The image comes from NEXRAD radar imagery at 10:07 a.m. Eastern Daylight Time on 9/11, overlain on a topographical map. It came from the NWS NEXRAD radar at KDIX (Philadelphia) and was processed using the NCDC's JAVA NEXRAD tool. The radar data is from the NCDC NEXRAD database and the background map is from the USGS. (These were overlain using the Java tool.) Hello32020 20:01, 11 September 2007 (UTC)