Nearly a week after deadly floods struck Central Texas, search and rescue teams are continuing to probe debris for those still missing.

On the night the deadly floodwaters raged down the Guadalupe River in Texas, the National Weather Service forecast office in Austin/San Antonio was missing a key member of its team: the warning coordination meteorologist,

Often the number of people that are reported missing in a natural disaster turns out to be much greater than the actual final tally.

Gov. Greg Abbott says 161 people remain missing after catastrophic Central Texas flooding, as the death toll climbs to 109 and search efforts intensify.

Multiple urban search and rescue teams from across the country that responded to the deadly floods in central Texas told CNN they were not deployed by the Federal Emergency Management Agency until at least Monday evening — days after any victim had been found alive.

KERRVILLE, Texas — The death toll from the devastating Fourth of July weekend flooding in Texas rose to at least 104 on Monday, with more victims feared missing as rescue teams continued combing through debris-filled rivers and flood-ravaged areas.

As the search in Texas continued Wednesday for more than 160 people believed to be missing days after a destructive wall of water killed

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.