Beitrag
Meteorological indices for potential occurrence of waterspout/tornado in Hong Kong
Leung, Y.T.; Lam, K.F.; Lau, T.K.; Chan, Y.W.; Chan, Pak Wai
Meteorologische Zeitschrift Vol. 34 No. 2 (2025), p. 81 - 91
veröffentlicht: Aug 14, 2025
Online veröffentlicht: May 5, 2025
Manuskript akzeptiert: Mar 18, 2025
finale Ms. Revision erhalten: Mar 14, 2025
Manuskript-Revision angefordert: Mar 11, 2025
Manuskript erhalten: Jan 13, 2025
Open Access (Arbeit kann kostenlos heruntergeladen werden)
Abstract
Assessment of the potential occurrence of waterspouts and tornadoes in Hong Kong would be crucial in the timely alerting of these hazardous systems. This system provides for the first time a study of the meteorological parameters that may be useful to have an early hinting of the occurrence of such meteorological phenomena in Hong Kong. It turns out that supercell composite parameter (SCP) based on sounding data could be useful in the assessment of relatively strong tornado systems. However, an early assessment of waterspout remains difficult. In particular, bulk Richardson number (BRN) may be a useful indicator, as demonstrated in two examples of waterspouts in Hong Kong, but the indicator itself may not be conclusive and it also has signals for rainstorms in Hong Kong. The usefulness of Szilagyi waterspout nomogram will also be discussed.
Schlagworte
Supercell composite parameter • Significant Tornado Parameter • Bulk Richardson number