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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 | 23 | -10.2 14 | 660.1 25.99 880.06 880.06 | 769.4 30.29 1025.78 1025.78 | 0.6 0.02 0.8 0.8 | 46 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | -19.6 -3 | |||||||||||||||||||
20 | -6.9 20 | 659.5 25.96 879.26 879.26 | 767.2 30.2 1022.85 1022.85 | 1.4 0.06 1.87 1.87 | 44 | Wind blowing from the south-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | State of sky on the whole unchanged. | Blizzard | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 1.4 35 | -17.1 1 | ||||||||||||||||
17 | 0.2 32 | 658.1 25.91 877.39 877.39 | 762.6 30.02 1016.72 1016.72 | 0.8 0.03 1.07 1.07 | 35 | Wind blowing from the north-west | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | no clouds no clouds no clouds | Duststorm or sandstorm within sight at the time of observation, or at the station during the preceding hour. | Storm | Cloud covering 1/2 or less of the sky throughout the appropriate period. | 50.0 31.1 | -13.5 8 | ||||||||||||||||
14 | -1.2 30 | 657.3 25.88 876.33 876.33 | 762.3 30.01 1016.32 1016.32 | -0.6 -0.02 -0.8 -0.8 | 49 | Wind blowing from the west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 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 spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 50.0 31.1 | -10.6 13 | ||||||||||||||
11 | -10.2 14 | 657.9 25.9 877.13 877.13 | 766.8 30.19 1022.32 1022.32 | -0.1 -0 -0.13 -0.13 | 81 | Wind blowing from the east | 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 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altocumulus castellanus or floccus. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 50.0 31.1 | -12.8 9 | ||||||||||||||
08 | -11.6 11 | 658.0 25.91 877.26 877.26 | 767.6 30.22 1023.38 1023.38 | -0.3 -0.01 -0.4 -0.4 | 83 | Wind blowing from the north-east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 60%. 6/10. 5 oktas | -14.3 6 | 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 spissatus cumulonimbogenitus. | -13.9 7 | ||||||||||||||
05 | -12.3 10 | 658.3 25.92 877.66 877.66 | 768.1 30.24 1024.05 1024.05 | -1.0 -0.04 -1.33 -1.33 | 80 | Wind blowing from the south-southeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 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 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 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 uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | -15.0 5 | |||||||||||||||
02 | -13.8 7 | 659.3 25.96 878.99 878.99 | 770.0 30.31 1026.58 1026.58 | -1.1 -0.04 -1.47 -1.47 | 80 | Wind blowing from the east-northeast | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 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 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. | -16.5 2 | |||||||||||||||