Our project meteorologist Elizabeth Austin took this picture of lenticular clouds over her house in Nevada yesterday.
Lenticulars are important to glider pilots because they only occur when there is wave activity. Sometimes the wave might be too weak to support a glider or there is no lift underneath the wave that would enable us to climb up into it but these deeply-stacked lennies in the photo indicate lots of strong wave.
There has been lots of wave in other parts of the world too. Terry Delore, long time associate of Steve Fossett, has claimed a record for flying more than 2500km in New Zealand on Sunday and Klaus Ohlmann has flown several flights more than 2000km in Argentina within the last two weeks.