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View Full Version : All Ontario Confirmed & Probable Tornadoes


Derecho
07-25-2010, 05:49 PM
...NEW UPDATE NOVEMBER 8 2012...

...PREVIOUSLY NOVEMBER 6 2012...
...PREVIOUSLY JANUARY 31 2012...


...ADDING TORNADO RELATED FATALITIES AND INJURIES*...
...2013 ADDED...
...2010/2011/2012 ADDED TO TOUCHDOWN POINTS LIST...
...4TH FORGOTTEN F0 TORNADO FROM JUNE 6 2010 ADDED TO 2010...


*If you have record of tornado related fatalities/injuries please pass it on to me to add to the chart. Information is scanty and few and far between. 2009 for example... definitive numbers are hard to come by. Some injuries/fatalities already tallied may be non-tornadic, but it's difficult to discern with older news reports.


...ALL CONFIRMED TORNADOES BY YEAR 1950 - PRESENT (NO RECORDS FOR 1955)...


<table border="1"><tbody><tr><th>- YEAR - </th> <th> CONFIRMED </th> <td valign="top">KILLED
</td><td valign="top">INJURED
</td><th> --- </th> <th> - YEAR - </th> <th> CONFIRMED </th> <td valign="top">KILLED
</td><td valign="top">INJURED
</td><th> --- </th> <th> - YEAR - </th> <th> CONFIRMED </th> <td valign="top">KILLED
</td><td valign="top">INJURED
</td><th> --- </th> <th> - YEAR - </th> <th> CONFIRMED </th><td valign="top">KILLED
</td><td valign="top">INJURED
</td> </tr> <tr> <th> 1950 </th> <th> 03 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1960 </th> <th> 06 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1970 </th> <th> 08 </th> <td valign="top">6
</td><td valign="top">200
</td><th> --- </th> <th> 1980 </th> <th> 24 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1951 </th> <th> 05 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1961 </th> <th> 05 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1971 </th> <th> 08 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1981 </th> <th> 16 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1952 </th> <th> 02 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1962 </th> <th> 05 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1972 </th> <th> 02 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1982 </th> <th> 13 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1953 </th> <th> 12 </th> <td valign="top">7
</td><td valign="top">40
</td><th> --- </th> <th> 1963 </th> <th> 02 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1973 </th> <th> 11 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1983 </th> <th> 07 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1954 </th> <th> 05 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1964 </th> <th> 02 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1974 </th> <th> 04 </th> <td valign="top">9
</td><td valign="top">20
</td><th> --- </th> <th> 1984 </th> <th> 16 </th><td valign="top">------ </td><td valign="top">30
</td> </tr> <tr> <th> 1955 </th> <th> NA </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1965 </th> <th> 06 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1975 </th> <th> 05 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1985 </th> <th> 19 </th><td valign="top">12
</td><td valign="top">291
</td> </tr> <tr> <th> 1956 </th> <th> 05 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1966 </th> <th> 10 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1976 </th> <th> 10 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1986 </th> <th> 05 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1957 </th> <th> 06 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1967 </th> <th> 08 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1977 </th> <th> 16 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1987 </th> <th> 01 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1958 </th> <th> 05 </th> <td valign="top">1
</td><td valign="top">------- </td><th> --- </th> <th> 1968 </th> <th> 22 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1978 </th> <th> 27 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1988 </th> <th> 05 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1959 </th> <th> 07 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1969 </th> <th> 16 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1979 </th> <th> 12 </th> <td valign="top">2 </td><td valign="top">150 </td><th> --- </th> <th> 1989 </th> <th> 05 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> --------- </th> <th> --------- </th> <td valign="top">------
</td><td valign="top">-------
</td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------
</td><td valign="top">-------
</td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------
</td><td valign="top">-------
</td><th> --- </th> <th> --------- </th> <th> --------- </th><td valign="top">------
</td><td valign="top">-------
</td> </tr> <tr> <th> - YEAR - </th> <th> CONFIRMED </th> <td valign="top">KILLED </td><td valign="top">INJURED </td><th> --- </th> <th> - YEAR - </th> <th> CONFIRMED </th> <td valign="top">KILLED </td><td valign="top">INJURED </td><th> --- </th> <th> - YEAR - </th> <th> CONFIRMED </th> <td valign="top">KILLED </td><td valign="top">INJURED </td><th> --- </th> <th> - DECADE - </th> <th> TOTAL </th><td valign="top">KILLED </td><td valign="top">INJURED </td> </tr> <tr> <th> 1990 </th> <th> 11 </th> <td valign="top">------ </td><td valign="top">6
</td><th> --- </th> <th> 2000 </th> <th> 14 </th> <td valign="top">------ </td><td valign="top">1
</td><th> --- </th> <th> 2010 </th> <th> 10
</th> <td valign="top">------ </td><td valign="top">15
</td><th> --- </th> <th> 1950 </th> <th> 45 </th><td valign="top">8 </td><td valign="top">40 </td> </tr> <tr> <th> 1991 </th> <th> 06 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2001 </th> <th> 13 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2011 </th> <th> 17 </th> <td valign="top">1
</td><td valign="top">37
</td><th> --- </th> <th> 1960 </th> <th> 82 </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1992 </th> <th> 10 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2002 </th> <th> 04 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2012 </th> <th> 10
</th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1970 </th> <th> 103 </th><td valign="top">17 </td><td valign="top">370 </td> </tr> <tr> <th> 1993 </th> <th> 07 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2003 </th> <th> 13 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2013 </th> <th> 11 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1980 </th> <th> 111 </th><td valign="top">12 </td><td valign="top">321</td> </tr> <tr> <th> 1994 </th> <th> 08 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2004 </th> <th> 14 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 1990 </th> <th> 97 </th><td valign="top">1 </td><td valign="top">18 </td> </tr> <tr> <th> 1995 </th> <th> 09 </th> <td valign="top">1
</td><td valign="top">------- </td><th> --- </th> <th> 2005 </th> <th> 12 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2000 </th> <th> 158 </th><td valign="top">4 </td><td valign="top">6+ </td> </tr> <tr> <th> 1996 </th> <th> 11 </th> <td valign="top">------ </td><td valign="top">9
</td><th> --- </th> <th> 2006 </th> <th> 31 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2010 </th> <th> 48 </th><td valign="top">1 </td><td valign="top">52 </td> </tr> <tr> <th> 1997 </th> <th> 08 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2007 </th> <th> 10 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> ---------</th> <th> ---------
</th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1998 </th> <th> 12 </th> <td valign="top">------ </td><td valign="top">3
</td><th> --- </th> <th> 2008 </th> <th> 13 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> --------- </th> <th> --------- </th><td valign="top">------ </td><td valign="top">------- </td> </tr> <tr> <th> 1999 </th> <th> 16 </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th> 2009 </th> <th> 34 </th> <td valign="top">4
</td><td valign="top">5+
</td><th> --- </th> <th> --------- </th> <th> --------- </th> <td valign="top">------ </td><td valign="top">------- </td><th> --- </th> <th>63 YR </th> <th>644</th><td valign="top">43 </td><td valign="top">807+ </td> </tr> </tbody></table>


...ALL SOUTHERN ONTARIO CONFIRMED AND PROBABLE TORNADO TOUCHDOWN POINTS BY COUNTY 1792 - 2012 (NO RECORDS FOR 1955)...

<table border="1"> <tbody><tr> <th> --- COUNTY --- </th> <th> - F0 - </th> <th> - F1 - </th> <th> - F2 - </th> <th> - F3 - </th> <th> - F4 - </th> <th> - F5 - </th> <th> - TOTAL - </th> </tr> <tr> <td>BRUCE</td> <td>13</td> <td>9</td> <td>6</td> <td>1</td> <td>-</td> <td>-</td> <td>29</td> </tr> <tr> <td>DUFFERIN</td> <td>6</td> <td>7</td> <td>5</td> <td>1</td> <td>-</td> <td>-</td> <td>19</td> </tr> <tr> <td>ELGIN</td> <td>4</td> <td>4</td> <td>5</td> <td>1</td> <td>-</td> <td>-</td> <td>14</td> </tr> <tr> <td>ESSEX</td> <td>30
</td> <td>24</td> <td>8
</td> <td>1</td> <td>1</td> <td>-</td> <td>64
</td> </tr> <tr> <td>FRONTENAC</td> <td>6</td> <td>1</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>8</td> </tr> <tr> <td>GREY</td> <td>12</td> <td>5</td> <td>7</td> <td>1</td> <td>-</td> <td>-</td> <td>25</td> </tr> <tr> <td>HALIBURTON</td> <td>5</td> <td>10</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>16</td> </tr> <tr> <td>HASTINGS</td> <td>7</td> <td>8</td> <td>4</td> <td>1</td> <td>-</td> <td>-</td> <td>20</td> </tr> <tr> <td>HURON</td> <td>10</td> <td>10</td> <td>7</td> <td>2
</td> <td>-</td> <td>-</td> <td>29</td> </tr> <tr> <td>LAMBTON</td> <td>16</td> <td>14</td> <td>10
</td> <td>3</td> <td>4</td> <td>-</td> <td>47</td> </tr> <tr> <td>LANARK</td> <td>4</td> <td>4</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>10</td> </tr> <tr> <td>LEEDS AND GRENVILLE</td> <td>8</td> <td>5
</td> <td>3</td> <td>-</td> <td>-</td> <td>-</td> <td>16</td> </tr> <tr> <td>LENNOX AND ADDINGTON</td> <td>4</td> <td>3</td> <td>2
</td> <td>-</td> <td>-</td> <td>-</td> <td>9
</td> </tr> <tr> <td>MIDDLESEX</td> <td>15</td> <td>11</td> <td>6</td> <td>1</td> <td>2</td> <td>-</td> <td>35</td> </tr> <tr> <td>NORTHUMBERLAND</td> <td>3</td> <td>1</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>6</td> </tr> <tr> <td>PERTH</td> <td>14</td> <td>13</td> <td>9</td> <td>2</td> <td>1</td> <td>-</td> <td>39</td> </tr> <tr> <td>PETERBOROUGH</td> <td>12</td> <td>2</td> <td>6</td> <td>-</td> <td>-</td> <td>-</td> <td>20</td> </tr> <tr> <td>PRESCOTT AND RUSSELL</td> <td>3
</td> <td>1</td> <td>1</td> <td>1</td> <td>-</td> <td>-</td> <td>6
</td> </tr> <tr> <td>RENFREW</td> <td>11</td> <td>7</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>20</td> </tr> <tr> <td>SIMCOE</td> <td>30
</td> <td>16</td> <td>8
</td> <td>-</td> <td>1</td> <td>-</td> <td>55</td> </tr> <tr> <td>STORMONT DUNDAS & GLENGARRY</td> <td>8
</td> <td>5
</td> <td>4</td> <td>-</td> <td>1</td> <td>-</td> <td>18</td> </tr> <tr> <td>WELLINGTON</td> <td>27</td> <td>10</td> <td>6</td> <td>1</td> <td>1</td> <td>-</td> <td>45</td> </tr> <tr> <th> --- DISTRICT --- </th> <th> - F0 - </th> <th> - F1 - </th> <th> - F2 - </th> <th> - F3 - </th> <th> - F4 - </th> <th> - F5 - </th> <th> - TOTAL - </th> </tr> <tr> <td>NIPISSING</td> <td>5</td> <td>3</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>8</td> </tr> <tr> <td>PARRY SOUND</td> <td>6</td> <td>4</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>11</td> </tr> <tr> <th> --- REGIONAL MUNICIPALITY --- </th> <th> - F0 - </th> <th> - F1 - </th> <th> - F2 - </th> <th> - F3 - </th> <th> - F4 - </th> <th> - F5 - </th> <th> - TOTAL - </th> </tr> <tr> <td>DURHAM</td> <td>6
</td> <td>5</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>13</td> </tr> <tr> <td>HALTON</td> <td>7</td> <td>3</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>12</td> </tr> <tr> <td>MUSKOKA</td> <td>5</td> <td>6</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>12</td> </tr> <tr> <td>NIAGARA</td> <td>16</td> <td>1</td> <td>5</td> <td>1</td> <td>-</td> <td>-</td> <td>23</td> </tr> <tr> <td>OXFORD</td> <td>10
</td> <td>5</td> <td>7</td> <td>2</td> <td>1</td> <td>-</td> <td>25</td> </tr> <tr> <td>PEEL</td> <td>9</td> <td>5</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>15</td> </tr> <tr> <td>WATERLOO</td> <td>8</td> <td>4
</td> <td>3</td> <td>1</td> <td>-</td> <td>-</td> <td>16</td> </tr> <tr> <td>YORK</td> <td>11</td> <td>11</td> <td>7</td> <td>-</td> <td>-</td> <td>-</td> <td>29</td> </tr> <tr> <th> --- SINGLE-TIER MUNICIPALITY --- </th> <th> - F0 - </th> <th> - F1 - </th> <th> - F2 - </th> <th> - F3 - </th> <th> - F4 - </th> <th> - F5 - </th> <th> - TOTAL - </th> </tr> <tr> <td>BRANT</td> <td>6</td> <td>2</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>9</td> </tr> <tr> <td>CHATHAM-KENT</td> <td>9</td> <td>18</td> <td>11</td> <td>2</td> <td>-</td> <td>-</td> <td>40</td> </tr> <tr> <td>HALDIMAND</td> <td>5
</td> <td>4</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>10
</td> </tr> <tr> <td>HAMILTON</td> <td>3</td> <td>2</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>7</td> </tr> <tr> <td>KAWARTHA LAKES</td> <td>10</td> <td>10</td> <td>3</td> <td>1</td> <td>-</td> <td>-</td> <td>24</td> </tr> <tr> <td>NORFOLK</td> <td>9</td> <td>3</td> <td>-</td> <td>1</td> <td>-</td> <td>-</td> <td>13</td> </tr> <tr> <td>OTTAWA</td> <td>10
</td> <td>5</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>17</td> </tr> <tr> <td>PRINCE EDWARD</td> <td>3
</td> <td>3</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>7
</td> </tr> <tr> <td>TORONTO</td> <td>13</td> <td>5</td> <td>5</td> <td>-</td> <td>-</td> <td>-</td> <td>23</td> </tr> <tr> <td> --- TOTAL --- </td> <td>399</td> <td>269</td> <td>160</td> <td>24</td> <td>12</td> <td>0</td> <td>864</td> </tr> </tbody></table>

...ALL NORTHERN ONTARIO CONFIRMED AND PROBABLE TORNADO TOUCHDOWN POINTS BY COUNTY 1792 - 2009 (NO RECORDS FOR 1955)...

<thbody></thbody><table border="1"> <tbody><tr> <th> --- DISTRICT --- </th><th> - F0 - </th><th> - F1 - </th><th> - F2 - </th><th> - F3 - </th><th> - F4 - </th><th> - F5 - </th><th> - TOTAL - </th></tr><tr> <td>ALGOMA</td> <td>6
</td> <td>2
</td> <td>1</td> <td>1</td> <td>-</td> <td>-</td> <td>10
</td> </tr><tr> <td>COCHRANE</td> <td>2</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>4</td> </tr><tr> <td>KENORA</td> <td>5
</td> <td>7
</td> <td>3</td> <td>-</td> <td>-</td> <td>-</td> <td>15
</td> </tr><tr> <td>MANITOULIN</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>0</td> </tr> <tr><td>RAINY RIVER</td> <td>-</td> <td>2</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>2</td> </tr><tr> <td>SUDBURY</td> <td>2</td> <td>1</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>4</td> </tr><tr> <td>THUNDER BAY</td> <td>3</td> <td>8
</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>12</td> </tr><tr> <td>TIMISKAMING</td> <td>4</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>-</td> <td>5</td> </tr><tr> <th> --- SINGLE-TIER MUNICIPALITY --- </th><th> - F0 - </th><th> - F1 - </th><th> - F2 - </th><th> - F3 - </th><th> - F4 - </th><th> - F5 - </th><th> - TOTAL - </th></tr><tr> <td>GREATER SUDBURY</td> <td>3</td> <td>-</td> <td>1</td> <td>-</td> <td>-</td> <td>-</td> <td>4</td> </tr><tr> <td> --- TOTAL --- </td> <td>26</td> <td>23
</td> <td>7</td> <td>1</td> <td>0</td> <td>0</td> <td>56
</td> </tr></tbody></table>

*All data supplied by Environment Canada. Discrepancies present in counts.

