This Day in National/World Weather History ...
 18 September 1988 → In Cold Bay, AK, winds up to 75 mph and gusts up to 96 mph were caused by the remnants of Typhoon Hal.
 18 September 1991 → Duluth, MN, saw 2.4" of snow, making it their earliest snow on record and heaviest September snowfall by almost an inch.
 18 September 2003 → Though Hurricane Isabel had reached Category 5 status as it crossed the entire width of the Atlantic Ocean, it had weakened to a Category 2 by the time it made landfall in North Carolina on this date. Nevertheless, flooding was extreme as the storm produced up to 20 inches of rainfall in North Carolina and Virginia.

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June 17, 1944:

On this date, six estimated F2 or greater tornadoes were tracked across Faulk, Codington, Brown, Day, Grant, and Roberts County in South Dakota as well as Big Stone in Minnesota. The first tornado touched down at approximately 3:30 pm CST in Faulk County. This estimated F2 tornado destroyed all buildings except the house on a farm 7 miles northeast of Faulkton. The next tornado occurred at 4:00 pm CST in Codington County, where barns were destroyed. Cattle and a truck were thrown into Grass Lake, near Wallace. About the same time, in Brown County, a tornado moved northeast from just northeast of Warner, and crossed the town of Bath. This storm killed two people and injured another twelve. A couple was killed in the destruction of their home. Twenty homes in Bath were damaged. A brick school had its upper story torn off. Another tornado moved through Codington County at 4:45 pm CST, killing three and injuring twenty five. This F4 strength tornado moved northeast from two miles northeast of Henry, passing over Long Lake and ending 2 miles northwest of Florence. The funnel was described as snake like over Long Lake and massive as it swept through five farms southwest of Florence. Over 100 head of cattle were killed, and about a dozen homes were destroyed. In Day county an estimated F2 moved due north from 4 miles south of Webster, ending 2 miles northeast of Roslyn. This storm passed two miles east of Webster where barns were destroyed and livestock was killed on a half dozen farms. At 5:15 pm CST a monster of a storm moved northeast from 5 miles south of Summit, passing 3 miles south of Wilmot and ending about 3 miles east of Beardsley, Minnesota. This massive tornado had an estimated width of 1500 yards and traveled 30 miles. Along the path, eight people were killed and another forty three were injured. Farm devastation southwest and south of Wilmot was as complete as it could be with some farms reportedly left without even debris on the property. About 15 farms in South Dakota reported F3-F5 damage. From this day, the Red Cross counted 13 dead and 560 people injured across the state.

June 17, 2008:

Thunderstorms produced damaging large hail in Gregory County in southeast South Dakota during the afternoon of June 17th. The hail was widespread and caused close to 100 percent damage to crops in some areas, according to the Farm Service Agency director. Winter wheat, soybean, corn, and hay crops were affected. The large hail also damaged buildings and vehicles, and broke windows at some locations. The thunderstorms also produced marginally large hail at locations in Hutchinson and Charles Mix Counties.

June 17, 2010:

