| Tahun Data | : | 1998 |
| Nama Stasiun | : | TRMM-0721 |
| Lokasi Stasiun | : | Desa Unggan, Kecamatan Sumpur Kudus, Sijunjung, Provinsi Sumatera Barat |
| Longitude | : | 100.875000 |
| Latitude | : | -0.375000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.000 | 5.752 | 0.000 | 13.131 | 1.717 | 57.994 | 0.000 | 0.000 | 0.000 | 3.318 | 10.815 | 2.610 |
| 2 | 0.000 | 10.776 | 0.000 | 10.170 | 0.000 | 0.000 | 1.786 | 12.002 | 21.005 | 1.781 | 22.675 | 22.430 |
| 3 | 9.673 | 0.000 | 0.000 | 6.083 | 9.634 | 13.256 | 1.437 | 0.000 | 10.472 | 19.873 | 0.000 | 2.447 |
| 4 | 9.643 | 6.272 | 20.136 | 3.186 | 0.000 | 12.007 | 0.842 | 14.370 | 0.000 | 4.436 | 56.196 | 53.547 |
| 5 | 3.334 | 30.353 | 0.000 | 0.000 | 13.820 | 1.020 | 24.353 | 18.402 | 3.329 | 7.404 | 3.725 | 16.884 |
| 6 | 0.000 | 0.000 | 1.827 | 15.062 | 0.242 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.121 |
| 7 | 0.000 | 0.000 | 15.382 | 0.000 | 0.000 | 10.528 | 5.339 | 21.123 | 22.034 | 0.000 | 0.000 | 25.244 |
| 8 | 0.000 | 0.000 | 5.556 | 0.000 | 17.523 | 0.000 | 3.265 | 69.673 | 4.389 | 52.948 | 1.372 | 5.628 |
| 9 | 14.960 | 0.000 | 32.554 | 0.000 | 17.738 | 24.778 | 33.450 | 6.369 | 16.465 | 0.000 | 1.797 | 0.000 |
| 10 | 0.000 | 0.000 | 14.860 | 2.800 | 3.408 | 0.000 | 5.380 | 0.000 | 0.000 | 5.972 | 9.148 | 26.182 |
| 11 | 14.119 | 0.000 | 3.878 | 13.935 | 8.265 | 0.000 | 7.248 | 0.000 | 4.903 | 17.707 | 7.123 | 40.456 |
| 12 | 0.000 | 0.000 | 32.722 | 0.933 | 12.774 | 0.000 | 31.827 | 73.129 | 1.029 | 9.814 | 0.000 | 1.264 |
| 13 | 14.930 | 8.628 | 2.685 | 59.829 | 18.999 | 2.524 | 0.000 | 66.697 | 7.688 | 22.388 | 0.359 | 4.812 |
| 14 | 0.000 | 0.104 | 4.997 | 0.000 | 22.354 | 25.364 | 0.000 | 17.506 | 31.508 | 22.562 | 0.000 | 7.586 |
| 15 | 28.929 | 11.434 | 2.480 | 6.984 | 5.260 | 0.000 | 10.986 | 38.213 | 4.449 | 0.000 | 4.313 | 2.447 |
| 16 | 33.615 | 6.583 | 6.955 | 0.000 | 0.000 | 1.300 | 2.526 | 8.545 | 8.263 | 0.000 | 0.000 | 0.000 |
| 17 | 9.523 | 6.861 | 10.124 | 0.000 | 0.000 | 21.209 | 41.006 | 9.921 | 20.430 | 0.559 | 4.313 | 0.000 |
| 18 | 21.509 | 0.000 | 4.176 | 0.000 | 1.261 | 0.000 | 13.224 | 22.371 | 0.605 | 0.000 | 2.712 | 0.000 |
| 19 | 55.334 | 2.772 | 11.560 | 2.285 | 2.469 | 0.000 | 48.521 | 3.072 | 6.840 | 0.000 | 0.000 | 3.059 |
| 20 | 0.000 | 4.400 | 0.000 | 1.480 | 0.000 | 11.038 | 0.698 | 21.123 | 0.000 | 2.061 | 0.000 | 0.000 |
| 21 | 0.000 | 64.656 | 13.518 | 0.000 | 0.000 | 0.000 | 13.655 | 26.947 | 67.162 | 7.404 | 4.901 | 0.000 |
| 22 | 0.000 | 32.744 | 0.410 | 0.000 | 21.549 | 0.000 | 4.702 | 79.818 | 0.000 | 2.235 | 0.000 | 4.364 |
| 23 | 0.000 | 17.013 | 8.073 | 39.521 | 8.721 | 8.157 | 5.770 | 5.537 | 19.068 | 25.880 | 0.000 | 0.000 |
| 24 | 0.000 | 0.000 | 3.804 | 0.000 | 0.000 | 11.012 | 25.749 | 2.336 | 17.282 | 8.836 | 0.000 | 5.098 |
| 25 | 7.330 | 3.326 | 4.083 | 1.062 | 0.000 | 0.000 | 0.000 | 54.439 | 17.585 | 20.921 | 1.046 | 18.678 |
| 26 | 0.000 | 3.811 | 0.000 | 0.000 | 0.000 | 0.000 | 3.121 | 13.058 | 0.000 | 25.810 | 0.000 | 0.000 |
| 27 | 0.000 | 0.000 | 17.358 | 0.000 | 1.261 | 0.000 | 7.782 | 7.553 | 4.449 | 1.781 | 0.784 | 1.958 |
| 28 | 7.630 | 0.000 | 3.263 | 7.563 | 10.680 | 0.000 | 2.012 | 29.540 | 0.000 | 15.158 | 0.000 | 0.000 |
| 29 | 27.367 | - | 7.700 | 0.000 | 4.133 | 0.000 | 1.088 | 0.960 | 1.755 | 18.161 | 36.724 | 29.649 |
| 30 | 9.373 | - | 22.094 | 0.000 | 0.000 | 10.069 | 0.000 | 11.393 | 5.176 | 28.604 | 0.000 | 17.700 |
| 31 | 5.107 | - | 0.000 | - | 0.912 | - | 0.862 | 4.513 | - | 27.207 | - | 20.554 |
| Total | 272.38 | 215.49 | 250.20 | 184.02 | 182.72 | 210.26 | 296.63 | 638.61 | 295.89 | 352.82 | 168.00 | 314.72 |
| Hari Hujan | 16.00 | 16.00 | 24.00 | 15.00 | 20.00 | 14.00 | 25.00 | 26.00 | 22.00 | 24.00 | 16.00 | 22.00 |
| Max | 55.334 | 64.656 | 32.722 | 59.829 | 22.354 | 57.994 | 48.521 | 79.818 | 67.162 | 52.948 | 56.196 | 53.547 |
| Avg | 8.79 | 7.70 | 8.07 | 6.13 | 5.89 | 7.01 | 9.57 | 20.60 | 9.86 | 11.38 | 5.60 | 10.15 |
Berdasarkan data hujan TRMM di Grid TRMM-0721, yang terletak di Desa Unggan, Kecamatan Sumpur Kudus, Sijunjung, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 1998 adalah sebesar 3,381.72 mm. Dengan jumlah hari hujan tahunan adalah 240 hari (65.75%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 79.82 mm yang terjadi pada tanggal 22 Agustus 1998.
