Kyle Brittainさんのイラストまとめ

Following this convective trouble-maker, upper ridging reestablishes itself in western Canada next week bringing more heat and dry conditions, so the potential for both new fire starts and holdover fires will exist, especially across the southern interior. #bcfire #bcstorm

Lightning risk for the BC Interior this week...⚡️🔥

An upper low puttering around off Van Isle will support favourable conditions for thunderstorms (perhaps severe on Thursday) in the interior from Wed-Fri.

It could then cause problems across the prairies through the weekend.

Portrait of a monster.

This storm dropped grapefruit-sized hail that blew out the windows of many terrified motorists stuck on the side of Alberta's busiest freeway on Monday evening. #abstorm

A conditional threat of severe weather will develop across portions of south-central Alberta on Wednesday. #abstorm #yyc

My personal, technical discussion:

Sandwiched between low and height mid-level height anomalies lies a strong jet stream over the Alberta Rockies - a recurring pattern through month-end.

Given recent rainfall, moisture availability will be plentiful.

Could be seeing an active stretch of severe weather...

While it may not become a 2013 event, and that the drought relief will be excellent, it's still a LOT of rain.

Localized flooding (ponding and pooling in low lying areas, flooding along creeks) is still likely.

Get those downspouts pointed away from foundations! #yyc #abstorm

Heavy rain will bring flood risk along the foothills, but how does it compare to 2013 in Calgary?

Buffers:

- Low water table, slow mountain melt = below normal flows into reservoirs ahead of event
- Lower freezing levels, alpine snow
- >50% better flood resiliency in #yyc

Looks like we're in for some significant rain across much of the western prairies over the next few days!

In Calgary, now is a good time to ensure those gutters and storm drains are clear of debris, with downspouts pointed away from yours and your neighbours foundations #yyc

Could see some truck-tipping winds on Monday afternoon and early evening south of Calgary, especially on Hwy 2 between Nanton and Fort Macleod.

Gusts in excess of 110km/h possible. Travel with caution. #abstorm

@Skstormchaser Smartphone photography ftw!