Davis 00Z 850hPa height 1959 - - - 1135.0 1155.8 1192.8 1125.7 1155.0 1092.6 1116.3 1095.9 1213.3 1960 1175.2 1148.5 1062.1 1141.0 1139.7 1104.7 1091.7 1113.7 1023.1 1124.8 1128.0 - 1961 - 1220.7 1156.2 1159.3 1132.3 1174.6 1092.2 1095.8 1173.0 1123.8 1174.6 1145.5 1962 1160.0 1163.0 1128.1 1113.7 1131.3 1224.8 1081.0 1030.7 1090.7 1071.9 1168.0 1155.5 1963 1140.0 1144.6 1118.3 1120.3 1156.6 1124.1 1108.4 1223.3 1127.3 1081.9 1085.7 1209.7 1964 1254.2 1178.1 1142.4 1115.0 1070.4 1244.6 1270.0 1128.5 1052.0 1070.3 - - 1965 - - - - - - - - - - - - 1966 - - - - - - - - - - - - 1967 - - - - - - - - - - - - 1968 - - - - - - - - - - - - 1969 - - - 1155.6 1161.2 - 1069.3 1048.7 1083.8 1133.5 1159.0 1190.3 1970 1178.4 1156.4 1160.6 1167.3 1129.0 1137.9 1120.6 1074.7 1121.7 1126.8 1141.0 1221.0 1971 1236.5 1190.4 1128.4 1164.0 1191.9 1095.3 1118.7 1110.7 1144.0 1111.0 1141.3 1224.5 1972 1223.0 1185.2 1198.7 1178.3 1148.0 1166.8 1157.7 1190.3 1137.6 1113.5 1116.7 1202.3 1973 1229.7 1168.2 1089.7 1137.2 1196.5 1152.0 1094.2 1060.0 1111.7 1118.4 1150.3 1151.9 1974 1193.9 1145.7 1117.1 1173.3 1141.3 1144.5 1131.3 1181.9 1056.0 1117.7 1189.3 1249.7 1975 1223.2 1192.1 1154.8 1114.3 1203.5 1165.7 1153.7 1081.0 1087.9 1085.2 1125.7 1209.4 1976 1221.9 1175.5 1149.7 1088.3 1093.2 1112.7 1093.9 1084.5 1044.3 1076.8 1186.7 1293.5 1977 1238.7 1186.1 1143.0 1150.0 1163.9 1181.0 1163.9 1162.6 1026.0 1065.8 1133.7 1188.4 1978 1163.8 1186.5 1174.5 1150.0 1170.3 1134.8 1191.3 1035.2 1095.7 1101.6 1156.3 1173.9 1979 1196.4 1152.6 1101.3 1142.7 1091.9 1095.9 1056.1 1084.8 1081.5 1082.4 1174.6 1223.5 1980 1222.0 1195.2 1169.4 1190.7 1113.9 1091.4 1136.5 1156.3 1129.3 1090.3 1166.3 1198.1 1981 1197.7 1155.6 1182.0 1190.3 1137.9 1108.7 1151.9 1159.4 1093.7 1069.4 1126.7 1149.0 1982 1205.0 1163.6 1099.7 1077.0 1092.6 1093.7 1124.2 1078.9 1058.2 1108.1 1195.7 1257.1 1983 1225.2 1206.8 1148.4 1115.3 1155.2 1134.3 1101.7 1107.0 1094.3 1087.9 1109.7 1158.7 1984 1222.3 1178.3 1132.6 1134.6 1164.5 1137.9 1082.6 1131.9 1069.3 1051.3 1153.3 1252.3 1985 1243.7 1171.8 1131.6 1147.0 1153.3 1174.7 1004.1 1077.6 1082.3 1081.0 1076.9 1165.3 1986 1206.1 1237.5 1197.1 1120.0 1185.8 1147.3 1068.7 1099.7 1032.7 1041.0 1131.0 1161.0 1987 1246.5 1190.0 1145.7 1149.7 1131.9 1137.6 1136.8 1033.5 1099.7 1069.7 1124.0 1178.1 1988 1209.7 1166.0 1172.9 1095.9 - 1286.1 1097.2 1070.4 1140.6 1173.6 1119.1 1158.7 1989 1210.0 1150.4 1134.5 1153.0 1026.8 1094.1 1073.2 1125.5 1096.4 1096.3 1161.5 1187.9 1990 1211.7 1147.9 1158.9 1197.2 1203.2 1156.9 1211.6 1069.7 1033.7 1124.8 1159.0 1173.3 1991 1146.7 1172.6 1107.7 1138.0 1124.0 1165.8 1172.4 1081.7 1128.0 1068.3 1148.6 1250.5 1992 1211.1 1229.2 1173.6 1126.4 1210.0 1171.0 1090.2 1072.9 1043.8 1126.8 1098.9 1151.4 1993 