*Season goes from December to March*
*ENSO Strenth based off Oceanic-Nino Index*
Colors: Red= Warm or Postiive Phase, Blue= Cold or Negative Phase, Green= Neutral Phase
| Washington, DC | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Snowfall | Climate Pattern Season Average | |||||||||
| NAO | PNA | AO | PDO | EPO | ENSO | ||||||
| SOI | Nino 3.4 | Strength | |||||||||
| 1972/1973 | 0.1" | 0.345 | 0.057 | 0.948 | -0.48 | 0.20 | -7.0 | 1.51 | Strong El Nino | ||
| 1997/1998 | 0.1" | 0.047 | 0.950 | -0.647 | 1.27 | 0.40 | -20.1 | 2.03 | Strong El Nino | ||
| 2019/2020 | 0.6" | 1.202 | -0.515 | 2.083 | -1.16 | N/A | -2.9 | 0.54 | Weak El Nino | ||
| 2011/2012 | 2.0" | 1.345 | 0.455 | 0.751 | -1.27 | 1.30 | 9.5 | -0.74 | Weak La Nina | ||
| 1975/1976 | 2.2" | 0.357 | -0.658 | 0.891 | -1.39 | 0.77 | 14.4 | -1.48 | Strong La Nina | ||
| 2012/2013 | 3.1" | -0.385 | 0.007 | -1.637 | -0.42 | 0.11 | -0.1 | -0.28 | Neutral | ||
| 2001/2002 | 3.2" | 0.350 | -0.160 | 0.566 | -0.43 | 0.28 | -1.0 | -0.09 | Neutral | ||
| 2016/2017 | 3.4" | 0.675 | 0.095 | 1.108 | 0.85 | N/A | 1.7 | -0.11 | Neutral | ||
| 1980/1981 | -4.5" | 0.220 | 1.032 | -0.537 | 0.74 | -0.65 | 1.7 | -0.38 | Neutral | ||
| 2007/2008 | 4.9" | 0.510 | 0.000 | 0.791 | -0.76 | 0.94 | 15.5 | -1.47 | Moderate La Nina | ||