Narrative:

While attempting to avoid a severe WX system we deviated approximately 140 mi from our planned course. We thought we had cleared the WX and turned on course after no longer painting precipitation on our radar. At this time we hit unexpected severe turbulence for about 20-30 seconds. The passenger were seated, but the flight attendant unfortunately was not. She injured her neck when hitting the ceiling of the aircraft. The turbulence soon stopped. We continued the flight without further incident. The flight attendant was able to perform her duties, but due to her injury, had to be relieved when we reached our destination. I'm submitting this report because I have never experienced turbulence like this in my 9800 hours of flying. At the time it seemed like I was doing the right thing, but now I can see that I didn't. Although I usually have the flight attendant situation down when there is doubt about the possible turbulence, I didn't do it this time. Also, I should have given the clouds greater clearance. I misjudged the WX. This resulted in an injury to our flight attendant and a frightening experience for all of us.

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Original NASA ASRS Text

Title: AN E120 ACR FLC HITS SEVERE TURB AFTER LEAVING AN AREA OF TSTMS AND THEIR CABIN ATTENDANT IS INJURED. THEY THOUGHT THAT THEY HAD FINALLY GOTTEN OUT OF THE TURB WHEN THEY WERE IN CLR AIR.

Narrative: WHILE ATTEMPTING TO AVOID A SEVERE WX SYS WE DEVIATED APPROX 140 MI FROM OUR PLANNED COURSE. WE THOUGHT WE HAD CLRED THE WX AND TURNED ON COURSE AFTER NO LONGER PAINTING PRECIP ON OUR RADAR. AT THIS TIME WE HIT UNEXPECTED SEVERE TURB FOR ABOUT 20-30 SECONDS. THE PAX WERE SEATED, BUT THE FLT ATTENDANT UNFORTUNATELY WAS NOT. SHE INJURED HER NECK WHEN HITTING THE CEILING OF THE ACFT. THE TURB SOON STOPPED. WE CONTINUED THE FLT WITHOUT FURTHER INCIDENT. THE FLT ATTENDANT WAS ABLE TO PERFORM HER DUTIES, BUT DUE TO HER INJURY, HAD TO BE RELIEVED WHEN WE REACHED OUR DEST. I'M SUBMITTING THIS RPT BECAUSE I HAVE NEVER EXPERIENCED TURB LIKE THIS IN MY 9800 HRS OF FLYING. AT THE TIME IT SEEMED LIKE I WAS DOING THE RIGHT THING, BUT NOW I CAN SEE THAT I DIDN'T. ALTHOUGH I USUALLY HAVE THE FLT ATTENDANT SIT DOWN WHEN THERE IS DOUBT ABOUT THE POSSIBLE TURB, I DIDN'T DO IT THIS TIME. ALSO, I SHOULD HAVE GIVEN THE CLOUDS GREATER CLRNC. I MISJUDGED THE WX. THIS RESULTED IN AN INJURY TO OUR FLT ATTENDANT AND A FRIGHTENING EXPERIENCE FOR ALL OF US.

Data retrieved from NASA's ASRS site as of July 2007 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.