Case Studies

 February 10, 2009
A series of supercells developed in the testbed early afternoon on Feb 10. The first cells initiated in IP1 at 19 UTC along a dryline and continued training over the area until the cells merged into a bow echo, moving out of IP1 at ~03 UTC (Feb 11). All 4 radars were operating in DCAS mode. RHIs were sampled every 3 min. Several low-level circulations and hook-echoes were observed, with at least one storm spawning a tornado outside of the IP1 region (in Edmond, OK).

 April 11, 2009

 April 12, 2009

 May 13, 2009 (Tier2a)

 May 13, 2009 (Tier2b)
A cold front approached the testbed from the north at about 0100 UTC May 14th. By 0200 UTC, a strong low-level circulation had formed and by 0215 UTC low-level rotation was observed in the dual-Doppler region. A damage survey confirmed an EF2 tornado on the ground between approximately 0220 and 0245 UTC. Large hail (2"+) and a large swath of severe winds also accompanied these storms. Storms persisted in the network until 0800 UTC. All 4 radars were operating in DCAS mode. RHIs were sampled every 3 min.

 June 10, 2009 (Tier2a)

 June 14, 2009 (Tier2a)

 June 15, 2009 (Tier2a)