Extreme daily weather events during winter and their frequency under major teleconnection patterns
Station data Canada    500+ stations USA : HCND    1000+ stations USA : COOP    15000+ stations further explanation Extreme weather Temperature    Unusually cold days    Unusually warm days Precipitation    Days with heavy amounts    Days with any amount further explanation Teleconnections NAM    (Northern Hemisphere annular mode) PNA    (Pacific-North America pattern) CTI    (El Niño/La Niña) further explanation	Select a region to view data and results Canada    all 13 provinces/territories HCND    48 contiguous states COOP Alaska    AK COOP Northwest    WA, OR, ID, MT COOP Southwest    CA, NV, AZ COOP Lower Rockies    WY, UT, CO, NM COOP Northern Plains    ND, SD, NE, MN, IA, MO COOP South Central    KS, OK, TX COOP Midwest    WI, MI, IL, IN, OH COOP Northeast    ME, NH, VT, NY, MA, CT, RI, PA, NJ COOP Mid-Atlantic    WV, VA, MD, DE, KY, TN, NC COOP Southeast    AR, LA, MS, AL, GA, SC, FL	Still under construction Most of work is complete, however help links largely not yet connected What this work aims to show About the regions Minor web browser requirements Image courtesy NOAA Photo Library