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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 31, Wednesday | 21 | -27.0 -17 | 693.3 27.3 924.32 924.32 | 780.2 30.72 1040.18 1040.18 | 79 | Wind blowing from the east-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | no clouds no clouds no clouds | -26.4 -16 | 50.0 31.1 | -29.5 -21 | Trace of precipitation Trace of precipitation | 12 | ||||||||||||||||
15 | -26.4 -16 | 691.3 27.22 921.66 921.66 | 777.8 30.62 1036.98 1036.98 | 74 | Wind blowing from the north-northeast | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 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 (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 | -29.6 -21 | |||||||||||||||
09 | -29.3 -21 | 691.7 27.23 922.19 922.19 | 779.4 30.69 1039.11 1039.11 | 79 | Wind blowing from the east-southeast | 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. | -30.6 -23 | 50.0 31.1 | -31.8 -25 | Trace of precipitation Trace of precipitation | 12 | Even layer of loose dry snow covering ground completely. | 23 9.1 | ||||||||||||
03 | -30.6 -23 | 691.5 27.22 921.92 921.92 | 779.6 30.69 1039.38 1039.38 | 75 | Wind blowing from the north-east | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 20–30%. 2/10–3/10. 2 oktas | Slight or moderate drifting snow generally low (below eye level). | Blizzard | 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. | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus or both, but Cirrocumulus is predominant. | 50.0 31.1 | -33.6 -28 | |||||||||||
| December 30, Tuesday | 21 | -29.9 -22 | 691.2 27.21 921.52 921.52 | 779.1 30.67 1038.71 1038.71 | 74 | Wind blowing from the north-northeast | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 60%. 6/10. 5 oktas | Slight or moderate drifting snow generally low (below eye level). | Shower(s). | Blizzard | -28.5 -19 | Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus. | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | 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 | -33.0 -27 | 0.5 0.02 | 12 | ||||||
