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Southern Ontario Tornado Outbreak Of 2005
The Southern Ontario tornado outbreak of 2005 was a series of thunderstorms on the afternoon of August 19, 2005, that spawned tornadoes damaging homes in the Conestoga Lake, Fergus, and Tavistock areas. A tornado was reported within the Toronto city limits, although this was never officially confirmed by the Meteorological Service of Canada. The storms morphed into heavy rain cells when reaching Toronto. The Insurance Bureau of Canada has estimated that insured losses were the highest in the province's history, exceeding 500 million Canadian dollars, two and a half times that of Ontario's losses during the 1998 ice storm and the second largest loss event in Canadian history until another event of torrential rain of July 8, 2013 (1 billion CAD). Meteorological events On the early morning of August 19, a low-pressure area was sitting over Northern Michigan with a cold front southwestward. This same system had been causing an outbreak of tornadoes over Wisconsin the day before. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Dollar
The Canadian dollar ( symbol: $; code: CAD; french: dollar canadien) is the currency of Canada. It is abbreviated with the dollar sign $, there is no standard disambiguating form, but the abbreviation Can$ is often suggested by notable style guides for distinction from other dollar-denominated currencies. It is divided into 100 cents (¢). Owing to the image of a common loon on its reverse, the dollar coin, and sometimes the unit of currency itself, are sometimes referred to as the ''loonie'' by English-speaking Canadians and foreign exchange traders and analysts. Accounting for approximately 2% of all global reserves, the Canadian dollar is the fifth-most held reserve currency in the world, behind the U.S. dollar, the euro, the yen and sterling. The Canadian dollar is popular with central banks because of Canada's relative economic soundness, the Canadian government's strong sovereign position, and the stability of the country's legal and political systems. Histo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrodynamical Helicity
:''This page is about helicity in fluid dynamics. For helicity of magnetic fields, see magnetic helicity. For helicity in particle physics, see helicity (particle physics).'' In fluid dynamics, helicity is, under appropriate conditions, an invariant of the Euler equations of fluid flow, having a topological interpretation as a measure of linkage and/or knottedness of vortex lines in the flow. This was first proved by Jean-Jacques Moreau in 1961 and Moffatt derived it in 1969 without the knowledge of Moreau's paper. This helicity invariant is an extension of Woltjer's theorem for magnetic helicity. Let \mathbf(x,t) be the velocity field and \nabla\times\mathbf the corresponding vorticity field. Under the following three conditions, the vortex lines are transported with (or 'frozen in') the flow: (i) the fluid is inviscid; (ii) either the flow is incompressible (\nabla\cdot\mathbf = 0), or it is compressible with a barotropic relation p = p(\rho) between pressure p and density \rh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Toronto Area
The Greater Toronto Area, commonly referred to as the GTA, includes the City of Toronto and the regional municipalities of Durham, Halton, Peel, and York. In total, the region contains 25 urban, suburban, and rural municipalities. The Greater Toronto Area begins in Burlington in Halton Region, and extends along Lake Ontario past downtown Toronto eastward to Clarington in Durham Region. According to the 2021 census, the Census Metropolitan Area (CMA) of Toronto has a total population of 6,202,225. However, the Greater Toronto Area, which is an economic area defined by the Government of Ontario, includes communities which are not included in the CMA as defined by Statistics Canada. Extrapolating the data for all 25 communities in the Greater Toronto Area from the 2021 Census, the total population for the economic region included 6,712,341 people. The Greater Toronto Area is a part of several larger areas in Southern Ontario. The area is also combined with the city of Hamilton to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guelph
Guelph ( ; 2021 Canadian Census population 143,740) is a city in Southwestern Ontario, Canada. Known as "The Royal City", Guelph is roughly east of Kitchener and west of Downtown Toronto, at the intersection of Highway 6, Highway 7 and Wellington County Road 124. It is the seat of Wellington County, but is politically independent of it. Guelph began as a settlement in the 1820s, established by Scotsman John Galt, who was in Upper Canada as the first Superintendent of the Canada Company. He based the headquarters, and his home, in the community. The area – much of which became Wellington County – had been part of the Halton Block, a Crown Reserve for the Six Nations Iroquois. Galt would later be considered as the founder of Guelph. For many years, Guelph ranked at or near the bottom of Canada's crime severity list. However, the 2017 Crime Severity Index showed a 15% increase from 2016. Guelph has been noted as having one of the lowest unemployment rates in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salem, Wellington County
Salem is a compact rural community and unincorporated place in the incorporated township (Canada)#Ontario, township of Centre Wellington, Ontario, Centre Wellington, Wellington County, Ontario, Wellington County, in southwestern Ontario, Canada. Economy Local business area in Salem is mainly found along and near Woolwich Street (County Road) and County Road 7 including: * Esso gas station with convenience store * Ontario Potato Board office * Strata Gallery * Mirage Limousine * Salem Collision * Deboer's Farm Equipment * Burns Motorsports * Artech Millwright * Shantz Automotive Transportation Salem has two bridges that over Irvine Creek (Ontario), Irvine Creek: * Truss bridge#Pratt truss, Pratt truss bridge carrying Woolwich Street West: paved single lane in each direction with single sided sidewalk for pedestrians on northside * Beam bridge, Concrete beam bridge carried unpaved Washington Street: requiring traffic to yield as bridge too narrow to carry two way traffic has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elmira, Ontario
