from the border -- kevin adger , . unseasonably cool weather dropped rain and hail in parts of northern california this weekend. frozen rain and hail reported in sacramento sunday. folks in the area were surprised by wet weather after a dry summer season. along with rain -- several ski resorts around lake tahoe also posting photos of snow on the slopes on social media. the national weather services predicted up to three inches of in some areas. forecasters say a second weaker storm will likely sweep across the area today. now fox5 weather 24/7, with chief meterologist ted pretty we stay below average through thursday with highs around 80 degrees..average highs are around 86. north wind moves in on wednesday to 25 mph, then to 15 mph on thursday. we friday with less wind and a high of 83. we'll be warmer for the weekend with highs at 87 and 86 degrees with light breezes and plenty of sun. closed captioning pretty we stay below average through thursday with highs around 80 degrees..average highs are around 86. north wind

as fox's kevin adger reports.. it doesn't involve a wall. as fox's kevin reports, it doesn't involve a wall. >>> i'm here along arizona mexico border. we just talked to a local man that says he can change the way that border is secured and way it is monitored. all starts with digging a trench right here along the border fence. it is called side arm. stands for seismic dew tension and raging mechanism glen spencer man behind this technology. he started the process 13 years ago as way to keep count of the number of people crossing the border. six years ago he had his first demonstration of technology for a group of lawmakers. if it was installed on entire especially when we had drones, everybody who closz the border. it could live as you saw. technology has a similar concept to radar and sonar. the line comes in 5 mile sections and can placed in ground as deep as 10 feet. it solar powered and can detect animals low flying aircraft and people. so any movement within 500 feet from the center line there's an alert. >> people spencer can then send