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2011 Pictures, videos, information on significant storms that have occurred in Ontario in 2011.

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Old 03-04-2011, 02:54 AM
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Default 2011 Thunderstorm & Tornado Statistics

THUNDERSTORMS (St. Catharines, ON stats) RED = Warning Issued, YELLOW = Watch Issued

Date / Time / Cell Tops / Description
--------------------------------------------------------------------------------
Apr.04 / 04:00 / 35,000ft / Moderate rain, light winds, nice CC lightning. Photos here.
Apr.20 / 00:10 / 40,000ft / Lightning brightly visible with no thunder while storm was still far away.
........................................Multiple cells passing through over a period of hours producing heavy rain, frequent very close lightning and loud thunder.
Apr.26 / 11:15 / 35,000ft / Light thunder, rain, wind. Thin squall line passed through quickly.
..............16:46 / 35,000ft / Light thunder, minimal lightning. Light rain.
May.18 / 19:50 / 30,000ft / Weak storm during continuous days of rain weather.
May.25 / 21:15 / 35,000ft / Large system, moderate thunder and lightning, moderate lengthy rainfall, light winds.
May.26 / 22:00 / 30,000ft / small cell producing light rain, little wind and thunder
May.30 / 22:00 / 50,000ft / intense lightning, no wind, heavy rain. Svr Tstorm watch. Lightning photos here.
Jun.04 / 10:40 / 45,000ft / gusty winds, moderate to heavy rain, frequent lightning
Jun.07 / 07:00 / ??,???ft / a few rumblings of thunder
Jun.08 / 02:05 / 60,000ft / monster storm but not in St. Catharines. Giant cells passed to the south. Distant lightning and rumbling thunder.
Jun.21 / 22:30 / 40,000ft / slow-moving t-storms over much of southern Ontario. Moderate rain, infrequent thunder and lightning.
Jun.23 / 01:26 / 30,000ft / weak storm part of a long line passing through.
..............03:00 / 35,000ft / part of a long line of storms but was had started to break up intensity as it passed over. Weak storm.
..............15:15 / 40,000ft / steady light rain, light rumbling of thunder
Jun.24 / 15:00 / 30,000ft / dark cloud base, moderate rain heavy at times, light thunder
Jul.02 / 22:00 / 40,000ft / Svr tstorm watch, frequent lightning, no rain, light wind, light thunder (cell passed by north of city over lake)
Jul.24 / 02:40 / 30:000ft / weak storm produced light rain, no wind, minimal thunder. First rain in weeks of drought and temps 30s.
Jul.31 / 05:30 / 30,000ft / small cluster of small cells passing by produced quite a bit of thunder and lightning, light wind, moderate but brief rain.
Aug.10 / 00:55 / 40,00ft / *intense* severe thunderstorm. Intense lightning, very loud 'canon' thunder, torrential rain with hail, near-horizontal wind. Very intense only for about 10mins, storm lasted about 25mins. NO WARNING issued, watch was issued hours before storm reached, but was mysteriously DROPPED an HOUR before the storm actually occurred.
Aug.18 / 17:10 / 35,000 / small yet visually impressive cell with good contrast between cumulus cloud and blue sky background. Rumbling thunder, light rain.
Aug.21 / 16:30 / 30,000 / light thunder, no visible lightning but heavy downpours, torrential downpours at times.
Aug.24-25 / 21:00 / 50,000 / Svr Tstorm warning & Tornado Warning: massively lightning show. Continuous strikes (CC + CG + anvil crawlers). Heavy rain with moderate winds, strong gusts. Long-lasting storm (21:00 Aug.24 to 0200 Aug.25). Lightning shots here. Summary here.
Sep.1 / 02:45 / 35,000 / Frequent CG lightning, heavy rain, minimal wind. Lightning shots here.
Sep.3 / 17:00 / 55,000 / Dark skies, moderate visible CG lightning, light wind, moderate brief rain. Storm was dissipating as it passed.
Sep.4 / 04:00 / 55,000 / Frequent lightning, light wind, light to moderate rain.
Sep.4 / 15:40 / 30,000 / Long, thin storm band passed through.
Sep.11 / 17:00 / 35,000 / small unorganized cells but very slow moving gave lots of thunder for quite some time.
Sep.22 / 19:00 / 35,000 / frequent lightning, light wind, torrential downpour of rain
Oct.19 / 03:20 / 30,000 / loud but infrequent thunder and lightning, no wind, light rain (part of a large rain system moving in)
Dec.15 / 15:00 / 25,000 / Light thunder, rain, light winds.

