1 |
Highest wind speed gusts greater than 11.5 m/s
|
|
stable
|
2 |
Highest mean wind speed greater than 17.5 m/s
|
|
stable
|
7 |
Visibility greater than 100 000 m
|
|
stable
|
10 |
Mirage - No specification
|
|
stable
|
11 |
Mirage - Image of distant object raised (looming)
|
|
stable
|
12 |
Mirage - Image of distant object raised clear above the horizon
|
|
stable
|
13 |
Mirage - Inverted image of distant object
|
|
stable
|
14 |
Mirage - Complex, multiple images of distant object (images not inverted)
|
|
stable
|
15 |
Mirage - Complex, multiple images of distant object (some images being inverted)
|
|
stable
|
16 |
Mirage - Sun or moon seen appreciably distorted
|
|
stable
|
17 |
Mirage - Sun visible, although astronomically below the horizon
|
|
stable
|
18 |
Mirage - Moon visible, although astronomically below the horizon
|
|
stable
|
20 |
Day darkness, bad, worst in direction specified
|
|
stable
|
21 |
Day darkness, very bad, worst in direction specified
|
|
stable
|
22 |
Day darkness, black, worst in direction specified
|
|
stable
|
31 |
Slight coloration of clouds at sunrise associated with a tropical disturbance
|
|
stable
|
32 |
Deep-red coloration of clouds at sunrise associated with a tropical disturbance
|
|
stable
|
33 |
Slight coloration of clouds at sunset associated with a tropical disturbance
|
|
stable
|
34 |
Deep-red coloration of clouds at sunset associated with a tropical disturbance
|
|
stable
|
35 |
Convergence of CH clouds at a point below 45° forming or increasing and associated with a tropical disturbance
|
|
stable
|
36 |
Convergence of CH clouds at a point above 45° associated with a tropical disturbance
|
|
stable
|
37 |
Convergence of CH clouds at a point below 45° dissolving or diminishing and associated with a tropical disturbance
|
|
stable
|
38 |
Convergence of CH clouds at a point above 45° associated with a tropical disturbance
|
|
stable
|
40 |
Hoar frost on horizontal surfaces
|
|
stable
|
41 |
Hoar frost on horizontal and vertical surfaces
|
|
stable
|
42 |
Precipitation containing sand or desert dust
|
|
stable
|
43 |
Precipitation containing volcanic ash
|
|
stable
|
50 |
Calm or light wind followed by a squall
|
|
stable
|
51 |
Calm or light wind followed by a succession of squalls
|
|
stable
|
52 |
Gusty weather followed by a squall
|
|
stable
|
53 |
Gusty weather followed by a succession of squalls
|
|
stable
|
54 |
Squall followed by gusty weather
|
|
stable
|
55 |
General gusty weather with squall at intervals
|
|
stable
|
56 |
Squall approaching station
|
|
stable
|
57 |
Line squall
|
|
stable
|
58 |
Squall with drifting or blowing dust or sand
|
|
stable
|
59 |
Line squall with drifting or blowing dust or sand
|
|
stable
|
60 |
Temperature steady
|
|
stable
|
61 |
Temperature falling, without going below 0°C
|
|
stable
|
62 |
Temperature rising, without going above 0°C
|
|
stable
|
63 |
Temperature falling to a value below 0°C
|
|
stable
|
64 |
Temperature rising to a value above 0°C
|
|
stable
|
65 |
Irregular variation, oscillations of temperature passing through 0°C
|
|
stable
|
66 |
Irregular variation, oscillations of temperature not passing through 0°C
|
|
stable
|
67 |
Variation of temperature not observed
|
|
stable
|
68 |
Not allocated
|
|
stable
|
69 |
Variation of temperature unknown owing to lack of thermograph
|
|
stable
|
70 |
Visibility has not varied (sun* visible) towards direction specified
|
|
stable
|
71 |
Visibility has not varied (sun* invisible) towards direction specified
|
|
stable
|
72 |
Visibility has increased (sun* visible) towards direction specified
|
|
stable
|
73 |
Visibility has increased (sun* invisible) towards direction specified
|
|
stable
|
74 |
Visibility has decreased (sun* visible) towards direction specified
|
|
stable
|
75 |
Visibility has decreased (sun* invisible) towards direction specified
|
|
stable
|
76 |
Fog coming from direction specified
|
|
stable
|
77 |
Fog has lifted, without dissipating
|
|
stable
|
78 |
Fog has dispersed without regard to direction
|
|
stable
|
79 |
Moving patches or banks of fog
|
|
stable
|
80 |
Brocken spectre
|
|
stable
|
81 |
Rainbow
|
|
stable
|
82 |
Solar or lunar halo
|
|
stable
|
83 |
Parhelia or anthelia
|
|
stable
|
84 |
Sun pillar
|
|
stable
|
85 |
Corona
|
|
stable
|
86 |
Twilight glow
|
|
stable
|
87 |
Twilight glow on the mountains (Alpenglühen)
|
|
stable
|
88 |
Mirage
|
|
stable
|
89 |
Zodiacal light
|
|
stable
|
90 |
St Elmo's fire
|
|
stable
|
1023 |
Missing value
|
|
stable
|