This paper studies the finite time explosion of the stochastic heat equation $\frac{\partial u}{\partial t}(t,x)=\frac{\partial^2}{\partial x^2} u(t,x)+(u(t,x))^β+σ(u(t,x))\dot{W}(t,x)$. We consider an interval $D=[-π,π]$ under periodic boundary condition where $\dot{W}(t,x)$ is a space-time white noise and $σ(u)\approx u^γ$ near $\infty$. Our results refine existing results by identifying behavior in a previously less understood regime, where we show that if $β\in(1,3),γ\in(\fracβ{2},\frac{β+3}{4})$ or $β>1,γ\in(0,\fracβ{2}]$ then mild solutions can explode with positive probability. This paper provides a partial characterization of the explosion behavior in an intermediate parameter regime, and contribute to the understanding of the interplay between the drift and diffusion terms.