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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 | 16 | 5.7 42 | 647.5 25.49 863.26 863.26 | 76 | Wind blowing from the west-southwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | No significant weather observed. | No significant weather observed. | Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus. | 70 – 80%. 7/10 – 8/10. 6 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 1.8 35 | |||||||||||||
15 | 6.1 43 | 647.5 25.49 863.26 863.26 | -0.3 -0.01 -0.4 -0.4 | 74 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | No significant weather observed. | No significant weather observed. | Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus. | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 1.8 35 | |||||||||||||
12 | 7.1 45 | 647.8 25.5 863.66 863.66 | 0.4 0.02 0.53 0.53 | 66 | Wind blowing from the west-southwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | No significant weather observed. | No significant weather observed. | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 20.0 12.4 | 1.1 34 | |||||||||||||
11 | 6.7 44 | 647.8 25.5 863.66 863.66 | 67 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | No significant weather observed. | No significant weather observed. | 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. | Cirrostratus not progressively invading the sky and not entirely covering it. | 20.0 12.4 | 0.9 34 | ||||||||||||||
10 | 5.2 41 | 647.5 25.49 863.26 863.26 | 73 | Wind blowing from the south-southwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | No significant weather observed. | No significant weather observed. | 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 (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. | 20.0 12.4 | 0.7 33 | ||||||||||||||
09 | 4.9 41 | 647.4 25.49 863.13 863.13 | 0.5 0.02 0.67 0.67 | 69 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | No significant weather observed. | No significant weather observed. | 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 (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. | 20.0 12.4 | -0.3 31 | |||||||||||||
06 | 4.1 39 | 646.9 25.47 862.46 862.46 | 0.0 0 0 0 | 89 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | No significant weather observed. | No significant weather observed. | 20.0 12.4 | 2.4 36 | |||||||||||||||||||
05 | 4.8 41 | 646.9 25.47 862.46 862.46 | 0.1 0 0.13 0.13 | 85 | Wind blowing from the south-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | No significant weather observed. | No significant weather observed. | 20.0 12.4 | 2.4 36 | |||||||||||||||||||
04 | 5.5 42 | 647.1 25.48 862.73 862.73 | 0.4 0.02 0.53 0.53 | 80 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | No significant weather observed. | No significant weather observed. | 20.0 12.4 | 2.3 36 | |||||||||||||||||||
03 | 5.4 42 | 646.9 25.47 862.46 862.46 | 0.3 0.01 0.4 0.4 | 75 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | No significant weather observed. | No significant weather observed. | 20.0 12.4 | 1.3 34 | |||||||||||||||||||
02 | 5.2 41 | 646.8 25.46 862.33 862.33 | 0.4 0.02 0.53 0.53 | 67 | Wind blowing from the south-east | Calm | no clouds no clouds no clouds | No significant weather observed. | No significant weather observed. | 20.0 12.4 | -0.4 31 | No precipitation No precipitation | 6 | ||||||||||||||||
01 | 5.6 42 | 646.7 25.46 862.2 862.2 | 0.4 0.02 0.53 0.53 | 55 | Wind blowing from the south-southwest | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | no clouds no clouds no clouds | No significant weather observed. | No significant weather observed. | 20.0 12.4 | -2.8 27 | ||||||||||||||||||
00 | 5.7 42 | 646.6 25.46 862.06 862.06 | 0.6 0.02 0.8 0.8 | 46 | Wind blowing from the south-southwest | Calm | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | No significant weather observed. | No significant weather observed. | 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. | 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. | 20.0 12.4 | -5.1 23 | |||||||||||||
| December 17, Wednesday | 23 | 6.3 43 | 646.4 25.45 861.8 861.8 | 0.5 0.02 0.67 0.67 | 43 | Wind blowing from the west-northwest | Calm | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | No significant weather observed. | No significant weather observed. | 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. | 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. | 20.0 12.4 | -5.6 22 | ||||||||||||
22 | 6.1 43 | 646.3 25.44 861.66 861.66 | 30 | Wind blowing from the south-west | Calm | 40%. 4/10. 3 oktas | No significant weather observed. | No significant weather observed. | 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. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | -10.4 13 | ||||||||||||||
21 | 6.3 43 | 646.0 25.43 861.26 861.26 | 0.1 0 0.13 0.13 | 26 | Wind blowing from the west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | No significant weather observed. | No significant weather observed. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 60%. 6/10. 5 oktas | 2500 or more, or no clouds. 8202 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. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | -12.1 10 | |||||||||||||
20 | 6.0 43 | 645.9 25.43 861.13 861.13 | 0.1 0 0.13 0.13 | 27 | Wind blowing from the west-southwest | Calm | 50%. 5/10. 4 oktas | No significant weather observed. | No significant weather observed. | 4.7 40 | 10.9 52 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | -11.6 11 | No precipitation No precipitation | 12 | Dry (without cracks, no appreciable amount of dust or loose sand) | ||||||||
18 | 5.3 42 | 645.9 25.43 861.13 861.13 | 25 | Wind blowing from the east-northeast | Calm | 60%. 6/10. 5 oktas | No significant weather observed. | No significant weather observed. | 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. | Altocumulus translucidus at a single level. | Cirrostratus not progressively invading the sky and not entirely covering it. | 20.0 12.4 | -13.3 8 | ||||||||||||||
17 | 6.2 43 | 645.8 25.43 861 861 | 0.1 0 0.13 0.13 | 27 | Wind blowing from the north | Calm | 70 – 80%. 7/10 – 8/10. 6 oktas | No significant weather observed. | No significant weather observed. | 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. | Cirrostratus not progressively invading the sky and not entirely covering it. | 20.0 12.4 | -11.4 11 | |||||||||||||
16 | 7.8 46 | 645.7 25.42 860.86 860.86 | 0.0 0 0 0 | 28 | Wind blowing from the east | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | No significant weather observed. | No significant weather observed. | 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. | Cirrostratus not progressively invading the sky and not entirely covering it. | 20.0 12.4 | -9.7 15 | |||||||||||||
