Press Releases

LAS VEGAS, July 31 /PRNewswire-FirstCall/ -- Senior management of Southwest Gas Corporation (NYSE: SWX) is holding a conference call to discuss Southwest's 2008 second quarter and twelve-month results on Thursday, August 7, 2008.

The conference call will follow the release of Southwest's earnings results on Wednesday, August 6, 2008.

The call will also be webcast live on Southwest's website at http://www.swgas.com.

    DATE:                THURSDAY, AUGUST 7, 2008
    TIME:                1:00 P.M. (ET)
    Telephone number:    800-435-1398
    International
      telephone number:  617-614-4078
    Pass code:           29467916

A digital replay of the call can be accessed beginning at 3:00 p.m. (ET) on August 7, 2008 by dialing 888-286-8010 or 617-801-6888 for international calls; passcode: 56785122. The replay and webcast will be available through the close of business on Friday, August 29, 2008.

(Southwest Gas recommends the free download of Windows Media(R) Player 10 Series found at http://www.microsoft.com/windows/windowsmedia/default.aspx and at least a 56 kbps connection to the Internet. If you have "pop-up" blocking software installed, please press the CTRL key when you click the Register button. Please contact your network operations group if you are unable to override this feature.)

SOURCE Southwest Gas Corporation
-0- 07/31/2008
/CONTACT: Shareholders, Ken Kenny of Southwest Gas Corporation, Las
Vegas, NV, +1-702-876-7237/
/Web site: http://www.swgas.com /
(SWX)