Five Things You Need to Know Today, Feb. 7

1. Weather: Expect a mostly sunny Tuesday followed by mostly clear skies at night. High temperatures could reach 44 with an overnight low of 20.

2. Work in East Arlington could affect water pressure, color: The  is flushing hydrants and checking street valves along Massachusetts Avenue in East Arlington as part of regular maintenance. During maintenance, residents may experience temporary low water pressure or discolored, rusty water. .

3. Breast cancer support group meets today: Gain the vital support and connection for coping with the stress of breast cancer treatment. No fee. Held at the Armstrong Ambulance conference room. Run by the Center for Cancer Support and Education. .

4. Arlington Alerts: Town officials are encouraging residents to register for Arlington Alerts, a new emergency communication system that will replace the current reverse 911 program. .

5. This day in history: On this day in 1964, Pan Am Yankee Clipper flight 101 from London Heathrow lands at New York's Kennedy Airport—and "Beatlemania" arrives. It was the Beatles' first visit to the United States, six days after the group scores its first No. 1 U.S. hit with "I Want to Hold Your Hand."