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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 May 20, Tuesday | 08 | 8.7 | 587.1 | 759.3 | 1.7 | 50 | Calm, no wind | Calm | 70 – 80%. | 5.1 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 60%. | 2000-2500 | 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. | Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus or both, but Cirrocumulus is predominant. | 50.0 | -1.3 | ||||||||||||
05 | 6.3 | 585.4 | 758.8 | 0.9 | 51 | Wind blowing from the north | Light air (1 m/s) | no clouds | -3.1 | ||||||||||||||||||||
02 | 8.8 | 584.5 | 756.0 | 1.3 | 44 | Wind blowing from the north-northeast | Light breeze (2 m/s) | 20–30%. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 20–30%. | 2000-2500 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | No Cirrus, Cirrocumulus or Cirrostratus. | -2.8 | |||||||||||||||
May 19, Monday | 23 | 14.6 | 583.2 | 750.4 | 1.5 | 38 | Wind blowing from the north | Moderate breeze (6 m/s) | 40%. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 20–30%. | 2000-2500 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 0.4 | ||||||||||||||
20 | 19.1 | 581.7 | 745.6 | 0.9 | 27 | Wind blowing from the west-northwest | Moderate breeze (6 m/s) | 90 or more, but not 100% | State of sky on the whole unchanged. | Storm | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 24.6 | Stratocumulus other than Stratocumulus cumulogenitus. | 60%. | 600-1000 | 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. | 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 | -0.4 | ||||||||||
17 | 23.9 | 580.8 | 741.4 | -0.9 | 13 | Wind blowing from the west-northwest | Fresh breeze (9 m/s) | 60%. | Dust or sand raised by wind at or near the station at the time of observation, but no well-developed dust whirl(s) or sand whirl(s), and no duststorm or sandstorm seen; or, in the case of ships, blowing spray at the station. | Storm | 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. | Stratocumulus other than Stratocumulus cumulogenitus. | 50%. | 600-1000 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus uncinus or fibratus, or both, progressively invading the sky; they generally thicken as a whole. | 50.0 | -6.2 | |||||||||||
14 | 23.3 | 581.7 | 742.9 | -1.3 | 13 | Wind blowing from the west | Gentle breeze (4 m/s) | 40%. | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. | 1000-1500 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | No Cirrus, Cirrocumulus or Cirrostratus. | 50.0 | -6.7 | ||||||||||||||
11 | 19.0 | 583.0 | 747.3 | -0.8 | 20 | Wind blowing from the south-west | Light breeze (3 m/s) | 10% or less, but not 0 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 10% or less, but not 0 | 2000-2500 | Altocumulus castellanus or floccus. | No Cirrus, Cirrocumulus or Cirrostratus. | 50.0 | -4.4 | ||||||||||||||
08 | 10.1 | 583.8 | 754.0 | -0.1 | 42 | Calm, no wind | Calm | 20–30%. | 3.7 | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. | 1000-1500 | 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 | -2.2 |