Author Archives: Mike R

Severe weather turns out big time!

With the early arrival of a weak cold front at around 9am I figured the chance of severe thunderstorms dissipated, it turns out the “cold front” was just a messenger. The real cold front turned up after supper and tore the CAP open leading to flash convection(some storms formed in a single 10min radar frame).

The first round of storms roared out of the foothills and make parts of the Leduc area look like winter, the same system moved east at a rapid pace making for a tough chase.

The 2nd round was by far the scariest, though I ended up missing it due to “core punch avoidance”. Had i gone after it I would have been cored near Ponoka as the storm passed over #2 and #2A, windshield preservation is top priority. I chose to use #21 to get south of it but at it’s fast pace I ended up using #56 and getting gas in Camrose. Most of the time i was dealing with heavy rain and heavy traffic from the big valley jamboree making for some of the worst driving conditions I’ve been through in a while.

Once on #56 I went for it, by now the supercell had long ago turned into a squall line that extended to Wetaskiwin(literally formed right on top of it) and speed up even more. I eventually ended up getting cored by the line near Edberg only getting very heavy rain. Once it had passed I made a few attempts to catch up and called it a night after the storm passed HWY 36. Meanwhile I was treated to quite the light show, the lightning was not only frequent but very bright and even when I got back to Wetaskiwin the lightning was still lighting up the sky from 100km away.

Slight risk of severe thunderstorms Sunday in Alberta

A slight risk of severe thunderstorms Sunday July 31. MLCAPE is only 750-1250 but with 30kt mid level and 60kt upper level shear isolated severe thunderstorms are likely with large hail and high winds. Any supercells will be the LP variety due to dews barely getting into the mid teens. The dry August air appears to be making an early appearance, as is the August heat. August is LP month for sure, and hopefully no more soupy green hail bombs this year.

On another note the setup last Monday became nocturnal with storms firing up all night along the QE2 between Olds and Leduc. Since then another 2 days saw thunderstorms once again including Non-severe storms along #13 on July 28 and severe cells around Calgary on the 29th that promoted tornado warnings. Even with CAPE values as low as 500j/kg the Shear was enough to keep the severe thunderstorms going

Severe weather possible Monday

Just a week after the exceptionally severe outbreak of July 18-20; severe thunderstorms are once again possible over much of central Alberta though the setup is not as epic as last week. 1500-2000 MLCAPE and shear is quite weak(30-40kt upper and less than 30kt in the mid levels). There should however be Severe pulse storms and a few longer lived cells with large hail, high winds, and heavy rain. Stay tuned for updates