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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 18, Friday | 15 | 23.8 | 751.7 | 762.6 | 36 | Wind blowing from the west-northwest | Light air (1 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. | 70 – 80%. | 1000-1500 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 10.0 | 7.6 | ||||||||||||||
12 | 23.0 | 752.5 | 763.4 | 33 | Wind blowing from the west | Light air (1 m/s) | 90 or more, but not 100% | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | no clouds | 2500 or more, or no clouds. | No Altocumulus, Altostratus or Nimbostratus. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 10.0 | 6.0 | |||||||||||||||
09 | 17.5 | 753.2 | 764.3 | 51 | Wind blowing from the west-southwest | Light air (1 m/s) | 90 or more, but not 100% | 14.1 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. | 2500 or more, or no clouds. | 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. | 10.0 | 7.2 | No precipitation | 12 | Surface of ground moist. | 9.0 | ||||||||||
06 | 14.1 | 753.5 | 764.7 | 63 | Calm, no wind | Calm | 20–30%. | 14.1 | Stratocumulus other than Stratocumulus cumulogenitus. | 20–30%. | 600-1000 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 10.0 | 7.1 | No precipitation | 12 | ||||||||||||
03 | 14.6 | 754.0 | 765.2 | 68 | Wind blowing from the west | Light air (1 m/s) | 100%. | Stratocumulus other than Stratocumulus cumulogenitus. | 100%. | 300-600 | 10.0 | 8.8 | |||||||||||||||||
00 | 16.4 | 754.4 | 765.6 | 51 | Wind blowing from the west | Light air (1 m/s) | 90 or more, but not 100% | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 90 or more, but not 100% | 2500 or more, or no clouds. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | No Cirrus, Cirrocumulus or Cirrostratus. | 10.0 | 6.3 | |||||||||||||||
April 17, Thursday | 21 | 17.2 | 754.7 | 765.8 | 47 | Wind blowing from the west | Light air (1 m/s) | 90 or more, but not 100% | 18.6 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 90 or more, but not 100% | 2500 or more, or no clouds. | 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. | No Cirrus, Cirrocumulus or Cirrostratus. | 10.0 | 5.8 | No precipitation | 12 | |||||||||||
18 | 18.4 | 755.1 | 766.2 | 47 | Wind blowing from the west | Light air (1 m/s) | 100%. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 100%. | 2500 or more, or no clouds. | Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole. | 10.0 | 6.9 | Trace of precipitation | 12 | ||||||||||||||
15 | 17.9 | 756.7 | 767.8 | 47 | Wind blowing from the west | Light air (1 m/s) | 90 or more, but not 100% | State of sky on the whole unchanged. | Rain. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 40%. | 1000-1500 | 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. | Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus or both, but Cirrocumulus is predominant. | 10.0 | 6.4 |