PITTSBURGH - Look in the sky! You might catch a pretty cool weather phenomenon Wednesday.
Iridescent clouds can be seen across much of the region.
The "rainbow clouds" are caused when the sun's light is scattered by ice crystals or water droplets in the high, thin cirrus clouds.
They're generally more predominant during the midday hours when the sun is at a higher angle in the sky.
If you want to receive ALERTS about weather, download our Severe Weather Team 11 App.
It can also be a precursor to thicker clouds rolling in later and rain within 24 hours.
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