On Weather & Climate Through the Eyes of Mark Vogan
People living in Throckley, Newcastle upon Tyne, woke up this morning to find a blanket of snow - and there's more on the way (Photo from The Daily Mail)
Heavy snow unveils the official arrival of the Arctic to Great Britain
SECTIONS OF THE HIGHLANDS AND EASTERN SCOTLAND ALL BUT CRIPPLED AS SCHOOLS, ROADS SHUT AND GRAMPIAN POLICE TELL PEOPLE TO STAY OFF ROADS UNLESS THEY HAVE TO... AREAS OF YORKSHIRE, TYNESIDE AND DURHAM HAVE ALSO BEEN BADLY EFFECTED BY HEFTY SNOWFALL! SEE LINKS BELOW FOR THE DETAILS.
HIGHLIGHTS TO THE BREAKING NEWS
WORSE TO COME AS MARK VOGAN PREDICTS THE SNOW IS THE CURTAIN RAISER TO COLDER TEMPERATURES WHICH WILL ARRIVE AFTER THE SNOW BLANKETS ALL BUT COASTAL AREAS OF SCOTLAND!
Mark Vogan reports this morning along the wave-battered rocks just south of Turnburry, South Ayrshire overlooking Ailsa Craig and the North Channel...
Snow arrives as prolonged spell of cold weather starts
BBC Weather
Wintry weather to last for 10 days
The Daily Telegraph
The big freeze begins with most widespread November snowfall in 17 years... and there's more to come
The Daily Mail
IN OTHER NEWS
Lake Tahoe ski resort: Winter storm set modern-day record for snowfall in November
Sierra Sun
Today's Weather across America
From AccuWeather & The Weather Channel
Great Lakes Snow Ready to Rumble
AccuWeather
Weather Trouble Spots on 'Cyber Monday'
AccuWeather
Plains Thanksgiving Weekend Temperature Rebound
AccuWeather
Midwest Thanksgiving Flash Freeze Risk
AccuWeather
Weather Talk
By Mark Vogan
Lows in Montana and other areas over recent nights have neared an incredible 50 degrees below normal!
Over recent days highs in places have struggled to get above -10F and with winds blowing hard, this created -40 or lower windchills across many areas of Montana and the Rocky Mountain states. Lows dipped to between -20 and -27F and yesterday morning ended up being the coldest for all of the US this season so far. The lows falling into the 20s below zero are actually 40 to 50 below normal, quite incredible.
Whilst it's as cold as it was this morning in Salt Lake City, it's usually mightier colder up in the "sinks", just a shame there was not an official or even unofficial recording site to record real extremes!
This morning saw the core of coldest centered further south now that the trough has deepend over Wyoming, Utah, Nevada and California's Sierra with -10s and near -20s showing up with a few locales likely seeing lows fall towards -25 or -30F. Salt Lake City fell to 6 degrees but just north and roughly 6,000 feet within the Cache Valley of northern Utah lie a series of sink holes. These snow filled, relatively shallow crater-like basins act like a milk or soup bowl and collect the coldest air at the bottom of them. Around their basin or valley bottom lie no trees. It's a reverse tree-line due to the extreme cold that collects at the bottom of these sinks. Their known as Peter's Sink and Middle Sink and often see lows dip below -50F and likely way colder. I talk about this because the -20s may seem impressive and they are in high-elevation snowcovered valleys and basins of Wyoming, Colorado, Utah, Nevada and California, especially for the time of year, but these sinks don't see their capabilities in achieving extremely cold temps and temps MUCH lower than most places in the Lower 48 or even North America for that matter because there's no recording station within them. With a 6-degree low in Salt Lake City, it's highly likely these sinks saw sub -50 degree lows this morning and every winter, even when temps outwith these sinks may not see extreme lows every year, the topographic uniqueness makes these quite out of the ordinary for pooling of "extreme cold"....
60-degree temperature spread across Texas
Note from the map above at how it's 80 degrees in Brownsville whilst up in Amarillo it was 20 degrees. Areas in and around Amarillo likely were in the upper teens and factor in a slight breeze and windchill values likely were in single digits, quite a remarkable contrast to the tropical-like or perhaps desert-like 80 or even low 80s over the Rio Grande River Valley of extreme south Texas. Also note the very sharp thermal boundary between very warm, humid, tropical air and the dry, Arctic air!!! It's all in just one map today, folks!
Braemar, Aberdeenshire snowcovered and set to drop to -6C/21F tonight, sign of things to come!
More snow will fall tonight across areas already hit but clear skies will appear over areas of snowcover tonight and the favoured cold spot tonight will fall at Braemar, a favoured cold spot anyway... In coming nights when cold air deepens aloft, winds lighten up and skies are clear, the perfect set up will take place for perhaps a few spots within the Highlands and even Yorkshire which may quite well fall below -10C/14F, stay tuned, much more on the wintry UK onslaught tomorrow!
What's Reaching Today's Blogs?
Cold Thanksgiving, But Not a Lot of Snow to Go with It
Joe Lundburg, AccuWeather
The Extremes of the Day
Today's US Extremes
Courtesy of AccuWeather
High: 94 degrees at McAllen, TX
Low: -23 degrees at Big Piney, WY
Today's UK Extremes
Courtesy of the Met Office
High: 44 degrees (6.8C) at Isles of Scilly
Cold High: 30 degrees at Carterhouse
Low: 19 degrees (-7C) at Woodford (Greater Manchester)
Today's Extremes here at my house
High: 37 degrees
Low: 29 degrees
TODAY'S CONDITIONS
Frost failed to form overnight here due to a wind blowing and despite it being below freezing. Mixing air doesn't allow the dew to form and settle, therefore no scrapping despite it feeling cold. Normally a wind blowing would help lift temps well above freezing due to that mixing process but when it's Arctic air in place, wind doesn't warm in the normal way and therefore it remained cold and created a decently bitter morning. Other areas which saw less wind, i.e. Dumfries and Galloway where I drove through this morning, it was frosty but even down there, winds blew and it made it feel like -9C even at 10.30am in Stranraer.
Thanks for reading.
-Mark
No comments:
Post a Comment