Elmira is the largest community in the township of Woolwich, Ontario, Canada. It is north of the city of Waterloo near the Regional Municipality of Waterloo's northern border with Wellington County. The community was listed in the 2016 Canadian census as having a population of 10,161. Waterloo Region is home to the largest population of Old Order Mennonites in Canada, particularly around St Jacobs and Elmira. They are often seen on the local roads using traditional horse and buggy transportation; many also use horses to pull the implements in their farm fields. History The land comprising Woolwich Township belonged to the Huron Nation, then to the Mohawk Nation. The first European settlers arrived in Woolwich Township in the late 18th century. In 1798, William Wallace was one of the first settlers after he was deeded of land on the Grand River for $16,364. A block three of First Nations Lands, this area now comprises a large part of Woolwich Township. The parcel of land calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Severe Thunderstorm Warning
A severe thunderstorm warning ( SAME code: SVR) is a severe weather warning product issued by regional offices of weather forecasting agencies throughout the world to alert the public that severe thunderstorms are imminent or occurring. A severe thunderstorm warning is issued when Doppler weather radar, trained storm spotters or local emergency management personnel indicate that a thunderstorm is producing large hail and high winds capable of causing significant damage, and is expected to continue producing severe weather along the storm's projected track. Flooding is also sometimes caused by torrential rainfall produced by a thunderstorm. (In these cases, a flood advisory or flash flood warning may be issued to alert the public of the flooding threat.) Definition A severe thunderstorm warning indicates the warned area is in impending danger from hail or wind speeds meeting warning criteria as well as from lightning and hydrological impacts associated with the storm ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fujita Scale
The Fujita scale (F-Scale; ), or Fujita–Pearson scale (FPP scale), is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determined by meteorologists and engineers after a ground or aerial damage survey, or both; and depending on the circumstances, ground-swirl patterns (cycloidal marks), weather radar data, witness testimonies, media reports and damage imagery, as well as photogrammetry or videogrammetry if motion picture recording is available. The Fujita scale was replaced with the Enhanced Fujita scale (EF-Scale) in the United States in February 2007. In April 2013, Canada adopted the EF-Scale over the Fujita scale along with 31 "Specific Damage Indicators" used by Environment Canada (EC) in their ratings. Background The scale was introduced in 1971 by Ted Fujita of the University of Chicago, in collaboration with Allen Pearson, head of the National Sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercell
A supercell is a thunderstorm characterized by the presence of a mesocyclone: a deep, persistently rotating updraft. Due to this, these storms are sometimes referred to as rotating thunderstorms. Of the four classifications of thunderstorms (supercell, squall line, multi-cell, and single-cell), supercells are the overall least common and have the potential to be the most severe. Supercells are often isolated from other thunderstorms, and can dominate the local weather up to away. They tend to last 2–4 hours. Supercells are often put into three classification types: classic (Normal precipitation level), low-precipitation (LP), and high-precipitation (HP). LP supercells are usually found in climates that are more arid, such as the high plains of the United States, and HP supercells are most often found in moist climates. Supercells can occur anywhere in the world under the right pre-existing weather conditions, but they are most common in the Great Plains of the United State ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Huron
Lake Huron ( ) is one of the five Great Lakes of North America. Hydrology, Hydrologically, it comprises the easterly portion of Lake Michigan–Huron, having the same surface elevation as Lake Michigan, to which it is connected by the , Straits of Mackinac. It is shared on the north and east by the Canadian province of Ontario and on the south and west by the U.S. state of Michigan. The name of the lake is derived from early French explorers who named it for the Wyandot people, Huron people inhabiting the region. The Huronian glaciation was named from evidence collected from Lake Huron region. The northern parts of the lake include the North Channel (Ontario), North Channel and Georgian Bay. Saginaw Bay is located in the southwest corner of the lake. The main inlet is the St. Marys River (Michigan–Ontario), St. Marys River, and the main outlet is the St. Clair River. Geography By surface area, Lake Huron is the second-largest of the Great Lakes, with a surface area of — ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collingwood, Ontario
Collingwood is a town in Simcoe County, Ontario, Canada. It is situated on Nottawasaga Bay at the southern point of Georgian Bay. Collingwood is well known as a tourist destination, for its skiing in the winter, and limestone caves along the Niagara Escarpment in the summer. History The land in the area was first inhabited by the Iroquoian-speaking Petun nation, which built a string of villages in the vicinity of the nearby Niagara Escarpment. They were driven from the region by the Iroquois in 1650 who withdrew from the region around 1700. European settlers and freed Black slaves arrived in the area in the 1840s, bringing with them their religion and culture. Collingwood was incorporated as a town in 1858, nine years before Confederation, and was named after Admiral Cuthbert Collingwood, Horatio Nelson, Lord Nelson's second in command at the Battle of Trafalgar, who assumed command of the British fleet after Nelson's death. The area had several other names associated with it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
