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Variable clouds with a strong thunderstorm in spots; warm
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| Today | Normal | Record | 5/31/2012 | |
|---|---|---|---|---|
| High | 78° | 71° | 101° (1934) | 61° |
| Low | 54° | 47° | 30° (1972) | 36° |
Rises at 5:15 AM with 15:23 of sunlight, then sets at 8:38 PM
May 23, 2013; 5:00 AM ET A team has developed a model to determine the influences of humans and climate on vegetation changes. Valerie Smock explains what has the greatest effect.