5/18/10 DISC: CO/WY

[Matthew Crowther]

A great show in extreme northern CO to southern WY today:

http://www.9news.com/9slideshows/gallery.aspx?slideshowname=05-18-10-Severe-weather

http://www.facebook.com/video/video.php?v=422502451978&ref=mf

 

[Allan Jeffers]

Nothing extreme in my area, but here is what I did get:

taken while I was at work, near 48th and tower, Denver

From the 2nd:



From Storm 3:

 

[Tony Cook]

Dumas, TX Storm Reports from KAMA

KAMA has storm reports up from the Dumas, TX and other supercells from 5/18:

http://www.srh.noaa.gov/news/display_cmsstory.php?wfo=ama&storyid=52587&source=0

The first two reports are of particular interest. I shot rapidly rotating, very low wall clouds on both of these, but never saw ground circulation. Terrain is flat there, so ground level was visible. Both reports are of EF0 with no damage. I am wondering what the basis for tornado confirmation is on these. I don't doubt it necessarily- DOW was there, and on the first report, I was several miles away. For the second, I was ~ 2 miles from the low wall cloud and could not confirm touchdown. Did not see dust whirl or anything other than a very low, rapidly rotating wall cloud.

Since there was no damage, I am wondering if they are using DOW data for confirmation, or if other chasers could shed some light on what they witnessed during these times. I will post pics of the wall clouds when I get my report up in the next day or two.

Thanks,
TonyC

 

[Tony Cook]

Still curious about this. After meticulous review of my video, I did find a tornado corresponding to the KAMA report of tornado #2. Also found one tornado from the same time period as the first four west of Dumas, but not included in the KAMA report. These are documented in the first part of my Chase report for this day:

http://twistedtexas.blogspot.com/2010/05/chase-report-18-may-2010-dumas-tx.html

On tornadoes 1 & 3, I was 4+ miles away, so even with a clear view of the ground, I could have missed evidence of a tornado. I am just curious how path length, width, and times were determined if these were all EF0 and no damage occurred. Guessing it is based mainly on reports from Vortex2 crew, who were right there on all these.

TonyC