Ask Heather - open circle on the radar

KNOXVILLE, Tenn. (WVLT) -- Have you ever seen an open circle on the weather radar, but there's rain all around it? Heather explains the cone of silence, and we're not talking about Get Smart.

Alexandria Carli asked Heather on Facebook why sometimes there is a empty circle over the radar site, when it’s raining all around?

It’s actually called the “Cone of Silence” and no I’m not talking about the Get Smart dome that keeps others from hearing your conversations! But this should help you remember the name.

The radar functions by sending signals out to the sides, in a circle. You see in the form of sweeping lines on the Local 8 New Pinpoint Doppler Radar. But, it cannot scan straight up. That results in the what looks like a blank circle over the radar site.

If you have a weather-related question, feel free to Ask Heather! You can use the form on the weather page, or like her Facebook page and ask her online.

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