I didn't know the word Derecho until it became a severe weather warning on our radios yesterday. It made me point the car home.
A derecho (pronounced similar to "deh-REY-cho") is a widespread, long-lived straight-line wind storm that is associated with a band of rapidly moving severe showers or thunderstorms known as a mesoscale convective system.
High wind speeds, hurricanes and tornado-force winds are common in these storms. No wonder we got the big alerts yesterday. Most of the big derechos in the past have occurred in the U.S. Derechos can be hazardous to aviation due to embedded microbursts, downbursts, and downburst clusters. Generally "bursts" are a big part of the storms.
I guess we've been very lucky in Ontario in the past where our worst worries are too much snow and ice in the winter.
The storm yesterday was reported to have almost 1000 km of damage from Michigan to Quebec City.
There were 4 reported fatalities - mostly by trees falling. At one point the winds reached 132 km/h at the Kitchener airport. The worst derecho in history was in June 2012 where the winds reached 146 km/h and tracked across a large section of the Midwestern US into the mid-Atlantic states. There was $2.9 billion in damage and 22 deaths. It went on for more than a day. That storm is described in Wikipedia HERE.
May is supposed to be reserved for flowers - particularly the lilac festivals. We salute the arrival of summer on the Victoria long weekend with public and private fireworks.
Public Fireworks are back on this year. This Niagara Falls Summer Fireworks says: "Fireworks every night" - that's the headline. Summer has arrived! |