ROTATE 2004
Selected radar images from DOW3 on 12 May 2004

Tornadic Supercell
Attica, KS - Harper, KS

Radar 7.5 km east of Attica, KS
00:47 - 01:05 UTC
Tornado #2

East is up and range rings are 1.6 km
0055 UTC
Genesis reflectivity at 1.0 degree elevation
Genesis reflectivity at 15.0 degrees elevation

East is up and range rings are 1.1 km
0057 UTC
Doppler velocity at 0.3 degree elevation
Reflectivity at 0.3 degree elevation

0101 UTC
Doppler velocity at 0.4 degree elevation

0105 UTC
RHI Doppler velocity through tornado in Attica
RHI Reflectivity through tornado in Attica

Radar 7.5 km east of Attica, KS
01:23 - 01:40 UTC
Tornado #4

East is up and range rings are 0.4 km
0123 UTC
Doppler velocity at 6.0 degrees elevation
Reflectivity at 6.0 degrees elevation

0127 UTC
Reflectivity at 6.0 degrees elevation

0134 UTC
Doppler velocity at 0.7 degrees elevation

0136 UTC
Doppler velocity at 9.0 degrees elevation

East is up and range rings are 0.3 km
0139 UTC
Reflectivity at 15.0 degrees elevation

0140 UTC
Reflectivity at 5.0 degrees elevation
Reflectivity at 7.0 degrees elevation
Doppler velocity at 11.0 degrees elevation
Reflectivity of concentric eyes at 11.0 degrees elevation

Radar 4.5 km south of Harper, KS
01:59 - 02:19 UTC
Tornado #4, #5, #6


North is up and range rings are 3.5 km
0159 UTC
Doppler velocity at 6.0 degrees elevation
Reflectivity at 6.0 degrees elevation

Tornado #5


North is up and range rings are 5.0 km
0156 UTC
Reflectivity at 7.0 degrees elevation

Tornado #6

North is up and range rings are 2.2 km
0202 UTC
Reflectivity at 4.0 degrees elevation

0215 UTC
Reflectivity at 0.6 degrees elevation

North is up and range rings are 0.2 km
0219 UTC
Doppler velocity at  0.3 degrees elevation

More radar images from a later time period including a tornado with Doppler velocities in excess of 100 m/s (F4 range) will be forthcoming.


Questions and/or Comments:
Curtis Alexander
Research Scientist
National Oceanic and Atmospheric Administration (NOAA)
curtis.alexander@noaa.gov

Dr. Joshua Wurman
Research Scientist
Center for Severe Weather Research
jwurman@cswr.org




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