指定気圧面の観測データ（日ごとの値）
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昭和 1980年5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 | 986.4 | 21 | -17.6 | 64 | 2.2 | 30 |
| 2 | 982.3 | 21 | -7.8 | 87 | 13.6 | 30 |
| 3 | 979.2 | 21 | -6.8 | 69 | 12.5 | 50 |
| 4 | /// | /// | /// | /// | /// | /// |
| 5 | 984.3 | 21 | -11.3 | 57 | 6.8 | 40 |
| 6 | 987.9 | 21 | -14.1 | 64 | 3.7 | 180 |
| 7 | 990.4 | 21 | -16.4 | 47 | 0.3 | 110 |
| 8 | 987.1 | 21 | -16.8 | 47 | 2.7 | 110 |
| 9 | 981.8 | 21 | -21.0 | 56 | 4.2 | 10 |
| 10 | 976.6 | 21 | -6.0 | 52 | 15.5 | 70 |
| 11 | /// | /// | /// | /// | /// | /// |
| 12 | 995.5 | 21 | -5.0 | 70 | 0.2 | - |
| 13 | 998.8 | 21 | -2.6 | 59 | 14.6 | 50 |
| 14 | 997.2 | 21 | -8.3 | 63 | 2.7 | 120 |
| 15 | 990.7 | 21 | -10.4 | 39 | 6.3 | 50 |
| 16 | 997.6 | 21 | -10.8 | 44 | 10.3 | 90 |
| 17 | 991.2 | 21 | -14.0 | 44 | 13.3 | 80 |
| 18 | /// | /// | /// | /// | /// | /// |
| 19 | 999.2 | 21 | -10.6 | 65 | 1.4 | 100 |
| 20 | 999.6 | 21 | -14.0 | 39 | 5.5 | 30 |
| 21 | 959.5 | 21 | -6.7 | 73 | 26.5 | 70 |
| 22 | 968.7 | 21 | -8.0 | 82 | 20.5 | 50 |
| 23 | 991.0 | 21 | -8.5 | 72 | 11.0 | 30 |
| 24 | 979.0 | 21 | -6.5 | 81 | 15.0 | 40 |
| 25 | /// | /// | /// | /// | /// | /// |
| 26 | 973.2 | 21 | -7.4 | 79 | 3.1 | 160 |
| 27 | 980.6 | 21 | -15.8 | 77 | 0.7 | 310 |
| 28 | 981.9 | 21 | -8.9 | 73 | 0.8 | 230 |
| 29 | 979.7 | 21 | -6.2 | 77 | 11.9 | 30 |
| 30 | 984.2 | 21 | -4.8 | 59 | 15.1 | 90 |
| 31 | 977.5 | 21 | -6.7 | 63 | 12.0 | 60 |