指定気圧面の観測データ（日ごとの値）
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昭和 1986年2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 | 982.4 | 21 | -1.3 | 60 | 10.2 | 50 |
| 2 | 987.8 | 21 | -1.3 | 77 | 12.0 | 40 |
| 3 | 984.6 | 21 | -0.9 | 58 | 3.8 | 30 |
| 4 | 990.0 | 21 | -1.4 | 55 | 4.0 | 30 |
| 5 | 991.1 | 21 | 1.0 | 60 | 1.5 | 70 |
| 6 | 988.2 | 21 | 1.7 | 52 | 1.4 | 320 |
| 7 | 988.8 | 21 | 0.7 | 52 | 4.3 | 210 |
| 8 | 997.0 | 21 | -0.7 | 69 | 3.1 | 360 |
| 9 | 997.3 | 21 | -0.7 | 64 | 1.1 | 70 |
| 10 | 989.8 | 21 | 4.0 | 60 | 7.4 | 60 |
| 11 | 986.8 | 21 | 3.8 | 66 | 7.3 | 190 |
| 12 | 989.1 | 21 | 2.9 | 67 | 1.5 | 20 |
| 13 | 988.5 | 21 | 4.3 | 55 | 3.2 | 360 |
| 14 | 986.0 | 21 | 2.5 | 43 | 1.1 | 20 |
| 15 | 1000.0 | 21 | -0.5 | 66 | 5.3 | 40 |
| 16 | 994.6 | 21 | 1.9 | 56 | 3.9 | 170 |
| 17 | 977.7 | 21 | 2.0 | 42 | 2.7 | 270 |
| 18 | 980.9 | 21 | 5.6 | 47 | 2.7 | 20 |
| 19 | 989.4 | 21 | 1.9 | 57 | 7.5 | 30 |
| 20 | 995.7 | 21 | 1.1 | 54 | 2.7 | 360 |
| 21 | 992.9 | 21 | -0.2 | 61 | 5.7 | 30 |
| 22 | 994.7 | 21 | 0.2 | 62 | 1.2 | 60 |
| 23 | 1001.5 | 21 | -0.5 | 56 | 2.1 | 310 |
| 24 | 1003.4 | 21 | -1.8 | 49 | 1.7 | 360 |
| 25 | 997.8 | 21 | -1.9 | 43 | 5.4 | 180 |
| 26 | 1002.6 | 21 | 0.1 | 49 | 2.0 | 20 |
| 27 | 1000.2 | 21 | 2.6 | 48 | 3.4 | 170 |
| 28 | 994.3 | 21 | -0.2 | 60 | 4.3 | 30 |