Headed out about 10:30 after reading the Day1 high risk. I was targeting the area between SPS and DFW last night, and that didn't really change this morning. We headed south on I-35 towards Ardmore, where we were planning on stopping for more info. I had major problems with my mobile internet setup, so we could not get any internet info while on the road. Got a few quick calls to some students back in Norman, however. We got to ADM, after driving through numerous 'blue sky' areas (yes, the sun was out!). In ADM, we headed west on Hwy 70. We knew little of the thunderstorms ahead of us, and I only knew that things were linear. I was able to get sporadic reception of the Gainesville NWR, which was saying how the line was starting to break up into dominant supercells. So, excited, we continued westward, instead of dropping south like originally kinda-planned. Well, the line hit us east of Waurika, where we measured winds near 50mph. We then went north and east and south and east... LOL... All trying to get ahead of this thing to at least give us a chance of getting some tornadic action in pre-frontal supercells. Well, we got to ADM agian and realized that it wasn't going to happen. So, ate and Mazzio's there and headed back to Norman...
This is one of those situations where I can see why the SPC would issue a High and PDS, because the shear was extreme (0-1km shear vectors over 50kts in some places of OK!!!). However, the instability just wasn't high enough. Additionally, and I think more importantly, this goes to show how important convective mode is to tornado potential. Had we had discrete supercells instead of a linear system, there would have been, in my opinion, a couple of long-track, significant tornadoes, as NWS and SPC mentioned. However, both the lack of significant instability (although it was greater than models had progged) and the linear mode squashed any tornadic chances in OK. It was nice to see the 18z FWD sounding with 0-3k helicity >600 m2/s2, not to mention the >65-70kt 0-6k bulk shear (largely unidirectional speed shear, however). Oh well, it is still winter! And I certainly can't pass up a high risk day like today, even if odds were against us...
Jeff Snyder
KC0HJX
www.TornadoCentral.com