Showing posts with label Video. Show all posts
Showing posts with label Video. Show all posts

Thursday, April 18, 2013

Day of the Grungy Supercell 04/17/2013

Another southern plains moderate risk day that yielded less than expected.  Supercells yes, but since they were moving along a frontal boundary instead of developing on a dry line, they tended toward high precipitation and hence the tornadoes produced were not easily visible.  Significant cloud cover throughout the day kept instability lower than forecast and in addition there was a slight veer-back-veer in the upper wind profile, both of which contributed to storm outflow quickly undercutting inflow as tornadoes tried to establish themselves. The result: those that developed were mostly brief, lasting only a few minutes.

Walt, Eric and Gene left Cordell, OK shortly after 1:00 pm CDT initially to check out the position of the frontal boundary laying SW to NE across the body of the state and to take a look at storms developing on the cool side of that boundary.  We found the frontal boundary along US 183 between Rocky and Hobart, its position made obvious by the sudden condensation on the car windows when we crossed it.  Not long after a tornado watch was issued and we elected to continue on toward Synder or points south of there.  While on the way, an elevated supercell developed above the cooler air behind the front near Roosevelt and was quickly severe-warned. At the same time a warm-sector storm was organizing in the Vernon, TX area just S of the Red River so we continued on to Frederick and Davidson, eventually positioning on CR 2150 in Tillman County to wait on it. Jason was about 30 minutes behind the rest of the team and met the storm as it approached US 183 near Frederick.  The storm developed a rather large, very low-hanging wall-cloud as it became severe warned, but only was able manage a few transient, ragged funnel-clouds.

View of the wall-cloud from Jason's perspective on US 183 at about 3:48 CDT:

Sunday, April 15, 2012

Video of Cherokee, OK Tornadoes 04/14/2012


Dance of the Twins:



Tornado narrowly misses farmyard:



Tuesday, November 8, 2011

Video of Alden and Ft. Cobb, OK Tornadoes 11/07/2011


Close approach to the Alden tornado:



Video clip of Ft. Cobb Tornado:



Chase Data: