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View Full Version : Jun.6 - F1 Leamington tornado upgraded to F2


DarkSky
06-09-2010, 11:29 AM
Initially it was thought that there had been 2 smaller tornados, but it turns out it was one larger one.


440
AWCN11 CWTO 090924
WEATHER SUMMARY FOR ALL OF SOUTHERN ONTARIO AND
THE NATIONAL CAPITAL REGION
ISSUED BY ENVIRONMENT CANADA TORONTO
AT 5:24 AM EDT WEDNESDAY 9 JUNE 2010.

SOUTHERN ONTARIO RECORDS THE FIRST TWO TORNADOES OF THE YEAR
-------------------------------------------------------------
==WEATHER EVENT DISCUSSION==

..F1 TORNADO EASTERN ONTARIO SATURDAY..
..F2 TORNADO SOUTHWESTERN ONTARIO EARLY SUNDAY..

A TORNADIC THUNDERSTORM TRACKED THROUGH ESSEX COUNTY EARLY SUNDAY
MORNING WITH EXTENSIVE DAMAGE TO PROPERTY AND AT THE TIME OF THIS
REPORT NO SERIOUS INJURIES. THE ENVIRONMENT CANADA STORM SURVEY
TEAM RECORDED HUNDREDS OF PROPERTIES DAMAGED ALONG A 40 KM PATH FROM
NEAR HARROW TO EAST OF LEAMINGTON AT THE LAKE ERIE SHORELINE. THIS
THUNDERSTORM PRODUCED A TORNADO WHICH CAUSED SIGNIFICANT DAMAGE IN
THREE AREAS ALONG ITS TRACK.

AT THE BEGINNING OF THE TRACK THE TORNADO MOVED SOUTHEAST OF HARROW
TOPPLING POWER POLES AND DAMAGING STRUCTURES. AT ONE LOCATION A TWO
STOREY BRICK HOME WAS SHIFTED ON ITS FOUNDATION..A BARN WAS
COMPLETELY DESTROYED AND LARGE DEBRIS WAS TOSSED SEVERAL HUNDRED
METRES. AS A RESULT OF THIS DAMAGE THE TORNADO HAS BEEN UPGRADED TO
A FUJITA SCALE RATING OF F2 WITH WIND SPEEDS RANGING FROM 180 TO 240
KM/H.

IN SOUTHERN SECTIONS OF LEAMINGTON THE TORNADO PRODUCED EXTENSIVE
FUJITA SCALE F1 (120 TO 170 KM/H) DAMAGE. IN ADDITION THERE WAS A 1
KM WIDE AND 5 KM LONG TRACK OF EXTENSIVE DAMAGE WHERE STRAIGHT LINE
DOWNBURST WINDS CAUSED STRUCTURAL DAMAGE DUE TO THE FALLING OF
MATURE TREES.

EAST OF LEAMINGTON THE STORM SURVEY TEAM RECORDED ADDITIONAL F1
TORNADO DAMAGE THAT CONTINUED EASTWARD TO THE LAKE ERIE SHORELINE.

SEVERE STORMS TRACKED EASTWARD NEAR THE VILLAGES OF DALKEITH AND
STE-ANNE-DE-PRESCOTT ON SATURDAY AFTERNOON AT 5PM. ENVIRONMENT CANADA
INVESTIGATORS DOCUMENTED EXTENSIVE DAMAGE TO BARNS..GRAIN BINS..CORN
SILOS..HOUSES AND MOBILE HOMES AS WELL AS COUNTLESS BROKEN AND
UPROOTED TREES. BROKEN POWER POLES RESULTED IN LOSS OF POWER FOR SOME
LOCATIONS. THE DAMAGE PATH WAS MEASURED TO BE JUST OVER 8 KM LONG AND
RANGED FROM 20 TO 30 METERS WIDE BEFORE APPEARING TO DISSIPATE AT THE
ONTARIO QUEBEC BORDER. INVESTIGATORS CONFIRMED THAT THE DAMAGE WAS
THE RESULT OF AN F1 TORNADO WITH ESTIMATED WIND SPEEDS OF 120 TO 170
KM/H.

PLEASE NOTE THAT THIS SUMMARY CONTAINS THE OBSERVATIONS AT
THE TIME OF BROADCAST AND DOES NOT CONSTITUTE AN OFFICIAL
AND FINAL REPORT OF THE WEATHER EVENTS OR THE HIGH
IMPACT EVENTS ATTRIBUTED TO THE WEATHER EVENTS.

END/OSPC

Derecho
06-09-2010, 01:51 PM
The F2 had a 40km path. Yikes!