THE PILOT WAS FLYING A NIGHT CROSS-COUNTRY WHEN HE ENCOUNTERED TURBULENCE AND HEAVY RAIN. HE SAID THAT HE BECAME DISORIENTED BECAUSE OF THE DARKNESS AND WEATHER. HE SAID THAT HE COULD NOT SEE HIS MAGNETIC COMPASS BECAUSE HE COULD NOT FIND HIS GLASSES. HE SAID THAT HE DID NOT KNOW HOW MUCH TIME HE HAD BEEN FLYING BECAUSE HE LOST HIS WATCH AND THE AIRCRAFT'S CLOCK WAS INOPERABLE. AFTER FLYING AROUND DISORIENTED FOR AN UNKNOWN AMOUNT OF TIME, HE CONTACTED AN AIR TRAFFIC CONTROL FACILITY FOR ASSISTANCE. ABOUT FIVE MINUTES AFTER HE CONTACTED THEM, THE AIRCRAFT RAN OUT OF FUEL. THE PILOT ENTERED A FORCED LANDING DESCENT. HE LANDED HARD ON THE NOSE GEAR AND THE AIRCRAFT NOSED OVER. FAA INSPECTORS EXAMINED THE AIRCRAFT AND FOUND LESS THAN ONE CUP OF FUEL REMAINING IN THE FUEL TANKS. NO EVIDENCE OF FUEL LEAKAGE COULD BE FOUND.