An F0 or EF0 tornado, the weakest category, damages trees, but not substantial structures.

Based on the degree of damage left behind, it is estimated that the dust devil produced winds as high as 75 mph ( 120 km / h ), which is equivalent to an EF0 tornado.

On May 8, 2008 an EF0 tornado touched down in Port William, causing little damage and no fatalities.

This mobile home was destroyed by a relatively weak Enhanced Fujita Scale | EF0 tornado.

In the United States, 80 % of tornadoes are EF0 and EF1 ( T0 through T3 ) tornadoes.

Perris is also notable for being a slight hotspot for tornadoes, the most recent of which struck down with an EF0 rating on August 12, 2012.

They usually rate no higher than EF0 on the Enhanced Fujita scale, generally exhibiting winds of less than.

However, they are usually small, short lived, and almost always rated as EF0 or EF1 size storms.

The basement or belowground shelters also will serve for tornado or hurricane protection.

* 1948 – The first successful tornado forecast predicts that a tornado will strike Tinker Air Force Base, Oklahoma.

Occasionally, a single storm will produce more than one tornado, either simultaneously or in succession.

It is often thought that opening windows will lessen the damage caused by the tornado.

Seven new communications towers and backup power generation will be features of the new reinforced concrete building, which will be able to withstand a Category F3 tornado.

In the summer of 2010, the Progress school was destroyed by a tornado, and will not reopen, with the children now either going to school in Lemmon or in Faith.

:: Those of us who are able to look back from thirty years hence on this tornado of death — will conclude with a dreadful laugh that if it had never come, the state of the world would be very much the same.

If severe weather actually does occur, a tornado watch will be upgraded to a tornado warning.

Typically a tornado, if present, will form in this area.

If a tornado is detected on radar or sighted, a tornado warning will be issued either in replacement of or concurrently to the existing severe thunderstorm warning.

Generally, but not always, a severe thunderstorm watch or tornado watch will precede a warning.

#* For short term events ( like a tornado ) this value could be set to 0000, which will purge the warning after the message has been received.

Inside such chests, the player can obtain items such as more health, throwing darts, a powered-up sword, extra lives, and a magic ball that will temporarily turn Alex Kidd into an invincible tornado.

Moreover, it presents the danger that an intense tornado will hit people taking shelter as well as bystanders stuck in traffic, who are massed in a vulnerable location incurring the possibility of a significant death toll.

Downburst damage will radiate from a central point as the descending column spreads out when impacting the surface, whereas tornado damage tends towards convergent damage consistent with rotating winds.

If any shelter is designed and built according to certain guidelines then it can be called a tornado shelter which will provide near absolute protection.

Patrolling the house is Elmyra ( who walks around, and will speed up if Babs is in sight ), Dizzy Devil ( who stands in place unless tornado spinning, moves quickly ) and Arnold the Pitbull ( walks around slowly, generally the least menacing ).

The wall cloud withers and will often be gone by the time the tornado lifts.

Some still believe that opening windows ahead of a tornado will reduce the damage from the storm, but this is not true.

Borculo is probably known best for the tornado that destroyed much of the village on 10 August 1925.

It is thought by some people that taking shelter under highway overpasses or in the southwest corner of the building provides extra protection from a tornado, but both of these probably increase the danger of injury or death.

This tornado damage to an Illinois home would be considered an " Act of God " for insurance purposes

* 1999 – The southwestern portion of Oklahoma City, Oklahoma is devastated by an F5 tornado, killing forty-five people, injuring 665, and causing $ 1 billion in damage.

* 1970 – The Lubbock Tornado, a F5 tornado, hits Lubbock, Texas, killing 26 and causing $ 250 million in damage.

The most recent EF5 tornado in the state to cause damage and casualties was the 2011 Joplin tornado, which destroyed roughly 1 / 3 of the city of Joplin.

The damage toll from this tornado was estimated at 50 million USD in 1982.

* June 8 – A deadly F5 tornado nearly destroys the town of Barneveld, Wisconsin, killing 9 people, injuring nearly 200, and causing over $ 25, 000, 000 in damage.

One tornado was reported to have a damage path only 7 feet ( 2 m ) long.

Finally, the visible funnel extends to the ground, and the tornado begins causing major damage.

As the funnel descends, the RFD also reaches the ground, creating a gust front that can cause severe damage a good distance from the tornado.

Usually, the funnel cloud begins causing damage on the ground ( becoming a tornado ) within a few minutes of the RFD reaching the ground.

This can last anywhere from a few minutes to more than an hour, and during that time a tornado often causes the most damage, and in rare cases can be more than one mile ( 1. 6 km ) across.

Even though the tornado is dissipating, it is still capable of causing damage.

These vortices often create small areas of heavier damage along the main tornado path.

A " Friday the 13th " storm in November 1981 brought winds up to, with other storms including the inauguration day storm of January 20, 1993, the Guadalupe Day storm of December 12, 1995 ( with winds up to at Washougal, Washington ) and small tornado on January 10, 2008, which destroyed a boathouse at Vancouver Lake and caused damage to buildings in Hazel Dell before dissolving near Hockinson.

Selsey is known as a tornado hotspot, with small tornadoes hitting the town in 1986, 1998 and 2000, with the 1998 tornado causing an estimated £ 10 million of damage to 1, 000 buildings.

However, an F2 tornado did hit downtown on August 11, 1999, killing 1 person, injuring 60, and causing $ 170 million in damage.

Tropical Storm Bonnie would cause minor damage in 2004, spawning a minor tornado in the process.

Tornadoes have been seen around the area of Bendigo and, although rare, the 2003 Bendigo tornado passed through Eaglehawk and other parts of the city causing major damage to homes and businesses.

The tornado ripped off the roof of a families house, and also caused some minor damage to the PS Pevensey.