<Table> 2004 Christmas Eve United States winter storm <Tr> <Td_colspan="2"> December 25, 2004 morning visible satellite image of the cyclone (south of Louisiana) which brought snow to South Texas on Christmas Eve . The whiteness across South Texas is snow cover, not cloudiness </Td> </Tr> <Tr> <Th> Type </Th> <Td> Winter storm Tornado outbreak </Td> </Tr> <Tr> <Th> Formed </Th> <Td> December 24, 2004 </Td> </Tr> <Tr> <Th> Dissipated </Th> <Td> December 28, 2004 </Td> </Tr> <Tr> <Th> Lowest pressure </Th> <Td> 964 mbar (hPa) </Td> </Tr> <Tr> <Th> Maximum snowfall or ice accretion </Th> <Td> 18 inches (45.7 cm) </Td> </Tr> <Tr> <Th> Damage </Th> <Td> Unknown </Td> </Tr> <Tr> <Th> Total fatalities </Th> <Td> Unknown </Td> </Tr> <Tr> <Th> Areas affected </Th> <Td> South Central United States, East Coast of the United States </Td> </Tr> </Table> <Tr> <Td_colspan="2"> December 25, 2004 morning visible satellite image of the cyclone (south of Louisiana) which brought snow to South Texas on Christmas Eve . The whiteness across South Texas is snow cover, not cloudiness </Td> </Tr> <Tr> <Th> Type </Th> <Td> Winter storm Tornado outbreak </Td> </Tr> <Tr> <Th> Formed </Th> <Td> December 24, 2004 </Td> </Tr>

When was the last time houston had a white christmas