Press Releases

    LAS VEGAS, Sept. 16 /PRNewswire-FirstCall/ -- The Board of Directors for
Southwest Gas Corporation (NYSE: SWX) has declared the following fourth
quarter cash dividend:

                              Common Stock
                 Payable                       December 1, 2008
                 Of Record                     November 17, 2008
                 Dividend                      $.225 per share

The dividend equates to 90 cents per share on an annualized basis. The Company has paid quarterly dividends continuously since going public in 1956.

About Southwest Gas

Southwest Gas Corporation provides natural gas service to over 1.8 million customers in Arizona, Nevada, and California. For more information about Southwest Gas, please visit http://www.swgas.com.

This press release may contain statements which constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 (Reform Act). All such forward-looking statements are intended to be subject to the safe harbor protection provided by the Reform Act. A number of important factors affecting the business and financial results of the Company could cause actual results to differ materially from those stated in the forward-looking statements. These factors include, but are not limited to, the impact of weather variations on customer usage, customer growth rates, the effects of regulation/deregulation, the timing and amount of rate relief, and changes in rate design.

SOURCE  Southwest Gas Corporation
    -0-                             09/16/2008
    /CONTACT:  Media, Cynthia Messina, +1-702-876-7132, or Shareholder, Ken
Kenny, +1-702-876-7237, both of Southwest Gas Corporation/
    /Web site:  http://www.swgas.com /
    (SWX)

CO:  Southwest Gas Corporation
ST:  Texas
IN:  OIL
SU:  DIV

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0577 09/16/2008 17:00 EDT http://www.prnewswire.com