This Day in National/World Weather History ...
 25 July 1956 → In a dense fog bank off Nantucket Island, the Italian passenger ship Andrea Doria collided with the Swedish liner Stockholm at full speed. Eleven hours later the Andrea Doria sank. However, 1660 were rescued and only 51 were lost.
 25 July 1988 → A storm system brought heavy rains to Tasmania, Australia. Coastal areas were flooded by high tides and storm surge.
 25 July 2003 → Lightning struck a home during an overnight thunderstorm southwest of Oslo, Norway. The charge moved into the bedroom and through an iron bed, with a Norwegian couple sleeping in it. The couple was unharmed, but the lightning strike caused the room to flash "like 10 welder's torches" and burned out all of the electrical sockets.
 25 July 2006 → Through today, a two week long heat wave in California killed 140 people.
 25 July 2007 → Canada's highest humidex (roughly analogous to the U.S.'s heat index) reading of 127F at Carman, Manitoba.

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December 21, 1968:

A blizzard visited South Dakota and Minnesota on the 21st and 22nd. Snowfall during the snowstorm was generally 1 to 2 inches in the western part of South Dakota, to 5 to 10 inches in Minnesota, with more than 12 inches in an area from Artichoke Lake in Big Stone County to the southeast in Minnesota, and up to 18 inches in east central and southeast South Dakota. The snowfall, on top of an already-existing 10-inch layer of powdery snow, was whipped by 30-50 mph winds, with some winds over 50 mph in Minnesota, that occasionally reduced visibility to near zero, created snow drifts up to 10 feet or more, stopped almost all forms of traffic, blocked many primary highways for most of Sunday the 22nd, and blocked most of the secondary roads as well as some other roads for nearly a week.

Due to good blizzard warnings and the fact that the blizzard occurred late Saturday through Sunday, the highway patrol reported a minimum of accidents and stranded travelers. Most schools were closed and other activities were curtailed. Many utility lines were down. Record December snowfall amounts were recorded for more than 40 locations in Minnesota. Artichoke Lake in Big Stone County received 16 inches of snow from this storm, by far its largest daily snowfall on record for any month of the year. Clear Lake, in Deuel County, measured 18 inches of snow, which also remains the largest daily snowfall on record for any month in that location. Watertown and Bryant received nine inches from this blizzard, while Castlewood reported seven inches.

December 21, 1984:

Strong winds gusted to 60 mph in the western through north central parts of South Dakota during the morning of the 21st.


Record Highs: Record Lows:
Aberdeen: 50 (1979) Aberdeen: -31 (1916)
Kennebec: 66 (1933) Kennebec: -32 (1916)
Mobridge: 59 (1933) Mobridge: -29 (1989)
Pierre: 64 (1933) Pierre: -25 (1989)
Sisseton: 53 (1979) Sisseton: -27 (1989)
Timber Lake: 52 (1954) Timber Lake: -33 (1989)
Watertown: 55 (1900) Watertown: -31 (1916)
Wheaton: 48 (1979) Wheaton: -34 (1916)

Record Precipitation: Record Snowfall:
Aberdeen: 0.30" (1918) Aberdeen: 3.0" (1918)
Kennebec: 0.40" (1920) Kennebec: 4.0" (1968)
Mobridge: 0.30" (1995) Mobridge: 4.0" (1967)
Pierre: 0.61" (1902) Pierre: 6.1" (1902)
Sisseton: 0.50" (1937) Sisseton: 2.0" (1967)
Timber Lake: 0.40" (1918) Timber Lake: 4.0" (1918)
Watertown: 0.30" (1968) Watertown: 3.0" (1968)
Wheaton: 0.44" (1918) Wheaton: 4.0" (1996)


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