Weather archive in Piarco (airport)
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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 | |
2024 October 30, Wednesday | 10 | 30.7 87 | 757.9 29.84 1010.45 1010.45 | 759.8 29.91 1012.98 1012.98 | 0.5 0.02 0.67 0.67 | 76 | Wind blowing from the south-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 40%. 4/10. 3 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 40%. 4/10. 3 oktas | 600-1000 1968-3281 | 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. | 18.0 11.2 | 26.0 79 | ||||||||||
09 | 29.7 85 | 758.2 29.85 1010.85 1010.85 | 760.0 29.92 1013.25 1013.25 | 1.5 0.06 2 2 | 78 | Calm, no wind | Calm | 40%. 4/10. 3 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cloud covering 1/2 or less of the sky throughout the appropriate period. | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 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. | 18.0 11.2 | 25.5 78 | |||||||||||
08 | 26.0 79 | 757.9 29.84 1010.45 1010.45 | 759.7 29.91 1012.85 1012.85 | 1.6 0.06 2.13 2.13 | 83 | Calm, no wind | Calm | 40%. 4/10. 3 oktas | Mist. | 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. | 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. | 22.4 72 | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 22.9 73 | ||||||||||
07 | 24.3 76 | 757.4 29.82 1009.78 1009.78 | 759.3 29.89 1012.32 1012.32 | 1.0 0.04 1.33 1.33 | 91 | Calm, no wind | Calm | 60%. 6/10. 5 oktas | Mist. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 20.0 12.4 | 22.7 73 | |||||||||||
06 | 23.2 74 | 756.7 29.79 1008.85 1008.85 | 758.6 29.87 1011.38 1011.38 | 0.3 0.01 0.4 0.4 | 89 | Calm, no wind | Calm | 60%. 6/10. 5 oktas | Mist. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 20.0 12.4 | 21.2 70 | |||||||||||
05 | 23.7 75 | 756.3 29.78 1008.32 1008.32 | 758.2 29.85 1010.85 1010.85 | -0.4 -0.02 -0.53 -0.53 | 92 | Calm, no wind | Calm | 60%. 6/10. 5 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 20.0 12.4 | 22.4 72 | |||||||||||
04 | 23.6 74 | 756.4 29.78 1008.45 1008.45 | 758.2 29.85 1010.85 1010.85 | -0.9 -0.04 -1.2 -1.2 | 94 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 22.5 73 | |||||||||||
03 | 24.0 75 | 756.4 29.78 1008.45 1008.45 | 758.3 29.85 1010.98 1010.98 | -1.3 -0.05 -1.73 -1.73 | 92 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 22.6 73 | |||||||||||
02 | 24.3 76 | 756.7 29.79 1008.85 1008.85 | 758.6 29.87 1011.38 1011.38 | -1.4 -0.06 -1.87 -1.87 | 92 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 24.3 76 | 33.1 92 | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 23.0 73 | No precipitation No precipitation | 6 | |||||||
01 | 24.6 76 | 757.3 29.81 1009.65 1009.65 | 759.2 29.89 1012.18 1012.18 | -0.9 -0.04 -1.2 -1.2 | 91 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 23.1 74 | |||||||||||
00 | 24.9 77 | 757.7 29.83 1010.18 1010.18 | 759.6 29.91 1012.72 1012.72 | -0.4 -0.02 -0.53 -0.53 | 92 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 23.5 74 | |||||||||||
October 29, Tuesday | 23 | 24.9 77 | 758.1 29.85 1010.72 1010.72 | 760.0 29.92 1013.25 1013.25 | 0.5 0.02 0.67 0.67 | 93 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | 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. | 18.0 11.2 | 23.6 74 | ||||||||||
22 | 25.7 78 | 758.2 29.85 1010.85 1010.85 | 760.0 29.92 1013.25 1013.25 | 1.3 0.05 1.73 1.73 | 91 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 17.0 10.6 | 24.1 75 | |||||||||||
21 | 26.3 79 | 758.1 29.85 1010.72 1010.72 | 760.0 29.92 1013.25 1013.25 | 1.4 0.06 1.87 1.87 | 88 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 17.0 10.6 | 24.2 76 | |||||||||||
20 | 27.3 81 | 757.6 29.83 1010.05 1010.05 | 759.5 29.9 1012.58 1012.58 | 1.1 0.04 1.47 1.47 | 84 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 24.9 77 | 32.9 91 | 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 | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 18.0 11.2 | 24.4 76 | No precipitation No precipitation | 6 | |||||||
19 | 28.0 82 | 756.9 29.8 1009.12 1009.12 | 758.8 29.87 1011.65 1011.65 | 0.8 0.03 1.07 1.07 | 81 | 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 | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 18.0 11.2 | 24.5 76 | |||||||||||
18 | 28.6 83 | 756.7 29.79 1008.85 1008.85 | 758.5 29.86 1011.25 1011.25 | 0.5 0.02 0.67 0.67 | 78 | Wind blowing from the east-southeast | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 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. | 18.0 11.2 | 24.4 76 | |||||||||||
17 | 30.2 86 | 756.5 29.78 1008.58 1008.58 | 758.4 29.86 1011.12 1011.12 | 0.1 0 0.13 0.13 | 72 | Wind blowing from the south-east | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 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. | 18.0 11.2 | 24.7 76 | |||||||||||
16 | 31.5 89 | 756.1 29.77 1008.05 1008.05 | 758.0 29.84 1010.58 1010.58 | -0.6 -0.02 -0.8 -0.8 | 64 | Wind blowing from the south-east | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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. | 18.0 11.2 | 23.8 75 | |||||||||||
15 | 31.9 89 | 756.2 29.77 1008.18 1008.18 | 758.1 29.85 1010.72 1010.72 | -1.2 -0.05 -1.6 -1.6 | 61 | Wind blowing from the east-southeast | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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. | 18.0 11.2 | 23.4 74 | |||||||||||
14 | 32.0 90 | 756.4 29.78 1008.45 1008.45 | 758.2 29.85 1010.85 1010.85 | -1.7 -0.07 -2.27 -2.27 | 69 | Wind blowing from the south-east | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 24.9 77 | 33.1 92 | 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. | 18.0 11.2 | 25.5 78 | No precipitation No precipitation | 6 | |||||||
13 | 32.3 90 | 756.7 29.79 1008.85 1008.85 | 758.5 29.86 1011.25 1011.25 | -1.9 -0.07 -2.53 -2.53 | 69 | Wind blowing from the south | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 18.0 11.2 | 25.8 78 | |||||||||||
12 | 32.6 91 | 757.4 29.82 1009.78 1009.78 | 759.3 29.89 1012.32 1012.32 | -1.4 -0.06 -1.87 -1.87 | 63 | Wind blowing from the south-southeast | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 40%. 4/10. 3 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrostratus not progressively invading the sky and not entirely covering it. | 18.0 11.2 | 24.6 76 | |||||||||||
11 | 32.2 90 | 758.1 29.85 1010.72 1010.72 | 760.0 29.92 1013.25 1013.25 | -0.3 -0.01 -0.4 -0.4 | 65 | Wind blowing from the south-east | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 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. | 18.0 11.2 | 24.8 77 | |||||||||||
10 | 31.0 88 | 758.6 29.87 1011.38 1011.38 | 760.5 29.94 1013.92 1013.92 | 0.7 0.03 0.93 0.93 | 76 | Wind blowing from the south-southeast | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | Widespread dust in suspension in the air, not raised by wind at or near the station at the time of observation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 20–30%. 2/10–3/10. 2 oktas | 300-600 984-1968 | 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. | 18.0 11.2 | 26.3 79 |