By extending the charged Vaidya metric to cover all of spacetime, we obtain
a Penrose diagram for the formation and evaporation of a charged black hol
e. In this construction, the singularity is time-like. The entire spacetime
can be predicted from initial conditions if boundary conditions at the sin
gularity are known. (C) 1999 Published by Elsevier Science B.V. All rights
reserved.