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As predicted by Penn State group: A pretty sunset with vivid colors

The skies yielded some pretty colors for sunset in the Philadelphia area Thursday, as predicted by a Pennsylvania State University group that developed a model for forecasting vivid sunsets and sunrises.

The skies yielded some pretty colors for sunset in the Philadelphia area Thursday, as predicted by a Pennsylvania State University group that developed a model for forecasting vivid sunsets and sunrises.

Some viewers saw stunning tangerine and crimson red streaked across the horizon amid high, wispy clouds.

Thursday night's event wasn't quite as good as Wednesday's, when the model predicted - and got - an especially vivid sunset, team member Ben Reppert said.

But it was certainly "above average," he added.

The group considers more than 20 factors in forecasting the quality of a sunset or sunrise. Moisture, pressure, and cloud cover figure prominently in the calculations.

Interested in catching the next good one? Go to www.sunsetwx.com.

ssnyder@phillynews.com