Tornado Warning NW Atlanta Area

By -
This is a case where Doppler radar (which measures winds internal to a storm) allows us to track tornadoes we could not see with conventional radar.

1:52pm. The differing colors is the position of the rotation.


1:43pm, the rotation was somewhat stronger at this time.

The conventional radar at 1:58pm CDT does not show a hook, so the Doppler data is essential. The area northeast of Kennisaw and around Noonday and Woodstock are in the path of this storm. 
The tornado symbols = earlier touchdowns.

Comments

Post a Comment

Popular posts from this blog

“We Encourage All Citizens to Take Steps to Prepare Themselves for Any Type of Emergency or Disaster"

By -
Image
The title of this essay is from a press release that indirectly "blames the victim." The author is Sedgwick County Emergency Management regarding a fatal tornado that occurred just north of Wichita at 1:14 this morning. The tornado was rated EF-2 ("strong") intensity. I believe the wording is unfortunate as discussed below.  Photo: KAKE.com. Note that with a basement, as little as seconds to dash down the stairs might have been sufficient to avoid injury.  In what has increasingly and unfortunately become the norm in tornado situations, no NWS tornado warning was issued even though: Rotation was depicted on radar Radar shows lofted debris People from outside the NWS are observing tornadoes and bringing them to NWS's and the public's attention.  I want to be clear: the tornado formed practically on top of the home and there was probably no way to have warned in time to help the man killed. But there is absolutely no reason a tornado warning could not have bee...
Read more

Meteorology: Tornado or Side Lobes?

By -
Image
This past Friday, we had a great example of how a meteorologist can tell the difference between side-lobes (a false echo that mimics a tornado's circulation on radar) and one indicating a tornado is forming or in progress. I'm going to walk you through it so young meteorologists, in a similar case, won't make the mistake of mistaking side lobes for a tornado.  This case was in north central Texas on February 2nd. I'm using the Abilene/Sweetwater WSR-88D and the software is RadarScope. When I draw on one panel of the screen, it shows up on the other in the same place, so the measurements are about as exact as any in meteorology.  The Thunderstorm Cluster, 4:24pm Above is a cluster of thunderstorms with the two storms with arrows starting to transition to supercells. We already have the northern storm (just south of Aspermont)  moving north northeast. In a situation like this, the storm will likely be "a hailer" -- meaning it is likely to produce hail, possibly ...
Read more