指定気圧面の観測データ（日ごとの値）
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秋田 1988年5月9時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1006.6 | 10 | 16.9 | 68 | 2.9 | 140 |
| 2 | 1007.5 | 10 | 12.6 | 91 | 2.2 | 350 |
| 3 | 1015.6 | 10 | 11.3 | 55 | 3.4 | 300 |
| 4 | 998.2 | 10 | 12.6 | 99 | 2.9 | 260 |
| 5 | 1006.7 | 10 | 8.7 | 66 | 6.1 | 310 |
| 6 | 1010.9 | 10 | 11.7 | 63 | 7.5 | 270 |
| 7 | 1011.7 | 10 | 10.1 | 69 | 3.2 | 100 |
| 8 | 1007.3 | 10 | 12.4 | 39 | 3.7 | 330 |
| 9 | 1019.8 | 10 | 10.5 | 55 | 3.0 | 300 |
| 10 | 1017.5 | 10 | 12.1 | 49 | 3.3 | 140 |
| 11 | 1013.3 | 10 | 13.7 | 80 | 2.0 | 150 |
| 12 | 1000.2 | 10 | 13.4 | 96 | 1.0 | 360 |
| 13 | 989.1 | 10 | 9.6 | 95 | 12.9 | 290 |
| 14 | 1012.6 | 10 | 12.6 | 73 | 6.5 | 280 |
| 15 | 1016.2 | 10 | 15.3 | 62 | 1.7 | 160 |
| 16 | 1015.9 | 10 | 13.1 | 92 | 2.7 | 230 |
| 17 | 1013.4 | 10 | 16.5 | 68 | 2.2 | 130 |
| 18 | 1011.9 | 10 | 18.4 | 63 | 2.2 | 210 |
| 19 | 1013.0 | 10 | 14.0 | 90 | 2.8 | 190 |
| 20 | 1006.8 | 10 | 24.0 | 46 | 3.1 | 180 |
| 21 | 1004.8 | 10 | 16.0 | 81 | 1.3 | 130 |
| 22 | 1003.3 | 10 | 17.4 | 61 | 0.3 | 130 |
| 23 | 999.6 | 10 | 11.5 | 84 | 1.3 | 80 |
| 24 | 1015.3 | 10 | 12.9 | 64 | 0.8 | 260 |
| 25 | 1017.8 | 10 | 14.0 | 55 | 6.5 | 130 |
| 26 | 1013.9 | 10 | 14.2 | 85 | 3.2 | 250 |
| 27 | 1016.8 | 10 | 13.7 | 67 | 0.7 | 240 |
| 28 | 1016.7 | 10 | 13.3 | 77 | 3.8 | 180 |
| 29 | 1013.9 | 10 | 16.7 | 74 | 3.0 | 190 |
| 30 | 1017.3 | 10 | 15.9 | 73 | 3.4 | 310 |
| 31 | 1020.1 | 10 | 16.9 | 72 | 1.7 | 140 |