but owe chief tracey wilkins spoke with the family. >> reporter: they're saying at the end of the day it apeerls a domestic dispute that spun completely out of control. let us show you the man shot and killed here last night. 34-year-old lionel young. evidently according to sheriffs and police investigating this incident they say that this man got into an argument with his girlfriend outside of his mother's home. she then evidently drove away from him. he at some point rammed the vehicle according to sheriff's deputies. she called 911 and they told her to go somewhere safe. she picked a shopping center nearby and what happened was a police chase that went into d.c. landover. they finally cornered this guy at an elementary school middle school here in prince georges county and he tried ramming the sheriff's deputies vehicles according to sheriff's deputies. that led to them firing their weapon and they said that they were dealing with a violent man. >> our people are aware and being communicated that this is a violent confrontation by a lawless individual right from the beginning, you

reporting live in hyattsville, tracey wilkins news4. >>> now to our weather. doug is tracking the cool air that's moving in, but it won't last long, will it, doug? >> no, it won't last long at all. this is a one day area of very cool air. we're talking not just cool but this is really cold for this time of year. our average temperature is inching toward 80 and we hardly hit 50 in some areas today. we saw the rain coming through mostly south and east of d.c. that's what we've been telling you for the last couple of days. we saw sprinkles early but they moved toward the south. look at the numbers here, how chilly it is aclos the mid-atlantic mid-atlantic. today we're on the chilly side. tomorrow and the weekend we start to see warmer temperatures. and then well, it just gets plain hot. we're talking about the potential first heat wave of the season. i've got the entire forecast for you and we'll take you toward the beach in just a minute. >> thanks, doug. >>> there are some new surveillance photos that show people negligenceal alintentionally setting fires up in