Translation of "heftig" into English

Ja, volden har i de seneste dage været særlig heftig.

Indeed, the violence in recent days has been particularly acute.

I sommer, da jeg var væk hjemmefra, fejede en heftig regnstorm hen over nabolaget.

Last summer when I was away from home, a fierce wind and rainstorm blew through our neighborhood.

Dette skete sidst i 1940’erne, alt imens Grækenland befandt sig i en heftig borgerkrig.

This was in the late 1940’s when Greece was going through the violent spasms of civil war.