This Day in National/World Weather History ...
 30 July 1119 → The earliest tornado reported on the European mainland struck Vysehrad, Czechia (today Prague, Czech Republic). It destroyed the palace of a Czech duke.
 30 July 1997 → Two waterspouts moved onshore in northern Virginia Beach, VA. One tracked into Norfolk.
 30 July 1999 → At nine o'clock in the morning Chicago recorded its highest ever dew point temperature of 82 degrees. The temperature at the time was 88, resulting in a heat index of 108. The dew point is an indication of the amount of moisture in the air.

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January 22, 1982:

A winter storm of long duration lasting 3 days from the 22nd to the 24th virtually paralyzed South Dakota with snowfall of 6 to 20 inches. Subzero temperatures statewide coupled with strong winds of 30 to 50 mph brought wind chills of 50 to 70 below zero. One woman died of exposure near her home in Aurora County. Snow drifted as high as 15 feet. Blowing snow reduced visibilities to near zero for most of the duration of the storm. Hundreds of motorists were stranded. Numerous traffic accidents occurred due to near zero visibilities. Some power outages occurred. Major highways, interstates, and airports were closed. Numerous businesses and schools were closed for several days.

January 22, 1997:

North winds of 25 to 40 mph along with the existing snow cover resulted in blizzard conditions and extreme wind chills across far northeast South Dakota and west central Minnesota. The low visibilities and drifting snow made travel almost impossible resulting in some road and school closures.

January 22, 2010:

A powerful mid season winter storm moved northeast out of the four corners region of the United States and into the Northern Plains. Ahead of this system, warm and moist air streamed northward creating widespread fog and freezing fog conditions during the days leading up to the event. Heavy riming frost began to accumulate on power lines and tower guide wires, placing heavy strain on them by the time the freezing rain arrived in the late morning and afternoon hours on Friday, January 22nd. Along with the freezing rain, southeast winds gusting over 30 mph also created a strain on sagging power lines. Scattered power outages were reported as early as Tuesday, January 19th due to the frost covered lines, but the majority of power line and power pole damage occurred during the evening of the 22nd and the morning of the 23rd. The freezing rain that arrived during the afternoon and evening of the 22nd was the proverbial "straw that broke the camel"s back". By the time the rain, freezing rain, and snow ended Saturday morning, January 23rd, nearly every power cooperative across central and northeast South Dakota suffered extensive power pole and power line damage. Also, several radio and television towers were downed by the icing and strong winds. The heavy icing and strong winds downed over 5000 power poles along with 21,000 miles of power lines across South Dakota leaving thousands of households without power. Several homes sustained substantial damage caused by broken water pipes. Power was still not restored for many customers until several weeks after the event. Power line crews from Minnesota, Kansas, and Oklahoma were called upon to help restore power. Several counties, along with the state emergency operations center, opened emergency shelters for people to stay. Forty-one National Guard members were on active duty across the state helping to restore power. Many flights were delayed or cancelled at several airports. The ice and the wind also helped topple a canopy at a truck stop at the intersection of Highway 20 and 212. On January 23rd, a radio and television signal transmission tower northwest of South Shore was downed along with a tower north of Reliance and a radio tower southwest of Marvin. The hardest hit area with this storm was the Cheyenne River and Standing Rock Sioux reservations in central and north central South Dakota. With no electricity, residents were dependent on donations of food, bottled water, blankets, heat and light sources, toiletries, and cots. The rural water system serving the Cheyenne River Sioux Tribe was shut down resulting in the state EOC shipping water to the reservation. The Governor asked for a presidential disaster declaration for most of the counties and three reservations. The request was for both public and individual assistance for total damages estimated over 20 million dollars for the state.


Record Highs: Record Lows:
Aberdeen: 58 (1942) Aberdeen: -30 (1937)
Kennebec: 64 (1942) Kennebec: -33 (1927)
Mobridge: 56 (1942) Mobridge: -31 (1927)
Pierre: 58 (1967) Pierre: -19 (1966)
Sisseton: 56 (1942) Sisseton: -35 (1936)
Timber Lake: 60 (1942) Timber Lake: -28 (1917)
Watertown: 54 (1981) Watertown: -31 (1936)
Wheaton: 45 (1968) Wheaton: -29 (1927)

Record Precipitation: Record Snowfall:
Aberdeen: 1.00" (1897) Aberdeen: 5.0" (1929)
Kennebec: 0.24" (2011) Kennebec: 5.0" (2011)
Mobridge: 0.31" (1982) Mobridge: 4.8" (1982)
Pierre: 0.54" (1982) Pierre: 5.4" (1982)
Sisseton: 0.45" (1979) Sisseton: 6.5" (1982)
Timber Lake: 0.70" (1952) Timber Lake: 5.5" (1952)
Watertown: 0.50" (1979) Watertown: 5.0" (1979)
Wheaton: 0.70" (1982) Wheaton: 8.4" (1952)


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