CPR JET HITS SNOW BERM AT END OF APCH RWY IN LNDG PROC LNDG UNDERSHOT.

Narrative

I WAS COPLT ON CITATION II DURING ILS APCH TO RWY 32. INFLT VISIBILITY WAS 1-2 MI IN SNOW AND BLOWING SNOW. CAPT CALLED RWY IN SIGHT ABOUT 1 1/2 MI FROM RWY WITH ACFT ON GLIDEPATH AND CTRED ON ILS. CAPT SAID HE WAS TRANSITIONING OUTSIDE; SO I TRANSITIONED INSIDE AND CONTINUED AIRSPD CALLOUTS AND DSCNT RATES AS PER COMPANY PROCS. OCCASIONALLY I LOOKED OUT PRIOR TO TOUCHDOWN AND NOTICED RWY LIGHTS VISIBLE AHEAD WITH ACFT CTRED. NOTICED NOTHING ABNORMAL -- ALL ROUTINE. ACFT; AT TOUCHDOWN; EXPERIENCED RAPID DECELERATION. I LOOKED OUTSIDE AND NOTICED WE WERE ON VERY END OF RWY. ABNORMAL DECELERATION LASTED ONLY A SECOND AND THEN THE REST OF ROLLOUT WAS NORMAL. WE HAD LANDED ON VERY FIRST FEW FT OF RWY IN PLOWED SNOW RIDGE. NO DAMAGE TO ACFT. UPON TAXI OUT FOR DEP; WE NOTICED PLOWS HAD PUSHED SNOW 18 INCHES DEEP AT FIRST 20 FT OF RWY AND OBSCURED THRESHOLD LIGHTS. AFTER GOING CONTACT; CAPT SIMPLY LET ACFT GET BELOW GLIDE PATH AND; WITH BLOWING SNOW AND NO THRESHOLD LIGHTS TO MARK END OF RWY; LANDED EARLY. MORAL: STAY ON GS EVEN IF VISUAL. SUPPLEMENTAL INFO FROM ACN 261625: A COMBINATION OF BETTER SNOW REMOVAL AND FLYING LONGER BY REF TO FLT INSTS BEFORE TRANSITIONING TO VISUAL WOULD ALL HAVE HELPED TO PREVENT THIS CIRCUMSTANCE.