About: http://webisa.webdatacommons.org/411087580

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Quoting beell:There is an algorithm employed that makes a comparison of opposing velocities on a near pixel by pixel basis with an internal alert generated if a certain threshhold is reached.
http://www.w3.org/ns/prov#wasQuotedFrom	wunderground.com