指定気圧面の観測データ（日ごとの値）
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秋田 1997年7月21時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1008.9 | 7 | 23.5 | 65 | 2.9 | 20 |
| 2 | 1006.9 | 7 | 19.5 | 86 | 5.6 | 250 |
| 3 | 1005.5 | 7 | 21.3 | 96 | 4.7 | 220 |
| 4 | 1001.5 | 7 | 22.6 | 85 | 7.1 | 210 |
| 5 | 1002.8 | 7 | 19.8 | 92 | 4.4 | 240 |
| 6 | 1006.4 | 7 | 21.4 | 93 | 3.2 | 110 |
| 7 | 1005.5 | 7 | 20.6 | 93 | 4.2 | 270 |
| 8 | 1009.9 | 7 | 20.3 | 83 | 0.5 | 340 |
| 9 | 1009.2 | 7 | 21.1 | 84 | 0.8 | 60 |
| 10 | 1010.3 | 7 | 21.9 | 77 | 3.3 | 360 |
| 11 | 1009.4 | 7 | 20.1 | 83 | 2.4 | 330 |
| 12 | 1007.3 | 7 | 22.8 | 74 | 2.9 | 340 |
| 13 | 1008.5 | 7 | 24.8 | 57 | 1.2 | 270 |
| 14 | 1005.7 | 7 | 22.5 | 86 | 5.7 | 230 |
| 15 | 1003.0 | 7 | 23.7 | 85 | 6.9 | 220 |
| 16 | 1003.9 | 7 | 20.8 | 82 | 2.1 | 210 |
| 17 | 1008.1 | 7 | 19.1 | 81 | 3.7 | 340 |
| 18 | 1013.4 | 7 | 20.8 | 67 | 1.4 | 250 |
| 19 | 1013.7 | 7 | 22.0 | 82 | 3.4 | 10 |
| 20 | 1013.2 | 7 | 23.6 | 82 | 0.7 | 320 |
| 21 | 1014.2 | 7 | 23.7 | 77 | 2.8 | 350 |
| 22 | 1013.7 | 7 | 24.8 | 76 | 2.9 | 360 |
| 23 | 1013.7 | 7 | 25.8 | 76 | 1.8 | 340 |
| 24 | 1011.7 | 7 | 27.4 | 73 | 1.6 | 150 |
| 25 | 1008.8 | 7 | 27.9 | 73 | 2.6 | 100 |
| 26 | 1005.3 | 7 | 27.3 | 64 | 7.6 | 120 |
| 27 | 1002.9 | 7 | 29.3 | 62 | 6.3 | 120 |
| 28 | 1004.5 | 7 | 24.7 | 92 | 3.3 | 100 |
| 29 | 1005.2 | 7 | 25.1 | 87 | 3.0 | 110 |
| 30 | 1007.7 | 7 | 26.2 | 78 | 2.1 | 340 |
| 31 | 1009.7 | 7 | 26.2 | 82 | 2.2 | 10 |