 1968 - - 1163.7 1127.0 1167.1 1153.3 1069.8 1060.1 1044.5 1103.9 1154.0 1195.4 1969 1249.2 1197.6 1126.9 1158.9 1128.2 1218.6 1042.9 1034.1 1058.5 1147.9 1141.4 1182.5 1970 1162.8 1159.6 1138.8 1128.3 1098.6 1131.3 1099.7 1038.3 1114.4 1114.6 1158.9 1221.5 1971 1223.4 1154.4 1133.1 1143.8 1202.0 1084.4 1123.0 1081.4 1115.9 1079.0 1123.8 1215.7 1972 1221.1 1175.5 1165.5 1185.0 1144.9 1180.1 1116.2 1156.9 1099.0 1084.7 1093.1 1202.1 1973 1223.8 1168.0 1092.5 1112.2 1169.1 1154.6 1099.2 1058.3 1092.6 1100.2 1137.4 1139.5 1974 1210.8 1139.6 1132.2 1148.1 1167.5 1148.5 1119.3 1189.4 1064.0 1106.9 1188.8 1239.0 1975 1231.6 1182.7 1168.1 1102.5 1230.9 1166.2 1169.4 1081.9 1061.4 1081.8 1131.9 1224.2 1976 1229.9 1170.2 1148.6 1089.5 1081.9 1158.4 1102.5 1090.7 1050.2 1077.8 1212.1 1311.5 1977 1248.7 1193.9 1152.6 1163.1 1168.5 1182.7 1154.6 1155.9 1050.9 1076.4 1121.9 1188.2 1978 1164.4 1181.3 1169.4 1126.2 1146.9 1133.4 1162.4 1035.4 1088.8 1123.8 1159.7 1194.9 1979 1189.1 1171.0 1129.2 1142.6 1102.6 1103.7 1040.1 1063.2 1062.3 1124.9 1155.3 1243.6 1980 1195.6 1188.7 1186.5 1176.5 1153.6 1101.5 1154.3 1146.4 1133.2 1077.8 1180.9 1193.3 1981 1204.9 1158.0 1178.1 1175.4 1131.9 1123.9 1199.9 1182.9 1107.8 1075.9 1123.3 1124.9 1982 1224.3 1166.4 1081.8 1088.2 1117.1 1083.6 1114.8 1100.2 1047.9 1123.3 1193.3 1262.7 1983 1221.9 1203.8 1150.4 1134.2 1162.9 1128.2 1085.2 1074.5 1080.2 1079.6 1110.9 1166.3 1984 1227.5 1194.6 1126.3 1138.6 1182.2 1144.0 1122.4 1132.9 1087.7 1079.9 1156.0 1255.6 1985 1229.6 1170.2 1155.1 1150.5 1141.9 1154.3 1032.2 1073.0 1073.0 1075.0 1093.0 1135.2 1986 1198.5 1229.5 1177.7 1102.5 1182.0 1154.8 1068.3 1128.8 1029.6 1073.2 1122.1 1145.7 1987 1244.0 1186.3 1148.6 1141.3 1165.4 1149.4 1151.0 1035.4 1109.4 1070.6 1086.8 1183.6 1988 1220.5 1160.3 1178.8 1145.2 1171.0 1241.0 1059.9 1098.5 1140.6 1198.7 1126.4 1174.4 1989 1216.1 1147.9 1150.6 1163.3 1057.0 1085.1 1058.0 1111.6 1127.6 1086.4 1153.8 1195.8 1990 1204.8 1146.1 1147.7 1187.5 1222.2 1168.8 1185.6 1069.5 1033.0 1128.8 1156.2 1174.0 1991 1144.8 1208.0 1122.8 1134.2 1125.8 1175.0 1153.7 1084.6 1113.8 1072.9 1153.8 1258.2 1992 1218.0 1199.5 1164.0 1141.5 1192.3 1200.4 1103.2 1050.4 1066.6 1117.3 1095.0 1170.7 1993 1246.0 1157.7 1129.0 1132.3 1102.4 1122.4 1058.5 1043.3 1076.1 1093.3 1131.1 1142.0 1994 1185.6 1143.5 1103.6 1143.0 1137.5 1217.8 1120.4 1076.8 1110.4 1094.1 1174.8 1134.1 1995 1161.1 1168.4 1143.3 1122.8 1091.8 1145.8 1188.5 1133.8 1004.6 