A thread for weather extremes that don’t normally get reported

Dillonb3 wrote:

America starting to hit it's peak tornado season with an outbreak in the Dixie Alley area today

Any idea what size it was, sounds like it was substantial, maybe f3/4?

Wanderer78 wrote: »

Any idea what size it was, sounds like it was substantial, maybe f3/4?

Looks like a violent enough tornado. They should be doing the initial damage surveys this afternoon. One of the tornados struck James Spann's house while he was doing the weather coverage of it

Gaoth Laidir wrote: »

Vertical video again...

Ha yes, he may have been preoccupied though.

Freak late snowfalls in parts of Ontario, Canada. Toronto airport (CYYZ) measured 0.2 cm with a rainfall of 15 mm on 28th, daily max temp only 9 C. This snow is the latest measured snowfall in that location edging out May 26-27 1961 overnight.

The downtown location no longer specifies snow amounts and public video reports suggest trace amounts fell there. It would be the fifth latest trace of snow since reporting began in 1840. (only since 2017 has there been this absence of definite snow reports but I maintain a data base from indirect clues such as snow on ground and nearby reports). The latest traces of snow at the downtown location were 3 June 1859 and 1 June 1945, also late May traces in several years. The latest measurable snowfall at the downtown location remains 16 May (1884). The max of 11 C for the 28th and the min of 3 C are both near record values, and if it fell lower by morning of 29th (today) I will add the details. Due to the urban heat island that has developed since most cold records were set in the 1840-1890 period, daily record lows are unusual at Toronto downtown nowadays but one was set last year on 9th of May.

Most snow events in this region in May involve a cold rain that has snow mixing in occasionally, with a trend towards sticking snow on the higher ground west to northwest of the city. Elevations near Lake Ontario are only about 70-80 metres above sea level, but rise above 200 metres to the west of the Niagara Escarpment (the rock cliff that Niagara Falls cut into since the glacial era). There were video confirmed reports of 1-3 cm accumulations in the "highland" region northwest of Orangeville, ON specifically around Dundalk which is about 500 metres above sea level.

It had been a warmer than average May to the 27th (this will cut in) and at the airport the high on the 25th was 33.3 C, so the temperature fell from that point more or less continuously until the snow and 3-4 C readings arrived.

The snowfall was part of a larger rainfall event associated with low pressure tracking east-northeast through PA and NY states. It is therefore a somewhat similar event to the freak June 1816 inland New England snowfall from a coastal low. It also looked fairly similar to the reconstructed weather map for 3 June 1859 and some other late spring snow producers of the past.

Just west of Tours, a tornado ripped the bell tower off the church in Saint-Nicolas-de-Bourgeuil yesterday.
https://twitter.com/GuillDelanoue/status/1406254241065451523

Also damaged the community centre where voting was due to take place today, and associated hail ravaged local vineyards.

Tyrone212 wrote: »

Tornado in Auckland . 1 fatality.

https://www.google.com/amp/s/www.newshub.co.nz/home/new-zealand/2021/06/auckland-tornado-government-donating-100k-to-communities-damaged-by-papatoetoe-tornado.amp.html

Yea it was pretty rough here
https://www.stuff.co.nz/national/300338917/auckland-tornado-the-aftermath-in-pictures

Tornado in the Czech Republic.

https://twitter.com/MJimramovsky/status/1408131538148024334?s=19

https://twitter.com/Matesaaaci/status/1408137343463211011?s=20

Eastern Europe and Russia getting hot.

https://www.bnnbloomberg.ca/record-heatwaves-are-scorching-eastern-europe-and-siberia-1.1621708

Yep now the next target is the all-time record for BC which is 44.4 C set on July 16 and 17, 1941 at Lytton and Lillooet BC (really it was 112 F, the value of 44.4 is the standard conversion of that reading so it might have been 44.2 or 44.6 for all we know). The two locations had a week-long heat wave which is not that unusual in our climate but the temperature values were extreme. Heat waves further east in 1936 and 1937 produced similar readings in SK and MB provinces, several other instances of 112 F and one of 113 F on July 6, 1937 in southern SK, that being the recognized Canadian maximum and we could see that fall in BC today or Monday.

The 1936 heat wave (112 F south of Winnipeg MB) produced astounding heat in the U.S. plains states, with North Dakota managing a 122 F (50 C) reading. That heat spread to the east coast and most stations that have weather records from 1936 had their hottest temperatures during the spell July 8 to 15. Toronto hit 105 F on three consecutive days (8th-10th) and NYC hit 106 F on July 9th.

Overnight lows in the 80s F were common in those brutal 1930s heat waves and thousands of people perished from heat prostration in an era that was generally before air conditioning became widespread in homes.

Where I live is about three hundred miles east of the hot spots mentioned but there are other ones around the province that have a chance to hit similar values, one of which is quite close to my location (Warfield BC) -- it was about 101 F there today (Sat). Osoyoos in the Okanagan and Pemberton further west are other very hot locations.

In the nearby state of Washington, readings above 110 F are a little more common and began to appear on Saturday but I think for them the worst will come around Monday-Tuesday when the heat dome settles down over top of them (now it's over top of us).

Wow remarkable

Portland, Oregon breaking records

https://twitter.com/NWSPortland/status/1409303279872274434?s=20

https://twitter.com/NWSSeattle/status/1409320197584945161?s=20

https://twitter.com/NWSSeattle/status/1409321460196282369?s=20

You'll always get extremes anywhere on the globe at any given time at all times of year. Worth noting parts of north America are below or well below average temperature wise for the time of year as with the Arctic region.

I don't see anything extreme at all broadly. Just a small enough pocket of heat the through the pacific northwest but it will be gradually shifted in the next days to much cooler conditions closer the average for the region but still above by a few degrees for a while.



Current anomaly

Canada sets new national record as temperature reaches 47.5°C (117.5°F) in Lytton, British Columbia

Looks like we have a 47.8° @ THE DALLES MUNICIPAL AIRPORT, Oregon