指定気圧面の観測データ（日ごとの値）
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昭和 1999年1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 | 993.2 | 21 | -0.3 | 87 | 12.6 | 30 |
| 2 | 974.4 | 21 | 0.8 | 83 | 5.3 | 20 |
| 3 | 978.7 | 21 | -1.2 | 88 | 7.0 | 180 |
| 4 | 981.8 | 21 | -2.0 | 87 | 7.1 | 30 |
| 5 | 983.8 | 21 | -2.2 | 85 | 2.3 | 90 |
| 6 | 988.7 | 21 | -1.9 | 92 | 0.0 | - |
| 7 | 985.7 | 21 | -4.5 | 61 | 6.6 | 60 |
| 8 | 976.2 | 21 | -0.5 | 92 | 17.5 | 40 |
| 9 | 974.2 | 21 | 0.5 | 85 | 3.9 | 190 |
| 10 | 983.9 | 21 | -1.0 | 88 | 12.8 | 40 |
| 11 | 991.3 | 21 | -0.4 | 82 | 0.0 | - |
| 12 | 985.7 | 21 | -1.3 | 86 | 9.0 | 40 |
| 13 | 991.8 | 21 | -1.1 | 89 | 0.0 | - |
| 14 | 996.8 | 21 | -3.6 | 84 | 1.3 | 200 |
| 15 | 992.5 | 21 | -2.6 | 61 | 14.6 | 90 |
| 16 | 979.1 | 21 | -1.8 | 50 | 20.4 | 90 |
| 17 | 979.9 | 21 | -5.2 | 56 | 14.7 | 80 |
| 18 | 987.7 | 21 | -2.7 | 54 | 11.4 | 80 |
| 19 | 992.6 | 21 | -4.7 | 66 | 2.4 | 50 |
| 20 | 997.2 | 21 | -3.8 | 63 | 7.6 | 60 |
| 21 | 995.7 | 21 | -5.7 | 59 | 1.6 | 70 |
| 22 | 995.5 | 21 | -3.7 | 63 | 7.1 | 50 |
| 23 | 989.1 | 21 | -3.3 | 47 | 3.2 | 130 |
| 24 | 986.2 | 21 | -6.0 | 88 | 3.9 | 360 |
| 25 | 986.6 | 21 | -5.3 | 81 | 0.0 | - |
| 26 | 989.9 | 21 | -4.7 | 69 | 6.8 | 50 |
| 27 | 990.0 | 21 | -4.0 | 58 | 12.4 | 60 |
| 28 | 987.3 | 21 | -4.5 | 63 | 9.0 | 60 |
| 29 | 972.4 | 21 | -2.8 | 84 | 24.5 | 60 |
| 30 | 978.6 | 21 | -2.5 | 92 | 20.3 | 60 |
| 31 | 981.6 | 21 | -3.5 | 64 | 5.3 | 60 |