Top 10 Snowstorms(1950-2018) Pittsburgh, PA
Pittsburgh International Airport(KPIT)
Storm Event	Snowfall(inches)	NAO(7-day Average)	PNA(7-day Average)	AO(7-day Average)	ENSO**	PDO(monthly)	MJO(daily)
November 24-26, 1950	27.4	11/20 to 11/26 = -1.246	11/20 to 11/26 = -1.151	11/20 to 11/26 = -1.968	Weak La Nina	Moderate Negative	N/A
March 12-14, 1993	25.3	3/8 to 3/14 = 0.148	3/8 to 3/14 = -0/153	3/8 to 3/14 = 0.792	Neutral	Weak Positive	Phase 4
February 5-6, 2010	21.1	1/31 to 2/6 = -0.463	1/31 to 2/6 = 0.523	1/31 to 2/6 = -3.499	Moderate El Nino	Weak Positive	Phase 7
March 5-6, 1962	15.7	2/28 to 3/6 = -1.516	2/28 to 3/6 = -0.779	2/28 to 3/6 = -3.623	Neutral	Moderate Negative	N/A
January 12-13, 1964	15.6	1/7 to 1/13 = -0.799	1/7 to 1/13 = 0.254	1/7 to 1/13 = -0.076	Weak El Nino	Neutral	N/A
January 22-23, 1966	14.4	1/17 to 1/23 = -1.537	1/17 to 1/23 = 0.233	1/17 to 1/23 = -3.428	Moderate El Nino	Weak Negative	N/A
December 1-2, 1974	14.3	11/26 to 12/2 = -0.210	11/26 to 12/2 = 0.302	11/26 to 12/2 = -1.083	Weak La Nina	Neutral	Phase 7
January 19-21, 1978	14.0	1/14 to 1/20 = 0.529	1/14 to 1/20 = 0.240	1/14 to 1/20 = -0.032	Weak El Nino	Neutral	Phase 3 and 4
February 16-17, 2003	14.0	2/11 to 2/17 = 0.789	2/11 to 2/17 = 0.487	2/11 to 2/17 = 0.202	Weak El Nino	Strong Positive	Phase 7 and 8
January 3-4, 1994	13.9	12/29 to 1/4 = 0.421	12/29 to 1/4 = 0.105	12/29 to 1/4 = -0.877	Neutral	Weak Positive	Phase 5 and 7
March 2-4, 1960	12.8	2/27 to 3/4 = -0.137	2/27 to 3/4 = -0.786	2/27 to 3/4 = -1.535	Neutral	Neutral	N/A
February 13-14, 1960	12.3	2/7 to 2/13 = -1.207	2/7 to 2/13 = -0.042	2/8 to 2/13 = -1.791	Neutral	Weak Positive	N/A