User:Runningonbrains/List of weather records in the United States

http://www.aoml.noaa.gov/hrd/Landsea/cerveny-et-al-2007.pdf

Highest temperature on record

 * †''There are a few reports of temperatures as high as 140 F during phenomena known as heat bursts. These temperatures have never been confirmed, and are not recognized as world records.

Max 24-h change 39.44°C (103°F) 14–15 Jan 1972 Loma, Montana

Other temperature records

 * Fastest temperature drop: 26 °C (47 °F) in just 15 minutes; Rapid City, South Dakota, 1911-01-10.
 * Fastest temperature rise: 27 °C (49 °F) in just 2 minutes; Spearfish, South Dakota, 1943-01-22.
 * Warmest temperature ever recorded during a snowfall: 8.3 C; LaGuardia Airport, New York.

Precipitation

 * Least per year (locale): 0.00 mm (0.00 in/year), none in recorded history; Antofagasta Region, Atacama Desert, Chile.

Rain

 * Most in one minute: 38 mm; Barst, Guadeloupe, 1970-11-26.
 * Most in 42 minutes: 300 mm in 42 minutes. Holt, Missouri, USA.
 * Most in one year: 25.4 meters (1000 in); Cherrapunji, India.
 * Highest average annual total: 13.3 meters (523.6 in); Lloro, Colombia.

Snow

 * Most in one-year period: 31.1 meters (1224 in); Mount Rainier, Washington State, United States, 1971-02-19 to 1972-02-18.
 * Most in one season (July 1–June 30): 29.0 meters, (1140 in); Mount Baker, Washington State, United States, 1998 through 1999.
 * Largest snowflake ever observed: 38 centimeters (15 in) in diameter; Fort Keough, Montana, United States, 1887-01-28.

Hail

 * Largest hailstone ever officially measured: 17.8 cm (7.0 in) diameter, 47.6 cm (18.75 in) circumference; Aurora, Nebraska, 2003-06-22.
 * Costliest hailstorm on record:

Wind speed

 * Fastest ever recorded: 484±32 km/h (301±20 mph) 3-second gust; Observed by a DOW (Doppler On Wheels) radar unit in a tornado near Oklahoma City, Oklahoma on 1999-05-03.
 * Fastest recorded with an anemometer: 372 km/h (231 mph) sustained 1-minute average; Mount Washington, New Hampshire, 1934-04-12.
 * Fastest daily average: 174 km/h (108 mph); Port Martin (Adélie Land), Antarctica, 24-hour period from 1951-03-21 to 1951-03-22.

Deadliest in US history

 * In North America: 695 deaths (Tri-State Tornado); Missouri, Illinois, Indiana, United States 1925-03-18.

Outbreaks

 * Deadliest: 747 were killed by the Tri-State Tornado and associated outbreak on 1925-03-18. This may be surpassed by a Bangladeshi outbreak
 * Largest and most severe: The Super Outbreak: 148 tornadoes occurred in 16 hours from April 3 to April 4 1974. They affected 13 US states and Ontario, Canada, and included 24 F4's and 6 F5's, more F5's than have been reported in any other year. There were also more significant tornadoes during that 24 hours than any other entire week on record.

Most intense (by minimum surface air pressure)

 * Most intense at landfall: 892 mb (26.35 inHg); Craig Key, Florida, eye of the Labor Day Hurricane, 1935-09-02.

Lightning

 * Longest lightning bolt: 190 km (118 miles) 2001-10-13.

Other categories

 * Lowest equivalent sea level pressure ever recorded: 850.0 mb; recorded in tornado at surface by probe near Manchester, South Dakota on 2003-06-24 (The place is located 1540 ft above sea level, normal air pressure is 960.0 mb).