DarkSky
07-26-2010, 08:29 PM
EDIT: UPDATE (section below added Sep.8/2013)

Great statistical maps and data: http://www.yorku.ca/pat/research/dsi..._GLOMW2012.pdf (http://www.yorku.ca/pat/research/dsills/papers/GLOMW2012/Sills_GLOMW2012.pdf)

I've also got it hosted on the server here in case the link above changes:

http://www.ontariostorms.com/tornado_occurrence.pdf

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ORIGINAL REPLY:

54 for the Haldimand/Niagara area isn't bad I guess, considering it's the smallest area on the map. The 172 area has 3X the # of torandos, but it's 3X the size. Would be nice if EC could do equal-size area 'blocks' to show who gets the most according to unit-size of land.

I've got a small one here but it's too small to give any real detail :

http://www.ontariostorms.com/graphics/occurance.jpg

DarkSky
07-27-2010, 08:52 AM
There's also been lots of tornadoes EC never knows about. 3 here in Niagara in the last decade that I can recall. One on Hwy.20 in Fonthill where witnesses reported a funnel touching the ground, did extensive damage to a gas station out there. Another going up the Niagara Escarpment that did damage to a dozen or more cars, and ripped apart a construction site. Another that had the write-up on the front page of the newspaper where a professor from Brock U. surveyed the damage to grape crops at a winery stating he saw a distinct swath about 100m wide through it. There's probably been more...

So just remember, those are -confirmed- tornadoes, but EC doesn't go out and confirm everything (but that doesn't mean a tornado didn't occur). They just don't have the resources. Just judging from the # of tornadoes in this area in the last decade, to the # EC has confirmed, I'd go so far as to say the # of actual tornadoes is probably twice as high as the # of confirmed, in the last decade. And of course before that, without doppler, people shooting video, etc... that # is far far higher, especially the further you go back towards 1918.

Derecho
08-02-2011, 06:23 PM
Completely updated.
Northern Ontario added.

All confirmed and probable tornadoes 1792 to 2009 in Ontario.

I am also currently working on significant tornadoes and tornado outbreaks in the province of Ontario. All data supplied by Environment Canada.

Itchy
08-02-2011, 07:25 PM
I've seen a few unconfirmed around London as well over time

Derecho
08-02-2011, 07:38 PM
I've seen a few unconfirmed around London as well over time

Surprisingly, almost every year of the last 10 or so there have been and still are several tornadoes that were not publicly confirmed in statements or summaries. I've seen this in over and over in the data-set. Example April 25 2009 -- EC only publicly confirmed what two or three tornadoes? Yet I believe I saw six in the data including an F1 in Kitchener.

!!!

DarkSky
08-02-2011, 08:34 PM
Surprisingly, almost every year of the last 10 or so there have been and still are several tornadoes that were not publicly confirmed in statements or summaries. I've seen this in over and over in the data-set. Example April 25 2009 -- EC only publicly confirmed what two or three tornadoes? Yet I believe I saw six in the data including an F1 in Kitchener.

!!!

I think EC simply doesn't have the time to have some drive around looking at damage.

There's been a few here in Niagara too, some even confirmed by specialists (not EC), but since it's not EC it's not in their stats.
You have to remember that for every 1 confirmed tornado by EC, there's probably 2X as many unconfirmed that have been witnessed by people, and maybe 10X as many unconfirmed that occur where there's no people. One of the reason the US has so many 'more' tornadoes than Canada is they have 10X the population, smaller area, MUCH smaller unihabited areas, and more resources to witness and confirm.

EC's list of confirmed tornadoes might make up for about 1% of actual tornadoes occurring within the country. Heck, radar doesn't even reach most of the country so they have no idea what's going on there.