TORNADOES (in Ontario) - Confirmed:

Date / Time / Location / F-Rating / Description
--------------------------------------------------------------------------------
Apr.27 / 15:05 / Blandford-Blenheim (SW of Kitchener) / ONTARIO PROV. POLICE REPORTS POSSIBLE TORNADO WITH DEBRIS AND TREES DOWN
Apr.27 / 15:10 / Ayr (S of Kitchener) / POSSIBLE TORNADO (NO CONFIRMED DAMAGE)
Apr.27 / 15:30 / Fergus / F0 / no more info available
Jun.23 / ??:?? / Kanata area / F0 / occurred around the Ottawa river. More below.
Jul.16 / ??:?? / Goose Lake / F0
Jul.23 / ??:?? /
Lambton County / F2 / ENVIRONMENT CANADA HAS CONFIRMED AN F2 TORNADO TOUCHED DOWN IN LAMBTON COUNTY OF SOUTHWESTERN ONTARIO SATURDAY EVENING JULY 23RD 2011. THE DAMAGE TRACK IS ONE HALF KM WIDE AND 11 KM LONG EXTENDING FROM 7 TO 8 KM SOUTHEAST OF WYOMING ONTARIO TO 10 TO 12 KM SOUTH OF WATFORD ONTARIO. THE DAMAGE OBSERVED ALONG THIS PATH INCLUDED A BARN DESTROYED AND SEVERAL STEEL HYDRO TOWERS DOWN. THIS IS CONSISTENT WITH THE STRENGTH OF AN F2 TORNADO WITH WIND SPEEDS IN THE 180 TO 230 KM/H RANGE.
Aug.8 / 18:45 / Plattsville / F0 / ABOUT 18 KILOMETRES SOUTHWEST OF KITCHENER. THERE WAS NO DAMAGE REPORTED WITH THIS EVENT AND SO THIS TORNADO WAS RATED AS A FUJITA SCALE ZERO TORNADO (PEAK WINDS UP TO 110 KM/H).
Aug.16 / 16:15-17:45 / Dryden / F1 /(photos and video here) / IN AN AREA WEST AND NORTH OF DRYDEN, HAD AN APPROXIMATE LENGTH OF 24 KILOMETRES AND A MAXIMUM WIDTH OF 100 METRES. IT HAS NOW BEEN RATED AS A FUJITA SCALE ONE TORNADO (PEAK WINDS BETWEEN 120 AND 170 KM/H).
Aug.16 / afternoon / Lac Seul / F1 / NEAR LAC SEUL APPROXIMATELY 30 KILOMETRES NORTHWEST OF SIOUX LOOKOUT. THIS TORNADO WAS ALSO RATED AS A FUJITA SCALE ONE TORNADO AND HAD A LENGTH OF APPROXIMATELY 12 KILOMETRES AND A MAXIMUM WIDTH OF 400 METRES.
Aug.16 / unknown / Ear Falls - Wenesaga Lake / F1 / ABOUT 100 KILOMETRES NORTH OF DRYDEN. IT HAD A LENGTH OF 1 KILOMETRE AND A MAXIMUM WIDTH OF 300 METRES.
Aug.16 / unknown / Ear Falls - Gerry Lake / F1 / ABOUT 100 KILOMETRES NORTH OF DRYDEN WITH A LENGTH OF AROUND 2 KILOMETRES AND A MAXIMUM WIDTH OF 600 METRES. THE FUJITA SCALE RATINGS APPLIED WERE BASED SOLELY ON TREE DAMAGE. ANY OR ALL OF THESE TORNADOES, ESPECIALLY THE ONE TO THE WEST OF DRYDEN, MAY HAVE BEEN RATED HIGHER IF MORE SIGNIFICANT STRUCTURAL HAD BEEN FOUND.
Aug.21 / 13:00 / Gananoque / F1 / IMAGES AND EYEWITNESS ACCOUNTS ALONG WITH AN ENVIRONMENT CANADA ON-SITE DAMAGE SURVEY CONCLUDED THAT A FUJITA SCALE ONE TORNADO OCCURRED IN THE WESTERN PART OF GANANOQUE. TREE DAMAGE ALONG WITH DAMAGE TO A SHED RESULTED IN A FUJITA SCALE RATING OF ONE FOR THIS EVENT. THE TORNADO TRACK WAS APPROXIMATELY 1.5 KILOMETRES LONG WITH A MAXIMUM WIDTH OF 60 METRES.
