The environment across central North Carolina during the late afternoon on 10 June, 2011 was characterized by high CAPE values and low bulk shear. The SPC analysis of MLCAPE was elevated at around 1500-2000 J/kg. The SPC analysis of bulk shear was very low with the 12 UTC and 00 UTC KGSO RAOB showing very low shear (less than 10 kts). The environment resulted in unorganized convection with numerous downburst signatures and cool pool interactions.
This type of environment is opposite that of the environment the current CSTAR project is investigating, but the event provides an opportunity to show convective processes that can be shown with rapid radar sampling, like that available with the TDWR. It is eye opening to see the number of small scale convective processes that are not adequately sampled with traditional radar NEXRAD VCP’s.
A loop of 0.3 degree base velocity imagery from the TRDU TDWR radar located in northern Wake County on Friday June 10, 2011 is available. The loop contains 93 frames of 0.3 degree reflectivity imagery for every minute between 2157 UTC through 2330 UTC. This loop shows at least 16 different downburst signatures across Wake, Durham, Granville, Franklin, and Nash Counties.
A loop of 0.3 degree base reflectivity imagery from the TRDU TDWR radar located in northern Wake County on Friday June 10, 2011 is available. The loop contains 57 frames of 0.3 degree reflectivity imagery for every minute between 2205 UTC through 2304 UTC and highlights the large number of outflow boundaries.