weather station number     , observations since February 1, 2005
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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
April 18,
Friday
17
4.7
743.3
761.5
-1.7
84
Wind blowing from the south-eastLight breeze
(2 m/s)
  
100%.
State of sky on the whole unchanged.Rain and snow or other types of solid precipitationCloud covering more than 1/2 of the sky throughout the appropriate period.  Stratocumulus other than Stratocumulus cumulogenitus.
10% or less, but not 0
600-1000
Altostratus translucidus. 
20.0
2.2
      
14
2.4
745.0
763.4
-2.4
93
Wind blowing from the south-southeastGentle breeze
(4 m/s)
  
100%.
State of sky on the whole unchanged.Rain and snow or other types of solid precipitationCloud covering more than 1/2 of the sky throughout the appropriate period.  Stratocumulus other than Stratocumulus cumulogenitus.
100%.
600-1000
  
20.0
1.4
      
11
0.3
747.4
766.0
-0.9
94
Wind blowing from the south-eastLight breeze
(3 m/s)
  
100%.
Continuous fall of snowflakes, moderate at time of observation.Rain and snow or other types of solid precipitationCloud 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.
70 – 80%.
600-1000
Altostratus translucidus. 
2.0
-0.6
      
08
-1.0
748.3
767.0
0.0
80
Wind blowing from the east-southeastLight breeze
(2 m/s)
  
100%.
Intermittent fall of snowflakes, slight at time of observation.Snow and/or other types of solid precipitationCloud 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.
-3.6
 Stratocumulus other than Stratocumulus cumulogenitus.
90 or more, but not 100%
300-600
Altostratus opacus or Nimbostratus. 
10.0
-4.0
Trace of precipitation
12
Surface of ground frozen.
-1.0
  
05
-3.2
748.3
767.1
0.0
94
Wind blowing from the east-southeastLight air
(1 m/s)
  
40%.
     No Stratocumulus, Stratus, Cumulus or Cumulonimbus.
20–30%.
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.Cirrus fibratus, sometimes uncinus, not progressively invading the sky.
20.0
-4.0
      
02
-3.1
748.3
767.1
-0.2
91
Calm, no windCalm  
10% or less, but not 0
     No Stratocumulus, Stratus, Cumulus or Cumulonimbus.
no clouds
2500 or more, or no clouds.
No Altocumulus, Altostratus or Nimbostratus.Cirrus fibratus, sometimes uncinus, not progressively invading the sky.
20.0
-4.4
      
April 17,
Thursday
23
-3.0
748.5
767.3
0.2
94
Calm, no windCalm  
10% or less, but not 0
     No Stratocumulus, Stratus, Cumulus or Cumulonimbus.
no clouds
2500 or more, or no clouds.
No Altocumulus, Altostratus or Nimbostratus.Cirrus fibratus, sometimes uncinus, not progressively invading the sky.
20.0
-3.9
      
20
3.4
748.3
766.6
-0.3
66
Wind blowing from the northLight air
(1 m/s)
  
60%.
    
5.2
Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.
20–30%.
600-1000
Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels.Cirrus fibratus, sometimes uncinus, not progressively invading the sky.
20.0
-2.5
0.9
12
    
17
3.9
748.6
767.0
-0.6
67
Wind blowing from the northLight breeze
(3 m/s)
  
70 – 80%.
State of sky on the whole unchanged.Shower(s).Rain and snow or other types of solid precipitation  Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.
70 – 80%.
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.No Cirrus, Cirrocumulus or Cirrostratus.
20.0
-1.8
      
0