There really is not an easy way to explain Chinook winds without getting into some pretty technical meteorology, but no discussion of Black Hills weather would be complete without mentioning the Chinook. The reason is that the Black Hills of South Dakota are home to the world's fastest recorded rise in temperature, a record that has held for nearly six decades.
On January 22, 1943, the northern and eastern slopes of the Black Hills were at the western edge of an Arctic airmass and under a temperature inversion. A layer of shallow Arctic air hugged the ground from Spearfish to Rapid City. At about 7:30am MST, the temperature in Spearfish was -4 degrees Fahrenheit. The Chinook kicked in, and two minutes later the temperature was 45 degrees above zero. The 49 degree rise in two minutes set a world record that is still on the books. By 9:00am, the temperature had risen to 54 degrees. Suddenly, the Chinook died down and the temperature tumbled back to -4 degrees. The 58 degree drop took only 27 minutes.
The largest temperature change in a 24-hour period in Oklahoma was recorded on November 11, 1911, when the temperature in Oklahoma City dropped 66 degrees in 24 hours due to a strong cold front. The temperature dropped from 83°F to 17°F during that time.
The geologic time intervals from longest to shortest are eon, era, period, epoch, and age. This hierarchical sequence represents the largest divisions (eons) to the smallest subdivisions (ages) of Earth's history.
The order of units of geologic time from longest to shortest is: eon, era, period, epoch.
eon>era>period
The Quaternary period is the shortest era in the geologic time scale. It began about 2.6 million years ago and continues to the present day.
The largest temperature change in a 24-hour period in Oklahoma was recorded on November 11, 1911, when the temperature in Oklahoma City dropped 66 degrees in 24 hours due to a strong cold front. The temperature dropped from 83°F to 17°F during that time.
The largest recorded temperature change in one place over a 24-hour period in Nevada occurred in 1995 at the location of Luning. The temperature dropped from 120°F (49°C) to 1°F (-17°C) in just 24 hours, resulting in a remarkable temperature swing of 119°F (66°C). This extreme change showcases the dramatic weather patterns that can occur in the region.
On January 25th, 1916 residents of Browning, Montana were still adjusting to the largest 24 hour temperature change on record in the U.S.. On January 23rd and 24th, 1916 the temperature fell from a pleasant 44 degrees above zero to a bitter -56 degrees in 24 hours. That's a temperature change of an amazing 100 degrees in 24 hours and that's a record that still stands as the largest 24 hour temperature fluctuation in the U.S. (Source: NOAA's National Weather Service Weather Forecast Office)
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1st period.
''Mercury (shortest),''Neptune (longest)
Mercury has the shortest period of revolution around the Sun, at approximately 88 Earth days.
The planet that has the shortest period of revolution is Mercury, which is 88 days. The planet with the longest revolution is Neptune, which is 165 years. Earth's revolution is the third shortest.
Jupiter has the shortest period of revolution among the gas giants, with a revolution period of about 11.86 Earth years.
The geologic time intervals from longest to shortest are eon, era, period, epoch, and age. This hierarchical sequence represents the largest divisions (eons) to the smallest subdivisions (ages) of Earth's history.
The scientific term for temperature change is "thermal variation" or "thermal fluctuation." It refers to the variation in temperature of a system or environment over a period of time.
The inner planet with the shortest period of revolution is Mercury, which orbits the sun once every 88 Earth days.