指定気圧面の観測データ（日ごとの値）
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昭和 1999年9月9時（現地時間 3時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 984.2 | 21 | -8.3 | 72 | 11.4 | 70 |
| 2 | 972.7 | 21 | -17.3 | 64 | 11.8 | 70 |
| 3 | 972.9 | 21 | -22.0 | 45 | 1.1 | 100 |
| 4 | 978.6 | 21 | -27.4 | 60 | 0.8 | 80 |
| 5 | 973.6 | 21 | -12.1 | 87 | 18.0 | 40 |
| 6 | 990.2 | 21 | -21.7 | 76 | 4.4 | 20 |
| 7 | 993.3 | 21 | -32.8 | 74 | 3.3 | 260 |
| 8 | 989.8 | 21 | -34.1 | 71 | 0.2 | - |
| 9 | 987.2 | 21 | -26.3 | 78 | 5.7 | 160 |
| 10 | 983.8 | 21 | -28.1 | 74 | 1.0 | 20 |
| 11 | 1001.9 | 21 | -19.5 | 62 | 2.1 | 90 |
| 12 | 1007.2 | 21 | -15.5 | 60 | 7.2 | 80 |
| 13 | 995.2 | 21 | -16.3 | 52 | 3.0 | 50 |
| 14 | 992.1 | 21 | -20.2 | 61 | 10.4 | 90 |
| 15 | 989.5 | 21 | -24.2 | 51 | 2.0 | 160 |
| 16 | 986.1 | 21 | -28.9 | 70 | 0.5 | 310 |
| 17 | 995.6 | 21 | -25.8 | 72 | 0.4 | 40 |
| 18 | 992.1 | 21 | -9.4 | 44 | 4.7 | 160 |
| 19 | 979.5 | 21 | -11.1 | 52 | 7.8 | 70 |
| 20 | 985.3 | 21 | -11.8 | 51 | 13.2 | 80 |
| 21 | 988.5 | 21 | -17.5 | 47 | 1.2 | 160 |
| 22 | 986.3 | 21 | -17.4 | 62 | 6.2 | 180 |
| 23 | 985.9 | 21 | -18.3 | 71 | 0.7 | 170 |
| 24 | 989.1 | 21 | -17.9 | 59 | 2.6 | 130 |
| 25 | 984.8 | 21 | -15.8 | 73 | 10.8 | 40 |
| 26 | 985.4 | 21 | -15.5 | 78 | 12.8 | 40 |
| 27 | 981.8 | 21 | -15.5 | 84 | 20.5 | 40 |
| 28 | 989.1 | 21 | -17.8 | 83 | 3.1 | 260 |
| 29 | 990.1 | 21 | -23.8 | 79 | 3.3 | 350 |
| 30 | 982.3 | 21 | -28.0 | 75 | 3.2 | 350 |