52/102(*) Open Trails On Versant Sud/South And Versant Nord/North, At #Tremblant .
Please Note: Soleil And Edge Sectors Currently Off-line.
------------ 11:07 A.M. Insert Update: -----------------
48(*) REVISED Open Trails.
Archival Data Attached Below.
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Another Case Of...
Yesterday It Got Up To +11 C,
Now it’s -18 C,
The Laws Of Physics Apply.
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Unfortunately, along with the heat, there was a vicious wind
and rain, so the obvious consequence this morning is the
reduction of open trails and what will be very, very firm
base conditions with icy bits.
You know there’s big wind when the Summit ski racks
begin to blow over...
Over 180,000 Western Quebec residents are
without power this morning and many schools
are closed with the widespread high wind effects.
2.28.24.Summit.High.Wind.Velocity.Conditions.Observations.c.jpg
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Weather Notes:
- 2.29.24.Weather.Data.a.jpg (1.24 MiB) Viewed 184 times
Conditions Notes:
In The Groomed:
Complex, however...
If and where grooming was conducted at or after the
time that ambient air temps over elevations went below
Zero C, i.e., after the trail surfaces re-froze, there should
be good to very fine levels of quality within select zones.
To literally variable degrees, the temps dropped below
the freezing mark at around 8:00 P.M. last night and
the complex part could be where there was enough
thermal energy left in the surfaces over elevations, to
when the return to sub-zero could actually overcome
the heat, and all of this in relation to when any particular
surface was groomed.
Boiled down to essentials...
Tremblant Mountain Op’s are the masters of overnight
recovery, so the grooming default is smooth, everywhere, but...
Where grooming was over soft, it will now be firm with
icy overtones.
Where grooming was done later in the night-shift, over
where it was already re-froze, there could be good to
very fine loose, skiable top layers. All day durability will
be directly proportional to traffic flow volume.
There may be evolving natural hazards...
Additionally, there was glacial substrate flow over,
around and below topographical contours as a
consequence of localized rainfall zones where
moisture saturation just below the surface actually
caused sheet-like movement of large surface areas
to both occur and spread. As a case study, the little
pitch below the cross of Versant Nord/North Side
mid Fuddle-Duddle and Sissy Schuss, right at the
Windigo exit onto Fuddle-Duddle Bas/Lower, generated
an ice flow sheet of many square metres in the afternoon
after a morning of excellent high-traction action. Usually,
that change would be really, really obvious as a discoloured
soaked patch, and easily seen and navigated. In this case it
was actually under the surface that still looked deceptively
soft, but in reality was very shallow. There were accidents.
The point is that in conditions with such massive natural
forces acting(way, way outside of any possible human
intervention), both above and below the surface, you need
to explore cautiously, at all times, and you may not assume
that things will be the same this afternoon as they were
this morning.
In any evolving conditions like these, situational awareness
and pattern recognition around similar topographical features
are critical elements of safe navigation. Observe and anticipate.
In The Sous Bois/Hors Piste/Glades And Un-Groomed:
Closed For The Day...
and, for good and safe reason.
-------------- 12:37 P.M. Insert Update: -------------
2.29.24.Weather.Conditions.Observations.At.12.37.PM.a.jpg
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------------ 11:07 A.M. Insert Update: -----------------
48(*) REVISED Open Trails.
Archival Data Attached Below.
- 2.29.24.Trail.Status.Data.b.jpg (555.16 KiB) Viewed 163 times
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