The analysis of the day on Saturday is of great importance, the reasons There are many but two are most essential:
- baric configuration was truly monstrous and caused a sudden entrance of the wind,
- same day two years ago , underestimated (including myself) has caused serious problems to two pilots in the area of \u200b\u200bAndrate.
Come to order:
Huge Center depressionario planted in Northern Europe grows closer to the Alps, accompanied by fronts in quick succession.
Up to here nothing special. A conformation of that type is indicative of the arrival of air masses of high intensity and speed conditions aggravated by the foehn related to compression of the edges against the Alps.
The factor of surprise is rather in terms of zones in the lee of the Alps, totally invaded by the haze and air-way still, to intrusion of the wind.
Here is the most accurate monitoring of Saturday morning in the areas of Biella / canalside.
9.30: widespread dense fog. Almost motionless air everywhere.
analysis of papers and films from satellite, indicating that the front has traveled about 1000 km less of 10 hours and is now close to the Alps
10.30 am still thick mist and still air in Biella. Early signs of rising wind landing Cavallaria Coming SOUTH-EAST!
11.30 Andrate Basin: thick fog. Air virtually stopped. Landing Cavallaria wind stretched from Southeast punctuated by long pauses neutral.
12.30 am on the ridges under the Mombarone Andrate behind (practically Valle d'Aosta share input about 800/900) with the first indication of smoke that hint at wind coming from the Valley.
at 13:02 of the first volley in the valley entrance. Less than 10 minutes to fly Borgofranco garbage cans! In air still presence of "reassuring" mist gradually being pushed south by invading the foehn.
Why this "commentary" minute by minute? Because if he had not checked the weather sites, the simple analysis of the situation from takeoff up to 3 minutes before the irruption of the wind would provide results totally wrong and dangerous dramatically.
Fortunately, unlike years ago, today we have many tools that can help in situations like the one where it's really easy to make mistakes and the consequences can be severe.
Two years ago, just 5 March 2006, a day absolutely identical, both in terms baric that under the "visual" (dense fog in the area of \u200b\u200bAndrate), played a bad joke for a couple of friends. The error in this case was all. Superficially, based solely on assessments "from the take-off flew quietly for most of the afternoon remedying little more than quiet subdivision. Around 16 the intrusion of the wind with two pilots who are already depressed were able to land immediately and to other two that ended up tossed in the wind like dry leaves with ascending and descending a scale! The first, more experienced and understood the flight was the only chance of escape, turned and fled south to seek wider and more clear when he managed to land without hindrance. The second, lighter, with less experience, was tossed for over 20 minutes and pushed back for over 10 miles, with climbs punctuated by violent descent "from a free fall," finally managed to land unharmed near Ivrea.
still consider their bad experience as a personal mistake. A superficiality that could cost you. That is why today, I urge everyone not to underestimate the signs of the weather forecasts as they approach particular conformations. Indeed, they may prove essential to help avoid major risks.
This does not argue that weather forecasts are always hit, precisely because it is precisely because of forecasts and the reliability of many factors involved can sometimes be proven wrong by the facts. Approaching weather fronts which then dissolve or change course at the last moment allowing us to fly when the haunting first expected with rain water can be wrong. However, some conformations baric must certainly be the subject of careful analysis and display of caution.
I am attaching the cards discharged on Saturday about the outlook for the day, so that, if there are any doubts to be clarified we can discuss it.
Sunday, foehn phenomenon, decreasing in the afternoon because of removal to the east of the center depressionario.
Hello everyone.
