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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 | 20 | -11.2 12 | 604.2 23.79 805.53 805.53 | 765.1 30.12 1020.05 1020.05 | 2.3 0.09 3.07 3.07 | 44 | Wind blowing from the north | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | State of sky on the whole unchanged. | Snow and/or other types of solid precipitation | Cloud covering more than 1/2 of the sky throughout the appropriate period. | -0.5 31 | Stratocumulus other than Stratocumulus cumulogenitus. | 40%. 4/10. 3 oktas | 600-1000 1968-3281 | 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. | No Cirrus, Cirrocumulus or Cirrostratus. | -21.1 -6 | Trace of precipitation Trace of precipitation | 12 | ||||||||
17 | -6.5 20 | 601.9 23.7 802.47 802.47 | 759.1 29.89 1012.05 1012.05 | 1.6 0.06 2.13 2.13 | 54 | Wind blowing from the north-northwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 60%. 6/10. 5 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 40%. 4/10. 3 oktas | 2000-2500 6562-8202 | 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 | -14.3 6 | ||||||||||||||
14 | -1.2 30 | 600.3 23.63 800.33 800.33 | 753.7 29.67 1004.85 1004.85 | -0.5 -0.02 -0.67 -0.67 | 30 | Wind blowing from the south-southwest | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 20–30%. 2/10–3/10. 2 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | no clouds no clouds no clouds | 2500 or more, or no clouds. 8202 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. | 50.0 31.1 | -16.6 2 | ||||||||||||||
11 | -1.4 29 | 600.8 23.65 801 801 | 754.4 29.7 1005.78 1005.78 | -0.3 -0.01 -0.4 -0.4 | 42 | Wind blowing from the west | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 2000-2500 6562-8202 | 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, but the continuous veil does not reach 45 degrees above the horizon. | 50.0 31.1 | -12.7 9 | ||||||||||||||
08 | -1.1 30 | 601.1 23.67 801.4 801.4 | 754.7 29.71 1006.18 1006.18 | -0.4 -0.02 -0.53 -0.53 | 46 | Wind blowing from the west-northwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 50%. 5/10. 4 oktas | -9.1 16 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 2000-2500 6562-8202 | 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. | -11.5 11 | Compact or wet snow (with or without ice) covering at least one-half of the ground but ground not completely covered. | 1 0.4 | ||||||||||||
05 | -8.2 17 | 601.5 23.68 801.93 801.93 | 759.7 29.91 1012.85 1012.85 | -1.9 -0.07 -2.53 -2.53 | 65 | Wind blowing from the west | 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. | 50%. 5/10. 4 oktas | 2000-2500 6562-8202 | 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. | -13.6 8 | |||||||||||||||
02 | -4.7 24 | 603.4 23.76 804.47 804.47 | 759.8 29.91 1012.98 1012.98 | -2.4 -0.09 -3.2 -3.2 | 52 | Wind blowing from the west-southwest | 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. | 60%. 6/10. 5 oktas | 2000-2500 6562-8202 | 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. | -13.1 8 | |||||||||||||||
| December 17, Wednesday | 23 | -5.9 21 | 605.8 23.85 807.67 807.67 | 763.6 30.06 1018.05 1018.05 | -1.8 -0.07 -2.4 -2.4 | 64 | Wind blowing from the north-northeast | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 60%. 6/10. 5 oktas | 2000-2500 6562-8202 | 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. | -11.6 11 | ||||||||||||||
20 | -3.6 26 | 607.6 23.92 810.07 810.07 | 764.4 30.09 1019.12 1019.12 | -1.2 -0.05 -1.6 -1.6 | 56 | Wind blowing from the west-northwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 3.6 38 | Stratocumulus other than Stratocumulus cumulogenitus. | 50%. 5/10. 4 oktas | 1000-1500 3281-4921 | 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. | -11.1 12 | ||||||||||||||