What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The pilot landed on runway 3 at Spokane int'l airport under special VFR at night on a snow-covered runway with visibility obscured by mist. After landing he misjudged the turn-off point and turned off just before the actual edge of taxiway foxtrot. The aircraft remained on the pavement but got stuck in a shallow snow berm along the edge of the runway. The pilot initiated a turn back to the runway but did not have enough speed to plow through the snow. When the aircraft became stuck the pilot notified the tower and shut down the engine. The aircraft was pushed back and returned to the ramp with no damage.
As the FAA filed it
(-23) THE PILOT LANDED ON RUNWAY 3 AT SPOKANE INT'L AIRPORT UNDER SPECIAL VFR AT NIGHT ON A SNOW-COVERED RUNWAY WITH VISIBILITY OBSCURED BY MIST. AFTER LANDING HE MISJUDGED THE TURN-OFF POINT AND TURNED OFF JUST BEFORE THE ACTUAL EDGE OF TAXIWAY FOXTROT. THE AIRCRAFT REMAINED ON THE PAVEMENT BUT GOT STUCK IN A SHALLOW SNOW BERM ALONG THE EDGE OF THE RUNWAY. THE PILOT INITIATED A TURN BACK TO THE RUNWAY BUT DID NOT HAVE ENOUGH SPEED TO PLOW THROUGH THE SNOW. WHEN THE AIRCRAFT BECAME STUCK THE PILOT NOTIFIED THE TOWER AND SHUT DOWN THE ENGINE. THE AIRCRAFT WAS PUSHED BACK AND RETURNED TO THE RAMP WITH NO DAMAGE.