指定気圧面の観測データ（日ごとの値）
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昭和 1987年4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 | 989.4 | 21 | -10.8 | 54 | 7.1 | 60 |
| 2 | 993.9 | 21 | -9.2 | 68 | 4.2 | 170 |
| 3 | 997.7 | 21 | -13.9 | 82 | 2.9 | 210 |
| 4 | 990.6 | 21 | -5.0 | 84 | 9.2 | 40 |
| 5 | 987.9 | 21 | -5.7 | 88 | 18.5 | 50 |
| 6 | 981.1 | 21 | -5.6 | 89 | 7.0 | 360 |
| 7 | 989.3 | 21 | -4.4 | 88 | 16.1 | 40 |
| 8 | 987.1 | 21 | -5.1 | 68 | 16.4 | 60 |
| 9 | 982.2 | 21 | -6.1 | 67 | 9.5 | 70 |
| 10 | 983.0 | 21 | -7.4 | 83 | 5.1 | 170 |
| 11 | 984.1 | 21 | -5.7 | 54 | 4.2 | 100 |
| 12 | 963.1 | 21 | -3.5 | 74 | 15.0 | 70 |
| 13 | 972.4 | 21 | -6.4 | 73 | 17.3 | 60 |
| 14 | 984.8 | 21 | -8.1 | 53 | 7.3 | 110 |
| 15 | 984.4 | 21 | -9.9 | 56 | 6.2 | 60 |
| 16 | 979.8 | 21 | -9.2 | 73 | 10.1 | 80 |
| 17 | 980.5 | 21 | -12.6 | 84 | 6.1 | 170 |
| 18 | 976.8 | 21 | -6.1 | 80 | 17.0 | 60 |
| 19 | 980.7 | 21 | -4.6 | 85 | 16.3 | 50 |
| 20 | 980.9 | 21 | -6.6 | 71 | 15.9 | 70 |
| 21 | 985.1 | 21 | -6.9 | 72 | 7.6 | 60 |
| 22 | 983.8 | 21 | -7.8 | 57 | 13.2 | 70 |
| 23 | 979.2 | 21 | -7.0 | 77 | 5.8 | 60 |
| 24 | 972.4 | 21 | -13.6 | 87 | 4.2 | 200 |
| 25 | 986.6 | 21 | -19.1 | 61 | 3.2 | 200 |
| 26 | 988.7 | 21 | -12.2 | 79 | 6.6 | 180 |
| 27 | 977.4 | 21 | -6.3 | 71 | 11.9 | 60 |
| 28 | 990.7 | 21 | -3.8 | 86 | 18.1 | 50 |
| 29 | 969.7 | 21 | -4.6 | 76 | 24.1 | 80 |
| 30 | 981.8 | 21 | -7.9 | 57 | 14.4 | 80 |