you can see skyforce 10 is over the school. someone right at that front door and the school is now on lockdown. you can see all of the vehicles that are there in the front. still unclear at this point if anyone was injured in this shooting. we have crews headed there on the ground. we'll bring you updates as soon as we get them. >>> now to the first alert weather forecast. a chilly one out there. how long is this cold going to last? let's check in with glenn "hurricane" schwartz. >> that roller coaster we've been on continues. we're at the bottom of it now. despite sunshine today, only 32 degrees. that's as high as we've gotten in other parts of the area, haven't even gotten to 30 degrees today. still a little bit of snow on the grass in the lehigh valley but not much. it's mostly gone. the temperatures have varied. in the 50s saturday and sunday. down to 38 yesterday. only 32 today. but we're going to jump up tomorrow. and then we're going to go right back down as we go into friday and saturday. in delaware, we have temperatur