指定気圧面の観測データ（日ごとの値）
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昭和 2009年4月21時（現地時間 15時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 980.3 | 18 | -8.9 | 56 | 1.1 | 90 |
| 2 | 985.1 | 18 | -9.5 | 82 | 3.3 | 190 |
| 3 | 991.6 | 18 | -8.2 | 80 | 3.6 | 180 |
| 4 | 993.5 | 18 | -13.9 | 54 | 5.3 | 180 |
| 5 | 989.3 | 18 | -20.7 | 70 | 7.8 | 180 |
| 6 | 981.5 | 18 | -15.4 | 48 | 1.6 | 30 |
| 7 | 985.9 | 18 | -18.6 | 82 | 1.0 | 290 |
| 8 | 987.0 | 18 | -16.8 | 84 | 0.0 | - |
| 9 | 980.6 | 18 | -18.7 | 74 | 5.9 | 190 |
| 10 | 978.5 | 18 | -15.9 | 78 | 2.2 | 340 |
| 11 | 985.1 | 18 | -10.3 | 85 | 19.1 | 70 |
| 12 | 993.1 | 18 | -4.9 | 93 | 19.3 | 50 |
| 13 | /// | /// | /// | /// | /// | /// |
| 14 | 976.9 | 18 | -7.0 | 91 | 19.4 | 50 |
| 15 | 977.9 | 18 | -6.6 | 65 | 3.5 | 160 |
| 16 | 982.5 | 18 | -10.7 | 58 | 8.6 | 70 |
| 17 | 983.3 | 18 | -10.9 | 65 | 7.8 | 70 |
| 18 | 990.3 | 18 | -12.3 | 80 | 1.4 | 200 |
| 19 | 1001.1 | 18 | -12.3 | 66 | 1.6 | 30 |
| 20 | 999.3 | 18 | -11.7 | 63 | 3.1 | 160 |
| 21 | 986.0 | 18 | -13.8 | 57 | 11.2 | 70 |
| 22 | 980.8 | 18 | -12.1 | 58 | 1.8 | 110 |
| 23 | 990.0 | 18 | -11.9 | 83 | 3.8 | 180 |
| 24 | 993.3 | 18 | -13.4 | 67 | 2.6 | 40 |
| 25 | 982.4 | 18 | -8.9 | 91 | 15.1 | 30 |
| 26 | 974.9 | 18 | -8.2 | 91 | 22.7 | 70 |
| 27 | 984.6 | 18 | -16.4 | 78 | 5.4 | 200 |
| 28 | 986.9 | 18 | -16.5 | 50 | 5.9 | 60 |
| 29 | 995.5 | 18 | -17.3 | 55 | 6.6 | 160 |
| 30 | 996.1 | 18 | -13.8 | 49 | 6.7 | 110 |