指定気圧面の観測データ（日ごとの値）
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昭和 1984年4月21時（現地時間 15時） 50hPa
| 日 | ジオポテンシャル 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|
| 1 | 19887 | -54.5 | /// | 13.0 | 280 |
| 2 | 19855 | -56.0 | /// | 10.5 | 295 |
| 3 | 19826 | -56.3 | /// | 11.4 | 268 |
| 4 | 19791 | -57.0 | /// | 12.3 | 264 |
| 5 | 19766 | -58.4 | /// | 14.6 | 280 |
| 6 | 19779 | -58.9 | /// | 15.0 | 286 |
| 7 | 19747 | -60.8 | /// | 15.6 | 276 |
| 8 | 19697 | -61.6 | /// | 14.8 | 279 |
| 9 | 19732 | -60.3 | /// | 16.9 | 247 |
| 10 | /// | /// | /// | /// | /// |
| 11 | 19863 | -62.6 | /// | 30.4 | 266 |
| 12 | 19874 | -60.1 | /// | 24.2 | 275 |
| 13 | 19870 | -58.5 | /// | 24.9 | 273 |
| 14 | 19894 | -60.2 | /// | 30.3 | 279 |
| 15 | 19796 | -58.8 | /// | 24.2 | 289 |
| 16 | 19707 | -61.2 | /// | 22.1 | 291 |
| 17 | 19685 | -60.9 | /// | 26.1 | 275 |
| 18 | 19727 | -63.3 | /// | 26.0 | 282 |
| 19 | 19637 | -61.5 | /// | 23.6 | 306 |
| 20 | /// | /// | /// | /// | /// |
| 21 | 19521 | -62.1 | /// | 18.8 | 294 |
| 22 | 19535 | -60.9 | /// | 21.0 | 284 |
| 23 | 19618 | -62.1 | /// | 23.5 | 272 |
| 24 | 19577 | -64.6 | /// | 22.7 | 281 |
| 25 | 19540 | -64.0 | /// | 21.6 | 265 |
| 26 | 19547 | -63.8 | /// | 18.1 | 256 |
| 27 | 19673 | -62.7 | /// | 22.2 | 258 |
| 28 | 19732 | -60.4 | /// | 25.7 | 257 |
| 29 | 19807 | -60.7 | /// | 25.2 | 262 |
| 30 | 19897 | -60.0 | /// | 24.9 | 275 |