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 24 October 1933 → A London high fog settled over the city causing "midnight at mid-day" as a temperature inversion formed, trapping fog and smoke beneath it. The sun turned yellow, red, and sometimes disappeared. A pilot said it looked like a huge black mushroom shrouding the city.
 24 October 1992 → Near Flagstaff, AZ, three tornadoes touched down. One tornado tracked across the Crater National Monument.

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April 9, 1997:

A late season storm produced snow from the Black Hills through South Central South Dakota. The greatest amounts occurred in a 40 mile wide swath generally along and south of Interstate 90. Snowfall amounts include 9 inches at Rapid City, 12 inches at Deerfield, 10 inches at Custer, 11 inches at Mission, and 12 inches at Winner. Outside this swath, snowfall generally ranged from 3 to 6 inches.


Record Highs: Record Lows:
Aberdeen: 91 (1977) Aberdeen: 8 (1997)
Kennebec: 93 (1977) Kennebec: 9 (1989)
Mobridge: 89 (1977) Mobridge: 7 (1997)
Pierre: 94 (1977) Pierre: 14 (1989)
Sisseton: 90 (1977) Sisseton: 3 (1997)
Timber Lake: 90 (1977) Timber Lake: 4 (1997)
Watertown: 85 (1977) Watertown: 4 (1997)
Wheaton: 89 (1977) Wheaton: 11 (1997)

Record Precipitation: Record Snowfall:
Aberdeen: 0.90" (1904) Aberdeen: 4.0" (1904)
Kennebec: 1.00" (1913) Kennebec: 10.0" (1913)
Mobridge: 0.30" (1949) Mobridge: 1.6" (1975)
Pierre: 0.78" (1949) Pierre: 5.8" (2013)
Sisseton: 0.46" (1969) Sisseton: 2.0" (1932)
Timber Lake: 0.36" (1995) Timber Lake: 3.0" (1995)
Watertown: 0.29" (1978) Watertown: 2.0" (1913)
Wheaton: 1.32" (1978) Wheaton: 2.0" (1952)


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