| Top Snowstorms(Dec. to March 1950-2020) Philadelpha, P.A. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Philadlephia International Airport(KPHL) | |||||||||
| Storm Event | Snowfall(inches) | Liquid | Snow Ratio | NAO(7-day Average) | PNA(7-day Average) | AO(7-day Average) | ENSO** | PDO(monthly) | MJO(daily) |
| January 7-8, 1996 | 30.7 | 1.55 | 19.8/1 | 1/2 to 1/8 = -0.925 | 1/2 to 1/8 = 0.245 | 1/2 to 1/8 = -1.644 | Weak La Nina | Weak Positive | Phase 1 |
| February 5-6, 2010 | 28.5 | 2.40 | 11.9/1 | 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 |
| December 19-20, 2009 | 23.2 | 1.75 | 13.3/1 | 12/14 to 12/20 = -1.843 | 12/14 to 12/20 = 0.212 | 12/14 to 12/20 = -4.185 | Moderate El Nino | Neutral | Phase 7 and 8 |
| January 22-23, 2016 | 22.4 | 1.60 | 14/1 | 1/17 to 1/23 = -0.329 | 1/17 to 1/23 = 1.161 | 1/17 to 1/23 = -2.079 | Strong El Nino | Strong Positive | Phase 2 |
| February 11-12, 1983 | 21.3 | 1.87 | 11.4/1 | 2/6 to 2/12 = -0.527 | 2/6 to 2/12 = 0.717 | 2/6 to 2/12 = -2.416 | Strong El Nino | Positive | Phase 2 and 3 |
| February 16-17, 2003 | 18.7 | 1.32 | 14.2/1 | 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 |
| February 9-10, 2010 | 15.8 | 1.65 | 9.6/1 | 2/4 to 2/10 = -0.936 | 2/4 to 2/10 = 0.786 | 2/4 to 2/10 = -4.597 | Moderate El Nino | Weak Positive | Phase 8 |
| January 26-27, 2011 | 15.1 | 1.62 | 9.3/1 | 1/21 to 1/27 = -0.684 | 1/21 to 1/27 = 1.124 | 1/21 to 1/27 = -1.187 | Moderate La Nina | Weak Negative | Phase 8 |
| December 11-12, 1960 | 14.6 | 1.42 | 10.3/1 | 12/6 to 12/12 = -0.168 | 12/6 to 12/12 = 1.482 | 12/6 to 12/12 = -0.885 | Neutral | Neutral | N/A |
| February 18-19, 1979 | 14.3 | 1.05 | 13.6/1 | 2/13 to 2/19 = -0.280 | 2/13 to 2/19 = -0.515 | 2/13 to 2/19 = -0.263 | Neutral | Negative | Phase 3 and 4 |
| February 6-7, 1978 | 14.1 | 0.81 | 17.4/1 | 2/1 to 2/7 = 0.116 | 2/1 to 2/7 = 1.011 | 2/1 to 2/7 = -4.494 | Weak El Nino | Positive | Phase 7 and 8 |
| January 21, 2014 | 13.5 | 0.70 | 19.3/1 | 2/1 to 2/7 = -0.007 | 2/1 to 2/7 = 1.089 | 2/1 to 2/7 = -1.722 | Neutral | Neutral | Phase 6 |
| January 19-20, 1978 | 13.2 | 2.28 | 5.8/1 | 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 |
| January 19-20, 1961 | 13.2 | 1.10 | 12/1 | 1/14 to 1/20 = 0.227 | 1/14 to 1/20 = 1.296 | 1/14 to 1/20 = -1.116 | Neutral | Positive | N/A |
| February 15-16, 1958 | 13.0 | 1.27 | 10.3/1 | 2/10 to 2/16 = -0.513 | 2/10 to 2/16 = 0.794 | 2/10 to 2/16 = -1.725 | Moderate El Nino | Weak Positive | N/A |
| December 24-25, 1966 | 12.7 | 1.11 | 11.5/1 | 12/19 to 12/25 = 0.304 | 12/19 to 12/25 = 0.564 | 12/19 to 12/25 = -1.875 | Neutral | Neutral | N/A |
