Jul. 25--The National Weather Service in Tulsa has issued an excessive heat warning for 25 counties in eastern Oklahoma including Tulsa and surrounding counties.

The warning is in effect from noon Saturday through 7 p.m. Monday.

High temperatures are expected to exceed triple digits in the area Saturday, Sunday and Monday with heat index values at 105 to 110 degrees.

The heat index is the apparent temperature when humidity is included.

"An excessive heat warning means that a prolonged period of dangerously hot temperatures will occur," the National Weather Service said. "The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are likely."

-----

To see more of the Tulsa World, or to subscribe to the newspaper, go to http://www.tulsaworld.com.

Copyright (c) 2008, Tulsa World, Okla.

Distributed by McClatchy-Tribune Information Services.

For reprints, email tmsreprints@permissionsgroup.com, call 800-374-7985 or 847-635-6550, send a fax to 847-635-6968, or write to The Permissions Group Inc., 1247 Milwaukee Ave., Suite 303, Glenview, IL 60025, USA.

Story Source: Tulsa World