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  #1  
Old 08-03-2017, 01:14 AM
Mesocyclone97 Mesocyclone97 is offline
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Default Friday, August 4th Storm Potential

I've been watching models closely and it looks like we may have our first shot of an organized severe weather potential in this crappy year so far.

The NAM and GFS are both in agreement that a shortwave trough will traverse the great lakes, however differ slightly in terms of actual track. The NAM has the low progged to travel more North than does the GFS, this would give us a better warm sector and would be ideal.

NAM model soundings show decent CAPE for most of S ON although target regions seem to be Barrie area East to Kawartha Lakes/Peterborough region where the shear seems to be a bit better. Niagara region seems good too.

NAM 3k shows storm initiation just West of GTA area, growing into a squall-line in the Peterborough area.

Thoughts?
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  #2  
Old 08-03-2017, 02:58 PM
Stormydude Stormydude is offline
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Default Re: Friday, August 4th Storm Potential

No surprise that Eastern Ontario has the best shot for severe weather. It's been like that for the last few years from what I've observed.

These recent days have been nice for the slow moving pop up storms. Kitchener-Waterloo was hit pretty hard by flooding rain and small hail on Tuesday and parts of Cambridge may have been hit by a downburst yesterday along with flooding rain and small hail. Today is pretty much the same conditions for the 4th day in a row, and the storms are moving directly from the south too!
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  #3  
Old 08-03-2017, 06:28 PM
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DarkSky DarkSky is offline
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Default Re: Friday, August 4th Storm Potential

The last couple days here right around 4pm the storm cells have been building up - nice dark bases, towering updrafts. We've had rain and some thunder/lightning throughout the week but nothing spectacular.

I see a tornado warning was issued for some area yesterday. Not sure if anything came of it.
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Old 08-04-2017, 12:31 AM
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Skies Skies is offline
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Default Re: Friday, August 4th Storm Potential

Timing is key for me...when to leave work to get in place for some shots? 😃. And, do you try and chase around Barrie on the Friday of a long weekend? I have never chased in the Niagara area. Is that decent chase territory (i.e. Flat and open not so hilly and treed)?
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Old 08-04-2017, 01:18 AM
Stormydude Stormydude is offline
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Default Re: Friday, August 4th Storm Potential

Southern Niagara is pretty flat, but as soon as you get into the Northern Part, you hit the escarpment which is basically nothing but hills and trees, though it tends to get better storms. I would stay south of the escarpment if you want good chasing. The northeastern shore of Lake Erie will be best for spotting storms anyway because they'll be moving in from the south.
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  #6  
Old 08-04-2017, 11:20 AM
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DarkSky DarkSky is offline
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Default Re: Friday, August 4th Storm Potential

Quote:
Originally Posted by Skies View Post
Timing is key for me...when to leave work to get in place for some shots? 😃. And, do you try and chase around Barrie on the Friday of a long weekend? I have never chased in the Niagara area. Is that decent chase territory (i.e. Flat and open not so hilly and treed)?
As said above ^^, southern Niagara is pretty flat and also rural.

Northern Niagara (where I am) Is *TERRIBLE* for chasing. Hilly, lots of urban areas, congested roads.

Niagara in general is not good for chasing: you have Lake Ontario blocking you to the north, Lake Erie blocking you in the south, the Niagara River (and USA) blocking you to the east. If the storm is already *in* Niagara, then fine. But if you plan on actually chasing a moving storm, Niagara is probably the worst place a storm chaser wants to be.
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Old 08-04-2017, 02:43 PM
tice23 tice23 is offline
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Default Re: Friday, August 4th Storm Potential

Some nice cells over Collingwood and Elmvale area. Its small one, but intense and looks to have a some rotation in it. tonnes of lightning. should hit me in the next 30 minutes.
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Old 08-04-2017, 03:02 PM
tice23 tice23 is offline
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Default Re: Friday, August 4th Storm Potential

Tornado Watch up for a significant portion of Ontario now.
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  #9  
Old 08-04-2017, 05:26 PM
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Default Re: Friday, August 4th Storm Potential

Tornado warning:

Quote:
281
WFCN11 CWTO 041925
TORNADO WARNING
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 3:25 P.M. EDT FRIDAY 4 AUGUST 2017.
---------------------------------------------------------------------
TORNADO WARNING FOR:
=NEW= MIDLAND - COLDWATER - ORR LAKE.

