指定気圧面の観測データ（日ごとの値）
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昭和 2000年12月21時（現地時間 15時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 991.8 | 21 | 1.5 | 69 | 1.3 | 40 |
| 2 | 986.1 | 21 | -0.2 | 74 | 3.4 | 360 |
| 3 | 987.4 | 21 | -0.1 | 77 | 3.8 | 20 |
| 4 | 989.7 | 21 | 1.0 | 64 | 1.8 | 30 |
| 5 | 991.9 | 21 | 0.3 | 54 | 1.6 | 40 |
| 6 | 993.7 | 21 | -0.1 | 67 | 1.5 | 170 |
| 7 | 988.1 | 21 | -1.4 | 67 | 2.2 | 300 |
| 8 | 989.7 | 21 | -3.4 | 78 | 2.3 | 30 |
| 9 | 993.7 | 21 | 1.1 | 55 | 0.9 | 70 |
| 10 | 992.2 | 21 | -0.2 | 61 | 2.5 | 260 |
| 11 | 999.1 | 21 | 1.3 | 56 | 1.7 | 320 |
| 12 | 999.4 | 21 | 0.5 | 66 | 3.2 | 260 |
| 13 | 996.3 | 21 | -1.0 | 61 | 1.6 | 80 |
| 14 | 999.2 | 21 | -0.3 | 54 | 1.8 | 320 |
| 15 | 997.5 | 21 | -0.1 | 65 | 2.3 | 30 |
| 16 | 995.9 | 21 | 0.8 | 69 | 3.4 | 20 |
| 17 | 992.9 | 21 | -0.2 | 62 | 1.3 | 20 |
| 18 | 991.8 | 21 | 2.0 | 57 | 3.4 | 30 |
| 19 | 980.3 | 21 | 3.5 | 40 | 1.2 | 320 |
| 20 | 978.9 | 21 | 1.6 | 51 | 4.8 | 160 |
| 21 | 981.3 | 21 | 2.1 | 47 | 2.6 | 210 |
| 22 | 985.7 | 21 | -1.4 | 71 | 6.1 | 350 |
| 23 | 991.5 | 21 | 0.3 | 61 | 2.1 | 120 |
| 24 | 998.9 | 21 | -0.2 | 77 | 4.4 | 30 |
| 25 | 1004.9 | 21 | 0.0 | 74 | 3.4 | 30 |
| 26 | 1001.3 | 21 | -0.1 | 68 | 3.3 | 40 |
| 27 | 998.4 | 21 | 2.8 | 50 | 1.9 | 90 |
| 28 | 992.3 | 21 | 3.0 | 60 | 10.2 | 60 |
| 29 | 989.5 | 21 | 2.7 | 61 | 13.4 | 60 |
| 30 | 993.2 | 21 | 2.7 | 66 | 3.4 | 60 |
| 31 | 990.8 | 21 | 3.8 | 44 | 2.5 | 110 |