Five Things You Need to Know Today, Jan. 25

1. Weather: Expect a sunny Wednesday. High temperatures could reach 40 with an overnight low of 26.

2. Arlington Alerts: Officials on Tuesday conducted a  to introduce the service to residents and inform them on how to register to receive alerts by text, email and on their cell phones. .

3. Library Film Series: Drop by at 7 p.m. tonight and catch Edward Burns' new film "Newlyweds" for free. The film will be shown as the next entry in the . 

4. Today in Arlington Sports: Stay on top of what's going on in Arlington athletics. Today, the boys and girls of  and  are competing in .

5. This day in history: On this day in 1905, at the Premier Mine in Pretoria, South Africa, a 3,106-carat diamond is discovered during a routine inspection by the mine's superintendent. Weighing 1.33 pounds, and christened the "Cullinan," it was the largest diamond ever found.