On Weather & Climate Through the Eyes of Mark Vogan
SEE WEATHER TALK BELOW FOR VIDEO BLOG RECORDED FROM THE SCOTTISH HIGHLANDS AS WELL AS DISCUSSION ON THE VERY LOW TEMPERATURES RECORDED ACROSS SCOTLAND...
Image Courtesy of the LA Times
BREAKING NEWS STORIES
NEW UPDATE: Whilst Indio, California tops 113 degrees for the nations high, Downtown Los Angeles records a blistering 105-degree high whilst Chatsworth tops 107 and Riverside 110... it's expected to be even hotter Monday!
NEW UPDATE: Scotland's chill continues where cold air aloft is sinking to the ground under clear skies and light winds, allowing most inland places to drop to freezing or slightly lower... The low of 30 degrees here at my home in Lennoxtown is the coldest since that same low was recorded back on May 3rd. The national low was reported at Tyndrum, Strilingshire at a very crisp 24 degrees (-4.4C), Warmer air is in the process of moving in as well as a more unsettled regime the rest of this week.
L.A. fire danger is as extreme as the heat; Sunday, Monday even hotter
LA Times
Mudslides hit Venezuela
BBC Weather
Sudden storm kills six in Haiti
USA Today
Weakening Matthew drenches southern Mexico
USA Today
Today's Weather across America
From AccuWeather
Record-Challenging California Heat Continues into Early Next Week
By Brian Edwards, Meteorologist
Drought-Busting Rain Sliding Up the East Coast
By Katie Storbeck, Meteorologist
Midweek Outlook: Wet in the East, Hot in the West
By Brian Edwards, Meteorologist
Weather Talk
By Mark Vogan
My Video-Blog which was recorded just at 6.40am, just north of Dalwhinnie in the Central Highlands. When I recorded this video, the temperature was 26 degrees!
Heading southbound along the A9 just south of Dalwhinnie where Glen Truim meets the north end of Glen Garry, note the frost on the grass on the left side of the road, also the lack of trees and barreness of these hills surrounding which top 3,714 feet (Geal Charn which I believe is the first peak in the picture above on the right), there is also nearby Beinn Udlamain which reaches 3, 317 feet amonst many others. The picture above was taken about 3 to 5 miles north of Drumochter Pass, elevation 1,516 feet above sea level, the A9's highest point and often subject to severe winter weather conditions.
The chill across Scotland hits new lows... My House registers a winter-like 30 degrees (-1C) whilst I record 25 degrees (-3C) on my travels during the early morning hours!
TYNDRUM, STRILINGSHIRE, THE OFFICIAL COLD SPOT IN UK WITH 24 DEGREES (-4.4C)
During the lonely hours of the night whilst driving my truck load of Morrisons goods north to Inverness along the A9 from Bathgate, my truck was reading impressive numbers for September with temperatures as low as -3C or 25 to 27 degrees as I climbed in elevation through Glen Garry, south of Dalwhinnie around 3am, then on my way back south, I saw regular -3s around Dalwhinnie (Glen Truim) as well as down between Killiecrankie and Pitlochry, Perthshire (just south of Glen Garry) where pockets of fog lay in valley bottoms and steam hovered over both Rivers Garry and Tay as well as Loch Fiskally, tucked away in tree lines valleys where cold collects easily. Frost was well formed as well as well as puddles which had frozen up.. It was likely even colder than -3C or 25 degrees in spots under what was a beautiful morning of clear skies, a full moon and little in the way of wind, the perfect setup for maximum radiation cooling and within these sheltered, inland Glens.. temperatures can fall away to substantial levels. I expect somewhere this morning to have fallen all the way into the LOW 20s or the -4 to -6C range as the air mass overhead is very, very cold indeed and thus under clear skies and light winds, not only can heat at the surface and on the ground be released back to space but the cold air, held aloft, can sink down hillsides and into the Glens, allowing some mid-winter like cold to settle.
PERSISTENTLY AT -3C BETWEEN BRUAR AND PITLOCHRY
On my way northbound to Inverness, the thermometer crept to freezing, once north of Perth and where the climb into the central Highlands and Cairngorm National Park begins with the first 0C being registered around the tree-lined Dunkeld-Burnam area, just over 10 miles north of Perth and continued falling the 20 or so miles to Pitlochry and bottomed out around the Pass of Killiecrankie at -3C (around 26 degrees F) at around 3am. On the way back down from Inverness, this same area kept the -3C reading on the dashboard "persistently" for some time, this area which is surrounded by mountains, though less steep than further north through Glen Garry and towards the Pass of Drumnochter... the cold likely collects more efficiently in this area which is high and in a relatively "wide valley" in which less mixing of air can occur when cold air downslopes off the surrounding hills, collecting at the bottom. Too steep a hillside and valley, the more "mixing" of the air and less cold it can become at the valley bottom.
DALWHINNIE, A TRUE NATIONAL ICEBOX
In saying that, north of Drumnochter Pass and within the settlement of Dalwhinnie, this place over 1,1060 feet above sea level and is surrounded by gently slopped north-south hills which allow cold air to drain into Dalwhinnie and collect with m,inimal mixing, therefore allows Dalwhinnie to not only support some of the lowest temperatures of anywhere in the UK but the height and hills surrounding mean, it's also one of the coldest places by day as the cold air creates an inversion in which it can't escape, little sunlight reaches here in winter and thus both factors create the coldest daytime highs and well as night lows.
At my house, I was interested to see an even colder low this morning than yesterday, albeit slight and for a low of 30 degrees here for Sept 26, well that is impressive and nearly 2 months ahead of the first sub-freezing low last year which wasn't until well into November!
WINTER-LIKE CHILL TO LEAVE BY TOMORROW
Despite changes on the way as milder and more unsettled weather will return within the next 24 to 36 hours, tonight remains the same with clear, starry, moonlit skies, light winds and a substantial cooling trend through the south, central belt and north with lows that may rival last nights or even surpass those numbers recorded this morning in some sheltered Highland Glens...
This photo taken just north of Pitagowan and near the Bruar, Blair Atholl turnoff (Perth and Kinross), on the southern end of Glen Garry, near to where the "steaming" River Garry flows under the A9 shows well the clear skies and well formed frost on grassy surfaces (left of the road). This stetch saw a persistent reading of -3C on my truck dashboard at around 7.30 till 8am. In areas where fog had formed and trees where present, there was evidence of hoar frost formation! A thing often not seen until winter, not September!
What's Reaching Today's Blogs?
Devil's Lake Flooding Update
Jesse Ferrell, AccuWeather
Drought Relief For The Southeast
Frank Strait, AccuWeather
The Extremes of the Day
Today's US Extremes
Courtesy of AccuWeather
High: 113 degrees at Indio, CA
Low: 22 degrees at Bodie State Park, CA
Today's UK Extremes
Courtesy of the Met Office
High: 60 degrees at Hurn (Dorset)
Low: 24 degrees at Tyndrum (Stirlingshire)
Today's Extremes here at my house
High: 55 degrees
Low: 30 degrees (Frost)
Thanks for reading.
-Mark
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