NEXRAD Weather Radar: How it Works and What Those Images Tell Us

Jami Boettcher
CIMMS/National Severe Storms Laboratory

The NEXRAD radar network is the backbone of the National Weather Service hazardous weather warning program. We will start with a look at how the signal is transmitted, received, and processed to generate those colorful images, and the tradeoffs between data quality and the need for faster updates. We’ll look at how the Doppler data (velocity) are generated, and get lots of practice at interpreting circulations. Then we’ll add the Dual Polarization upgrade, and how these radar images are a bit like an MRI vs. an Xray, in terms of supporting the forecaster’s conceptual model of what the atmosphere is doing. We’ll also spend some time on recent updates to the system that produce all these critical radar images at a faster rate, showing better storm evolution. There will be lots of radar interpretation along the way, giving insight into the images seen on the local TV broadcasts and internet sources.

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Thursdays - October 12-November 9, 2017 - 2-3:30pm


CCE Forum Building
1704 Asp Avenue, Norman
Room A1