Your desire to help is commendable. Here are some possible ways for you and your friends to help as minors, if not for this disaster, for the next one:
The American Red Cross:
Allows 14+, check them out perhaps, with your guardian's consent maybe get involved there, or join as a family. Their duties are probably the most relevant of your options to the current issues related to the outbreak.
https://www.redcross.org/local/washington/volunteer.html
Fire Cadets - Some departments may allow youth members, look up the ones near you. Fairly relevant to current crisis.
Police Explorer programs - may help with outbreak-associated chaos, among other things:
Sheriff https://www.facebook.com/pg/ThurstonCountyExplorers/photos/?ref=page_internal
OPD http://olympiawa.gov/city-services/police-department/volunteer-programs.aspx
Lacey https://www.facebook.com/LaceyPoliceExplorers/
Civil Air Patrol - not sure what they'd do during this, but perhaps worth asking them:
https://www.facebook.com/SouthSoundCompositeSquadron
JROTC units might be somehow working on this, but the schools are closed and I know little about them or how you'd get involved at this point.
Once this passes, http://tcwesar.com/index.html is a thing if you are interested in helping with disasters and finding lost people, but they aren't really working on the outbreak currently and there's a lot of training involved.
TCDART https://www.thurstoncountywa.gov/em/Pages/org-dart.aspx is 18+ and worth a look once you're older. In other counties CERT-type programs https://www.ready.gov/cert may be open to minors. Get trained if you can.
If none of those options are suitable, perhaps your best bet is teaming up with your parents, adult relatives, or trusted adults with your parents permission, and supporting them in helping others. Food and supply donations and deliveries to elderly, sick, and vulnerable community members may be helpful.
Your peers could probably use emotional support (https://en.wikipedia.org/wiki/Psychological_first_aid) in grappling with this. Perhaps learn more about preparedness and survival skills (prudent these days to be a bit of a prepper, just keep it reasonable and focus on realistic issues and perspectives). By learning some peer support skills and prep skills, you can help your friends, their families, and community members to increase their health and resilience, which is important as more disruption could occur to due to the outbreak, and we're also more vulnerable should a different disaster occur on top of this.
If you're hunkered down and can't go anywhere, here are some other things you could work on so you can better help folks when you have the opportunity to do so:
- Work out at home without much equipment (www.mtntactical.com / https://www.youtube.com/user/mountainathlete) and learn relaxation (https://www.youtube.com/user/yogawithadriene)
- Study medical skills (https://www.coursera.org/specializations/become-an-emt) (https://www.youtube.com/playlist?list=PLbXdv5N6doMvvb4R6_E4Kdo5xeXL2CNJL)
- Make a victory garden (https://en.wikipedia.org/wiki/Permaculture)
- Become an amateur radio technician (http://www.arrl.org/licensing-education-training)
- Study disaster preparedness topics (https://training.fema.gov/is/crslist.aspx)
- Continue or expand your schooling (https://www.khanacademy.org/) (https://www.youtube.com/user/crashcourse/playlists)
You can learn a lot for free, and you can carry skills with you wherever you go, unlike supplies which use resources or can be lost. There will be more disasters, even if you feel sidelined for this one you can prepare for the next. If you take care of you and better yourself, that's one less person who needs treatment or rescue, and you can one day offer your excess strength to help others in their time of need.