TORNADO WARNING - REPLACES SEVERE THUNDERSTORM WARNING FOR:
MIDLAND - COLDWATER - ORR LAKE.

---------------------------------------------------------------------
==DISCUSSION==

UPDATED OR ENDED BY 4:24 P.M. EDT.

AT 3:25 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
SEVERE THUNDERSTORM THAT IS POSSIBLY PRODUCING A TORNADO. DAMAGING
WINDS, LARGE HAIL AND LOCALLY INTENSE RAINFALL ARE ALSO POSSIBLE.

DOPPLER RADAR INDICATES A POTENTIAL TORNADO APPROACHING FROM THE
WEST IN THE VICINITY OF MIDLAND. THE STORM IS MOVING EAST AT 60
KM/H.

TAKE COVER IMMEDIATELY, IF THREATENING WEATHER APPROACHES. 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.

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.

TORNADO WARNINGS ARE ISSUED WHEN IMMINENT OR OCCURRING THUNDERSTORMS
ARE LIKELY TO PRODUCE OR ARE PRODUCING TORNADOES.

THE OFFICE OF THE FIRE MARSHAL AND EMERGENCY MANAGEMENT RECOMMENDS
THAT YOU TAKE COVER IMMEDIATELY IF THREATENING WEATHER APPROACHES.

PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY
ENVIRONMENT CANADA. TO REPORT SEVERE WEATHER, SEND AN EMAIL TO
EC.CPIO-TEMPETES-OSPC-STORMS.EC(AT)CANADA.CA OR TWEET REPORTS USING
(HASH)ONSTORM.

FOR MORE INFORMATION:

HTTP://WWW.EMERGENCYMANAGEMENTONTARI...EPREPARED.HTML.

HTTP://WEATHER.GC.CA

END/OSPC
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  #10  
Old 08-04-2017, 05:27 PM
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DarkSky DarkSky is offline
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Default Re: Friday, August 4th Storm Potential

Port Carling / Port Severn tornado warning issued:
Quote:
130
WFCN11 CWTO 041929
TORNADO WARNING
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 3:29 P.M. EDT FRIDAY 4 AUGUST 2017.
---------------------------------------------------------------------
TORNADO WARNING FOR:
=NEW= PORT CARLING - PORT SEVERN.

TORNADO WARNING - REPLACES SEVERE THUNDERSTORM WARNING FOR:
PORT CARLING - PORT SEVERN.

---------------------------------------------------------------------
==DISCUSSION==

UPDATED OR ENDED BY 4:28 P.M. EDT.

AT 3:29 P.M. EDT, ENVIRONMENT CANADA METEOROLOGISTS ARE TRACKING A
SEVERE THUNDERSTORM THAT IS POSSIBLY PRODUCING A TORNADO. DAMAGING
WINDS, LARGE HAIL AND LOCALLY INTENSE RAINFALL ARE ALSO POSSIBLE.



THIS IS A DANGEROUS AND POTENTIALLY LIFE-THREATENING SITUATION. TAKE
COVER IMMEDIATELY, IF THREATENING WEATHER APPROACHES. 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.

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.

LIGHTNING KILLS AND INJURES CANADIANS EVERY YEAR. REMEMBER, WHEN
THUNDER ROARS, GO INDOORS(EXCLAMATION MARK)

TORNADO WARNINGS ARE ISSUED WHEN IMMINENT OR OCCURRING THUNDERSTORMS
ARE LIKELY TO PRODUCE OR ARE PRODUCING TORNADOES.

THE OFFICE OF THE FIRE MARSHAL AND EMERGENCY MANAGEMENT RECOMMENDS
THAT YOU TAKE COVER IMMEDIATELY IF THREATENING WEATHER APPROACHES.

PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY
ENVIRONMENT CANADA. TO REPORT SEVERE WEATHER, SEND AN EMAIL TO
EC.CPIO-TEMPETES-OSPC-STORMS.EC(AT)CANADA.CA OR TWEET REPORTS USING
(HASH)ONSTORM.

FOR MORE INFORMATION:

HTTP://WWW.EMERGENCYMANAGEMENTONTARI...EPREPARED.HTML.

HTTP://WEATHER.GC.CA

END/OSPC
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