Nevada
5 of the most significant atomic blasts at the Nevada Test Site
The Nevada Test Site didn’t waste any time.
President Harry Truman established the site, a 680-square-mile section of the Nellis Air Force Gunnery and Bombing Range, on Dec. 18, 1950.
Less than six weeks later, a 1-kiloton device, equivalent to 1,000 tons of TNT, was dropped from an Air Force B-50 bomber.
It was the first of 928 nuclear tests, 100 of them above ground, at what was originally known as the Nevada Proving Grounds and is now referred to as the Nevada National Security Site.
We asked the Atomic Museum’s Joe Kent, deputy director and curator, and Matt Malinowski, director of education, about the most significant blasts at the test site.
Here are five of their picks, with the series name followed by the test name, along with how the Review-Journal covered them.
Ranger/Able
Date: Jan. 27, 1951
What it was: This was the first atomic test in the continental U.S. since the Manhattan Project’s Trinity test on July 16, 1945.
“It was very much, ‘OK, let’s get started. Let’s see how it goes,’ ” Kent said.
How we covered it: “Roulette wheels and dice tables, which operate 24 hours a day here, were still doing a brisk business when the blast went off around 5 a.m.,” we wrote.
“In the Golden Nugget, a man standing at one of the craps tables felt the shock. He paused and looked around.
“ ‘Must be an A-bomb,’ he said. He turned back to the table and went on with the game.”
Local insurance agent O.A. Kimball said one of his clients called before dawn to tell him the plaster on her walls and ceiling were cracked by the explosion.
“ ‘The doors really played a tune when the thing went off,’ Kimball reported her as saying, ‘and I was afraid for a few minutes the house would fall down.’ ”
Upshot-Knothole/Harry
Date: May 19, 1953
What it was: This 32-kiloton test became known as “Dirty Harry” when the fallout, which was intended to land between Alamo and Glendale, was blown downwind into St. George, Utah.
“That’s probably the quintessential test that is tied to the downwinder movement,” Kent said of the presumed victims of the blast who were exposed to radiation.
How we covered it: “The cloud, which was barely visible in Las Vegas because of the overcast, gray dawn, traveled in an east-southeast direction and the atomic energy commission (sic) established highway checkpoints on Highways 91 and 93 to warn motorists of the possibility of radioactive fallout.
“The checkpoints were established at St. George, Alamo, Glendale and Nellis air force base (sic) and were a precautionary measure. No hazardous levels of radioactivity were reported.”
The next day, we checked in on St. George.
“Having an atomic cloud hover over their town caused little concern to the men, women and children who live in St. George, Utah, who kept indoors several hours yesterday after atomic energy commission officials reported that there would be some fallout there after yesterday morning’s shot.”
St. George resident Dick Hammer estimated between 30 and 40 people, most of them tourists, were in his Dick’s Cafe when the word that people should remain indoors came over the radio. One woman, he said, wondered what would happen to them.
“ ‘Hell, lady, I don’t know,’ Hammer replied, ‘but I don’t think you have much to worry about.’ ”
Teapot/Apple 2
Date: May 5, 1955
What it was: This was the second of “two highly publicized civil effects tests just to see what would happen to a small town,” Kent said. “What would be the concerns if the town was hit with one of these bombs.”
It’s also the test that inspired the scene in “Indiana Jones and the Kingdom of the Crystal Skull” in which Indy rides out a nuclear blast in a refrigerator.
A 29-kiloton device was dropped from a 500-foot tower near Doom Town, the symbolic burgh made up of fully furnished homes, a radio station, a gas station and other signs of civilization, with mannequins representing the residents.
How we covered it: “A fearsome nuclear weapon bludgeoned this guinea-pig city today while the civil defense teams staged a dress rehearsal of their possible roles in the atomic age.
“Dummies dressed as men, women and children were grouped under the atom’s devastating might in an experiment to determine how families in an American target city might survive the fury of nuclear warfare.”
The blast was described as “a spectacular orange, blue and purple fireball.”
The next day, officials got a full look at the damage.
“Death and serious injury struck the dummy men, women and children of Doomsday Drive, the little dirt road lying only 4,700 feet from ground zero,” we wrote.
“A mannequin mother died horribly in her one-story home of pre-cast concrete slabs. Portions of her plaster-and-paint body were found in three different areas. A mannequin tot, perhaps the size of your 3-year-old, was blown out of bed and showered with needle-sharp glass fragments. This house withstood the blast, but its occupants may not have.”
