Five Things You Need to Know Today, Jan. 31

1. Weather: Expect some snow showers this morning and clouds this evening. High temperatures could reach 47 with an overnight low of 37.

2. 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. .

3. 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. .

4. Today in Arlington Sports: The boys and girls of  will compete in several basketball matches this afternoon. Stay tuned to the schedule with our daily feature .

5. This day in history: On this day in 1950, U.S. President Harry S. Truman publicly announces his decision to support the development of the hydrogen bomb, a weapon theorized to be hundreds of times more powerful than the atomic bombs dropped on Japan during World War II.