Aug.21 / 16:00 / Goderich / F2-F3 / (photos and videos here) 1 killed, over 3 dozen injuried. Destroyed much of town square area in downtown block. Cars flipped, brick buildings destroyed. Official statement: WINDS ESTIMATED AT 280 KM/H. THE LENGTH OF THE TORNADO TRACK WAS APPROXIMATELY 20 KM, WITH A WIDTH THAT VARIED FROM ABOUT 500 M IN GODERICH TO LESS THAN 200 M FURTHER SOUTHEAST. THE SURVEY TEAM HAS REPORTED THE MOST EXTENSIVE DAMAGE IN DOWNTOWN GODERICH, INCLUDING STRUCTURAL DAMAGE TO BUILDINGS, ROOFS REMOVED, NUMEROUS VEHICLES OVERTURNED AND TREES DOWN. THERE IS ONE REPORTED FATALITY, AND A NUMBER OF PEOPLE WITH UNKNOWN INJURIES.
Aug.24 / 19:25 / Grey County / F0 / PRODUCED DAMAGE IN AN AREA APPROXIMATELY 10 KILOMETRES EAST OF NEUSTADT IN THE SOUTHWESTERN PART OF GREY COUNTY. ENVIRONMENT CANADA PERSONNEL COMPLETED A DAMAGE SURVEY IN THIS AREA ON TUESDAY AND FOUND A DAMAGE TRACK ABOUT 3 KILOMETRES LONG WITH A MAXIMUM WIDTH OF 200 METRES. THERE WAS SPORADIC TREE DAMAGE ALONG THIS PATH WITH SOME TREES UPROOTED AND OTHERS WITH LARGE BRANCHES SNAPPED OFF. IN ADDITION, A LARGE CHILDREN'S PLAY SET WAS KNOCKED OVER. THIS DAMAGE WAS CONSISTENT WITH A FUJITA SCALE ZERO TORNADO WITH PEAK WINDS UP TO 110 KM/H.
Aug.24 / 20:15 / Nairn / F1 / A DAMAGE SURVEY TEAM WAS OUT TODAY IN THE NAIRN AREA TO THE NORTHWEST OF LONDON INVESTIGATING A PATH OF STORM DAMAGE. THIS DAMAGE HAS BEEN CONFIRMED AS BEING CAUSED BY A FUJITA SCALE 1 TORNADO WITH PEAK WINDS BETWEEN 120 AND 170 KM/H WHICH OCCURRED AROUND 7:50 PM ON WEDNESDAY EVENING. DAMAGE INCLUDED THE DESTRUCTION OF A LARGE FARM SHED AND NUMERIOUS TREES. THE PATH OF DAMAGE WAS APPROXIMATELY 10 KM LONG AND 300 METRES WIDE, AT ITS WIDEST POINT. THE TORNADO BEGAN ABOUT 6 KILOMETRES WEST OF NAIRN AND ENDED ABOUT 4 KILOMETRES EAST OF NAIRN.
Aug.24 / 21:07 / GALT / F1 / (SE CAMBRIDGE) CONFIRMED F1 TORNADO AN ENVIRONMENT CANADA DAMAGE SURVEY TEAM HAS CONFIRMED THAT A FUJITA SCALE ONE (F1) TORNADO WITH PEAK WINDS BETWEEN 120 AND 170 KM/H OCCURRED WEDNESDAY EVENING IN AN AREA BETWEEN CABRIDGE AND BURLINGTON. THE TRACK WAS FOUND TO BEGIN NEAR LITTLE'S CORNERS AND END NEAR WESTOVER, WITH THE GREATEST DAMAGE IN KIRKWALL. THE TOTAL DAMAGE TRACK WAS APPROXIMATELY 15 KILOMETRES LONG AND MAXIMUM 300 METRES WIDE. THE DAMAGE RATING WAS BASED ON TREE DAMAGE NOTED ALONG THE DAMAGE TRACK.
6:56 PM LUCKNOW FUNNEL CLOUD, TREE DAMAGE
POSSIBLE TORNADO
Aug.24 / 22:12 / Central Middlesex / FUNNEL CLOUD TOUCHED DOWN AND COUNTY TORE ROOF OFF DRIVE SHED. POSSIBLE TORNADO.
Sep.2 / ??:?? / Murillo / F1 / near Thunder Bay
Sep.3 / 16:30 / W. of Grimsby / F0 / A POWERFUL THUNDERSTORM MOVED THROUGH THIS AREA AND CAUSED THE DESTRUCTION OF A GAZEBO AS WELL AS BRINGING DOWN A NUMBER OF LARGE TREE BRANCHES. THE LENGTH OF THE DAMAGE PATH WAS A LITTLE OVER 2 KILOMETRES WITH A MAXIMUM WIDTH OF AROUND 300 METRES.
Sep.12 / ??:?? / Missanabie near Wawa



