Jökull - 01.12.2006, Page 15

Avalanches in coastal towns in Iceland
Figure A2 and Table 4: Avalanche weather and paths in Patreksfjörður, S-Vestfirðir. – Yfirlit yfir snjóflóð,
rýmingarsvæði og snjóflóðaveður á Patreksfirði.
Evacuation zone Avalanche weather and wind directions for snowdrift
accumulation
Avalanche paths and notification
Snowdrift accumulation in winds from NW-NE-SE. Rain and melting
Vatneyrarsvæði Winds from NE-SE with intense snowfall and/or snow-
drift. Accumulation to the fetch in many wind directions,
especially from W. Afterwards the hazard can become
enormous in strong winds from NE-SE.
The starting zone is bowl shaped, surrounded by
cliffs. A very large fetch NE of the town. Evac-
uation levels 1-3.
Klif Most severe hazard in winds from N-NE from the moun-
tain edge or during intense snowfall. Erosion of snow
from the mountainside in most types of weather.
The edge is convex, with few gullies or cuts.
Evacuation level 3.
Stekkagil/ Geirseyrargil intense rain, melting. Snow accumulation in winds from
NE-E along the mountainside, and from the mountain top
in winds from N-NE.
The gully is deep, wider at the top, with debris
fan down slope. Slush flows. Part of the zone is
shared by Sigtúnssvæði. Evacuation level 2.
Sigtúnssvæði Snow accumulation in winds from NW-N from the moun-
tain top or intense snowfall. During winds from NE ero-
sion occurs from the mountainside (into Stekkagil).
The edge at the top of the hillside is convex, with
two shallow gullies. Slush flow and landslides
from Litladalsá. Part of the zone is shared by
the Stekkagil area. Evacuation level 2.
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