指定気圧面の観測データ（日ごとの値）
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八丈島 2011年6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 | 999.2 | 155 | 17.8 | 61 | 3.7 | 76 |
| 2 | 1000.4 | 155 | 18.4 | 79 | 1.7 | 206 |
| 3 | 996.4 | 155 | 18.7 | 96 | 4.7 | 196 |
| 4 | 993.8 | 155 | 21.3 | 88 | 3.3 | 255 |
| 5 | 992.9 | 155 | 22.6 | 79 | 5.4 | 225 |
| 6 | 989.4 | 155 | 21.6 | 75 | 5.4 | 248 |
| 7 | 992.2 | 155 | 20.5 | 91 | 2.1 | 228 |
| 8 | 985.1 | 155 | 20.0 | 95 | 4.6 | 38 |
| 9 | 991.4 | 155 | 21.4 | 85 | 3.4 | 62 |
| 10 | 991.8 | 155 | 23.0 | 83 | 4.0 | 235 |
| 11 | 988.1 | 155 | 22.6 | 96 | 10.5 | 219 |
| 12 | 989.5 | 155 | 22.4 | 92 | 3.6 | 267 |
| 13 | 986.9 | 155 | 23.0 | 96 | 12.8 | 222 |
| 14 | 989.4 | 155 | 23.7 | 82 | 6.2 | 240 |
| 15 | 992.4 | 155 | 22.3 | 86 | 3.1 | 236 |
| 16 | 996.3 | 155 | 21.8 | 82 | 1.7 | 177 |
| 17 | 990.4 | 155 | 22.5 | 100 | 9.5 | 214 |
| 18 | 991.8 | 155 | 20.9 | 99 | 2.7 | 226 |
| 19 | 991.6 | 155 | 20.3 | 99 | 5.3 | 33 |
| 20 | 995.8 | 155 | 23.1 | 96 | 5.1 | 233 |
| 21 | 997.2 | 155 | 23.3 | /// | 5.7 | 222 |
| 22 | 995.6 | 155 | 23.4 | /// | 5.0 | 214 |
| 23 | 993.5 | 155 | 23.4 | 99 | 6.6 | 222 |
| 24 | 993.3 | 155 | 24.1 | 98 | 9.4 | 222 |
| 25 | 997.4 | 155 | 24.0 | /// | 6.5 | 211 |
| 26 | 1000.2 | 155 | 24.4 | /// | 4.7 | 216 |
| 27 | 999.0 | 155 | 24.8 | 98 | 6.3 | 213 |
| 28 | /// | /// | /// | /// | /// | /// |
| 29 | 997.0 | 155 | 27.1 | 89 | 4.9 | 251 |
| 30 | 996.1 | 155 | 28.3 | 76 | 7.0 | 273 |