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Performance of New Tornado Detection Algorithm

Performance of New Tornado Detection Algorithm. [18 August 2005 – Stoughton, Wisconsin Tornado]. NWA 2006 – Cleveland, OH. Tornado Path. Begin Time: 6:15 p.m. End Time: 7:08 p.m. Path Length: 20 miles Max Width: ½ mile F-scale: F3 Deaths: 1 Injuries: 21.

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Performance of New Tornado Detection Algorithm

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  1. Performance of New Tornado Detection Algorithm [18 August 2005 – Stoughton, Wisconsin Tornado] NWA 2006 – Cleveland, OH

  2. Tornado Path Begin Time: 6:15 p.m. End Time: 7:08 p.m. Path Length: 20 miles Max Width: ½ mile F-scale: F3 Deaths: 1 Injuries: 21 Courtesy: NWS Milwaukee/Sullivan

  3. TelePATH Data • Algorithms created jointly by Weather • Decision Technologies (WDT) • and the NSSL • Algorithms available for display in • ESP:LIVE from Weather Central

  4. TelePATH Data • FunnelPATH Key Variables • “Prob of Tornado” – indicates Probability • of Tornado • >30% is a significant concern • Most common range 20% - 60% • Utilizes “Neural Network”

  5. TelePATH Data • FunnelPATH Key Variables • “Tornado Strength Index” – • dimensionless strength index for • tornadic circulation • >5000 indicates a significant • tornado threat

  6. TelePATH Data • MesoPATH Key Variables • “Meso Strength Index” – indicates • dimensionless strength index for a • mesocylcone • >3000 is a moderate mesocyclone • >3500 is a significant mesocyclone • “Meso Base” – mesocyclone base height • “Meso Depth” – mesocyclone depth

  7. Level II NexRad Base Reflectivity and Base Velocity at Tornado Touchdown 2315 UTC

  8. Mesocyclone Locations Associated with SuperCell 2315 2254 2205

  9. Mesocyclone Locations Associated with SuperCell 0015 2315 2254

  10. Performance of New Tornado Detection Algorithm [18 August 2005 – Stoughton, Wisconsin Tornado] NWA 2006 – Cleveland,OH

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