1118.2 1158.1 1157.1 1996 1204.3 1197.3 1115.2 1121.8 1106.1 1133.0 1163.4 1136.4 1208.5 1087.6 1194.5 1199.5 1997 1201.6 1169.3 1095.0 1135.7 1101.8 1178.6 1088.6 1082.5 1106.2 1107.2 1228.7 1209.5 1998 1167.4 1145.0 1113.3 1037.1 1117.8 1106.1 1082.8 1083.3 1095.3 1093.9 1078.8 1146.0 1999 1185.0 1181.4 1139.0 1085.2 1084.6 1200.8 1093.7 1121.8 1137.3 1034.2 1130.3 1112.2 2000 1135.2 1133.3 1138.2 1136.7 1076.8 1136.9 1122.6 1118.5 1160.3 1083.5 1180.9 1233.7 2001 1187.3 1200.9 1151.6 1095.9 1156.3 1180.3 1150.5 1080.4 1068.3 1103.4 1108.6 1119.1 2002 1176.2 1103.6 1188.5 1146.9 1218.3 1148.5 1147.2 1074.5 1126.1 1191.4 1147.9 1139.7 2003 1225.2 1199.7 1141.4 1090.8 1148.3 1171.5 1105.8 1076.0 1070.3 1125.1 1150.5 1240.2 2004 1161.9 1216.6 1090.7 1125.0 1131.2 1074.5 1038.8 1064.3 1055.7 1111.4 1135.3 1205.6 2005 1200.7 1125.9 1146.3 1110.7 1124.5 1198.9 1124.5 1106.0 1068.1 1088.3 1142.5 1272.7 2006 1182.8 1171.9 1121.8 1130.8 1081.2 1130.0 1049.9 1214.7 1112.8 1068.5 1127.6 1167.3 2007 1192.5 1151.0 1165.8 1161.9 1162.7 1195.8 1214.5 1119.6 1142.0 1113.7 1182.4 1121.1 2008 1165.2 1113.7 1154.7 1161.7 1163.9 1112.0 1101.1 1082.7 1076.1 1069.9 1111.1 1127.9 2009 1164.9 1141.9 1122.1 1150.3 1204.6 1176.4 1134.4 1127.7 1108.9 1117.8 1171.7 1179.6 2010 1237.9 1219.9 1158.1 1125.9 1137.5 1050.8 1038.0 1039.0 1088.2 1081.1 1099.9 1211.0 2011 1188.3 1177.6 1163.7 1174.5 1107.5 1173.9 1152.7 1169.5 1124.6 1125.8 1196.8 1145.3 2012 1116.2 1179.0 1142.3 1113.9 1137.8 1116.0 1077.6 1093.9 1091.5 1104.7 1200.5 1205.6 2013 1176.6 1136.1 1095.0 1104.3 1118.3 1187.5 1108.1 1179.7 1150.3 1114.6 1170.6 1172.2 2014 1216.0 1152.5 1140.3 1111.6 1161.7 1141.9 1087.1 1122.4 1140.7 1117.9 1164.0 1118.0 2015 1186.5 1127.8 1100.6 1078.5 1119.5 1132.3 1069.4 1025.0 1086.7 1148.2 1164.8 1179.7 2016 1154.5 1145.1 1111.8 1101.6 1128.8 1072.5 1078.3 1129.1 1061.1 1112.1 1201.2 1206.1 2017 1239.8 - 1164.5 1128.5 1095.1 1148.7 1089.2 1074.6 1053.8 - - - 2018 - 1110.8 1168.1 1165.3 1180.9 1203.6 1079.8 1114.2 1049.2 1102.4 - 1181.8 2019 1170.2 - - 1132.5 - 1069.3 1148.7 1062.8 1052.6 1155.5 - - 2020 - 1168.2 - 1180.4 1093.0 1103.0 1136.7 1126.8 1112.1 1073.8 1106.0 - 2021 - 1117.3 1200.1 1096.2 1108.4 1102.6 1145.3 1091.3 1070.8 1094.4 1135.3 1143.4 2022 1197.7 1143.6 1118.6 1150.6 1153.1 1203.9 - 1085.3 - 1090.3 1051.3 - 2023 - - 1138.5 1132.4 1106.0 1149.1 1099.5 1105.9 - 1129.9 1126.8 1143.8 2024 1163.9 1135.6 1123.2 1097.1 - - - - - - - -