Chase Log: May 23rd, 2007
Click on any of the SPC products below (Convective Outlooks, Watches, or MCDs) to see the SPC's "Severe Thunderstorm Events" page pertaining to this event.
Total Distance: 530 miles
Target Area: Near Canadian, TX
Chase Area: May, OK, to Libscomb, TX
Maximum SPC Risk category: Moderate
Watches:
Mesoscale Discussions (MCDs):
Our group called it quits about an hour ago. We deployed thrice this afternoon and evening -- north of May, OK; in Shattuck, OK; and east of Lipscomb, TX. As I should have guessed today, experience tells me that storms hate Oklahoma. Sure enough, the better mesocylcones never really made it through central Lipscomb County. I think I remember seeing 2 or 3 mesocyclones that had been healthy previously weaken rapidly as they neared Lipscomb and points in the eastern part of that county. It's either supercells that produce immediately after crossing into KS from OK, or it's supercells that fall apart as they move from TX into OK.
I did like my original target, which was the area just north of a line from Canadian to Pampa. It seems that the best supercells moved through that area. Oh well. I'm surprised to see 0-3km SRH as low as it was in parts of the ne TX PH on the RUC/SPC mesoanalysis earlier this afternoon and evening (relative to previuos forecasts), and that may have had something to do with some outflow issues we noted. I think part of the issue was that the storms moved parallel to the edge of the moisture surge and surface convergence, which was oriented nearly parallel to upper-level flow. Anvil seeding, outflow collisions, etc. Structure was pretty good, though; HP made seemed most common from what we noted.
05-23-2007 Chase Pictures
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