If you call NVC you can give them you USCIS number they can tell you if they have received your case or not. You can also ask for your NVC Case number to track it online. That way you can check the status on CEAC and see whether it is "AT NVC", "IN TRANSIT" or "READY" . They usually wont send you an email until they have forwarded your case to the embassy but if your embassy is closed then they wouldn't it so it SHOULD be still "AT NVC" status. Hopes this helps!!
DISCLAIMER: I am giving advice on my own experience.
shawnnguyen508 got a reaction from BHEN in NVC notification