I just wrote a @theactionnetwork.bsky.social letter: Reverse the Loss of ECCC Severe Weather Radar Science. Write one here: actionnetwork.org/letters/reve...
Reverse the Loss of ECCC Severe Weather Radar Science
Environment and Climate Change Canada (ECCC) recently disbanded its High Impact Weather Research section that included radar research. The radar research group was tasked with ensuring that our new $1...
actionnetwork.org
20 m/s effective shear supported elevated mesocyclones today. Interestingly, there were easterly wind gusts (56 km/h) with the storms that approached from the west.
Superimposed to a warm air advection regime at 850 hPa, a strong low-level jet transports subfreezing air into southern Ontario today.
Afternoon thunderstorms in north-west mid-level flow today across western Europe and Lake Huron, Ontario. Stretching possibly lead to increasing lapse rates in both situations; however, across Canada, the low-level air mass is too cold and stretching affects the air mass above the stable layer.
A mid-level trough axis crosses southern Ontario right now. Low-level stretching results in a well-mixed air mass and -30°C at 700 hPa. Some showers with gusts are possible even outside of snow squall paths.
The cold season progresses, but some brave Alberta storms formed despite strong vertical wind shear. CAPE in the right temperature zone and almost saturated air above the level of free convection helped.
Recipe for today's showers: Temperature -13°C / dewpoint -21°C, -36°C @ 700 hPa + one mid-level trough axis. Pretty chilly in London, ON.