| January 22-23, 2005 | 12.6 | 1.02 | 12.4/1 | 1/17 to 1/23 = 0.891 | 1/17 to 1/23 = 0.720 | 1/17 to 1/23 = -0.570 | Weak El Nino | Neutral | Phase 8 |
| December 26-27, 2010 | 12.4 | 1.13 | 11/1 | 12/21 to 12/27 = -0.964 | 12/21 to 12/27 = -1.083 | 12/21 to 12/27 = -3.573 | Moderate La Nina | Negative | Phase 5 |
| February 11-12, 2006 | 12.0 | 0.89 | 13.5/1 | 2/6 to 2/12 = -0.090 | 2/6 to 2/12 = 1.395 | 2/6 to 2/12 = -0.418 | Weak La Nina | Weak Positive | Phase 8 |
| March 13-14, 1993 | 12.0 | 1.80 | 6.7/1 | 3/8 to 3/14 = 0.147 | 3/8 to 3/14 = 0.147 | 3/8 to 3/14 = 0.792 | Neutral | Weak Positive | Phase 4 |
| February 12-14, 2014 | 11.5 | 1.51 | 7.6/1 | 2/8 to 2/14 = 0.849 | 2/8 to 2/14 = -0.878 | 2/8 to 2/14 = 0.526 | Weak La Nina | Neutral | Phase 5 |
| March 19-21, 1958 | 11.4 | 2.64 | 4.3/1 | 3/15 to 3/21 = -0.671 | 3/15 to 3/21 = -0.13 | 3/15 to 3/21 = -2.718 | Moderate El Nino | Neutral | N/A |
| February 3-4, 1961 | 10.3 | 1.57 | 6.7/1 | 1/29 to 2/4 = 0.156 | 1/29 to 2/4 = 0.404 | 1/29 to 2/4 = 0.111 | Neutral | Neutral | N/A | January 10-11, 1954 | 10.0 | 0.98 | 10.2/1 | 1/5 to 1/11 = -0.434 | 1/5 to 1/11 = -0.337 | 1/5 to 1/11 = -0.396 | Weak El Nino | Negative | N/A |
| February 6-7, 1967 | 9.9 | 0.60 | 16.5/1 | 2/1 to 2/7 = 0.536 | 2/1 to 2/7 = -0.420 | 2/1 to 2/7 = 0.029 | Weak La Nina | Neutral | N/A |
| December 30, 2000 | 9.0 | 0.75 | 12/1 | 12/24 to 12/30 = -0.876 | 12/24 to 12/30 = 0.938 | 12/24 to 12/30 = -4.349 | Weak La Nina | Neutral | Phase 3 |
| January 2-3, 2014 | 9.0 | 0.70 | 12.9/1 | 12/28 to 1/3 = -0.071 | 12/28 to 1/3 = 0.187 | 12/28 to 1/3 = -0.830 | Neutral | Neutral | Phase 5 and 6 |
| March 1-2, 2009 | 9.0 | 0.54 | 16.7/1 | 2/24 to 3/2 = 0.756 | 2/24 to 3/2 = -0.995 | 2/24 to 3/2 = 1.893 | Weak La Nina | Negative | Phase 4 |
| February 3-4, 1995 | 8.8 | 1.04 | 8.5/1 | 1/29 to 2/4 = 0.511 | 1/29 to 2/4 = 1.492 | 1/29 to 2/4 = 1.492 | Weak El Nino | Neutral | Phase 1 |
| March 5, 1981 | 8.8 | 0.89 | 9.9/1 | 2/27 to 3/5 = -0.671 | 2/27 to 3/5 = 0.440 | 2/27 to 3/5 = -3.683 | Weak La Nina | Positive | Phase 8 |
| January 22, 1987 | 8.8 | 1.03 | 8.6/1 | 1/16 to 1/22 = -0.210 | 1/16 to 1/22 = 0.441 | 1/16 to 1/22 = -0.003 | Moderate El Nino | Strong Positive | Phase 3 |
| March 18-19, 1956 | 8.7 | 0.91 | 9.6/1 | 3/13 to 3/19 = 0.131 | 3/13 to 3/19 = -0.301 | 3/13 to 3/19 = 0.225 | Weak La Nina | Highly Negative | N/A |
| December 8, 2013 | 8.6 | 0.57 | 15.1/1 | 12/2 to 12/8 = 0.158 | 12/2 to 12/8 = -0.748 | 12/2 to 12/8 = 0.919 | Neutral | Neutral | N/A |
