NEW ORLEANS — On Aug. 28, the storm was still a day away. Evacuations were under way and people were just starting to arrive at the Superdome. 
 
 At his desk at the National Weather Service office in Slidell, outside New Orleans, meteorologist Robert Ricks knew he had a job to do. He knew he probably had one remaining chance. And so, using computers, history and his fellow forecasters, he sat down to write. 
 
 "I happened to be on the shift," Ricks says. "I happened to pull the trigger. It just happened to be me that day. 
 
 Over the newswires — at NBC News headquarters in New York and across the country — came a document, titled: "URGENT... SPECIAL MESSAGE." It was an extraordinary bulletin. It warned of a most powerful hurricane with unprecedented strength. It predicted: "MOST OF THE AREA WILL BE UNINHABITABLE FOR WEEKS. PERHAPS LONGER. AT LEAST ONE HALF OF WELL-CONSTRUCTED HOMES WILL HAVE ROOF AND WALL FAILURE. ALL GABLED ROOFS WILL FAIL. THE VAST MAJORITY OF NATIVE TREES WILL BE SNAPPED OR UPROOTED. OTHERS WILL BE TOTALLY DEFOLIATED." 
 
 Perhaps most remarkably, Ricks' document predicted: "WATER SHORTAGES WILL MAKE HUMAN SUFFERING INCREDIBLE BY MODERN STANDARDS." 
 
 That was the day before the storm. The images of devastation make it clear what happened. 
 
 Brian Williams: Did a part of you want to be wrong? 
 
 Robert Ricks: I would much rather have been wrong in this one. I would much rather be talking to you and taking the heat and crying wolf. But our local expertise said otherwise. You know, "Hey, let's gear up for the big one, this is going to be the big one." 
 
 Williams: How much of you is in that statement? What of you is in that wording? 
 
 Ricks: I also had to validate each one of those statements and I was, in my mind, I was saying, "I'm not going to take this out, it sounds valid. I'm not going to take this part out, it sounds valid. 
 
 Williams: So you went through point by point? 
 
 Ricks: Yeah, I read each one. I was trying to find things to actually take out. And I said, "I cannot find it in myself to take these out, because they seem very valid for the situation." And I came from the experience of going through Betsy and Camille myself in the Lower Ninth Ward. 
 
 But his document was right. And now this lifelong resident of New Orleans, who grew up in the hard-hit Lower Ninth Ward section of the city, is back at work alongside co-workers who have no homes and are wearing the clothes they wore that day. 
 
 Williams: If you knew the damage was going to be like this, you did everything in your power to tell people a monster was coming, did the response break your heart? 
 
 Ricks: Yes, it did. Because we always prepare for the big one; we just didn't think it was going to come this soon. ||||| Photo by James Nielsen/AFP/Getty Images 
 
 Ten years ago this morning, National Weather Service meteorologist Robert Ricks faced a dilemma. As the forecast coordinator that day for the Slidell, Louisiana, office—which has responsibility for New Orleans—he needed to find a way to convey the urgency and seriousness of the situation his region would face the next day as Hurricane Katrina made landfall. 
 
 This is what he came up with: 
 
 National Weather Service 
 
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 These bold words, considered by many to be the most dire—and effective—weather forecast ever issued by the National Weather Service, are now in the Smithsonian Museum of American History, along with a rosary from Ricks’ grandmother he held as he and his fellow forecasters rode out the storm. 
 
 At a conference of broadcast meteorologists earlier this year, Ricks said, “On that particular fateful day, when I issued that product … I was awestruck.” 
 
 Another, less widely circulated official forecast he issued that day, the Area Forecast Discussion, was more to the point: “Godspeed to all those in the path of this storm.” 
 
 Bold statements like Ricks’ have been occasionally used—and officially encouraged—in recent years by the National Weather Service, as part of an effort to increase the effectiveness of sometimes bland government bulletins during true weather emergencies. Most notably, meteorologist Gary Szatkowski’s “personal plea” during Hurricane Sandy’s New York City-area landfall in 2012—which included gut-wrenching statements like “if you are still reluctant (to evacuate), think about your loved ones”—earned him hero status.
– It's one of the most famous weather forecasts of the modern era, and it came out exactly 13 years ago to the day. That would be Aug. 28, 2005, one day before Hurricane Katrina devastated New Orleans. National Weather Service meteorologist Robert Ricks issued a forecast so dire that some news agencies thought it was a hoax, writes meteorologist James Spann in a tweet commemorating the Ricks forecast. As it turns out, Ricks was spot on. "Most of the area will be uninhabitable for weeks…perhaps longer," he wrote. "At least one half of well constructed homes will have roof and wall failure. All gabled roofs will fail…leaving those homes severely damaged or destroyed." And this: "Water shortages will make human suffering incredible by modern standards." (Spann's tweet includes the full text.) The forecast has been credited with saving lives, and it is now in the Smithsonian Museum of American History, as noted by Slate on the 10-year anniversary. Ricks told Brian Williams of NBC News on Sept. 15, 2005, that he went through the warning line by line to verify each doomsday-sounding statement before making it public. He ended up removing nothing. "I would much rather have been wrong in this one," he told Williams. "I would much rather be talking to you and taking the heat and crying wolf. But our local expertise said otherwise. You know, 'Hey, let's gear up for the big one, this is going to be the big one.'" (Read about what JJ Watt's crowdsourced fundraiser accomplished in the wake of Hurricane Harvey.)