Plumbbob/Hood
Date: July 5, 1957
What it was: A 74-kiloton thermonuclear device was dropped from a balloon, sending an atomic cloud 49,000 feet into the air, as part of the largest above-ground test at the site. The test is featured in the Atomic Museum’s Ground Zero Theater.
It also was part of the Desert Rock exercises, essentially war games designed to test how members of the military would perform during an atomic war.
“They would have these exercises along with the blasts,” Malinowski said. “So the troops would be put into foxholes or trenches, told to stay down low, not to look directly at the light while it was going off.”
How we covered it: “Nuclear scientists this morning fired the largest atomic blast ever to be detonated in the continental United States and the resulting explosion caused veteran observers 13 miles from ground zero to gasp with awe at its terrible immensity.
“The flash and fulminating fireball caused joshua (sic) trees and yucca plants near zero to burst into flames, making the desert floor resemble a flaming city.”
Elsewhere in that edition, it was reported that “a United Airlines pilot flying from Honolulu to Los Angeles radioed that he saw the light of the Nevada blast as his plane cruised 1,000 miles off the California coast.” A bright flash was reported in San Francisco, while residents in Hollywood, Anaheim and Newport Beach reported feeling “two jarring shocks” at 5:05 a.m., 25 minutes after the detonation.
Julin/Divider
Date: Sept. 23, 1992
What it was: This underground vertical shaft test of less than 20 kilotons proved to be the final full-scale test at the site. It wasn’t designed to be, but a nine-month testing moratorium went into effect on Oct. 1. The next year, it was extended indefinitely.
“They still do subcritical testing on the weapons stockpile out there,” Malinowski said. “So even though they’re not doing full-scale detonations, there are experiments they do to kind of verify that the stockpile is still well-maintained and active.”
How we covered it: “The United States conducted its sixth nuclear weapons test of the year Wednesday at the Nevada Test Site, five days after the last one, while four Belgian anti-nuclear activists hid within a mile or two of ground zero, U.S. authorities said.
“The four — three men and a woman — said they feared for their safety as Department of Energy scientists began counting down the last five minutes prior to the 8:04 a.m. detonation, prompting them to flee on bicycles to a safer location, some three miles from ground zero.”
They were arrested there about an hour later.
“I was kind of scared,” said Michiel De Grande, 25, outside the Foley Federal Building after he was ordered to appear the next day for a hearing on federal trespass charges. “The feeling inside was real strange, the feeling of the pain of the Earth. It shook for 10 seconds. Even before the bomb exploded you could feel the Earth crying.”
Contact Christopher Lawrence at clawrence@reviewjournal.com or 702-380-4567. Follow @life_onthecouch on X.
Nevada
Monday’s high school scores, top performances
Top performances
Boys basketball
■ Mekhi Carter, Canyon Springs: The sophomore collected 17 points, five assists and two steals while leading the Pioneers to a 63-49 win over Tech.
■ Gian Haddock, Desert Oasis: The senior scored 23 points as the Diamondbacks outlasted Silverado for a 70-68 triple-overtime win.
■ Rylan Hearns, Arbor View: The senior finished with 28 points in the Aggies’ 71-55 win over Foothill.
■ Uzo Nwapa, The Meadows: The junior scored 18 points to help the Mustangs hold off Shadow Ridge for a 57-54 victory.
■ David Quesada, Cimarron-Memorial: The sophomore racked up 28 points and eight rebounds to lead the Spartans past Del Sol 84-49.
Girls basketball
■ Samantha Chesnut, Liberty: The senior led a balanced attack with 11 points as the Patriots rolled past Las Vegas 68-14.
■ Greta Piepkorn, Rancho: The sophomore collected 12 points and five steals while leading the Rams to a 42-34 win over Green Valley.
■ Bella Robinson, Coral Academy: The senior finished with 29 points, 14 rebounds, 13 steals and six assists in the Falcons’ 59-20 victory over Eldorado.
■ Sabrina Stewart, Del Sol: The sophomore scored 27 points and the Dragons rallied from an 11-point fourth-quarter deficit to beat Canyon Springs 62-58.
■ Nation Williams, Centennial: The senior posted 16 points in the Bulldogs’ 76-24 victory over Faith Lutheran.
Flag football
■ Amaya Mackey, Legacy: The sophomore had three interceptions to help the Longhorns secure a 19-6 victory over Moapa Valley.
■ Manahere Peters, Sloan Canyon: The junior caught 10 passes for 187 yards and three touchdowns in the Pirates’ 41-24 loss to Bishop Gorman.
