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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 December 18, Thursday | 11 | -11.9 11 | 640.5 25.22 853.93 853.93 | 768.1 30.24 1024.05 1024.05 | 2.3 0.09 3.07 3.07 | 68 | Wind blowing from the west-northwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 50%. 5/10. 4 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. 4/10. 3 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 50.0 31.1 | -16.6 2 | |||||||||||||
08 | -11.8 11 | 638.2 25.13 850.86 850.86 | 765.3 30.13 1020.32 1020.32 | 1.7 0.07 2.27 2.27 | 68 | Wind blowing from the north-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 20–30%. 2/10–3/10. 2 oktas | -12.5 10 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 2500 or more, or no clouds. 8202 or more, or no clouds. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 50.0 31.1 | -16.5 2 | Even layer of compact or wet snow covering ground completely. | 8 3.1 | |||||||||||
05 | -11.4 11 | 636.5 25.06 848.6 848.6 | 763.1 30.04 1017.38 1017.38 | -0.4 -0.02 -0.53 -0.53 | 79 | Wind blowing from the east-northeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 60%. 6/10. 5 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. 4/10. 3 oktas | 2500 or more, or no clouds. 8202 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. | Cirrostratus not progressively invading the sky and not entirely covering it. | -14.3 6 | |||||||||||||||
02 | -9.5 15 | 636.9 25.07 849.13 849.13 | 762.5 30.02 1016.58 1016.58 | -0.7 -0.03 -0.93 -0.93 | 81 | Wind blowing from the east-northeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 100%. 10/10. 8 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altostratus opacus or Nimbostratus. | -12.2 10 | ||||||||||||||||
| December 17, Wednesday | 23 | -9.3 15 | 637.6 25.1 850.06 850.06 | 763.3 30.05 1017.65 1017.65 | -1.2 -0.05 -1.6 -1.6 | 80 | Wind blowing from the east | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 100%. 10/10. 8 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 100%. 10/10. 8 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altostratus opacus or Nimbostratus. | -12.1 10 | |||||||||||||||
20 | -8.9 16 | 638.8 25.15 851.66 851.66 | 764.5 30.1 1019.25 1019.25 | -1.2 -0.05 -1.6 -1.6 | 79 | Wind blowing from the east-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 oktas | -4.0 25 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 2500 or more, or no clouds. 8202 or more, or no clouds. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 50.0 31.1 | -11.9 11 | |||||||||||||
17 | -4.5 24 | 640.0 25.2 853.26 853.26 | 763.8 30.07 1018.32 1018.32 | -1.9 -0.07 -2.53 -2.53 | 65 | Wind blowing from the east | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 60%. 6/10. 5 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 50.0 31.1 | -10.1 14 | ||||||||||||||
14 | -4.4 24 | 641.9 25.27 855.8 855.8 | 766.0 30.16 1021.25 1021.25 | -1.9 -0.07 -2.53 -2.53 | 64 | Wind blowing from the east-southeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. 4/10. 3 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altocumulus translucidus at a single level. | Cirrostratus not progressively invading the sky and not entirely covering it. | 50.0 31.1 | -10.2 14 | ||||||||||||||
11 | -12.6 9 | 643.8 25.35 858.33 858.33 | 772.5 30.41 1029.92 1029.92 | -1.0 -0.04 -1.33 -1.33 | 35 | Wind blowing from the east-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 100%. 10/10. 8 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altostratus opacus or Nimbostratus. | 50.0 31.1 | -24.9 -13 | |||||||||||||||