Precipitation and Fog (50-58). |
||
50 |
Slight r |
2f. or 3f. |
51 |
Moderate r |
|
52 |
Heavy r |
|
53 |
Slight r |
4f. or 5f. |
54 |
Moderate r |
|
55 |
Heavy r |
|
56 |
Slight r |
6f. to 8f. |
57 |
Moderate r |
|
58 |
Heavy r |
Precipitation and Squalls of Wind (59-70).
59 |
Slight r. |
60 |
Moderate r. |
61 |
Heavy r. |
62 |
Slight h. |
63 |
Moderate r. and h. |
64 |
Heavy r and h. |
65 |
Slight rs. |
66 |
Moderate rs. |
67 |
Heavy rs. |
68 |
Slight s. |
69 |
Moderate s. |
70 |
Heavy s. |
Snow Covering.
71 |
s over whole country. |
|
72 |
s with bare patches. |
|
73 |
Deep drifts. |
|
74 |
Reserve figures |
|
75 |
Reserve figures |
|
76 |
Reserve figures |
Precipitation (77-97).
77 |
Slight d. |
|
78 |
Moderate d. |
|
79 |
Thick d. |
|
80 |
Slight r. |
|
81 |
Moderate r. |
|
82 |
Heavy r. |
|
83 |
Slight h. |
|
84 |
Moderate h. |
|
85 |
Heavy h. |
|
86 |
Slight rs. |
|
87 |
Moderate rs. |
|
88 |
Heavy rs. |
|
89 |
Slight s. |
|
90 |
Moderâte s. |
|
91 |
Heavy s. |
|
92 |
Slight tlr. |
Without hail |
93 |
Moderate tlr. |
Without hail |
94 |
Heavy tlr. |
Without hail |
95 |
Slight tir |
With hail. |
96 |
Moderate tlr |
|
97 |
Heavy tlr |
|
98 |
Reserve Figures. |
|
99 |
Code II. - Past Weather. - WW.
Note. - 00-49. Weather without precipitation. 50-97. Weather with precipitation.
No Precipitation or Fog (00-14). |
||
00 |
equals |
Cloudless. |
01 |
- |
b and bc; med. or high cloud. |
02 |
- |
b and bc; low cloud. |
03 |
- |
b and c; mixed cloud. |
04 |
- |
bc and c; med. or high cloud. |
05 |
- |
bc and c; low cloud. |
06 |
- |
bc and c; mixed, cloud. |
07 |
- |
c and o; med. or high cloud. |
08 |
- |
c and o; low cloud. |
09 |
- |
c and o; mixed cloud. |
Overcast with blue patches (10-12). |
||
10 |
equals |
med. or high cloud. |
11 |
- |
low cloud. |
12 |
- |
mixed cloud. |
13 |
- |
completely overcast; low or mixed cloud. |
14 |
- |
b and o; low or mixed cloud. |
Fog with Cloüd above (15-19). |
||
15 |
equals |
overcast and 1f. |
16 |
- |
overcast and 2f. |
17 |
- |
overcast and 3f. |
18 |
- |
overcast and 4f. or 5f. |
19 |
- |
overcast and 6f. to 8f. |
Haze or Fog (20-24). |
||
20 |
equals |
Haze 1f. |
21 |
- |
Haze 2f. |
22 |
equals |
Fog 3f. |
23 |
- |
Fog 4f. or 5f. |
24 |
- |
Fog 6f. to 8f. |
Wet Fog, or Mist (25-29). |
||
25 |
equals |
Mist 1fe. |
26 |
- |
Mist 2fe. |
27 |
- |
Fog 3fe. |
28 |
- |
Fog 4fe. or 5fe. |
29 |
- |
Fog 6fe. to 8f. |
Special Phenomena without Precipitation (30-49). |
||
30 |
equals |
e (we air). |
32 |
- |
Dust Haze. |
33 |
- |
Dew. |
34 |
- |
Hoar Frost. |
35 |
- |
Rime. |
36 |
- |
Glazed Frost. |
37 |
- |
Glazed Roads. |
38 |
- |
Solar Halo. |
39 |
- |
Lunar Halo. |
40 |
- |
Solar corona. |
41 |
- |
Lunar corona. |
42 |
- |
Aurora. |
43 |
- |
Squalls. |
44 |
- |
Gale. |
45 |
- |
Gloom. |
46 |
- |
Ugly; threatening. |
47 |
- |
Thunder. |
48 |
- |
Lightning. |
49 |
- |
Thunder and Lightning. |
Precipitation. Passing Showers (50-61). |
||
50 |
of slight |
rain |
51 |
of moderate |
|
52 |
of heavy |
|
53 |
of slight |
hail or r and h. |
54 |
of moderate |
|
55 |
of heavy |
|
56 |
of slight |
|
57 |
of moderate |
|
58 |
of heavy |
|
59 |
of slight snow. |
|
60 |
of moderate snow. |
|
61 |
of heavy snow. |
Occasional Precipitation (62-76). |
|||
62 |
occasional |
slight d. |
|
63 |
- |
moderate d. |
|
64 |
- |
thick d. |
|
65 |
- |
slight r. |
|
66 |
- |
moderate r. |
|
67 |
- |
heavy r. |
|
68 |
- |
slight r and h. |
|
69 |
- |
moderate r and h. |
|
70 |
- |
heavy r and h. |
|
71 |
- |
slight |
rs or r and rs. |
72 |
- |
moderate |
|
73 |
- |
heavy |
|
74 |
- |
slight s. |
|
75 |
- |
moderate s. |
|
76 |
- |
heavy s. |
Continuous or nearly continuous Precipitation (77-91). |
||
77 |
slight |
drizzle. |
78 |
moderate |
|
79 |
thick |
|
80 |
slight |
rain. |
81 |
moderate |
|
82 |
heavy |
|
83 |
slight |
r and hail. |
84 |
moderate |
|
85 |
heavy |
|
86 |
slight |
rs or r and rs. |
87 |
moderate |
|
88 |
heavy |
|
89 |
slight |
snow. |
90 |
moderate |
|
91 |
heavy. |
Thunderstorms (92-97) |
||
92 |
slight tlr |
without hail. |
93 |
moderate tlr |
|
94 |
heavy tlr |
|
95 |
heavy tlr |
with hail |
96 |
slight tlr |
|
97 |
heavy tlr |
|
98 |
Reserve Numbers. |
|
99 |
Code III. - Form of Cloud.