Sunday, 11 June
T-28 Flight 754
Project Flight 9
Take Off ~ 21:15 GMT
Return to Base: 22:35 GMT
Pilot: Tom Root
The aircraft mission targeted a vigorous cell 55 nmi northwest of CHILL.
This storm evolved into an asymmetric MCS as the mission progressed
and the storm moved eastward. A long
pass was made northwestward from the near (inflow) side well into the stratiform
region to the northwest, with a return pass to the southeast.
A second northwestward pass was made just through a convective core
on the leading edge, followed by
an exit eastward out of the front of the storm. Heavy icing conditions and
vigorous updrafts were encountered. On the last pass the pilot encountered
some difficulty in keeping the engine running.
Hail to ¾ of an inch was noted by mesonet and ballooning crews underneath
the storm. At least one balloon
was launched into the storm near the T-28 position during the aircraft mission.
The storm went through phases where the CG activity was mainly positive, then mainly negative. The LMA also indicated extensive horizontal flashes during some periods.
The DMT liquid water sensor was lost during the first pass to the northwest. The HVPS image recording was intermittent beginning about this time. Peak updrafts were <~10 m s-1 and peak cloud water concentrations were ~ 1.5 g m-3. Good precipitation particle images were obtained from the 2D-C and hail spectrometer.