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Unfortunately detailed records of tornadoes only go back as far as 1950, and even then, for the first 30 years or so of that period most weak tornadoes (which account account for the majority of tornadoes) were missed. Since 1950 Montana has recorded 386 tornadoes.
However, it may be possible to provide a rough estimate. In the past 30 years, in which data has been recorded more accurately, Montana has experienced 265 tornadoes. If we take the percentage of strong tornadoes from this period (6.8%) and apply it to the data since 1950 we arrive at an estimate of about 700 tornadoes, assuming the percentage of strong tornadoes stays about the same. If the same average annual number of tornadoes occurred over the past 100 years that gives us an estimate of about 1,100 tornadoes.
This may sound like a lot, but it works out to an average of only 11 tornadoes per year, most of which are weak, across a very large area.
Note that this is a very rough estimate and is based on the assumption that frequency patterns over that past 30 years and 62 years are the same as those over a 100 year period.
What else can I help you with?
How many tornadoes have there been in Montana?
A full figure cannot be given. Official record only extend back to 1950, with relatively accurate figures only going back to about 1990. Montana's sparse population means that many tornadoes are likely missed. That said, since official records began in 1950, there have been 389 tornadoes recorded in Montana.
How many tornadoes have there been in New york State in the past ten years?
In the past ten years, there have been around 40-50 tornadoes that have touched down in New York State. Tornadoes in New York are relatively rare compared to states like Oklahoma or Texas.
How many people died in tornadoes in the last 10 years?
In the past 10 years tornadoes at least 1402 people have been killed by tornadoes, including 1089 in the United States.
How many tornadoes have there been in Davenport Iowa?
There have been three tornadoes in Davenport Iowa since records began in 1950.
How many tornadoes have hit Hawaii?
According to my research there has been so far 80 tornadoes that have hit Hawaii.
How many Tornadoes have hit Montana?
There were 367 confirmed tornadoes in Montana from 1950 to 2009.
Who many tornadoes have their been in the past ten years?
In the years 2000-2010 there have been 13,817 tornadoes confirmed in the United States.
How many tornadoes have there been in Montana?
A full figure cannot be given. Official record only extend back to 1950, with relatively accurate figures only going back to about 1990. Montana's sparse population means that many tornadoes are likely missed. That said, since official records began in 1950, there have been 389 tornadoes recorded in Montana.
How many tornadoes have happened in the past five years?
There have been about 6,300 tornadoes in the U.S. in the past 5 years with more worldwide.
How many tornadoes have there been over the last fifty years?
too many to count
How many tornadoes have been in Alexandria Egypt for the past 100 years?
No tornadoes there. The area doesn't support that type of weather.
How many deaths from tornadoes have been in Texas since 2000-2007?
In the years 2000-2007 tornadoes killed 24 people in Texas.
When were tornadoes in Calgary?
There have been many over the years. The last one was in April 2016.
How many tornadoes in Oklahoma from 1950 - 2010?
Since 1950 there have been 3,288 confirmed tornadoes in Oklahoma. The number of actual tornadoes is probably higher as most weak tornadoes (F0 and F1) were not recorded in the earlier years.
How many tornadoes have there been in New york State in the past ten years?
In the past ten years, there have been around 40-50 tornadoes that have touched down in New York State. Tornadoes in New York are relatively rare compared to states like Oklahoma or Texas.
How many tornadoes has there been in America?
There have been many thousands of tornadoes in the United states. This country averages over 1000 tornadoes every year.
How many F1 tornadoes did Alaska get in 2011?
So far there have been no tornadoes recorded in Alaska in 2011. In the past 60 years the state has only has 3 recorded tornadoes. All rated F0.
