User`s guide

Chapter 3 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 49
PW Code Textual Representation
91 Thunderstorm, slight or moderate, no precipitation
92 Thunderstorm, slight or moderate, rain/snow
94 Thunderstorm, heavy, no precipitation
95 Thunderstorm, heavy, rain/snow
1) Codes are used if precipitation or fog was observed during the preceding hour but not at the
time of observation.
2) Codes are used if precipitation or fog is observed at the time of observation.
Enh/2
Press ↓ on the first Enhancement screen (Enh/1) to get to the second
Enhancement screen (Enh/2):
MAWS1 Enh/2 13:10
H Vis 10A: 5400 m
Cloud Octas Height m
L1 3 640
L2 5 880
L3 8 1040
L4 / /////
L5 / /////
V Vis
↓a ↓↑=Next/Prev
NOTE
Vertical visibility (V Vis) is available only when the sky is clear of
clouds. If any clouds are detected, the vertical visibility measurement
is not available.
Table 9 Second Enhancement Screen Information
Screen Label Measurement Unit SI (US)
H Vis 10A 10-minute average horizontal visibility
measured by PWD11A
m (sm)
Cloud Cloud bases L1 to L5. L1 is the lowest cloud
base.
Octas Sky condition categories. 1 to 8 octas
Height Height of the cloud base. m (ft)
///// The cloud base does not exist.
V Vis Vertical visibility measured by CT25KAM. m (ft)