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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 12, Friday | 23 | -27.0 -17 | 708.1 27.88 944.06 944.06 | 766.4 30.17 1021.78 1021.78 | 1.4 0.06 1.87 1.87 | 78 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | Snow and/or other types of solid precipitation | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Stratocumulus other than Stratocumulus cumulogenitus. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | Altocumulus translucidus at a single level. | Cirrostratus covering the whole sky. | 10.0 6.2 | -29.7 -21 | ||||||||||
20 | -30.2 -22 | 706.7 27.82 942.19 942.19 | 765.7 30.15 1020.85 1020.85 | 1.1 0.04 1.47 1.47 | 76 | Wind blowing from the south-west | 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 | Intermittent fall of snowflakes, slight at time of observation. | Snow and/or other types of solid precipitation | Cloud covering more than 1/2 of the sky throughout the appropriate period. | -26.2 -15 | 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. | 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 | -33.1 -28 | Trace of precipitation Trace of precipitation | 12 | ||||||||
17 | -33.2 -28 | 705.6 27.78 940.72 940.72 | 765.3 30.13 1020.32 1020.32 | 1.4 0.06 1.87 1.87 | 74 | Calm, no wind | Calm | 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. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 50.0 31.1 | -36.3 -33 | ||||||||||||||
14 | -26.9 -16 | 704.2 27.72 938.86 938.86 | 762.1 30 1016.05 1016.05 | 0.3 0.01 0.4 0.4 | 77 | Calm, no wind | Calm | 40%. 4/10. 3 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. | Altocumulus translucidus at a single level. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 50.0 31.1 | -29.7 -21 | ||||||||||||||
11 | -30.4 -23 | 703.9 27.71 938.46 938.46 | 762.7 30.03 1016.85 1016.85 | 0.9 0.04 1.2 1.2 | 75 | Calm, no wind | Calm | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 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. | Stratocumulus other than Stratocumulus cumulogenitus. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | Altocumulus translucidus at a single level. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 50.0 31.1 | -33.4 -28 | |||||||||||
08 | -30.5 -23 | 703.0 27.68 937.26 937.26 | 761.8 29.99 1015.65 1015.65 | 0.8 0.03 1.07 1.07 | 75 | Calm, no wind | Calm | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Continuous fall of snowflakes, slight at time of observation. | Snow and/or other types of solid precipitation | Cloud covering more than 1/2 of the sky throughout the appropriate period. | -38.0 -36 | Stratocumulus other than Stratocumulus cumulogenitus. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | 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; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered. | 20.0 12.4 | -33.5 -28 | Trace of precipitation Trace of precipitation | 12 | Uneven layer of loose dry snow covering ground completely. | 31 12.2 | ||||||
05 | -31.6 -25 | 702.2 27.65 936.19 936.19 | 761.2 29.97 1014.85 1014.85 | -0.4 -0.02 -0.53 -0.53 | 75 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | Continuous fall of snowflakes, slight at time of observation. | Snow and/or other types of solid precipitation | 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. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 100%. 10/10. 8 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. | 20.0 12.4 | -34.6 -30 | ||||||||||||
02 | -36.9 -34 | 702.6 27.66 936.72 936.72 | 763.0 30.04 1017.25 1017.25 | 0.1 0 0.13 0.13 | 71 | Calm, no wind | Calm | 60%. 6/10. 5 oktas | Diamond dust (with or without fog). | Snow and/or other types of solid precipitation | 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. | 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 at a single level. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 50.0 31.1 | -40.2 -40 | |||||||||||
| December 11, Thursday | 23 | -35.4 -32 | 702.5 27.66 936.59 936.59 | 762.6 30.02 1016.72 1016.72 | 0.6 0.02 0.8 0.8 | 72 | Wind blowing from the south-southeast | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 40%. 4/10. 3 oktas | Diamond dust (with or without fog). | Snow and/or other types of solid precipitation | 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. | 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 fibratus, sometimes uncinus, not progressively invading the sky. | 50.0 31.1 | -38.6 -37 | ||||||||||