1244.6 1115.7 1135.3 1119.7 1063.7 1092.5 1041.5 1033.6 1061.2 1050.1 1115.5 1169.9 1994 1191.0 1111.1 1094.9 1131.0 1168.7 - 1131.6 1057.9 1087.8 1088.6 1186.1 1115.4 1995 1162.7 1162.4 1134.5 1134.8 1097.4 1136.7 1216.1 1102.5 1002.3 1108.2 1151.3 1143.5 1996 1195.1 1197.3 1113.8 1126.6 1111.7 1148.8 1135.7 1107.5 1169.7 1087.3 1187.6 1193.5 1997 1188.0 1162.3 1085.9 1156.1 1088.1 1152.5 1050.0 1075.4 1058.9 1105.5 1175.9 1209.6 1998 1165.7 1153.0 1109.3 1024.0 1096.5 1086.8 1099.3 1056.3 1117.0 1105.6 1087.6 1115.7 1999 1180.4 1174.5 1163.0 1099.3 1090.1 1196.6 1102.5 1068.8 1097.4 1021.6 1113.5 1100.3 2000 1125.5 1141.0 1135.7 1152.2 1084.4 1150.3 1121.0 1096.7 1138.2 1054.8 1169.5 1233.2 2001 1171.6 1217.4 1134.3 1078.1 1128.8 1107.9 1123.2 1069.6 1060.3 1067.7 1111.9 1144.6 2002 1154.0 1096.6 1186.0 1111.8 1209.1 1128.6 1145.1 1057.3 1127.0 1169.0 1143.4 1121.2 2003 1226.3 1183.4 1152.7 1096.9 1132.8 1207.7 1122.9 1057.2 1095.7 1101.5 1143.8 1220.5 2004 1177.5 1212.4 1101.2 1096.8 1143.6 1071.4 - 1065.2 1050.6 1120.6 1145.1 1204.9 2005 1194.5 1139.3 1156.6 1093.7 1139.1 1176.2 1119.7 1076.3 1071.2 1090.7 1133.3 1264.7 2006 1182.2 1165.5 1130.9 1135.1 1089.6 1102.4 1034.5 1183.8 1111.9 1082.6 1115.8 1158.1 2007 1197.4 1145.9 1156.2 1161.9 1141.5 1191.6 1218.5 1119.1 1113.6 1121.3 1150.4 1141.8 2008 1163.9 1125.8 1144.6 1151.7 1160.2 1107.1 1130.0 1062.7 1082.1 1045.2 1104.1 1158.4 2009 1176.9 1178.0 1138.7 1147.7 1157.7 1181.4 1132.5 1133.2 1136.1 1102.9 1167.3 1171.7 2010 1233.5 1209.1 1150.4 1133.0 1112.6 1059.1 1026.3 1046.1 1081.5 1094.2 1131.3 1200.4 2011 1224.7 1157.4 1155.5 1159.9 1107.1 1168.6 1151.0 1069.9 1129.7 1089.4 1218.2 1123.3 2012 1123.3 1176.8 1127.0 1118.1 1126.4 1129.9 1063.0 1085.5 1072.5 1093.5 1189.4 1215.8 2013 1188.8 1124.8 1087.3 1126.7 1101.8 1176.5 1122.1 1174.4 1159.2 1142.4 1177.6 1180.5 2014 1201.3 1157.9 1147.4 1122.1 1169.8 1124.0 1094.6 1077.1 1138.8 1098.5 1156.8 1134.3 2015 1189.4 1113.1 1128.5 - - - - - - 1093.1 1106.2 1168.8 2016 1148.3 1154.7 1079.5 1109.0 1096.5 1068.7 1095.4 1136.1 1066.7 1107.6 1181.5 1197.2 2017 1232.0 1182.8 1143.5 1083.0 1088.2 1120.2 1120.8 1050.1 1057.9 1110.4 1138.0 1159.0 2018 1165.0 1156.3 1158.3 1165.3 1117.8 1177.5 1102.3 1141.1 1052.4 1056.8 1111.6 1173.6 2019 1159.5 1188.1 1149.8 1153.9 1168.2 1100.4 1129.1 1094.0 1073.1 1154.5 1216.4 1257.9 2020 1219.5 1165.9 1094.1 1144.9 1123.3 1136.2 1134.2 1163.4 1085.6 1105.1 1158.6 1125.9 2021 1140.7 1126.5 1147.8 1099.7 1108.7 1118.7 1148.3 1077.9 1034.9 1092.3 1117.2 1127.5 2022 1174.8 1136.8 1131.4 1111.9 1141.6 1171.0 1089.5 1124.9 1046.4 1100.8 1067.8 1111.5 2023 1114.7 1143.9 1155.0 1161.1 1112.5 1173.3 1116.1 1080.0 1119.5 1109.7 1126.5 1130.7 2024 1162.8 1123.6 1108.6 1092.9 - - - - - - - -