In Freeborn County, Minnesota, a tornado initially moved northeast to approximately 3.5 miles west of Conger, where it began to move more to the east-northeast. West of the town of Armstrong, it began tracking nearly due north to just west of Manchester, where it than began to move to the north-northwest, before dissipating 1.5 miles west of the town of Hartland. Accounting for the changes in direction of this track, the actual path length covered by the tornado was 19.95 miles. Near 180th Street and County Road 2, a home was likely in the outer circulation of the tornado, as it sustained some roof and siding damage. A barn was also destroyed to its brick foundation and a car was also flipped over lengthwise. Some evidence of tree debarking was noted. The tornado continued to the northeast and caused extensive crop damage approximately 500 yards in width. Near County Roads 17 and 63, the tornado intensified to produce EF-3 damage, impacting a farmstead and causing the complete destruction of three swine barns and the loss of 12 head of swine. Two empty grain bins were completely blown away at this location. The house at this location had some roof damage but appeared to be northwest of the main tornado path. Approximately 100 feet northeast of the house, a 150 foot tripod style wind turbine tower was twisted and toppled. This location also marked the beginning of crops being completely raked, with only stalks of corn left, and soybean fields being almost unrecognizable. After passing through this farmstead the tornado took a more easterly path across County Road 63, and maintained EF-3 strength. After passing County Road 63, another farmstead was hit, and two empty harvester silos were toppled. The tornado continued to the northeast across County Road 4, where continued raking of the fields was noted with significant deposition of debris along the tornado path. Numerous trees were toppled at County Road 89 where it turns to the north. The tornado continued to the north-northeast, grew to 1000 yards, and around 5:50 PM CDT, impacted a farmstead along County Road 12 two miles north of Conger, where EF-4 damage was observed. The house at this location was completely destroyed, as was the barn and several other buildings. Extensive tree damage was noted with nearly all branches being removed from the trunks. Debarking of trees was widespread at this location. A car was also tumbled a distance of 3200 feet, coming to rest in a field east of County Road 12. The tornado continued to the northeast across County Road 69 and County Road 46, where it weakened slightly to EF-3 intensity. As it crossed County Road 46, a house was rotated off the foundation. The tornado was approximately 700 yards wide at this point. To the north-northeast, a swine barn was destroyed with sheet metal being carried off to Interstate 90. At this same time, a satellite tornado developed and caused damage in the town of Armstrong. The main tornado continued to the north-northeast and was 500 yards in width. The tornado crossed County Road 74 and caused EF-2 damage to three farmsteads. One farmstead with a manufactured home was hit, resulting in one fatality and one severe injury. The tornado crossed Interstate 90 just west of County Road 14 as it grew to one third of a mile in width and strengthened to EF-3 intensity. Several farmsteads saw significant damage between Sugar Lake and County Road 14, with a house and two barns completely destroyed. From this point the tornado continued to the north, growing to one mile in width. Around 6:00 PM CDT, a house and barn were destroyed approximately one mile west of Manchester on County Road 25, where extensive tree and structural damage was also noted at several properties in the area. Additionally, west of this tornadic damage, a separate area of tree and structural damage was caused by strong thunderstorm winds associated with a rear flank downdraft. About one mile north, the tornado weakened slightly to EF-2 intensity, where it damaged three full grain bins near County Road 29. The tornado was approximately 1300 yards at this point. Further north, at County Road 95, the tornado continued to weaken, although a farmstead still received EF-1 damage to trees and structures. Finally, the tornado continued north and began to narrow and weaken. It dissipated west of Hartland. One person was killed and 14 injured from this tornado. Another EF-4 tornado tracked northward for nearly 9 miles to about 12 miles north of Mayville by 405 PM CDT and crossed into Grand Forks County in North Dakota. It then continued for another 8 miles to around 10 miles west of Thompson by 418 PM CDT, for a total track length of nearly 17 miles. Trees in shelterbelts and farmsteads were snapped, uprooted, or sheared off. One well constructed house near Holmes was completely swept from its foundation and destroyed. Peak winds were estimated at 185 mph. A farm shop about five and one-half miles north of Mayville was hit by the tornado, destroying the shop. A man inside survived with cuts on his hand. There were several other reports of tornadoes across North Dakota and Minnesota on this day.


Record Highs: Record Lows:
Aberdeen: 105 (1933) Aberdeen: 40 (1915)
Kennebec: 102 (1940) Kennebec: 38 (1912)
Mobridge: 105 (1931) Mobridge: 39 (1915)
Pierre: 100 (1940) Pierre: 44 (1974)
Sisseton: 101 (1933) Sisseton: 40 (1999)
Timber Lake: 103 (1933) Timber Lake: 42 (2000)
Watertown: 99 (1933) Watertown: 30 (1908)
Wheaton: 99 (1995) Wheaton: 37 (1915)

Record Precipitation:
Aberdeen: 2.25" (1932)
Kennebec: 1.26" (1955)
Mobridge: 1.07" (1932)
Pierre: 0.91" (1975)
Sisseton: 1.72" (1959)
Timber Lake: 1.25" (1962)
Watertown: 2.28" (1994)
Wheaton: 1.35" (1992)


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