My point of all this being, recorded statistics in Canada compared to actual events, are night and day from each other.

davefootball123
08-02-2011, 08:49 PM
I bet there have been loads of unconfirmed/unwitnessed tornadoes in Ontario. Probably some this year too. I bet the 835 tornaodes in Ontario sicne 1792 isnt even half the amount.

Derecho
08-02-2011, 09:06 PM
I think EC simply doesn't have the time to have some drive around looking at damage.

EC's list of confirmed tornadoes might make up for about 1% of actual tornadoes occurring within the country. Heck, radar doesn't even reach most of the country so they have no idea what's going on there.

My point of all this being, recorded statistics in Canada compared to actual events, are night and day from each other.

Yeah, exactly. I cringe at our official annual averages of 11-14 tornadoes in Ontario per year about 60-100 tornadoes in Canada each year. Some years in Michigan and New York each state can experience 20 or more tornadoes confirmed off radar estimates in association with damage produced, etc. We don't have the funding or technology in Canada to confirm every single tornado, and really in over 200 years only about 30 tornadoes have been confirmed in Northern Ontario.

The annual averages should be heavily inflated across the board, example Ontario 30-50 and Canada 200-500 etc just to make up for the fact we can't detect or confirm all of them.

But, the list still stands, there are 885 tornadoes or so in the confirmed list 1792-2009 that I have. Considering 1918-2009 there were almost 800 tornadoes confirmed, that would dictate to about 1,700-2,000 actual tornadoes in the period from 1792-2009.

Anyway, what I was trying to say above is that EC is not releasing information statements for all the tornadoes they actually confirm. There must be 15-20 tornadoes in this data-set since 2001 where there was no public statement about their confirmation.

davefootball123
08-02-2011, 09:58 PM
I bet we see at least 20 tornadoes a year in Ontario probably more. 2009 with 30 confirmed tornadoes. I bet the actual total was close to 40 mabye more for that year.

Raedwulf
08-02-2011, 10:59 PM
Perhaps, perhaps not. Maybe there were 100 tornados. Unfortunately they are unconfirmed. Even if you witnessed it right in your back yard. It never got recorded..so anything over that is pure speculation based off a biased opinion.

Usually depends on the level of optimism of the individual. Someone optimistic may come up with an even higher number..which is why it doesn't count. It isn't recorded..you could speculate anything..

DarkSky
08-02-2011, 11:42 PM
And realistically, we don't NEED to spend money on unpopulated areas. If a big tornado goes through a forest on a hillside, 100miles away from the closest person, it doesn't really matter if it's known or not. We only need to invest money into tracking and knowing about tornadoes that affect us.

The US, with pretty much their entire country covered with settlements, needs a lot more coverage, so therefore are able to track pretty much their whole country on radar. And with 10X our population, they have the funds to do so. We could very well get 500-1000 tornadoes a year, but when only a small fraction of Canada is covered by radar, small fractions inhabited by people, there's no way we'll ever know a precise number.

.. and even if they do occur in an area covered by radar and is populated, EC still confirms less than half the tornadoes that occur. I remember an F0 went through Niagara on the Lake years ago, cutting a very visible 30-70m swath through the vineyards that a professor at Brock University commented on, and EC didn't even know about it.

So a much as posting stats on tornadoes are appreciated, they are only a minute fraction of what actually occurs. And if Canada records 100 tornadoes per year, over 100 years, that's 10,000 tornadoes. (of course 100/year is only a minute fraction of what actually occurs, but there's no way to ever discover all of them).

Derecho
08-02-2011, 11:47 PM
I remember an F0 went through Niagara on the Lake years ago, cutting a very visible 30-70m swath through the vineyards that a professor at Brock University commented on, and EC didn't even know about it.


Do you remember what date? Just out of curiosity.


So a much as posting stats on tornadoes are appreciated, they are only a minute fraction of what actually occurs.


It's just confirmed and probable tornadoes. Disclaimer: not the actual count, just the confirmed or probable count. lol

Smokin Joe
08-03-2011, 10:44 AM
I think that these stats are valuable, even if due to circumstances they are incomplete. In the US if a tornado passes through 3 counties I think they count it as 3 tornados.....I don't think that is good.

