Chase log written by Jenny Brown

On Wednesday March 25th, Jenny headed out with veteran storm chaser Ric Burney and professional photographers Justin Terveen and James Langford into southwest Oklahoma where the best chances of seeing isolated non-tornadic storms was expected.  They took Hwy 81 across the Red River and waited for a couple of hours about 5 miles north of the state line to see what was going to initiate and take root. After a quick analysis of data and high-resolution forecast models, it quickly became apparent that the dewpoints were mixing out (decreasing) rapidly across western north Texas and not looking favorable for any severe weather development south of the Red River.  A couple of discrete supercell thunderstorms were already ongoing across northeastern OK, eventually spawning two tornadoes…one in Sand Springs just west of Tulsa, and another brief tornado between Inola and Peggs on the east side of Tulsa.  Additional supercells had also developed just to the west of Oklahoma City along I-40, with the westward component of the line positioned slightly southwest between I-40 and I-44.  The lead cell in the line had moved into the OKC suburb of Moore and produced a brief tornado.  Seeing that the more westward supercell in the line was within reach and dominating its environment, the group headed north on Hwy 81 hoping to intercept the the storm somewhere between Duncan and Chickasha.  About 35 minutes later, they met up with their target storm near Rush Springs just as it was being undercut by the advancing cold front.  It was in the process of gusting out and becoming outflow dominant when their first couple of shots were taken.  The group then backtracked south to stay ahead of the storm and its advancing wall of wind-driven dust for several more photographic opportunities before the sun set.

danhogan