NH Monthly 700 mb Winter (Oct-Mar) Height Anomalies (Courtesy CDC)

El Nino since 1980-81

• October-March 700 Mb Departures, 1982-1983
• October-March 700 Mb Departures, 1987-1988
• October-March 700 Mb Departures, 1991-1992
• October-March 700 Mb Departures, 1992-1993
• October-March 700 Mb Departures, 1993-1994
• October-March 700 Mb Departures, 1994-1995
• October-March 700 Mb Departures, 1997-1998

La Nina since 1980-81

• October-March 700 Mb Departures, 1988-1989
• October-March 700 Mb Departures, 1995-1996 (very weak La Nina)
• October-March 700 Mb Departures, 1996-1997 (weak "almost" La Nina)
• October-March 700 Mb Departures, 1998-1999

Neither Nina/Nino, since 1980-81

• October-March 700 Mb Departures, 1980-1981
• October-March 700 Mb Departures, 1981-1982
• October-March 700 Mb Departures, 1983-1984
• October-March 700 Mb Departures, 1984-1985
• October-March 700 Mb Departures, 1985-1986
• October-March 700 Mb Departures, 1986-1987
• October-March 700 Mb Departures, 1989-1990
• October-March 700 Mb Departures, 1990-1991
• October-March 700 Mb Departures, 1996-1997 (a weak La Nina)