Once or twice in a calendar year Houston will receive snow – although most non-Houstonians find that statement incredulous. We have proof! – observations and data measurements are necessary to promising young scientists. The snow began to fall rapidly in Spring, TX at 9:17 pm CST (03:17hrs UTC). The red arrow indicates when the first flakes began to fall. The second image was taken at 07:00 am CST (13:00hrs UTC).