[TEC] Here comes the rain again?

[castorp345]

Ahoy all,
In my real-time Aleutians campaign I've taken to manually tweaking the scene.dat file (using skwas' amazing 3ditor) to reflect current real-world wx from ship and buoy obs data (courtesy of NOAA ==> http://www.ndbc.noaa.gov/radial_sear...0&ot=A&time=12 ), enabled by setting UseCotrollersWeatherData=True in the EnvSim node subsection.
My issue however is that while this works admirably well for wind and visibility conditions, I can't seem to find the controller settings for rain and snow...
sure the rain node parameters are there (randomwind, dropsnumber, etc), but how does one turn the rain on???
Many thanks and fair winds,
hc