Chief Scientist: Watson/Ziegler Flight Director: Damiano Doppler Radar: Shepherd Pilots: Kennedy/Tenneson Cloud Physics: --- Data Technician: Pradas Radiometer: Fedor Systems Engineer: Lynch/McNamara Observer: Shapiro Observer: Atkins Observer: Ching Takeoff Time: 1857 UTC Landing Time: 0049 UTC Official Mission Duration: 6.1 hrs Mission Breakdown VORTEX: 6.1 hrs ARM: 0.0 hrs Number of Data Tapes Used: Radar: 4 Cloud Physics: 1 Video: 3
Data Systems Log
Radar Data System Log Time On(UTC) Time Off(UTC) Comments Tape #1 1919 Start LF&TA TA velocity problems 2110 Radar down Tape #2 2117 No Velocity on TA 2224 TA velocity up Bad cables 0024 Stop record Notes: It seems that a cable may be the problem Cloud Physics Log Time On(UTC) Time Off(UTC) Comments 1800 0000 ETL Radiometer Log Time On (UTC) Time Off (UTC) Comments 1855 0052 No problems
Ample moisture, good shear, and a weak northerly surge in western
Oklahoma suggested possible supercell development somewhere in the western
part of the state. The ground intercept teams departed for northwest
OK only to decide to go south and west when a supercell was reported in far
The P-3 departed OKC at 1857 UTC climbing to FL100 encountering weak convection near Watonga, OK. While the ground teams re-deployed southward, the P-3 provided radio repeater service, since the teams were scattered across tens of miles. The P-3 woes with respect to the tail radar velocities had not dissappeared as expected. Terry Lynch and Richard McNamara spent the next 6 hours testing one hypothesis after another to determine the cause.
Their conclusion was that cables were the culprit. New cables will not arrive from Tampa for several days.
We finally reached the convective activity in southwest Oklahoma by 2030 UTC observing multiple cells along the frontal boundary. Several BWERs were observed. After several unconfortable rides we descended to 3000 AGL below the clouds at 2200 UTC. Intermittently good velocity data began at 2224 UTC. By 2300 UTC, most of the convective activity was decreasing in intensity with the FC cancelling operations at 2350 UTC.
Another null case consuming 6.1 flight hours.
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