This is according to my friend, who is 4 down from the hanger where the fire started:
The fire started around 1:30 p.m. in a hanger that had not been entered in about two weeks. It totally destroyed that airplane (a 182) and damaged 4 others, including an RV-12 and, he believes, an RV-7 or 9. All of the plastic was burned off the RVs with the canopies melting into the interiors. It caused considerable damage to one wing of a Piper Warrior and another unknown plane. His hanger had heat damage obvious at the ceiling, but, other than a layer of soot on the horizontal surfaces of his 172, no damage. Same for the airplane behind his. No cause yet determined, but the fire started inside the hanger. No evidence of a trickle charger or anything else plugged into the outlet in the hanger. There were several propane tanks in the hanger, which they speculate may have contributed to the size of the fire. All in all, he was very lucky. Others, not so much.