This data set contains echo tops imagery from the WSR-88D radars located in the PLOWS 2009-2010 domain. For the PLOWS 2009-2010 period a set of radars were always collected: La Crosse WI (ARX), Milwaukee WI (MKX), Davenport IA (DVN), Lincoln IL (ILX), Chicago IL (LOT), Indianapolis IN (IND), Webster IN (IWX), Evansville, IN (VWX), and St. Louis MO (LSX) and others were collected depending on where operations were occurring: Birmingham AL (BMX), Columbia SC (CAE), Cleveland OH (CLE), Jackson MS (DGX), Denver CO (FTG), Dallas/Ft. Worth TX (FWS), Goodland KS (GLD), Green Bay WI (GRB), Columbus AFB MS (GWX), Ft. Campbell KY (HPX), Hytop AL (HTX), Wilmington OH (ILN), Jackson KY (JKL), North Platte NE (LNX), Louisville KY (LVX), Marquette MI (MQT), Knoxville TN (MRX), Memphis TN (NQA), Omaha NE (OAX), Nashville TN (OHX), Paducah KY (PAH), Ft Polk LA (POE), Shreveport LA (SHV), Ft Smith AR (SRX), Oklahoma City OK (TLX), Topeka KS (TWX), and Hastings ME (UEX). These imagery were produced by NCAR/EOL. During periods when the NCAR C-130 was flying (and satcom was available) the flight track is included in the imagery. See the PLOWS 2009-2010 Field Catalog to see when imagery for particular sites are available.