Mon Archived Case Blog

0140Z – Nice Heads Up on New Updraft

The NMDA gave me a nice heads up to the new updraft that was forming on SE flank and already showing signs of rotation. At first I thought it was a “false alarm”, but upon further inspection, I could see new rotating updraft on higher tilts.

0.5 deg tilt
4.0 tilt

It looks like this updraft ultimately played pivotal role (or was at least in the area of) new tornadogenesis about 15-20 min later.

 


 

0220Z – Two NTDAs in Close Proximity

ID20 was the main object. Lat/Lon is 32.491/-96.916
ID33 came along second and is at 32.514/-96.889
This is about 4km apart

These seem a little close together and could clutter up display. Also, these didn’t seem to be two separate areas of low level rotation, but both part of the parent circulation.

-Beltzer