Even when floods can be anticipated, communicating their severity to the public is a tall order. Because flash floods are very localized, even neighborhood-level warnings may seem like false alarms to some residents, leading to what the journalist Zoë Schlanger has dubbed “ alert fatigue .”

One of the worst floods in a Texas rivers' history left dozens dead over the Independence Day weekend. What to know about flash flooding and warnings.

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

With an outpouring of volunteers from across Texas, the riverside town of Hunt is grappling with loss and recovery after deadly floods.

The NWS Fort Worth TX released an updated flash flood warning at 9:09 p.m. on Saturday in effect until Sunday at midnight. The warning is for Collin, Dallas and Denton counties.

The region of Texas that suffered tremendous loss last week because of heavy rain and flooding is once again in danger of taking in more water. On Sunday morning, the National Weather Service issued a flash flood warning for the epicenter of the catastrophic Independence Day flooding event.

Today, 17 million are under flood alerts across the Gulf Coast and in the Mid-Atlantic, and 19 million are under heat alerts across the Mid-Atlantic, southern Florida and Mississippi Valley.

Another round of heavy rains is drenching central Texas with “life-threatening flash flooding,” according to the National Weather Service, forcing first responders in Kerrville to suspend search-and-rescue operations looking for the remaining missing after the deadly floods that took place last week.

A flash flood warning was issued by the NWS Fort Worth TX on Monday at 2:30 a.m. in effect until 5:30 a.m. The warning is for Johnson, Bosque and Hill counties.

As early as July 2, officials at the Texas Division of Emergency Management, or TDEM, were publishing news releases warning that “heavy rainfall with the potential to cause flash flooding is anticipated across West Texas and the Hill Country” and were preparing resources such as swift-water rescue boat squads.

Texas was hammered with heavy rain again Sunday, just nine days after catastrophic flash floods left more than 120 people dead in one of the worst natural disasters in the state’s