Table 2: Mean environmental indices prior to, during, and after MCS progression through the NPOL domain for each case type. LL indicates low-level and in this circumstance is a 0–5 km value. R is the Bulk Richardson number.

CAPE (J kg−1)LL CAPE (J kg−1)CIN (J kg−1)LFC hgt (km)R

Pre-MCS
TCP2290335−220.621.9
NTCP1555250−732.023.2
During-MCS
TCP1549276−832.615.9
NTCP1899407−221.542.5
Post-MCS
TCP555157−1242.342.1
NTCP660164−1522.514.7