Growing evidence suggests that with the progression of climate warming, there is a notable rise in the intensity of precipitation from heavy rainstorms, particularly in the eastern regions of the United States. This study relies on a sub-daily approach to examine intense rainfall from the remnant of Hurricane Ida over the northeast US, which brought record amounts of rainfall and created a flash flood emergency on the East Coast on September 1, 2021. A dynamically downscaled and thermodynamically modified model dataset from 2020 to 2099 is used. Ongoing research leverages the high-resolution downscaled product to understand the changes in the intensity of the sub-daily heavy downpours comparable to those experienced during the remnants of Hurricane Ida as a function of thermodynamic changes. The study provides insights into the impacts of warming signals on storm remnants that can result in unprecedented short-duration intense rainfall, leading to extensive flooding.