Heat Warnings Friday From Ohio to Maine

July 22, 2011 - 6:45 AM

NEW YORK (AP) - The extreme heat that's been roasting the eastern U.S. is only expected to get worse, and residents are bracing themselves for temperatures near and above boiling point.

Weather service heat warnings and advisories have been issued Friday from Ohio to Maine.

The high temperatures and smothering humidity will force up the heat indexes. Boston's 99 degrees on Friday could feel like 105 degrees; Philadelphia's 102 degrees like 114 degrees and Washington, D.C.'s 103 degrees may seem the same as a melting 116 degrees.

Many cities have opened cooling centers.