7 Weather Records So Extreme They Barely Seem Real

Weather records have a way of making ordinary forecasts look almost quaint. A hot afternoon is one thing. A temperature of 134 degrees is another. A snowy morning is manageable. More than seven feet of snow in 24 hours is something else entirely.

Some extreme-weather records also come with an important catch. Older measurements can be disputed, satellite readings are not always directly comparable with weather-station observations, and different organizations track different categories. We checked these seven extraordinary events against current meteorological records and historical reporting. Some are terrifying, some are simply difficult to imagine, and all of them remain remarkable.

On April 26, 1989, a devastating tornado tore through the Manikganj district of Bangladesh, including the communities of Saturia and Manikganj Sadar. The World Meteorological Organization recognizes it as the deadliest tornado on record, with an estimated 1,300 people killed.

The scale of the destruction was enormous. More than 12,000 people were reported injured and roughly 80,000 were left homeless. Contemporary death tolls varied as rescuers searched the devastated area, so the 1,300 figure remains an estimate. After reviewing the available evidence, however, a WMO committee accepted it as the best available mortality figure for the disaster.

Imagine a chunk of ice weighing about as much as a full one-liter bottle of water falling out of the sky. On April 14, 1986, hailstones weighing as much as 1.02 kilograms, or roughly 2.25 pounds, were reported in the Gopalganj district of Bangladesh. The World Meteorological Organization still recognizes that as the record for the heaviest hailstone.

This was far more than a freak piece of ice someone happened to measure. The hailstorm itself was deadly. WMO records say 92 people were killed in the Gopalganj area. For comparison, the Western Hemisphere weight record belongs to a 2010 hailstone from Vivian, South Dakota, that weighed about 1.94 pounds.

The official world heat record remains an almost unbelievable 134 degrees Fahrenheit, or 56.7 degrees Celsius. The temperature was recorded at Greenland Ranch, now Furnace Creek, in California's Death Valley on July 10, 1913. More than a century later, the World Meteorological Organization still lists it as the highest air temperature measured on Earth.

There is an important asterisk. Some weather historians have challenged the reliability of the 1913 observation, along with several other very old heat records. WMO acknowledges that debate but continues to recognize the Death Valley measurement unless a formal review produces enough evidence to overturn it. More recent Death Valley readings have approached 130 degrees, so the area's reputation for extreme heat certainly is not ancient history.

If a rainy weekend ruins your plans, consider what happened at Maunawili Ranch on the Hawaiian island of Oahu. Weather records compiled by climatologists show measurable precipitation there on 331 consecutive days during 1939 and 1940, a remarkable U.S. record for consecutive days with measurable rain.

That does not mean rain poured continuously for nearly a year. In U.S. climate records, a day counts as measurable precipitation when at least 0.01 inch falls. Still, reaching that mark every single day for 331 days is astonishing. Hawaii's windward terrain is exceptionally good at wringing moisture from the trade winds, which helps explain why several of America's longest recorded rainy streaks have occurred there.

Lightning usually seems instantaneous. One enormous electrical discharge over Uruguay and northern Argentina was anything but. On June 18, 2020, a single megaflash continued for 17.102 seconds. The World Meteorological Organization recognizes it as the longest-duration lightning flash ever documented.

And duration is only one way lightning can break a record. In 2025, WMO certified a separate megaflash in the United States that stretched an extraordinary 829 kilometers, or about 515 miles, from eastern Texas toward the Kansas City area. That distance record did not replace the South American duration record. The two measure completely different extremes.

On Feb. 14, 1927, Japan's Mount Ibuki reportedly received 230 centimeters of snow in a single 24-hour period. That works out to 90.6 inches, or just over 7.5 feet. The measurement has long been cited as the world's greatest 24-hour snowfall total and is still referenced as the standing record.

Snow records deserve a little more caution than temperature records. Snow settles, compacts, blows into drifts, and can be surprisingly difficult to measure consistently, particularly when comparing observations made nearly a century apart. The Mount Ibuki figure is widely accepted in historical record lists, but it is better described as a longstanding historical snowfall record than a modern WMO-certified extreme.

The official world record for cold is -89.2 degrees Celsius, or -128.6 degrees Fahrenheit. That extraordinary reading was recorded at the Soviet Vostok Station in Antarctica on July 21, 1983. WMO has formally reviewed the observation and continues to recognize it as the lowest directly measured air temperature on Earth.

You may have seen even colder Antarctic numbers reported since then. Satellites have detected snow-surface temperatures near -98 degrees Celsius in portions of the East Antarctic Plateau. Those measurements describe the temperature of the snow surface rather than a standard weather-station measurement of the air above it, so they do not replace Vostok's official air-temperature record.