■ Charli Taylor, Liberty: The freshman completed 23 of 48 passes for 384 yards and four TDs to lead the Patriots beat Green Valley 35-6.
Scores
Boys basketball
Arbor View 71, Foothill 55
Canyon Springs 63, Tech 49
Cimarron-Memorial 84, Del Sol 49
Desert Oasis 70, Silverado 68 (3OT)
Laughlin 72, Liberty Baptist 52
Losee 63, Mater East 40
Needles 86, Awaken Christian 33
Snow Canyon (Utah) 67, Virgin Valley 61
The Meadows 57, Shadow Ridge 54
Western 62, Cadence 7
Girls basketball
Amplus Academy 46, Chaparral 21
Centennial 76, Faith Lutheran 24
Coral Academy 59, Eldorado 20
Del Sol 62, Canyon Springs 58
Laughlin 41, Liberty Baptist 15
Liberty 68, Las Vegas 14
Mojave 64, Shadow Ridge 63
Rancho 42, Green Valley 34
Spring Valley 48, Doral Academy 29
Sunrise Mountain 53, Cheyenne 18
Western 29, Cadence 21
Flag football
Bishop Gorman 41, Sloan Canyon 24
Chaparral 7, Amplus Academy 6
Cimarron-Memorial 18, Clark 13
Desert Oasis 55, Cheyenne 0
Legacy 19, Moapa Valley 6
Liberty 35, Green Valley 6
Mojave 22, Basic 8
Palo Verde 13, Mater East 12
Jeff Wollard Las Vegas Review-Journal
Nevada
Nevada County house fire sends 2 people to hospital with burns
Two people have been hospitalized after a fire at a rural Nevada County home Monday morning.
Nevada County Consolidated Fire Department officials say several departments responded to the scene along Moroni Lane, west of Colfax and south of Grass Valley, a little after 9:30 a.m.
Firefighters found two burn victims at the scene. One of those victims was taken to the hospital, while officials say the other was taken to a burn center for advanced care.
No other details about the victims’ conditions have been released.
The flames were stopped before they could spread to any other properties.
Exactly what started the fire is now under investigation.
Nevada
People urged to stay inside across California, Nevada, Oregon, South Dakota
Thousands of residents across parts of California, Nevada, Oregon, and South Dakota have been advised to stay indoors, as levels of fine particle pollution (PM2.5) will have reached “unhealthy” levels as of January 12, 2026, at 6 a.m. ET, the Environmental Protection Agency’s (EPA) AirNow Map shows.
The EPA is urging people in sensitive groups, including the elderly, children, and those with certain health conditions, to completely avoid prolonged or intense outdoor activities. Everyone else should reduce their participation in long or intense outdoor pursuits.
This is because physical activity causes people to breathe harder and faster, which means the fine particulate matter can penetrate deeper into the lungs if people are exercising outdoors.
The EPA warns, “Your chances of being affected by particles increase the more strenuous your activity and the longer you are active outdoors. If your activity involves prolonged or heavy exertion, reduce your activity time—or substitute another that involves less exertion. Go for a walk instead of a jog, for example.”
What Do ‘Unhealthy’ Levels of PM2.5 Mean?
PM2.5 are tiny, inhalable particles of pollution, 2.5 micrometers or less in size (smaller than a strand of hair), that are considered to be one of the most dangerous forms of air pollution, according to the EPA.
This is because they get deep into the lungs—and sometimes even the bloodstream—triggering or exacerbating certain health conditions, like asthma, or causing symptoms ranging from coughing and nose, eye, and throat irritation to shortness of breath and chest tightness.
The Environmental Protection Agency (EPA) uses the Air Quality Index (AQI) to report and classify air quality across the United States. The AQI is a standardized scale ranging from 0 to 301+, which categorizes air quality into the following levels:
- Good: 0 to 50—Air pollution poses little or no risk to the public
- Moderate: 51 to 100—Some pollutants may pose a moderate health concern for a very small number of unusually sensitive people
- Unhealthy for sensitive groups: 101 to 150—Members of sensitive groups (children, elderly, people with respiratory or heart conditions) may experience health effects; the general public is less likely to be affected
- Unhealthy: 151 to 200—Everyone may begin to experience health effects; members of sensitive groups may experience more serious effects
- Very Unhealthy: 201 to 300—Everyone may experience more serious health effects
- Hazardous: 301+—Health warnings of emergency conditions; the entire population is likely to be affected
What Causes PM2.5?
PM2.5 can come from a variety of sources, ranging from wildfires and smokestacks to emissions from vehicles and power or industrial plants.
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