Factors Favorable For Warm Season / Convective Flash Flooding
Strong low-level jet (>30 (20) kts) / θe advection.
Weak mid-level winds / weak mid-level shear.
Deep warm cloud layer (greater than 3 km).
Moderate – high "skinny" CAPE south of the heavy rain (NCAPE < 0.10).
Precipitable Water > 130 percent of normal.
Weak short-wave trof upstream of heavy rain.
Upper-level divergence / jet entrance region.