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Date / Local time | T | Po | P | Pa | U | DD | Ff | ff10 | ff3 | N | WW | W1 | W2 | Tn | Tx | Cl | Nh | H | Cm | Ch | VV | Td | RRR | tR | E | Tg | E' | sss | |
2025 April 4, Friday | 16 | 32.7 | 717.5 | 757.1 | -2.9 | 52 | variable wind direction | Light breeze (2 m/s) | 50%. | Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period. | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 20–30%. | 600-1000 | Altocumulus translucidus at a single level. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 16.0 | 21.6 | No precipitation | 3 | ||||||||
13 | 30.2 | 720.4 | 760.1 | -2.1 | 60 | variable wind direction | Light breeze (3 m/s) | 70 – 80%. | Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 40%. | 600-1000 | Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 16.0 | 21.6 | No precipitation | 6 | |||||||||
10 | 26.7 | 722.5 | 762.3 | 1.2 | 76 | Wind blowing from the north-northwest | Light breeze (2 m/s) | 90 or more, but not 100% | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 20–30%. | 600-1000 | Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole, but the continuous veil does not reach 45 degrees above the horizon. | 18.0 | 22.2 | No precipitation | 3 | ||||||||||||
07 | 24.8 | 721.3 | 761.0 | 87 | variable wind direction | Light air (1 m/s) | 100%. | State of sky on the whole unchanged. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 21.7 | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 10% or less, but not 0 | 600-1000 | Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus. | 18.0 | 22.5 | No precipitation | 24 | Dry (without cracks, no appreciable amount of dust or loose sand) |