Sep 11, 2013

[Stormydude]

Surprised there isn't a thread about this day (today) yet. SPC has us under a slight risk, and there should be tons of humidity. I missed the huge storm in Kitchener on July 19, so I'll take any chance at a big storm.

[tice23]

I thought about it, but like yesterday it needs the perfect balance, I'm seeing a narrow window around 6-8pm that could yeild some potentially exciting storms across the region. high wind shear, low LCL levels and a decent MCape, plus the front, but only for a short window, My guess is if the storms do develop they will be quick to develop but may or may not last depending on how the cold front reacts, I think after 2-3h they might choke out again

It could happen earlier, but it needs a lot of energy to acheive free convection in the early afternoon

[WayfaringStranger]

Most of Southern and Eastern Ontario now under severe thunderstorm watch

Severe thunderstorms possible this afternoon and tonight.

This is an alert to the potential development of severe thunderstorms with large hail, damaging winds or heavy rainfall..Monitor weather conditions and listen for updated bulletins.

Warm and humid mid-summer conditions are in place over the regions and thunderstorms are expected to develop early this afternoon or this evening due to an approaching cold front. There is the potential for heavy downpours with these storms giving rainfall amounts in the 50 to 80 millimetre range in an hour or two. There is also the possibility of some locations receiving repeated thunderstorms and locally higher amounts. Severe thunderstorms this afternoon or tonight may also produce damaging winds in excess of 90 km/h and hail is also a possibility.

http://weather.gc.ca/warnings/index_e.html?prov=son

[Stormydude]

Marble size hail and a huge downpour pushed through Waterloo.

[tice23]

Those cells have warnings on them, impressive structure, 41,000ft tops

[benjaminblizzard]

Tornado warnings up for London-Middlesex, Cornwall - Morrisburg, and Brockville - Leed and Grenville.

[DarkSky]

496 
 WFCN11 CWTO 111915
 TORNADO WARNING
 FOR SOUTHERN ONTARIO
 ISSUED BY ENVIRONMENT CANADA
 AT 3:15 PM EDT WEDNESDAY 11 SEPTEMBER 2013.
 ---------------------------------------------------------------------
 TORNADO WARNING FOR:
 =NEW= OTTAWA SOUTH - RICHMOND - METCALFE
 =NEW= WINCHESTER - NEWINGTON
 =NEW= PRESCOTT AND RUSSELL.

TORNADO WARNING - UPGRADED FROM A SEVERE THUNDERSTORM WARNING FOR:
       OTTAWA SOUTH - RICHMOND - METCALFE
       WINCHESTER - NEWINGTON
       PRESCOTT AND RUSSELL.

---------------------------------------------------------------------
 ==DISCUSSION==
 UPDATED OR ENDED BY 3:50 PM EDT.

AT 3:10 PM EDT, METEOROLOGISTS ARE TRACKING A DANGEROUS THUNDERSTORM
 THAT IS LIKELY PRODUCING A TORNADO.

DOPPLER RADAR INDICATES STRONG ROTATION IN A COUPLE OF THUNDERSTORMS
 NEAR OSGOOD EASTWARD TO JUST SOUTH OF CASSLEMAN AND MOVING TO THE
 EAST AT 60 KM/H. THERE ARE ALSO A FEW OTHER DEVELOPING STRONG
 THUNDERSTORMS IN THE TORNADO WARNING AND MAY PRODUCE A TORNADO.

COMMUNITIES IN THE PATH INCLUDE: OSGOOD, EMBRUN.

THIS IS A DANGEROUS AND POTENTIALLY LIFE-THREATENING SITUATION.

EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER
 IMMEDIATELY, IF THREATENING WEATHER APPROACHES.

GO INDOORS TO A ROOM ON THE LOWEST FLOOR, AWAY FROM OUTSIDE WALLS
 AND WINDOWS, SUCH AS A BASEMENT, BATHROOM, STAIRWELL OR INTERIOR
 CLOSET. LEAVE MOBILE HOMES, VEHICLES, TENTS, TRAILERS AND OTHER
 TEMPORARY OR FREE-STANDING SHELTER, AND MOVE TO A STRONG BUILDING IF
 YOU CAN. AS A LAST RESORT, LIE IN A LOW SPOT AND PROTECT YOUR HEAD
 FROM FLYING DEBRIS.

IF YOU HEAR A ROARING SOUND OR SEE A FUNNEL CLOUD, SWIRLING DEBRIS
 NEAR THE GROUND, FLYING DEBRIS, OR ANY THREATENING WEATHER
 APPROACHING, TAKE SHELTER IMMEDIATELY.

FOR MORE INFORMATION:
 http://www.emergencymanagementontari...EPREPARED.HTML
 .