I jones for more info on tornados in ontario......I really think EC should invest some of that money in getting canadians access to free level 3 radar, and also re-designing the website so that the convective outlook is a stand alone link on the main menu among other things....but I'm getting off topic

Derecho
08-03-2011, 02:28 PM
I think that these stats are valuable, even if due to circumstances they are incomplete. In the US if a tornado passes through 3 counties I think they count it as 3 tornados.....I don't think that is good.

The NWS does not count a tornado as being two or more just because it crossed political boundaries. All goes by the touchdown point and the dissipation point.

And these stats are extremely important to understanding Ontario tornado history and heck this is probably the first time you all have seen a complete set of data for tornado records in Ontario. I spent three weeks putting this together. And who cares if 100% of tornadoes aren't being confirmed. It's the same in the US. They still miss a lot of tornadoes especially in much of the open country of the Plains from Montana SE to Arkansas. Radar coverage is terrible in that region, there is very little population, and it's mostly open fields. If no one see's the tornado touchdown, especially at night, it goes unnoticed. And that happens just as often in the US as it does in Ontario.

Environment Canada WFO Toronto does an amazing job confirming tornadoes in Ontario. They only just recently ramped up survey quality, especially in rural areas in central, eastern, and northern Ontario. Cut them some slack. Most other offices don't even bother with surveys.

Smokin Joe
08-03-2011, 03:39 PM
maybe i was reading this wrong but I thought the totals were inflated in the states from reading this from tornado faq's from NOAA:

"What are county-segments in NCDC tornado data? A county-segment is that portion of a tornado's path within a single county. If a tornado stays in one county, then a "tornado" is the same as a "segment." But this also means that tornadoes are counted twice when they cross into another county, three times when they enter a third county, and so forth. The reason for county-segment tornado recordkeeping is that the National Weather Service historically has verified tornado warnings by county. So when you look at NCDC tornado databases or the NWS Natural Hazard Statistics (based on Storm Data), you are not counting tornadoes, but instead county-segments of tornado tracks. This causes inflation of the tornado totals often reported by media and others who do not notice this important distinction." "

Derecho
08-03-2011, 05:49 PM
maybe i was reading this wrong but I thought the totals were inflated in the states from reading this from tornado faq's from NOAA:

"What are county-segments in NCDC tornado data? A county-segment is that portion of a tornado's path within a single county. If a tornado stays in one county, then a "tornado" is the same as a "segment." But this also means that tornadoes are counted twice when they cross into another county, three times when they enter a third county, and so forth. The reason for county-segment tornado recordkeeping is that the National Weather Service historically has verified tornado warnings by county. So when you look at NCDC tornado databases or the NWS Natural Hazard Statistics (based on Storm Data), you are not counting tornadoes, but instead county-segments of tornado tracks. This causes inflation of the tornado totals often reported by media and others who do not notice this important distinction." "

Oh that's for NCDC archives. They have drop down menus to select county data so if a tornado moved through three counties it appears three times, but includes a special note about being the same tornado that some must ignore.

NWS/SPC averages of 1300-1600 tornadoes a year are still correct and NWS confirmations are still correct. Just the NCDC does it differently.

DarkSky
08-04-2011, 02:13 AM
Do you remember what date? Just out of curiosity.

Pre-2000. Maybe around '98 or '99 ?? There was an article in the city paper about it.

Derecho
10-26-2011, 11:17 PM
These lists and maps can now only be used as general guidance as to what these numbers may look like. After a lengthy several month long investigation, several Environment Canada and National Weather Service data sources are not aligning. An extreme case has been uncovered in Hamilton where three different Environment Canada sources are confirming three different tallies for two segments panning 1979-2004 and 1984-2001 and also the original 1792-2009.

Derecho
01-31-2012, 04:14 AM
Updated first post.

Kjg
07-17-2012, 08:00 PM
Yeah was really hoping on something producing in the Niagara Region today!!! (even left work early today)

Derecho
11-06-2012, 02:30 PM
New update in the original post.

Derecho
11-08-2012, 11:56 PM
I have amended new information regarding tornado related casualties to the original post.