Anticyclonic Supercell NE of Norman…in August!

August 21, 2006 by
Filed under: Summary 

Driving E on Alameda last evening at about 00Z, I took note of a remarkably robust updraft several miles to the ENE with a wide, high base, and very little precip beneath. Disgusted that we again would get screwed on rainfall (apparent motion was propagational toward the N), I didn’t think much more of it.

zoom on convective turrets

Rich called shortly after I got home and mentioned that the storm was rotating…anticyclonically. Quick check of SRM from Twin Lakes (via COD) supported this, though the storm was so close that 0.5 deg was not too helpful. I don’t have N-SHARP at home to crank out specific numbers, but eyeballing the 00Z OUN hodograph indicated fairly robust negative SRH in low levels.

I drove a mile N of my house to an open NE view and reeled off a series of shots. By this time there was quite a bit of precip beneath and the storm was SVR-warned. The storm would fall apart fast around 1Z, when I took the last two images linked here.

0045Z

101Z

102Z

[Yes, I know the file lettering is non-sequential.]

Anyway, that’s what an anticyclonic supercell looks like in the hazy central OK skies. Hey: It’s August amidst Dust Bowl II. We’ve been reduced to begging for the rain that TUS and ELP have been getting. And any storm rotation is a rare treat.

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