There are a couple of regional technical communication competitions being held: the STC Carolina 2019-20 Technical Communication Competition and the STC Regional TechComm Competition. Each competition has an approaching deadline: 26 October 2019 and 6 December 2019, respectively. For more details, check out https://www.stc.org/wiki/international-summit-awards/.
If you have questions, contact the individual competition managers. Also, submissions are not limited to community members so feel free to spread the word!