Sun Staff

Wednesday, May 27, 1992 | 6 a.m.

Power was being restored at two downtown casinos today after a late-night thunderstorm left Main Street Station and Union Plaza patrons in the dark.

The National Weather Service forecast more scattered thunderstorms today with a 20 percent chance for rain. Skies are expected to be clear Thursdays with temperatures in the mid 90s.

The 10 p.m. storm that blew across the valley knocked out power to Main Street Station and the Union Plaza was left without electricity when a large transformer blew up. Power was restored to Main Street Station, but crews still working this morning at Union Plaza.

"The Union Plaza is still at partial power," said Nevada Power Company spokesman Michael Schneweis. "A transformer blew up down there and it's a fairly large one, so they'll have to replace that."

Schneweis said power was briefly knocked out at PEPCON Systems Inc. in Henderson. Scattered outages were reported throughout the valley.

The storms left a trace of rain at the airport and .25 inch in the valley's northwest corner.

High winds at Lake Mead beached two houseboats. One houseboat cruising Callville Bay was recovered at Steward's Point and another out of Echo's Bay was beached near Temple Bar.