Widebody; Low Wing; 3 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Weather / Turbulence
Aircraft Aircraft Damaged; Flight Crew Took Evasive Action
Human Factors; Weather; Aircraft
During cruise at FL360 just NE of TCC VOR; we were encountering continuous light turbulence with nothing painting on the radar. It was dark and no reports of significant weather. Then the turbulence started getting significantly worse and we began experiencing St Elmo's Fire on the windows. A quick glance at the radar still revealed nothing. The Captain switched radar systems and lowered the tilt angle. This revealed a return directly in our path. A rapid deviation to the south of course resulted in avoiding the main body of the storm; however we experienced continuous moderate turbulence bordering on severe and what I thought was heavy rain; but turns out must have been hail. Nearly as quick as it started; it was over and we were in the clear. After the encounter; we experienced an airspeed disagreement between Captain and First Officer systems of about 5-6 knots. We compared the separate systems with the stand by system and found the First Officer's airspeed faster than the other two; which I believe was the cause of a momentary overspeed warning. Also shortly thereafter; the #2 Eng Anti-Ice Disagree illuminated with anti-ice in the on position. We were no longer in the icing conditions; so we turned the system off; and the disagree extinguished. After landing we witnessed damage to the nose radome; and the leading edge wing filet area.With the darkness of night; an un-forecasted storm cell and the radar tilt set a little high (about 4.5). We inadvertently entered an unexpected area of severe weather.
A flight crew inadvertently entered unforecasted weather at cruise and encountered turbulence and hail.  Some damage to the radar dome and a wing fillet resulted.