Whoever sent any solo student on a crosscountry with such a TAF had obviously not considered the consequences. The British aerospace court case in Edinburgh finished last week and they were fined £40000 damages, the original damages sought being £400,000!
This despite an extensive briefing by the instructor to the student and him disobeying his instructions to avoid cloud, in which he lost control, I fear this may have further repercussions within light aviation, if an incident had occurred remember you are the one authorising the flight and are responsible for the welfare of the student who has no experience to fall back on!