Capabilities and limitations of the avalanche bulletin
general rule, the accuracy of both weather forecasting and the subsequent
prognosis of the avalanche danger can be compromised by inaccurate assessments.
Such is the nature of forecasting. The correlation that exists between the
regional danger level, possible avalanche activity and the relevant consequences
(and any action that needs to be taken) must be determined locally by the
individual user of the avalanche bulletin.
bulletin uses only general formulations. It is unable to assess local
conditions and certainly not individual slopes. For this reason, snow sport
participants and those responsible for safety must rely on their own procedures
when assessing the local situation. Such procedures include local weather, snow
and avalanche observations; snowpack analysis; examining maps; slope evaluation
in the field; and individual risk considerations. The safety services may also
have access to the results of artificial avalanche triggering. All the
available information should be taken into consideration before making a
decision. Particular attention is to be paid to information indicating unstable
avalanche bulletin reports only on conditions outside the areas protected by
the local railway and cableway safety services. It does not cover controlled
ski runs and pistes.
avalanche bulletin may describe slopes or parts of slopes where especially
critical conditions are to be expected. In view of the available data
resources, however, it is able to indicate only the regional avalanche
danger. Detailed information cannot be provided on small areas.
It is also
worth noting that the information density is highest for intermediate
and high altitudes, and lowest for the high Alpine regions. Remarks
concerning the high Alpine regions therefore demand special scrutiny.
weather situation is changing rapidly, it is impossible to describe the
emerging spatial and temporal variations in the avalanche danger accurately.
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