Posts Tagged: squall line

April 18th 2013

Surface analysis 18Z Thu Apr 18 2013

Surface analysis 18Z Thu Apr 18 2013

July 8th 2016

The first really active chase day of the year for Southern Ontario that was not a bust with widespread convection and severe weather ranging to hail to wind and even some local flooding. The entire day basically focus around an incoming low pressure system from Michigan with a trailing cold front that was crashing into very hot and humid air as a 500mb shortwave scooted past to the north.

After a quiet May and June, the storms were welcomed and helped to ease the drought conditions imparted across much of Southern Ontario thanks to a very dry and storm free spring and early summer.

Surface-analysis-21Z-Fri-Jul-8-2016

Surface analysis 21Z Fri Jul 8 2016

I started the chase day in Woodstock Ontario around 2PM as I focused on two possible targets eventually narrowing it down to the area around Goderich. As with every storm chase, looking at the surface observations and being in position early rather than late is always important and critical! Playing catchup or being unaware of the atmospheres potential is never a good thing and can really make or break a chase day.

Dashcam Video from Exeter with strong winds blasting in.

 

May 11th 2015

 

On this day a messy warm front which was severely stunted by the cold water of the great lakes struggled to make it into Southern Ontario. Shear profiles supported a linear squall line at best along a trof line and energy was very weak with peak cape around 800 j/kg.
May-11th-sfc-analysis

 

 

July 22nd 2001