Chief Scientist: Watson/Ziegler Flight Director: Damiano Doppler Radar: Shepherd Pilots: Kennedy/Tenneson Cloud Physics: --- Data Technician: McMillan Radiometer: --- Systems Engineer: Barr Observers: Doswell Navigator: Strong Observers: Butcher (REU), Richter (REU) Takeoff Time: 1843 UTC Landing Time: 0051 UTC Official Mission Duration: 6.3 hrs Mission Breakdown VORTEX: 6.3 hrs ARM: 0.0 hrs Number of Data Tapes Used: Radar: 1 Cloud Physics: 0 Video: 3
Data Systems LogRadar Data System Log Time On(UTC) Time Off(UTC) Comments Tape #1 1854 Begin TA & LF 2342 Stop recording Some problems with radar system, possibly due to heat in cabin. Did not save radar calibration at end of flight. Cloud Physics Log Time On(UTC) Time Off(UTC) Comments 1850 0040 Tape drive problem Data saved on disk ETL Radiometer Log Time On (UTC) Time Off (UTC) Comments 1830 0055
Strong dynamics with mesolow, east-west cold front, bulging dryline,
good CAPE made the chances high for supercell development in central and
eastern Oklahoma. We hurried our planned takeoff and were airborne at
1843 UTC. The Electra followed 30 min later.
On climbout from OKC, there were TCu all quadrants. It was very clear in southwest Oklahoma. After doing a radar calibration in western Oklahoma, we performed a mini INIT leg at 500'AGL eastward along 35N. We encountered the dryline over Chickasha, ever increasing moisture to Purcell, and finally, southerly winds 20nm east of Purcell with towering Cu.
Following the INIT pattern, we climbed and went northward to contact the ground teams, and then proceeded to the most intense convective growth 15nm southwest of Kingfisher, OK. Due to TCu surrounding the main cell and the need to remain high for repeater coverage, we had difficulty setting up radar legs until we descended to 2000'AGL and began radar legs at 2112 UTC. We completed 10 Doppler passes on the supercell before it began to line out and had to abandon our patterns due to the Tulsa airport traffic area.
We relocated to a single cell south of Tulsa which showed encouraging evolutions before dying. We completed 8 radar passes before the FC cancelled operations at 0000 UTC. We returned to OKC at 0051 UTC, consuming 6.3 hours.