False warnings (St. Catharines) :
---------------------------------------------------------------------------------
Apr.27 - severe thunderstorm warning: no thunderstorm at all. Light rain during cloudy skies.
Jun.04 - severe thunderstorm warning: moderately strong thunderstorm, not severe.
Aug.24 - tornado warning: no tornado

Missed warnings (St. Catharines) :
---------------------------------------
Aug.10 - severe thunderstorm (see listing under thunderstorms above)
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Last edited by DarkSky; 01-14-2012 at 02:42 PM.
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Old 06-24-2011, 05:00 PM
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Default Re: 2011 Thunderstorm & Tornado Statistics

I'll start posting more information in this thread below the first post. First post of this thread will be for summaries.

Jun.23 F0 in Kanata area confirmed :

Code:
907 
AWCN11 CWTO 241746
WEATHER SUMMARY FOR ALL OF SOUTHERN ONTARIO AND THE
NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA
AT 1:42 PM EDT FRIDAY 24 JUNE 2011.

-------------------------------------------------------------
==WEATHER EVENT DISCUSSION==

SECOND TORNADO OF THE SEASON CONFIRMED FROM JUNE 23 STORM.

A NUMBER OF INTENSE THUNDERSTORMS AFFECTED THE NATIONAL CAPITAL AREA
ON THE EVENING OF THURSDAY, JUNE 23. ONE THUNDERSTORM DEVELOPED
SOUTH OF KANATA, THEN MOVED OVER KANATA AND ACROSS THE OTTAWA RIVER
TO THE AYLMER AREA OF QUEBEC. SEVERAL INDEPENDENT PHOTOGRAPHS OR
VIDEOS OF A TORNADO WERE STUDIED BY ENVIRONMENT CANADA, AND IN
ADDITION A DAMAGE SURVEY TEAM INVESTIGATED THE SHIRLEY'S BAY AREA
THIS MORNING. WHILE NO DAMAGE WAS NOTED, THE PHOTOGRAPHIC EVIDENCE IS
SUFFICIENT TO JUSTIFY CALLING THIS THE SECOND TORNADO IN ONTARIO FOR
THIS SEASON. IT IS POSSIBLE THAT THE OBSERVED TORNADO OCCURRED OVER
THE OTTAWA RIVER. DUE TO A LACK OF OBSERVED DAMAGE, IT IS RATED AS A
FUJITA SCALE ZERO TORNADO WITH WINDS BETWEEN 60 AND 110 KILOMETRES
PER HOUR. THE FUJITA WIND DAMAGE SCALE GOES FROM ZERO (WEAKEST) TO 5
