ZLA ARTCC controller reported a military aircraft pilot reported a near miss with a weather balloon.

Attributes
ACN	1366427
Time
Date	201606
Local Time Of Day	1801-2400
Place
Locale Reference	ZLA.ARTCC
State Reference	CA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Military Transport
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 17
Events
Anomaly	Conflict NMAC

Narrative:

Aircraft X reported passing very closely to a weather balloon. He stated it passed between his wingtip and his number one engine. I don't know much about weather balloons but it would be helpful to be able to track them so we could warn aircraft of their presence.

Original NASA ASRS Text

Title: ZLA ARTCC Controller reported a military aircraft pilot reported a near miss with a weather balloon.

Narrative: Aircraft X reported passing very closely to a weather balloon. He stated it passed between his wingtip and his number one engine. I don't know much about weather balloons but it would be helpful to be able to track them so we could warn aircraft of their presence.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.