指定気圧面の観測データ（日ごとの値）
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昭和 2003年5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 | 1002.6 | 21 | -15.6 | 83 | 4.4 | 180 |
| 2 | 995.7 | 21 | -11.9 | 88 | 5.6 | 180 |
| 3 | 1000.4 | 21 | -13.8 | 51 | 3.2 | 70 |
| 4 | 990.7 | 21 | -18.2 | 58 | 3.4 | 100 |
| 5 | 970.9 | 21 | -17.1 | 60 | 7.4 | 90 |
| 6 | 975.7 | 21 | -15.1 | 66 | 13.5 | 90 |
| 7 | 981.3 | 21 | -8.2 | 72 | 9.9 | 50 |
| 8 | 989.6 | 21 | -7.8 | 78 | 10.2 | 50 |
| 9 | 983.6 | 21 | -9.2 | 71 | 6.7 | 50 |
| 10 | 979.0 | 21 | -9.6 | 67 | 7.2 | 30 |
| 11 | 973.1 | 21 | -9.3 | 70 | 14.3 | 70 |
| 12 | 959.7 | 21 | -7.0 | 83 | 5.0 | 50 |
| 13 | 967.5 | 21 | -7.2 | 88 | 13.7 | 50 |
| 14 | 980.2 | 21 | -9.9 | 64 | 3.6 | 40 |
| 15 | 975.8 | 21 | -16.2 | 77 | 3.1 | 230 |
| 16 | 982.4 | 21 | -19.6 | 83 | 5.1 | 170 |
| 17 | 976.4 | 21 | -15.2 | 79 | 3.2 | 170 |
| 18 | 988.1 | 21 | -9.5 | 65 | 4.3 | 30 |
| 19 | 988.1 | 21 | -18.6 | 43 | 2.0 | 140 |
| 20 | 972.9 | 21 | -22.6 | 51 | 2.7 | 90 |
| 21 | 987.2 | 21 | -17.3 | 75 | 2.5 | 140 |
| 22 | 1004.0 | 21 | -14.3 | 72 | 2.2 | 160 |
| 23 | 1008.3 | 21 | -17.7 | 44 | 1.6 | 180 |
| 24 | 1006.9 | 21 | -16.2 | 53 | 2.7 | 90 |
| 25 | 979.6 | 21 | -7.8 | 92 | 22.9 | 40 |
| 26 | 995.3 | 21 | -8.4 | 89 | 8.1 | 30 |
| 27 | 1001.5 | 21 | -7.9 | 89 | 11.1 | 30 |
| 28 | 974.6 | 21 | -5.4 | 94 | 28.0 | 70 |
| 29 | 996.7 | 21 | -10.4 | 88 | 11.5 | 40 |
| 30 | 981.3 | 21 | -12.1 | 70 | 6.0 | 180 |
| 31 | 979.8 | 21 | -11.1 | 78 | 13.2 | 80 |