指定気圧面の観測データ（日ごとの値）
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八丈島 1993年11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 | 1004.5 | 153 | 16.1 | 64 | 2.0 | 310 |
| 2 | 1005.8 | 153 | 18.3 | 78 | 2.0 | 250 |
| 3 | 1005.5 | 153 | 17.2 | 60 | 2.0 | 260 |
| 4 | 1002.5 | 153 | 18.8 | 75 | 1.0 | 240 |
| 5 | 1001.9 | 153 | 17.3 | 79 | 1.0 | 240 |
| 6 | 999.3 | 153 | 18.8 | 79 | 3.0 | 230 |
| 7 | 1002.2 | 153 | 19.3 | 79 | 6.0 | 50 |
| 8 | 1000.4 | 153 | 18.3 | 95 | 3.0 | 30 |
| 9 | 1007.8 | 153 | 16.2 | 64 | 5.0 | 50 |
| 10 | 1008.2 | 153 | 16.5 | 62 | 2.0 | 50 |
| 11 | 1003.2 | 153 | 18.5 | 72 | 5.0 | 70 |
| 12 | 1001.1 | 153 | 20.3 | 82 | 5.0 | 50 |
| 13 | 993.2 | 153 | 22.0 | 95 | 4.0 | 160 |
| 14 | 993.0 | 153 | 19.4 | 67 | 4.0 | 260 |
| 15 | 1000.9 | 153 | 19.4 | 68 | 3.0 | 50 |
| 16 | 1004.3 | 153 | 17.3 | 66 | 3.0 | 40 |
| 17 | 1006.7 | 153 | 19.0 | 65 | 3.0 | 60 |
| 18 | 1002.1 | 153 | 18.4 | 86 | 2.0 | 270 |
| 19 | 1006.7 | 153 | 19.3 | 71 | 7.0 | 50 |
| 20 | 1004.2 | 153 | 18.3 | 80 | 3.0 | 50 |
| 21 | 989.5 | 153 | 21.4 | 86 | 9.0 | 220 |
| 22 | 999.6 | 153 | 13.6 | 62 | 3.0 | 270 |
| 23 | 995.3 | 153 | 17.1 | 60 | 9.0 | 230 |
| 24 | 1004.8 | 153 | 10.8 | 54 | 2.0 | 300 |
| 25 | 1009.2 | 153 | 10.2 | 70 | 2.0 | 270 |
| 26 | 1003.6 | 153 | 17.0 | 68 | 3.0 | 220 |
| 27 | 1000.2 | 153 | 15.7 | 80 | 3.0 | 260 |
| 28 | 1005.6 | 153 | 11.7 | 62 | 6.0 | 280 |
| 29 | 1008.4 | 153 | 13.6 | 69 | 3.0 | 260 |
| 30 | 1006.9 | 153 | 12.3 | 81 | 2.0 | 320 |