| January 25, 2000 | 8.5 | 1.03 | 8.3/1 | 1/19 to 1/25 = -0.654 | 1/19 to 1/25 = -0.084 | 1/19 to 1/25 = -0.405 | Moderate La Nina | Highly Negative | Phase 1 |
| February 3-4, 2009 | 8.4 | 0.57 | 14.8/1 | 1/29 to 2/4 = -0.180 | 1/29 to 2/4 = 0.362 | 1/29 to 2/4 = -1.939 | Weak La Nina | Negative | Phase 5 |
| January 29-30, 1966 | 8.3 | 0.62 | 13.4/1 | 1/24 to 1/30 = -1.269 | 1/24 to 1/30 = 0.315 | 1/24 to 1/30 = -4.378 | Moderate El Nino | Weak Negative | N/A |
| March 3-4, 1960 | 8.2 | 0.84 | 9.8/1 | 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 |
| Jan 31-Feb 2, 2021 | 8.1 | 0.68 | 12/1 | 1/27 to 2/2 = -0.194 | 1/27 to 2/2 = -0.753 | 1/27 to 2/2= -2.723 | Moderate La Nina | Neutral | Phase 6 |
| March 20-21, 2018 | 7.6 | 1.46 | 5.2/1 | 3/15 to 3/21 = -0.634 | 3/15 to 3/21 = -0.538 | 3/15 to 3/21 = -0.701 | Weak La Nina | Neutral | Phase 5 |
| February 7, 1979 | 7.5 | 0.59 | 12.7/1 | 2/1 to 2/7 = -1.042 | 2/1 to 2/7 = -1.398 | 2/1 to 2/7 = -1.579 | Neutral | Moderate Negative | Phase 2 |
| February 16-17, 1996 | 7.5 | 0.49 | 15.3/1 | 2/11 to 2/17 = 0.341 | 2/11 to 2/17 = 0.108 | 2/11 to 2/17 = 0.026 | Weak La Nina | Weak Positive | Phase 2 |
| March 5, 2015 | 7.5 | 0.78 | 9.6/1 | 3/9 to 3/15 = 0.708 | 3/9 to 3/15 = 0.261 | 3/9 to 3/15 = 2.272 | Weak El Nino | Highly Positive | Phase 7 |
| January 28-29, 2022 | 7.5 | 0.72 | 10.4/1 | 1/23 to 1/29 = 0.703 | 1/23 to 1/29 = 0.803 | 1/23 to 1/29 = 1.726 | Weak La Nina | Moderate Negative | Phase 7 |
| March 8-9, 1984 | 7.3 | 0.74 | 9.9/1 | 3/3 to 3/9 = 0.198 | 3/3 to 3/9 = 0.748 | 3/3 to 3/9 = -1.627 | Neutral | Strong Positive | Phase 7 and 8 |
| January 12-13, 1964 | 7.2 | 0.71 | 10.2/1 | 1/7 to 1/13 = -0.798 | 1/7 to 1/13 = 0.254 | 1/7 to 1/13 = -0.075 | Moderate El Nino | Neutral | N/A |
| February 6-7, 2003 | 7.1 | 0.56 | 12.7/1 | 2/1 to 2/7 = 0.510 | 2/1 to 2/7 = 0.520 | 2/1 to 2/7 = 0.505 | Weak El Nino | Strong Positive | Phase 4 |
| March 8, 1953 | 7.1 | 0.51 | 14/1 | 3/2 to 3/8 = 0.206 | 3/2 to 3/8 = -0.890 | 3/2 to 3/8 = 2.354 | Weak El Nino | Moderate Negative | N/A |
| December 5, 2002 | 7.0 | 0.70 | 10/1 | 11/29 to 12/5 = -0.674 | 11/29 to 12/5 = 0.850 | 11/29 to 12/5 = -1.413 | Moderate El Nino | Strong Positive | Phase 8 |
| February 22, 2001 | 7.0 | 0.40 | 17.5/1 | 2/16 to 2/22 = 1.063 | 2/16 to 2/22 = 0.654 | 2/16 to 2/22 = 0.308 | Weak La Nina | Neutral | Phase 6 |
| December 3-4, 1957 | 7.0 | 0.80 | 8.8/1 | 11/28 to 12/4 = -0.454 | 11/28 to 12/4 = 0.390 | 11/28 to 12/4 = -0.689 | Strong El Nino | Neutral | N/A |