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re: Tornado Thread: HIGH RISK in Oklahoma and Kansas
Posted on 5/18/17 at 2:02 pm to GEAUXmedic
Posted on 5/18/17 at 2:02 pm to GEAUXmedic
Does the green band in the second photo show the rotation?
Posted on 5/18/17 at 2:05 pm to chinhoyang
What you look for is called a couplet, when you have bright red and bright green next to each other. You have reds showing velocity moving away from the radar site, and green which are moving towards. The brighter the color the higher the velocity. So even when velocities are low, you can kinda tell where rotation is beginning, you can also tell how strong it is, and if it is broad or tightened. Also paired with base reflectivity and correlation coefficient radar you can see other features like hooks and debris balls to confirm whether there may be a tornado or not.
Posted on 5/18/17 at 2:06 pm to chinhoyang
quote:
Does the green band in the second photo show the rotation?
The bright reds and greens do. When they are close together, or sometimes swirled together it indicates rotation. Red is wind moving away from the radar, green is wind moving toward the radar. The tighter together they are, the stronger the rotation. When the swirl together, it usually is an indication of very strong rotation, possibly producing a significant tornado.
This post was edited on 5/18/17 at 2:09 pm
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