HUGE ufo , spherical w/translucent force-field self illumined hour&1/2, 100's witness

This UFO appeared in the sky as a second moon.  After watching it for an half an hour it began to move slowly down to a point above the Van Duzen river then followed it to the junction of the Eel River.  It then proceeded down the Eel river to just past Fernbridge where it fired off three long translucent bolts reminding one of the O in morse code.  When it came closer approx 1000 ft or so above the river-bed it was HUGE.
In passing, it lit up the entire vally.  It also had a force field around it, that was clear excpt for the edge of it which appeared very bright.  We could see the stars through the force-field.   Calling the police and fire Dept.'s, the lines were busy till 430 a.m. ... no wat in.
Date of sightng may be approximate, although the witness does not indicate that fact.  PD