(STRONGEST). ONTARIO NORMALLY GETS AROUND 12 TORNADOES EACH SEASON.
THE SUMMER SEVERE WEATHER SEASON RUNS FROM LATE APRIL UNTIL EARLY
OCTOBER.

THIS STATEMENT WILL BE UPDATED IF NEW INFORMATION BECOMES AVAILABLE.

THIS WEATHER SUMMARY CONTAINS PRELIMINARY INFORMATION
AND MAY NOT CONSTITUTE AN OFFICIAL OR FINAL REPORT.

END/OSPC
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Old 08-25-2011, 06:28 PM
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Default Re: 2011 Thunderstorm & Tornado Statistics

Aug.24, 2011 summary:

Code:
 977 
 AWCN11 CWTO 252224
 WEATHER SUMMARY FOR ALL OF SOUTHERN ONTARIO AND THE
 NATIONAL CAPITAL REGION ISSUED BY ENVIRONMENT CANADA
 AT 6:24 PM EDT THURSDAY 25 AUGUST 2011.

-------------------------------------------------------------
 ==WEATHER EVENT DISCUSSION==

ENVIRONMENT CANADA CONFIRMS THE SIXTH TORNADO OF THE SEASON.

A LINE OF SEVERE THUNDERSTORMS AFFECTED MUCH OF SOUTHERN ONTARIO
 WEDNESDAY AFTERNOON AND WEDNESDAY NIGHT, ASSOCIATED WITH A SHARP
 COLD FRONT. CONDITIONS WERE FAVOURABLE FOR THE FORMATION OF
 TORNADOES, AND SEVERAL WALL CLOUDS AND FUNNEL CLOUDS WERE REPORTED.
 NO INJURIES OR FATALITIES HAVE BEEN REPORTED.

AN ENVIRONMENT CANADA DAMAGE SURVEY TEAM HAS CONFIRMED THAT A FUJITA
 SCALE ONE (F1) TORNADO WITH PEAK WINDS BETWEEN 120 AND 170 KM/H
 OCCURRED WEDNESDAY EVENING IN AN AREA BETWEEN CABRIDGE AND
 BURLINGTON. THE TRACK WAS FOUND TO BEGIN NEAR LITTLE'S CORNERS AND
 END NEAR WESTOVER, WITH THE GREATEST DAMAGE IN KIRKWALL. THE TOTAL
 DAMAGE TRACK WAS APPROXIMATELY 15 KILOMETRES LONG AND MAXIMUM 300
 METRES WIDE. THE DAMAGE RATING WAS BASED ON TREE DAMAGE NOTED ALONG
 THE DAMAGE TRACK. OTHER SPORADIC TREE DAMAGE WAS NOTED IN THE
 VICINITY OF THIS TRACK BUT IS BELIEVED THIS DAMAGE WAS DUE TO
 STRAIGHT LINE WINDS AND NOT A TORNADO.

ENVIRONMENT CANADA WILL CONTINUE TO INVESTIGATE THE NUMEROUS ACCOUNTS
 OF SEVERE WEATHER FROM ACROSS SOUTHWESTERN AND SOUTHCENTRAL ONTARIO
 THAT OCCURRED WEDNESDAY AFTERNOON AND EVENING. THIS SUMMARY WILL BE
 UPDATED AS NEW INFORMATION BECOMES AVAILABLE IN THE COMING DAYS.

