ROTATE 2006 |
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R
adar
O
bservations of
T
ornadoes
A
nd
T
hunderstorms
E
xperiment 2006
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Highlights |
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The main focus of ROTATE-2006 will be obtaining extremely
high resolution winds in the
lowest levels of tornadoes, by
deploying
close to the tornadoes, as opposed the dual-Doppler deployments typical of past years.
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ROTATE-2006 will have no fixed base.
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ROTATE-2006 will be providing guidance to the TIV team in their efforts to obtain in situ IMAX film and scientific data in the region very near tornadoes. The paramount objective will be TIV safety and avoidance of the most intense winds in violent tornadoes. Combination of DOW (10-30 m AGL minimum) and TIV data (3 m AGL) permits us to map low level winds in tornadoes.
Summary of 12 June 2005 DOW/TIV intercept of a tornado
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Project Status |
This update: 1300 MDT 29 June 2006
29 June: End Of Season: DOWN
30 June-30 April: DOWN
01 May 2007: STANDBY
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Weather |
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Climatologically, conditions are unfavorable for tornadoes in the ROTATE domain until spring 2007. |
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2006 Data and Logs |
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2006 Tornado intercept (w/ DOW data):
2 |
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2006 Tornado intercepts (w/ DOW and TIV data):
0 |
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Mission Logs |
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#1: Testing mission to Loup City, Nebraska region. Collected some test data in line of convection with some uninteresting mesocyclones.
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#2 Long shot mission to Rock Falls, Illinois, the farthest east that DOWs have ever gone in pursuit of supercells. Intercepted developing storm at south end of line that extended to Wisconsin. Storm matured slowly and became part of the line. Only weak mid level rotation was observed.
#3.
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#4.
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#5.
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#6.
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31 May: Finally, a weak tornado, actually two. Translated radar data has been examined in solo and the tornado has been confirmed. Peak winds of 35-40 m s-1 with shear of 50 m s-1 over 500 m was observed at altitudes down to < 10 m agl. The tornado formed at the tip of the long hook and produced a classic coiled bulb of reflectivity. It had a multiple-vortex structure with the strongest circulation/shear extending across 600 m with embedded smaller couplets. A clear reflectivity eye was associated with the tornado., with approx 35 m/s winds and about 45 m/s dv observed by radar at the surface from a range of 800 m. At times the velocity couplet tightened to 50-100 m diameter. The duration of the event was about from 2205-2209 UTC. A short lived tornado preceded this, from 2158-2159, with peak winds of approx 30 m s-1. This disspiates several minutes before the 2nd genesis.
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#Several more fruitless drives across the Plains.
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11 June: Mission coordinated with TTU, thermodynamic and radar data collected in supercell south of Scottsbluff, NE. A preliminary review of radar data did not reveal any tornado in the tight near surface shear region.
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More hopeless zig zagging from MT to OK. DOW/TIV fleet experienced 46 m/s 3-m breeze near Glendive, MT, causing some minor damage to accompanying vehicles.
Map of all ROTATE-2005 missions (through 12 June)
Location of mesocyclone-associated tornadoes in which data were collected by ROTATE-2005 (through 12 June)(excludes landspouts, gustnadoes, multiple-"touchdowns" of the same tornado, and the like, as well as events in which radar data were not collected) |
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System Status |
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DOW2: |
Down |
Boulder, CO |
Not Participating |
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DOW3: |
Up |
Boulder, CO |
READY |
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SCOUT: |
Up |
Boulder, CO |
READY |
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ROTATE Description
DOW Home Page |
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