These are two snow events here in Dallas. One was on Christmas Eve 2009 and the other was February 12th. Snow is fairly rare here. 2/12/2010 - This is the greatest amount of snowfall in one calendar day and the most in 24 hours.

(11.2 inches Thursday) -(7.8 inches (previously on Jan. 15, 1964 and Jan. 14, 1917)
1. 12.5 4 a.m. Thursday - 4 a.m. Friday
2. 12.1 Jan. 15-16, 1964
3. 8.2 Jan. 14-15, 1917
4. 7.5 Feb. 17, 1978
5. 7.5 Feb. 25, 1924
6. 6.0 Mar. 13, 1924
7. 5.5 Dec. 9, 1898
8. 5.0 Nov. 22, 1937
9. 5.0 Jan. 5, 1910
10. 4.7 Nov. 13, 1976