ENVIRONMENT CANADA CONTINUES TO MONITOR THE SITUATION CLOSELY. STAY
 TUNED TO YOUR LOCAL MEDIA OR WEATHERADIO FOR FURTHER UPDATES. IF YOU
 WOULD LIKE TO REPORT SEVERE WEATHER, YOU CAN SEND AN EMAIL TO
 STORM.ONTARIO(AT)EC.GC.CA.

END/SPC

839 
 WFCN11 CWTO 111943
 TORNADO WARNING
 FOR SOUTHERN ONTARIO
 UPDATED BY ENVIRONMENT CANADA
 AT 3:43 PM EDT WEDNESDAY 11 SEPTEMBER 2013.
 ---------------------------------------------------------------------
 TORNADO WARNING FOR:
 =NEW= CORNWALL - LANCASTER
       MAXVILLE - ALEXANDRIA
       WINCHESTER - NEWINGTON.

TORNADO WARNING ENDED FOR:
       PRESCOTT AND RUSSELL.

TORNADO WARNING - UPGRADED FROM A SEVERE THUNDERSTORM WARNING FOR:
       CORNWALL - LANCASTER.

---------------------------------------------------------------------
 ==DISCUSSION==
 UPDATED OR ENDED BY 4:20 PM EDT.

AT 3:40 PM EDT, METEOROLOGISTS ARE TRACKING DANGEROUS THUNDERSTORMS
 THAT MAY BE PRODUCING A TORNADO OR TWO.

DOPPLER RADAR INDICATES STRONG ROTATION IN A COUPLE OF THUNDERSTORMS
 NEAR HIGHWAY 43 AND MOVING TO THE EASTWARDS AT 60 KM/H. THERE ARE
 ALSO A FEW OTHER DEVELOPING STRONG THUNDERSTORMS IN THE TORNADO
 WARNING AND MAY BE CAPABLE OF PRODUCING A TORNADO.

THIS IS A DANGEROUS AND POTENTIALLY LIFE-THREATENING SITUATION.

EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER
 IMMEDIATELY, IF THREATENING WEATHER APPROACHES.

GO INDOORS TO A ROOM ON THE LOWEST FLOOR, AWAY FROM OUTSIDE WALLS
 AND WINDOWS, SUCH AS A BASEMENT, BATHROOM, STAIRWELL OR INTERIOR
 CLOSET. LEAVE MOBILE HOMES, VEHICLES, TENTS, TRAILERS AND OTHER
 TEMPORARY OR FREE-STANDING SHELTER, AND MOVE TO A STRONG BUILDING IF
 YOU CAN. AS A LAST RESORT, LIE IN A LOW SPOT AND PROTECT YOUR HEAD
 FROM FLYING DEBRIS.

IF YOU HEAR A ROARING SOUND OR SEE A FUNNEL CLOUD, SWIRLING DEBRIS
 NEAR THE GROUND, FLYING DEBRIS, OR ANY THREATENING WEATHER
 APPROACHING, TAKE SHELTER IMMEDIATELY.

FOR MORE INFORMATION:
 http://www.emergencymanagementontari...EPREPARED.HTML
 .

ENVIRONMENT CANADA CONTINUES TO MONITOR THE SITUATION CLOSELY. STAY
 TUNED TO YOUR LOCAL MEDIA OR WEATHERADIO FOR FURTHER UPDATES. IF YOU
 WOULD LIKE TO REPORT SEVERE WEATHER, YOU CAN SEND AN EMAIL TO
 STORM.ONTARIO(AT)EC.GC.CA.

END/SPC

875 
 WFCN11 CWTO 112020
 TORNADO WARNING
 FOR SOUTHERN ONTARIO
 UPDATED BY ENVIRONMENT CANADA
 AT 4:20 PM EDT WEDNESDAY 11 SEPTEMBER 2013.
 ---------------------------------------------------------------------
 TORNADO WARNING FOR:
 =NEW= MERRICKVILLE-WOLFORD - KEMPTVILLE
       MAXVILLE - ALEXANDRIA
       WINCHESTER - NEWINGTON
       CORNWALL - LANCASTER.

---------------------------------------------------------------------
 ==DISCUSSION==
 UPDATED OR ENDED BY 5:10 PM EDT.

AT 4:10 PM EDT, METEOROLOGISTS ARE TRACKING DANGEROUS THUNDERSTORMS
 THAT MAY BE PRODUCING A TORNADO OR TWO.

DOPPLER RADAR INDICATES STRONG ROTATION IN A COUPLE OF THUNDERSTORMS
 IN AN EAST TO WEST LINE OF THUNDERSTORMS ACROSS THE WARNING AREA.
 THERE ARE ALSO RAPIDLY DEVELOPING STORMS IN THE WARNING AREA AND THE
 POTENTIAL FOR TORNADO FORMATION WILL PERSIST OVER THE NEXT HOUR.

THIS IS A DANGEROUS AND POTENTIALLY LIFE-THREATENING SITUATION.

EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER
 IMMEDIATELY, IF THREATENING WEATHER APPROACHES.

GO INDOORS TO A ROOM ON THE LOWEST FLOOR, AWAY FROM OUTSIDE WALLS
 AND WINDOWS, SUCH AS A BASEMENT, BATHROOM, STAIRWELL OR INTERIOR
 CLOSET. LEAVE MOBILE HOMES, VEHICLES, TENTS, TRAILERS AND OTHER
 TEMPORARY OR FREE-STANDING SHELTER, AND MOVE TO A STRONG BUILDING IF
 YOU CAN. AS A LAST RESORT, LIE IN A LOW SPOT AND PROTECT YOUR HEAD
 FROM FLYING DEBRIS.

IF YOU HEAR A ROARING SOUND OR SEE A FUNNEL CLOUD, SWIRLING DEBRIS
 NEAR THE GROUND, FLYING DEBRIS, OR ANY THREATENING WEATHER
 APPROACHING, TAKE SHELTER IMMEDIATELY.

FOR MORE INFORMATION:
 http://www.emergencymanagementontari...EPREPARED.HTML
 .

ENVIRONMENT CANADA CONTINUES TO MONITOR THE SITUATION CLOSELY. STAY
 TUNED TO YOUR LOCAL MEDIA OR WEATHERADIO FOR FURTHER UPDATES. IF YOU
 WOULD LIKE TO REPORT SEVERE WEATHER, YOU CAN SEND AN EMAIL TO
 STORM.ONTARIO(AT)EC.GC.CA.

END/SPC

045 
 WFCN11 CWTO 112025
 TORNADO WARNING
 FOR SOUTHERN ONTARIO
 ISSUED BY ENVIRONMENT CANADA
 AT 4:25 PM EDT WEDNESDAY 11 SEPTEMBER 2013.
 ---------------------------------------------------------------------
 TORNADO WARNING FOR:
 =NEW= LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.

TORNADO WARNING - UPGRADED FROM A SEVERE THUNDERSTORM WARNING FOR:
       LONDON - PARKHILL - EASTERN MIDDLESEX COUNTY.

---------------------------------------------------------------------
 ==DISCUSSION==
 UPDATED OR ENDED BY 5:10 PM EDT.

AT 4:15 EDT, METEOROLOGISTS ARE TRACKING A DANGEROUS THUNDERSTORM
 THAT IS LIKELY PRODUCING A TORNADO.

DOPPLER RADAR INDICATES STRONG ROTATION ABOUT 20 KM NORTH OF LONDON
 AND IT IS MOVING EASTWARD AT 60 KM/H.

THIS IS A DANGEROUS AND POTENTIALLY LIFE-THREATENING SITUATION.

EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER
 IMMEDIATELY, IF THREATENING WEATHER APPROACHES.

GO INDOORS TO A ROOM ON THE LOWEST FLOOR, AWAY FROM OUTSIDE WALLS
 AND WINDOWS, SUCH AS A BASEMENT, BATHROOM, STAIRWELL OR INTERIOR
 CLOSET. LEAVE MOBILE HOMES, VEHICLES, TENTS, TRAILERS AND OTHER
 TEMPORARY OR FREE-STANDING SHELTER, AND MOVE TO A STRONG BUILDING IF
 YOU CAN. AS A LAST RESORT, LIE IN A LOW SPOT AND PROTECT YOUR HEAD
 FROM FLYING DEBRIS.

IF YOU HEAR A ROARING SOUND OR SEE A FUNNEL CLOUD, SWIRLING DEBRIS
 NEAR THE GROUND, FLYING DEBRIS, OR ANY THREATENING WEATHER
 APPROACHING, TAKE SHELTER IMMEDIATELY.

FOR MORE INFORMATION:
 http://www.emergencymanagementontari...EPREPARED.HTML
 .

ENVIRONMENT CANADA CONTINUES TO MONITOR THE SITUATION CLOSELY. STAY
 TUNED TO YOUR LOCAL MEDIA OR WEATHERADIO FOR FURTHER UPDATES. IF YOU
 WOULD LIKE TO REPORT SEVERE WEATHER, YOU CAN SEND AN EMAIL TO
 STORM.ONTARIO(AT)EC.GC.CA.

END/SPC

[Itchy]

Wait so it was the first cell I saw NW of London that got the Tornado Warning?

I was on the south side of that one. The motion were nuts on that one but the cell seemed messy in person. Was getting off work early had no camera, though I did manage to grab it in time for the second cell that swung through.

[nachos_666]

we had a tornado warning in london ontario. and I was just waiting for the bus, and took some wicked pics.
we saw a funnel cloud.. but then it vanished as fast as i went down. it hailed alot, and the wind was crazy.
I'm proud to have this picture1

[nachos_666]

trying to upload pics.. cant figure it out .. hmmmm