指定気圧面の観測データ（日ごとの値）
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名瀬／本茶峠 1998年7月9時 250hPa
| 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 | 11026 | -39.4 | 27 | 11 | 158 |
| 2 | 11034 | -40.1 | /// | 4 | 148 |
| 3 | 11042 | -40.7 | /// | 2 | 134 |
| 4 | 11011 | -42.0 | /// | 9 | 99 |
| 5 | 10980 | -42.3 | /// | 4 | 97 |
| 6 | 10971 | -42.9 | /// | 5 | 76 |
| 7 | 11004 | -41.3 | /// | 12 | 78 |
| 8 | 11030 | -40.0 | /// | 11 | 75 |
| 9 | 11045 | -38.2 | 1 | 8 | 104 |
| 10 | 11052 | -37.3 | 1 | 11 | 20 |
| 11 | 11055 | -36.7 | 35 | 10 | 59 |
| 12 | 11050 | -37.4 | 54 | 5 | 1 |
| 13 | 11037 | -38.2 | 17 | 15 | 350 |
| 14 | 11043 | -37.1 | 14 | 7 | 46 |
| 15 | 11022 | -36.5 | 21 | 9 | 334 |
| 16 | 10990 | -35.6 | 79 | 14 | 299 |
| 17 | 10987 | -35.6 | 81 | 15 | 331 |
| 18 | 11026 | -35.2 | 75 | 5 | 11 |
| 19 | 11053 | -33.4 | 62 | 8 | 308 |
| 20 | 11025 | -35.2 | 44 | 17 | 291 |
| 21 | 11016 | -36.5 | 51 | 23 | 293 |
| 22 | 10979 | -36.2 | 80 | 17 | 288 |
| 23 | 10984 | -36.0 | 74 | 10 | 259 |
| 24 | 10991 | -37.6 | 69 | 4 | 331 |
| 25 | 10998 | -36.6 | 65 | 2 | 265 |
| 26 | 11011 | -35.7 | 85 | 8 | 272 |
| 27 | 11019 | -37.0 | 49 | 6 | 262 |
| 28 | 11003 | -37.9 | 58 | 11 | 227 |
| 29 | 11003 | -38.1 | 59 | 11 | 249 |
| 30 | 11013 | -38.1 | 58 | 4 | 29 |
| 31 | 11026 | -37.7 | 36 | 3 | 130 |