Narrative:

During climb to FL360 (.70M 1800 FPM); encountered a very hard 'hit' of what felt like wake turbulence. Encountered a very brief and rapid positive loading; followed by a very brief and rapid negative loading. It felt like we drove over a speed-bump at 410 knots; it was that rapid and hard. Flight crew members and passengers were restrained by shoulder/lap harnesses. We asked ATC if there were any 'heavy' aircraft proximate to us. They advised there was a B757-200 15 NM to our northwest (1:00-2:00 relative position). FMS computed winds aloft at FL340 were from the north at 21 knots. No injuries and no damage to aircraft.

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Original NASA ASRS Text

Title: HS-125 Captain reported encountering wake turbulence climbing through FL340; probably from a B757 15 NM to their northwest.

Narrative: During climb to FL360 (.70M 1800 FPM); encountered a very hard 'hit' of what felt like wake turbulence. Encountered a very brief and rapid positive loading; followed by a very brief and rapid negative loading. It felt like we drove over a speed-bump at 410 knots; it was that rapid and hard. Flight crew members and passengers were restrained by shoulder/lap harnesses. We asked ATC if there were any 'heavy' aircraft proximate to us. They advised there was a B757-200 15 NM to our NW (1:00-2:00 relative position). FMS computed winds aloft at FL340 were from the north at 21 knots. No injuries and no damage to aircraft.

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.