Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: It's finally raining in Ashland, Oregon. We've been parched all summer &amp; fall. The plants &amp; people are rejoicing!
This tweet contains emotions: 
joy