指定気圧面の観測データ（日ごとの値）
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八丈島 2020年11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 | 1006.8 | 155 | 20.8 | 63 | 5.1 | 70 |
| 2 | 1002.5 | 155 | 23.6 | 60 | 1.9 | 197 |
| 3 | 991.3 | 155 | 17.7 | 96 | 7.3 | 70 |
| 4 | 996.8 | 155 | 15.6 | 58 | 5.0 | 290 |
| 5 | 1005.4 | 155 | 17.7 | 60 | 2.7 | 270 |
| 6 | 1008.4 | 155 | 19.6 | 69 | 1.5 | 139 |
| 7 | 1002.7 | 155 | 19.8 | 98 | 2.8 | 239 |
| 8 | 995.1 | 155 | 20.9 | 88 | 3.1 | 260 |
| 9 | 996.3 | 155 | 17.8 | 65 | 4.3 | 290 |
| 10 | 1001.4 | 155 | 16.5 | 59 | 4.2 | 273 |
| 11 | 1006.6 | 155 | 16.3 | 56 | 2.6 | 278 |
| 12 | 1010.5 | 155 | 16.1 | 86 | 5.2 | 66 |
| 13 | 1005.1 | 155 | 17.9 | 92 | 6.4 | 70 |
| 14 | 1005.1 | 155 | 18.7 | 78 | 3.1 | 43 |
| 15 | 1011.6 | 155 | 17.2 | 65 | 3.4 | 70 |
| 16 | 1007.5 | 155 | 16.8 | 96 | 0.8 | 340 |
| 17 | 1007.7 | 155 | 20.9 | 67 | 3.2 | 70 |
| 18 | 1007.2 | 155 | 20.6 | 70 | 3.9 | 110 |
| 19 | 1004.6 | 155 | 20.2 | 86 | 1.0 | 190 |
| 20 | 997.4 | 155 | 22.8 | 84 | 3.3 | 223 |
| 21 | 995.4 | 155 | 19.3 | 61 | 6.0 | 280 |
| 22 | 1004.8 | 155 | 17.0 | 65 | 1.7 | 71 |
| 23 | 995.8 | 155 | 18.8 | 98 | 5.1 | 270 |
| 24 | 1001.7 | 155 | 19.6 | 73 | 1.9 | 236 |
| 25 | 1002.7 | 155 | 18.2 | 93 | 1.5 | 3 |
| 26 | 1002.7 | 155 | 19.4 | 69 | 1.0 | 156 |
| 27 | 1001.6 | 155 | 18.8 | 80 | 0.6 | 46 |
| 28 | 995.0 | 155 | 17.2 | 73 | 2.8 | 300 |
| 29 | 1002.7 | 155 | 12.5 | 92 | 4.6 | 290 |
| 30 | 1005.5 | 155 | 15.8 | 72 | 2.9 | 290 |