Altitude MSL of base of low cloud layer. Returns 0 if no low cloud layer is active. Measured in feet. Read-only.
Note: All weather variables report the weather in the aircraft's current location. This weather information only reflects the weather defined by the weather commands if the aircraft is in the area defined by the Weather and Weather_Char commands.
Example
IF CLOUD_LOW_BASE < 1500 THEN
PRINT "The clouds are right on the deck."
ENDIF