VORTEX-SE - Case Evaluation - March 27, 2017


Towards a better understanding of tornadogenesis and tornado environments in the Southeastern U.S.

Case Evaluation - IOP1b: 27 March, 2017

Evaluating dual-Doppler, dual-pol, surface, and upper air data collected during a QLCS with bowing segments, areas of weak low-level rotation, and leading isolated cells.

Mobile Radars: NOAA NOXP (X-band), OU SMART-R (C-band), UAH MAX (X-band), Purdue X-Pol (X-band); Stationary Radars: ARMOR (C-band), KTHX 88D (S-band). Other Observations: Soundings, TTU Stesonet, Disdrometers.

Best possible dual-Doppler coverage between VSE radars (not accounting for blockage, attenuation, etc.), with baselines: < 25 km (green), 25-40km (yellow), and > 40km (red). Circles overlaid on radar locations indicate qualitative assessment of unblocked (green), partly-blocked (yellow), and heavily-blocked (red) data sectors at the lowest available elevation angles (0.5° or 0.8°).

Single-Doppler velocity on 27 March at approximately 2104 UTC at the lowest antenna elevation angles (0.5° or 0.8°), from the VSE community radar facilities. These show overall data quality from each radar site.