NEXRAD
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USA
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USGS / NOAA
KATX
Finding observations
160 km width at ground
x6
NOAA / Unidata
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USGS
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Natural Earth
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How radar works
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1 Send a pulse
2 Receive an echo
3 Sweep the sky
Preparing scan
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Cutaway: the weatherproof dome stays still; the dish inside turns and tilts. Model enlarged; pulse travel slowed. Directions and echoes come from this loaded scan.
How radar works
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