FOLLOWING ARE SOME OF THE REPORTS RECEIVED BY ENVIRONMENT CANADA AS
 OF 6:00 PM EDT THURSDAY.
 -------------------------------------------------------------
 TIME(LCL)       LOCATION        EVENT DESCRIPTION

6:48 PM         POINT EDWARD    TOONIE TO PING PONG BALL SIZE HAIL
                 (NEAR SARNIA)

6:56 PM         LUCKNOW         FUNNEL CLOUD, TREE DAMAGE
                                 POSSIBLE TORNADO

7:22 PM         SOUTH OF DURHAM ESTIMATED 100 KM/H WIND GUST

7:25 PM         NEUSTADT        TREE DAMAGE

7:47 PM         KETTLE POINT    GOLF BALL TO TENNIS BALL SIZE HAIL
                 IPPERWASH
                 FOREST

7:50 PM         GRAND BEND      100 KM/H WIND GUST
                                 FUNNEL CLOUD, HAIL

7:55 PM         LUCAN           NICKEL SIZE HAIL

7:58 PM         DUNDALK         90-100 KM/H WIND GUST
                                 MARBLE SIZE HAIL

8:10 PM         FERGUS          100 KM/H WIND GUST (EST)
                                 MARBLE SIZE HAIL

8:15 PM         PARKHILL/NAIRN  TWISTED TREE DAMAGE
                                 POSSIBLE TORNADO

8:31 PM         GODERICH        GOLF BALL SIZE HAIL

8:33 PM         SARNIA          QUARTER SIZE HAIL

8:35 PM         PETROLIA        FUNNEL CLOUD

8:35 PM         CAMBRIDGE       100 KM/H WIND GUST, TREE DAMAGE

8:38 PM         SOUTH OF PETROLIA   MARBLE SIZE HAIL

8:42 PM         KETTLE POINT    GOLF BALL SIZE HAIL
                                 UPROOTED TREES

8:44 PM         LUCAN           50 MM RAIN IN 30 MINUTES

9:07 PM         GALT(SOUTHEAST CAMBRIDGE)  CONFIRMED F1 TORNADO

9:10 PM         KITCHENER       LOCAL FLOODING

9:20 PM         THEDFORD        GOLF BALL SIZE HAIL
                 (SOUTH OF GRAND BEND)

9:20 PM         FERGUS/GUELPH   FUNNEL CLOUD

9:27 PM         BURLINGTON      85 KM/H WIND GUST, TREE DAMAGE

9:31 PM         HAMILTON        100 KM/H WIND GUST
                                 SCATTERED DEBRIS

9:36 PM         LONDON          TREES DOWN

9:37 PM         FLAMBOROUGH     TREES DOWN

10:00 PM        RODNEY          QUARTER SIZE HAIL, HEAVY RAIN

10:00 PM        PORT WELLER     WIND GUST 78 KM/H

10:12 PM        CENTRAL MIDDLESEX   FUNNEL CLOUD TOUCHED DOWN AND
                 COUNTY              TORE ROOF OFF DRIVE SHED
                                     POSSIBLE TORNADO

10:12 PM        AILSA CRAIG     TREE WENT THROUGH A TENT
                 (NORTHWEST OF LONDON)

10:28 PM        NIAGARA         DIME SIZE HAIL, HIGH WINDS
                                 TORRENTIAL DOWNPOUR

11:00 PM        KITCHENER       33 MM RAIN IN 1 HOUR

11:35 PM        KINGSVILLE      POSSIBLE FUNNEL CLOUD

12:00 AM        PETAWAWA        64 MM OF RAIN FROM 7:00 PM

02:18 AM        LONG POINT      WIND GUST 97 KM/H

THIS WEATHER SUMMARY CONTAINS PRELIMINARY INFORMATION
 AND MAY NOT CONSTITUTE AN OFFICIAL OR FINAL REPORT.

END/OSPC
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