There is no verifiable evidence from the provided sources or recent information confirming a helicopter evacuation order at Los Angeles Harbor.
Los Angeles Harbor right now. Helicopter flying around telling people to evacuate and head to higher ground

WATCH LIVE: NTSB hearing on midair collision near Washington National Airport that left 67 dead - PBS News
Source: pbs.org
Key Evidence
No sources confirm helicopter evacuation orders or emergency alerts at Los Angeles Harbor; the closest related event involves distant Pacific waves after an earthquake with no reported impact on Los Angeles.
barrie360.combarrie360.comPowerful waves travel across Pacific after 8.8-magnitude earthquake The other source concerns a separate helicopter incident unrelated to this claim.
pbs.orgpbs.orgWATCH LIVE: NTSB hearing on midair collision near Washington National Airport...
What the Evidence Shows
The input claims that a helicopter is flying around Los Angeles Harbor instructing people to evacuate and move to higher ground. This suggests an emergency situation, possibly related to a natural disaster such as a tsunami or flood.
However, the search results and structured sources do not provide any information about such an event occurring at Los Angeles Harbor. One source discusses powerful waves across the Pacific following an earthquake near Russia, but there is no mention of impacts or evacuation orders in Los Angeles. Another source relates to an unrelated helicopter accident near Washington National Airport.
Without corroborating reports from local authorities, news outlets, or emergency services about an evacuation at Los Angeles Harbor, this claim cannot be verified based on the available data.