I liked this, especially with the amazing weather Tucson's been having-
"One way to understand the distinction between concentration and meditation is by using rain as an analogy. When rain starts, the moisture of clouds and fog (everyday awareness) coalesces into concentrated moisture and becomes distinct raindrops. These raindrops represent dharana—intermittent moments of focused attention. When the rain falls to earth and creates a river, the merging of the individual raindrops into one stream is like dhyana or meditation. The separate raindrops merge into one continuous flow, just as individual moments of dharana merge into the uninterrupted focus of meditation."