Breezy
Member
i’m not understanding these CC drops with those reflectivity and velocity returns. none are consistent
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Yeah, this is bizarre. Debris doesn't hang in the air this densely packed, for this long from a tornado that has dissipated, but there's NOTHING there on velocity.
North East?Interesting storms forming in NW Alabama.
I believe he was referring to the line of storms that was trailing the rest of the system to the west. It has weakened now.North East?
That whole thing was just weird with the cc and velocity couplet or lack thereof ...haven't seen that beforeDefinitely weird. It finally dissipated. I think on higher tilts and from other radars there did still appear to be a bit of rotation even after it was gone from 0.5 KBMX.
Essentially any tornado can produce a TDS, even EF0s. Also yes, something as small and light as leaves or roof shingles can cause a TDS to pop up. With that said, for reasons that I’m not clear on, not all tornadoes produce TDSs, even strong ones. A good example would be the EF3 tornado that struck Elon, VA on April 15, 2018. The community took a direct hit, and multiple homes were completely destroyed, yet I remember that no TDS appeared when it moved through Elon. Weird stuff.Can someone explain the debris signatures on that Leeds storm? How do you have that kind of debris showing up on radar but no real reports of damage? I was really expecting major damage at least over a small area with that.
Is it just leaves being lofted up? Just how much debris does it take and how large does it have to be to show up as a debris signature?
Without researching it, my initial thought is that distance from the radar is one key aspect. The greater the distance between the storm and the radar, the higher the beam - I would imagine that as the beam height increases, the likelihood of seeing debris decreases.Essentially any tornado can produce a TDS, even EF0s. Also yes, something as small and light as leaves or roof shingles can cause a TDS to pop up. With that said, for reasons that I’m not clear on, not all tornadoes produce TDSs, even strong ones. A good example would be the EF3 tornado that struck Elon, VA on April 15, 2018. The community took a direct hit, and multiple homes were completely destroyed, yet I remember that no TDS appeared when it moved through Elon. Weird stuff.
Without researching it, my initial thought is that distance from the radar is one key aspect. The greater the distance between the storm and the radar, the higher the beam - I would imagine that as the beam height increases, the likelihood of seeing debris decreases.
Right, so that's the opposite effect - the lower the beam, the more "debris" that will show up even if it's not real. If the beam is low enough, I would think you could see the dust cloud from a storm moving across a recently plowed field. Again, this isn't a research-backed statement - just my hunch.This tornado was pretty close to the BMX radar, though. I think the 0.5-degree tilt was hitting it at less than 2kft.