Audra is a Lithuanian word for "thunderstorm" — and independently a 20th-century American respelling of Audrey, from the Old English æðel (noble) + þryð (strength). Married actor Will Swenson in 2012.
Audra does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Audra reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.