Southwest Gas 10-Q 2005 Q3 Quarterly report

EXHIBIT 12.1

SOUTHWEST GAS CORPORATION
COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES
(Thousands of dollars)

	For the Twelve Months Ended
	Sep 30,		December 31,
	2005		2004		2003		2002		2001		2000
1. Fixed charges:
A) Interest expense	$	87,177	$	84,138	$	78,724	$	79,586	$	80,139	$	70,659
B) Amortization		3,589		3,059		2,752		2,278		1,886		1,564
C) Interest portion of rentals		6,465		6,779		6,665		8,846		9,346		8,572
D) Preferred securities distributions		--		--		4,015		5,475		5,475		5,475
Total fixed charges	$	97,231	$	93,976	$	92,156	$	96,185	$	96,846	$	86,270
2. Earnings (as defined):
E) Pretax income from
continuing operations	$	84,781	$	87,012	$	55,384	$	65,382	$	56,741	$	51,939
Fixed Charges (1. above)		97,231		93,976		92,156		96,185		96,846		86,270
Total earnings as defined	$	182,012	$	180,988	$	147,540	$	161,567	$	153,587	$	138,209
		1.87		1.93		1.60		1.68		1.59		1.60