Tuesday 18 October 2022

TO EVERYTHING THERE IS A SEASON

 “IT WAS ONE OF THOSE WILD, SHINING DAYS, WHEN THE VERY AIR SEEMED POLISHED, A DAY OF FAST MOVING SKIES, AND THE CLOUDS BLAZING, A DAY OF LEANING SPIRES.”

UNKNOWN








TO EVERYTHING THERE IS A SEASON



Summer: Soaring anvil clouds herald the approaching thunderstorms, precursors of lush growth, swollen rivers and rushing streams. Autumn brings forth its golden hues as the time for growth passes. Winter arrives with frosty mornings, tinder grass glistening white. Spring, warmer by the day, sees fields once burnt low flushing bright green, flowers and new leaves abound. Every season in the Drakensberg is special in its own way.


The Drakensberg lies close to the tropic of Capricorn and, in keeping with these latitudes, the climate is generally mild. From time to time, however, there are other factors that come into play, and they make for interesting and, occasionally, even severe weather conditions.




Although the warm Indian Ocean is almost 200km to the east of the Drakensberg it nevertheless plays an important part in the mountain range’s climate. From the coastline, travelling westward, the land rises steadily for about 100km. Here, it reaches an altitude of roughly 1500m and levels off to become an undulating inland plateau, dissected by a number of major rivers. To the south a number of foothill ridges protrude outwards from the mountains well into the midlands, and the topography is more extreme. In the west, presiding over it all lies the majestic Drakensberg Mountain range. More than 160km long, it rises abruptly to a height of 3 000m and more, creating a rugged barrier that affects the local weather in various ways. Be it thunderstorms or cold front, the result is often dramatic, intensifying the beauty and the extremes of nature.


For all but the winter months, the prevailing winds are from the north-east. Warm, humid air off the ocean, on its way inland, is forced higher and higher. When it reaches cooler altitudes, condensation takes place and clouds and thunderstorms form. Nowhere is this phenomenon more graphically displayed than along the Drakensberg escarpment in summer.




Every now and then the highs and lows of the pressure systems cause the wind to turn and blow strongly from the direction of the Antarctic, bringing with it colder weather.


Summer in the Drakensberg is warm, often hot. Mornings typically start with low-lying mist, especially in the valleys, but this soon burns off, absorbed by the heat of the sun. A breeze from the east brings with it more moisture, forming clouds above the peaks. By noon there is a fair chance that billowing cumulo-nimbus clouds, with their distinctive mushroom or anvil shapes, will form high above the mountains. Soon, thunder will reverberate among the peaks and lightning rake the sky. Huge raindrops will splatter the earth. Once on the move, the storm will make its way eastwards down the valleys………… often continuously reviving itself, until dissipating well out to sea, hundreds of kilometers away.


It’s a time of caution and respect for the power of nature! Walking in the mountains during an electrical storm, as spectacular as it can be, is not a good idea. In these mountains lightning has probably killed more people than all of nature’s other risks combined. One should be sure to keep well away from high ridges and not to take shelter under exposed trees. If a summer’s day trek is planned to be a long one, it is wise to get going early, even to start off well before sunrise. One has a good chance of beating both the heat of the day and the afternoon thunderstorm.




The sensations of experiencing a typical electrical storm: The rumble of the storm draws closer. The air, motionless at first, starts to bluster. It has an almost warm feeling about it. The sound of thunder becomes louder, lightning more threatening. The first drops fall. Intermittent at first, each audibly defined. Then the pace is increased, faster, louder, until the combination of thunder, wind and rain is a deafening cacophony. Suddenly the rain can be accompanied by hail. The air is charged and lightning strike the high ground all around as though you are in the middle of a war zone. In the face of nature’s onslaught, you are powerless.


Then, suddenly, as quickly as it arrived, the storm moves on. The sound of rushing water is everywhere. It spills down and off the cliffs to run through the grass, finding its way to the nearest gully. The sky becomes brighter. All around you the rocks and the landscape glistened, washed clean. Cloud, like steam, wrap the peaks, and obscure your view into the valleys below. The air is sweet with the smells of heather and grasses after their pounding by the elements. The rumblings diminish, moving away to the east. And towards the west it is dark and there is another storm forming. Soon, it will be heading your way…………




The region’s high summer rainfall can also create risk, with rivers beneath the peaks very quickly becoming swollen. If one is cut off while out hiking and there’s no alternative route, the sensible option is simply to wait for the flood to subside.


