The most powerful Very High Frequency (VHF; 30-300 MHz) signals from thunderstorms have been known for several years to be associated with a class of intracloud discharges that appears to be distinct both phenomenologically [Jacobson, 2003a; Jacobson, 2003b; Jacobson and Light, 2003; Le Vine, 1980; Light and Jacobson, 2002; Massey and Holden, 1995; Massey et al., 1998; Willett et al., 1989] and in underlying physical process [Gurevich et al., 1999]. In this contribution I will review the observations pertaining to this class of discharges. The goal is to clarify the relevance of this class of intracloud discharge to remote sensing of severe storms.

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