Tornadoes in Kent County, Michigan on 1967/4/21

 
 
 

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The Tornado History Project generates approximate paths through separate historical archives provided by the Storm Prediction Center (SPC) and the National Climatic Data Center (NCDC). Paths generated from the NCDC data are typically more detailed, but neither archive gives exact path information. There are several reasons that paths may be inaccurate:

  • Tornado touchdown and liftoff coordinates were recorded with only 2 digits of decimal precision (i.e. [33.72, -86.15] vs [33.71689, -86.15463]). As a consequence, the observed points on the map may be slightly off from actual. Note that beginning in 2009, up to 4 digits of decimal precision are given.
  • Coordinates have not historically been calculated via GPS (Global Positioning System). Thus, tornado touchdown and liftoff coordinates should be considered as estimates only.
  • Tornadoes may not have been in contact with the ground for the entire path as depicted on the map. Storm damage in any location depicted under the "path" should not be inferred.
  • Although paths are drawn as straight lines between any two sets of coordinates, the tornado may have "zigzagged" in some way.
  • Although paths are drawn as uniform thin lines on the map, it is likely that the tornado changed size over its lifetime. Damage in any location depicted under (or not under) the "path" should not be inferred.

Even with the above in mind, the data is the best available. If you see a path that is depicted incorrectly, please post a comment in the tornado forum indicating why you belive the path to be incorrect.

Paths generated from NCDC data are typically more detailed due to the way coordinates are listed in each archive:

  • SPC database - A maximum of 2 coordinates (touchdown and liftoff) is given for each tornado, or each state segment of a tornado if it is a multi-state tornado. Thus the vast majority of paths are depicted as simple straight lines.
  • NCDC database - Some tornadoes have mutliple sets of coordinates within any state, generally corresponding to entry and exit points by county. Thus, since more coordinates have been used to draw the path, the depicted path should be more accurate. Having said that, most tornadoes do not have additional path data in the NCDC archive. When they do, paths are drawn from the NCDC data.

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Summary   Definitions |?|

The following statistics and definitions are derived from the Storm Prediction Center (SPC) historical tornado archive. The Tornado History Project can not guarantee the accuracy of the underlying data within the SPC historical tornado archive. However, the data as presented here is guaranteed to match the SPC data, except where noted.

Some definitions will not be given since they are obvious (i.e. "Date", "Time", etc...)
Special Note: This site uses a unique index number to identify each tornado. This index number is not a part of the official historical tornado archive.

E (Error) (tornado search table only) - A yellow box indicates that the tornado record contains a suspected error. A red box indicates that the tornado record contains an error and has been modified from the official source. Hover over the box for the error text.
Map/Forum (tornado search table only) - Clickable icons for further content related to a tornado.
State - The state or states affected by a tornado.
Fujita - The Fujita scale is an attempt to classify damage from a tornado. F0 being the least damaging, F5 the most. For 2007 and beyond, the Enhanced Fujita (EF) is given.
Fat. - The number of fatalities attributed to the tornado.
Inj. - The number of injuries attributed to the tornado.
Width - Width in yards. It is unclear if this indicates a maximum width or mean width.
Length - Length of tornado path in miles. Note the entire track length is not necessarily all on the ground (some tornadoes "hop and skip".)
Damage - Prior to 1996, this is a range by dollar amount. For 1996 and later, actual damage estimates are in millions.
Crop Loss - Added in 2007. Given in millions of dollars.
Lat/Lon - Contains two sets of coordinates:

  • Touchdown Latitude/Longitude - For single state tornadoes, and the overall record for multi-state tornadoes, the approximate touchdown location in decimal degrees. For the state specific records of multi-state tornadoes, entry point into the state in decimal degrees.
  • Liftoff Latitude/Longitude - For single state tornadoes, and the overall record for multi-state tornadoes, the approximate liftoff location in decimal degrees. For the state specific records of multi-state tornadoes, the exit or lift-off point from the state in decimal degrees.

St. #. - The state tornado number assigned to the tornado for that specific state for that specific year. Generally, state tornado numbers were assigned in the order the tornado occurred, but that is not always the case.
SPC # - The tornado number as assigned by the SPC. Tornado numbers are not unique and reset each year. Generally, tornado numbers were assigned in the order the tornado occurred, but that is not always the case.

Date(s) (yyyy-mm-dd)TornadoesFatalitiesHighest FatalitiesInjuriesHighest InjuriesLongest PathWidest Path
1967-04-21 - 1967-04-2120 people0 people32 people32 people13.6 miles400 yards
User Comments   (2)      
General Comment
2015-06-15 19:08:48
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spvogelar
Posts:1
Rank: F0

I was 8 years old when this tornado touched down in Wyoming MI.  I lived on Taft and 36th St.  I remember the weather was hot, humid and still that evening, the sky was not yellow, but an unusual white and the rain pourd out of nowhere.  I went to the basement with my dad until the storm passed.  Next morning, I had to put on my winter coat to walk down the street, just south of 36th, to see the neighbor's garage destroyed.  Our shed had moved across the yard and I remember hearing that the gas station on Burlingame and 36th had been hit, the  school across Burlingame had been hit.  

General Comment
2017-03-25 17:44:20
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PatrickClancy
Posts:1
Rank: F0

I was 14 years of age when the tornado was identified in or near Wilson Ave. We heard the information on the Citizens Band radio about 6:45 to 7:00 pm on Friday evening. Our family was eating @ the Red Barn Chicken Restaurant when we heard the Alert. My dad took back roads to get to Clyde Park Avenue and headed southbound to try and make it to our grandparents home @ 48th and Division. However, when we were near Colrain And Clyde Park we spotted a white funnel cloud just by the Wyoming Water Tower in this area of Clyde Park. That would place the path about a half mile to the south of the path shown. I remember seeing that the Darling Freight Company at the NE corner of US 131 and 28th had received damage to one of their terminals. It then caused damage to KMart @ 28th and Buchanan Ave., SE, and then the Church at Alger and Madison SE. It took the roof off the center of the building. Those were the landmarks that we were able to check on a couple weeks after the storm.   

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