At this time of the year there is something special about the way that there is water everywhere, gurgling, and trickling in furrows and off the rocks beside the pathways. These small beginnings, from the tiniest trickle, gentle rivulet and stream, all eventually combine to form the raging torrents in the valleys below. Streams, often dormant during winter, become vibrant, with spectacular waterfalls appearing in unexpected places. Summer is also the time when wild flowers provide their colorful display and pleasant herby scents of woody fynbos and other sweet fragrances permeate the air.



We as hikers, explorers, and adventurers have the absolute duty to respect and protect our Wildernesses. Nobody else will do it for us. Take ownership!


The End.


Safe Hiking.















References and Acknowledgements

From the book – “Best Walks of the Drakensberg” – David Bristow

Photos:  ©W Pelser

Compiled by:  Willem Pelser







Tuesday 11 October 2022

HIKING THE WILDERNESS - LIGHTNING

“I SOLO HIKE THE WILDERNESS, NOT TO ESCAPE LIFE, BUT FOR LIFE NOT TO ESCAPE ME”


UNKNOWN












HIKING THE WILDERNESS

LIGHTNING


Of all the hazards that can best you in the wilderness, it is certain that being struck by lightning is one of the most terrifying. That bolt from the blue can zap you without warning, melting your boots to your feet and reducing you to a smoking heap. And it’s so hard to get away from, too – especially if you are high up or in the forest. Well, that does not have to be the case. One of the reasons why you should take an interest in the weather around you is so that you can avoid being on that knife-edge ridge in a thunderstorm.




Warning signs
   Your best source of information for thunderstorms and the menace of lightning is the weather forecast. And if storms are predicted for your area, amend your plans – it’s better to spend a few hours in the outdoor shops. If you do get caught out, there are a few steps you can take to avoid becoming toast.

   If you hear thunder or see lightning, don’t hang around for the rain to come, get to safety as quickly as you can. If you can hear the rumble of thunder the storm is probably only 10-16km away. You can see lightning a lot further off, usually up to 24km away, but in the hills your visibility and the sound of the thunder may be obscured and deflected by valleys and ridges. When you see the flash start counting. Stop when you hear the bang. Divide your result by 3 for a metric answer and by 5 for a distance in miles. If your result is between 5 and 8km, you are in the usual strike zone for lightning, and therefore most at risk.


Protect and survive
   The best places to shelter from the rain are often the worst places to avoid lightning. Tall trees are natural lightning conductors, but caves and overhangs too will conduct electricity around you and your body will act as a conducting core.

   If you are in a forest, see if you can find a patch of younger trees. If you’re on rocky terrain, see if you can find a boulder. Sit on your rucksack with your head down and your hands on your knees. You don’t need to throw out all your metal ware – lightning has bigger fish to fry than being drawn by your ice axe, walking poles, camera or crampons – but it may be sensible to lay them to one side. The middle of a well-drained slope is probably the best place to be.





Clouds
   If you take a little time to learn which clouds are associated with the different types of approaching weather you can impress your friends with forecasting prowess in the wilderness. If you only learn to identify two – learn cirrus, the high level, wispy clouds that precede a warm front and follow a cold one, and cumulonimbus, the angry thunderclouds which foretell severe weather.


Wind chill
   However cold the air temperature actually is, you will feel colder if there is also a wind blowing. Wind chill is the dramatic factor loved by news reporters because it sounds so dramatic: ‘Although the air temperature was just above freezing, wind chill on the remote farm saw temperatures plummet to -10! There can be no doubt that the wind chill is a killer – it’s a measure of how your body reacts to the conditions of cold air being blown against it. Freezing air will cause you more harm faster if it hits you at 50kmh! If the ambient temperature is -5 degree Celsius and there is a 20kmh wind blowing, the temperature will feel to you as if it is more like -12 degrees Celsius.





How does this affect the Wilderness hiker?
   You have to be prepared for the conditions you’ll find in the wilderness. It’s not just the case of checking to see if it’s going to rain. High winds can make ridge walking very dangerous. Snowfall can occur even in summer at altitude, rain will swell watercourses making route changes necessary, and poor visibility will slow you down, even if your navigation is Exocet-like.

   The moral is, keep your eye on the weather reports before you go. Get accurate forecasts, and understand how they will affect you on the ground in the Wilderness and Mountains.


We as hikers, explorers, and adventurers have the absolute duty to respect and protect our Wildernesses. Nobody else will do it for us. Take ownership!

 

 

The End.

 

Safe Hiking.





References and Acknowledgements

From the book – The Ultimate Hiking Skills Manual – Hinkes/Bagshaw

Photos: Willem Pelser
Compiled by Willem Pelser