narrow cold-frontal rainbands

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Time-compositing analysis Temperature 1430 UTC 29 Nov 2011 • Off-analysis-time data translated in space using radarobserved NCFR velocity System velocity • Time-compositing applied up to±40 minutes from analysis time • Assumes NCFR evolves slowly relative to compositing period
A tornadic case: 29 Nov 2011 100 km • Large (near 90 º ) wind veer • Post-frontal wind speed ≈ Prefrontal wind speed • Strong pressure increase postfront • Maximum in post-frontal wind speeds behind bulging section of line Tornado Wind damage
Page 1 and 2: Surface wind and pressure fields at
Page 3 and 4: NFR updraughts are forced (mainly)
Page 5: What is different about the tornadi
Page 9 and 10: Tornadic lines are associated with
Page 11 and 12: Increases in stretching prior to to
Page 13 and 14: 23 Dec 2011: evolution of post-fron
Page 15 and 16: 23 Dec 2011: misocyclone tracks Blu
Page 17 and 18: 25 Jan 2014: evolution of post-fron
Page 19 and 20: 25 Jan 2014: development of misocyc
Page 21 and 22: 25 Jan 2014: development of misocyc

narrow cold-frontal rainbands

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