I did something similar last year for nina...fwiw
El Ninos (DCA)
Winter
Modoki
Winter Snow
+/- Winter Snow
Winter NAO
Nov Temp
Dec Temp
Nov NAO
Dec NAO
1986-87
Y
31.1"
+
N
-
+
+
+
1991-92
Y
6.6"
-
+
-
+
+
+
1994-95
Y
10.1"
-
+
+
+
N
+
2002-03
Y
40.4"
+
N
-
-
-
N
2004-05
Y
12.5"
-
N
+
N
N
+
2009-10
Y
46"
+
-
+
-
+
-