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Rogers Pass

Important: This information is not intended for trip planning & we make no warranties about the quality or accuracy of this information. Snow-Reports.ca takes no responsibility for errors, omissions, or lapses in continuity. Use at your own risk. By using this information, you agree that you have read, understand and accept our terms of use.

Why doesn't this match the 24h forecast?

We're currently showing forecast weather and snowfall from two different Environment Canada (EC) models; one is the GEM 10km resolution forecast model, and the other is the HRDPS west 2.5km (high resolution) forecast model, which we use for the short term 24h forecast. Before these models start to run, EC needs to define the starting conditions for each cell in the model - this is more difficult with the higher resolution models since measurements aren't available in many (most) grid cells. As a result, the 24h grid may provide a indication of how the local trends vary more with terrain than the 10km grid because more topography can be taken into account, whereas in the 10km grid some of these dynamics are averaged.

In general, some weather patterns will result in very similar results between models, which can be interpreted with higher confidence; however, disagreement between the models may help provide an indication of uncertainty of the incoming weather pattern (e.g. snowfall amounts).

Avalanche Forecasts from Avalanche Canada RSS Feeds. Please be sure to check that forecast (time) is valid.


Avalanche Bulletin - Glacier National Park

Date Issued: Mon, 22 Aug 2016 21:31

Valid Until: Mon, 01 Jan 0001 00:00

Forecaster:

!_!

The snowpack is melted away except in the high alpine, and summer mountaineering season is here. Get up early and take advantage of an alpine start to make the most of a cold morning before the snow turns wet in the afternoons

Spring Conditions: Mon, 22 Aug

Information regarding summer mountain conditions can be found on the Mountain Conditions Report, published by the Association of Canadian Mountain Guides.

Summer Condition details.

Forecast Details

Avalanche Summary

During the second half of the summer, the high mountains have shed most of their winter snowpack. Following a summer snowstorm, windslabs can be expected during the immediate 24-48 hours following the storm.

Snowpack Summary

The summer snowpack exists in high alpine (above 3000m) and on glaciated areas, and consists mainly of well settled summer snow with the occasional dump of fresh snow and windslabs following a storm. Look for a solid overnight freeze for the best conditions, and avoid steep slopes when they're baking in the sun or soaked with rain.

Weather Forecast

http://weather.gc.ca/city/pages/bc-65_metric_e.html        http://weather.gc.ca/city/pages/bc-34_metric_e.html

Rogers Pass Forecast Atmospheric Sounding

Experimental Plots: Atmospheric Forecast at Elevation

The following plots are experimental, showing temperature profiles vs. elevation over time, as well as dew-point depression, which is the difference between the temperature and the dew-point at a given location in the atmosphere.

Help with this Plot

Why doesn't this match the 48h forecast?

We're currently showing forecast weather and snowfall from two different Environment Canada (EC) models; one is the GEM 10km resolution forecast model, and the other is the HRDPS west 2.5km (high resolution) forecast model. Before these models start to run, EC needs to define the starting conditions for each cell in the model - this is more difficult with the higher resolution models since measurements aren't available in many (most) grid cells. As a result, the 24h grid may provide a indication of how the local trends vary more with terrain than the 10km grid because more topography can be taken into account, whereas in the 10km grid some of these dynamics are averaged.

In general, some weather patterns will result in very similar results between models, which can be interpreted with higher confidence; however, disagreement between the models may help provide an indication of uncertainty of the incoming weather pattern (e.g. snowfall amounts).

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Important:
This information is not intended for trip planning & we make no warranties about the quality or accuracy of this information.  Snow-Reports.ca takes no responsibility for errors, omissions, or lapses in continuity. Use at your own risk.
 
Please visit avalanche.ca for the latest bulletins & Environment Canada for the latest weather.
 
The data contained on this page is not intended for use when trip planning or for making decisions in avalanche terrain. Although we try to make sure this is reasonably accurate, Snow-Reports.ca takes no responsibility for errors, omissions, or lapses in continuity. Due to the variability of mountain weather and terrain, actual weather conditions may differ significantly from forecast. Notably, this data covers 2.5km^2 (high res) and 10km^2 (low res) area. Averaging and differences in elevation may result in significantly different temperatures and significantly different precipitation amounts and/or phases.
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