| Tahun Data | : | 1999 |
| Nama Stasiun | : | TRMM-0550 |
| Lokasi Stasiun | : | Desa Desa Baru, Kecamatan Ranah Batahan, Pasaman Barat, Provinsi Sumatera Barat |
| Longitude | : | 99.375000 |
| Latitude | : | 0.375000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 12.069 | 0.000 | 18.033 | 0.000 | 7.527 | 0.000 | 0.208 | 0.000 | 1.805 | 2.552 | 8.412 | 0.000 |
| 2 | 11.628 | 8.144 | 29.796 | 0.000 | 0.000 | 0.000 | 1.204 | 0.000 | 95.607 | 57.390 | 0.000 | 34.025 |
| 3 | 20.658 | 5.833 | 71.001 | 0.000 | 4.508 | 1.146 | 5.563 | 20.628 | 10.457 | 0.000 | 0.000 | 15.882 |
| 4 | 21.098 | 6.818 | 0.000 | 24.373 | 14.793 | 0.000 | 26.901 | 0.000 | 50.740 | 21.380 | 4.279 | 13.979 |
| 5 | 0.000 | 19.167 | 16.999 | 23.824 | 8.232 | 0.000 | 0.000 | 1.490 | 0.000 | 5.501 | 2.212 | 31.646 |
| 6 | 0.000 | 14.621 | 0.000 | 21.421 | 1.509 | 0.000 | 8.884 | 13.031 | 0.000 | 17.353 | 6.309 | 0.000 |
| 7 | 6.827 | 21.288 | 0.000 | 10.642 | 7.064 | 1.214 | 0.000 | 5.522 | 0.000 | 7.599 | 4.097 | 27.482 |
| 8 | 0.000 | 5.796 | 24.044 | 0.000 | 0.000 | 38.655 | 1.910 | 0.000 | 1.318 | 25.746 | 0.000 | 0.000 |
| 9 | 2.819 | 0.417 | 4.460 | 0.000 | 2.697 | 0.000 | 4.691 | 4.500 | 7.592 | 0.000 | 0.000 | 5.651 |
| 10 | 0.000 | 0.000 | 2.941 | 0.000 | 2.274 | 0.382 | 0.457 | 3.477 | 6.504 | 9.017 | 6.781 | 0.000 |
| 11 | 27.661 | 12.235 | 1.939 | 3.158 | 18.597 | 5.911 | 3.072 | 8.532 | 0.000 | 24.612 | 43.948 | 0.000 |
| 12 | 0.573 | 21.099 | 12.313 | 0.000 | 0.000 | 1.056 | 0.000 | 10.373 | 0.430 | 13.327 | 36.877 | 4.937 |
| 13 | 51.842 | 13.864 | 12.636 | 0.000 | 0.000 | 6.495 | 2.948 | 5.201 | 2.922 | 7.202 | 0.000 | 0.000 |
| 14 | 2.423 | 0.000 | 28.504 | 0.000 | 5.817 | 3.776 | 21.546 | 0.964 | 7.019 | 68.279 | 14.830 | 20.463 |
| 15 | 9.338 | 8.144 | 0.873 | 0.000 | 4.730 | 0.000 | 1.661 | 2.776 | 0.000 | 15.935 | 0.000 | 4.223 |
| 16 | 0.000 | 0.000 | 5.559 | 0.000 | 13.263 | 1.910 | 2.948 | 18.817 | 2.206 | 14.007 | 1.813 | 2.082 |
| 17 | 8.016 | 1.705 | 11.537 | 10.573 | 0.342 | 0.000 | 0.000 | 0.000 | 44.237 | 1.191 | 9.972 | 45.565 |
| 18 | 2.599 | 4.924 | 9.566 | 6.728 | 5.535 | 13.372 | 0.000 | 0.000 | 0.000 | 59.205 | 14.577 | 19.451 |
| 19 | 7.268 | 34.622 | 6.011 | 0.000 | 1.369 | 0.000 | 0.000 | 16.625 | 21.603 | 49.621 | 0.979 | 0.000 |
| 20 | 17.266 | 13.864 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 30.037 | 20.628 | 41.568 | 17.586 | 2.082 |
| 21 | 8.545 | 0.000 | 0.517 | 0.000 | 5.092 | 14.990 | 0.000 | 4.675 | 15.958 | 0.000 | 24.838 | 5.473 |
| 22 | 19.821 | 4.621 | 0.000 | 0.000 | 3.844 | 46.027 | 0.000 | 7.012 | 0.000 | 8.790 | 0.000 | 6.722 |
| 23 | 27.353 | 31.894 | 0.000 | 0.000 | 2.214 | 0.000 | 0.000 | 1.402 | 6.446 | 12.249 | 7.470 | 19.332 |
| 24 | 6.783 | 14.811 | 0.000 | 0.000 | 17.792 | 17.799 | 0.000 | 3.214 | 0.000 | 0.510 | 23.896 | 34.917 |
| 25 | 1.542 | 54.319 | 0.000 | 0.000 | 0.000 | 6.517 | 0.000 | 37.604 | 0.000 | 2.268 | 15.737 | 9.101 |
| 26 | 0.000 | 36.364 | 31.703 | 0.000 | 0.000 | 0.247 | 0.000 | 0.000 | 12.721 | 0.000 | 11.603 | 0.000 |
| 27 | 7.312 | 22.197 | 3.393 | 8.857 | 0.000 | 0.000 | 0.000 | 0.000 | 25.041 | 2.552 | 24.476 | 6.008 |
| 28 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 2.652 | 0.000 | 15.018 | 6.991 | 16.559 | 27.739 | 0.000 |
| 29 | 0.000 | - | 0.000 | 29.248 | 0.000 | 0.247 | 0.000 | 0.000 | 40.168 | 25.009 | 12.038 | 9.339 |
| 30 | 0.000 | - | 4.460 | 6.728 | 0.000 | 0.000 | 2.864 | 0.000 | 16.216 | 1.134 | 82.347 | 20.403 |
| 31 | 0.000 | - | 17.548 | - | 0.000 | - | 3.944 | 0.993 | - | 24.669 | - | 4.045 |
| Total | 273.44 | 356.75 | 313.83 | 145.55 | 127.20 | 162.40 | 88.80 | 211.89 | 396.61 | 535.23 | 402.82 | 342.81 |
| Hari Hujan | 21.00 | 22.00 | 21.00 | 10.00 | 19.00 | 17.00 | 15.00 | 21.00 | 21.00 | 27.00 | 23.00 | 22.00 |
| Max | 51.842 | 54.319 | 71.001 | 29.248 | 18.597 | 46.027 | 26.901 | 37.604 | 95.607 | 68.279 | 82.347 | 45.565 |
| Avg | 8.82 | 12.74 | 10.12 | 4.85 | 4.10 | 5.41 | 2.86 | 6.84 | 13.22 | 17.27 | 13.43 | 11.06 |
Berdasarkan data hujan TRMM di Grid TRMM-0550, yang terletak di Desa Desa Baru, Kecamatan Ranah Batahan, Pasaman Barat, Provinsi Sumatera Barat, curah hujan tahunan yang terjadi pada tahun 1999 adalah sebesar 3,357.32 mm. Dengan jumlah hari hujan tahunan adalah 239 hari (65.48%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 95.61 mm yang terjadi pada tanggal 2 September 1999.
