NORTHERN CAIRNGORMS
AVALANCHE HAZARD 1500 HRS MON 4/1/99 
Storm conditions with heavy snow above 800m and strong S to 
SW winds led to rapid unstable windslab development on 
sheltered N to E aspects. Dry slab avalanche triggered on a steep 
NE-facing slope at 920m in Coire Laogh Mor. High (Category 
4) hazard of avalanche in these and similar locations. Some 
localised scouring noted on a few NW aspects.

AVALANCHE HAZARD OUTLOOK TUE 5/1/99
Further snow showers and moderating W winds overnight will 
lead to new slab development on sheltered NE to E-facing 
slopes and gullies above 1050m. For a time stability will be poor 
in these places but some marginal consolidation of the 
snowpack is expected later during daylight hours. Considerable 
(Category 3) localised hazard of avalanche in the early part of 
the period but gradually improving later.

CLIMBING CONDITIONS 

SNOW DISTRIBUTION: Heavy drifting on Mon. Significant 
improvement in overall cover in sheltered areas. Fresh, wet 
snow down to 650m.
ICING: Hard to say but likely to be obliterated by fresh snow. 
Cold enough to preserve previous build up.
COMMENT: Cairngorm stormbound on Monday.




LOCHABER
AVALANCHE HAZARD 1500 HRS MON 4/1/99 
Strong SW winds overnight and during Monday accompanied 
by heavy snow showers have deposited large amounts of 
windslab. This windslab is poorly bonded and shows poor 
stability. Greatest accumulations are present on N, NE and E 
aspects above 800m. In these locations the avalanche hazard is 
High (Category 4). 

AVALANCHE HAZARD OUTLOOK TUE 5/1/99
Large areas of unstable snow will continue to form as the strong 
showery SW-W airflow continues. Greatest accumulations will 
be present on N, NE and E slopes and gullies above 800m. 
Avalanches will occur in these locations. The avalanche hazard 
will be High (Category 4). Unstable cornices will also be present 
above these aspects.


CLIMBING CONDITIONS 

SNOW DISTRIBUTION: General cover above 650m.
ICING: Freezing level remaining at around 1100m.
COMMENT: Winds moderating on Tuesday. Large amounts of 
unstable snow in many gullies.



GLENCOE
AVALANCHE HAZARD 1500 HRS MON 4/1/99
Gales and heavy snow showers have deposited deep windslab 
on N-NE facing corrie headwalls and sheltered summit gullies 
above 700m. In these areas the snowpack is very unstable. The 
avalanche hazard is Considerable (Category 3).

AVALANCHE HAZARD OUTLOOK TUE 5/1/99
Heavy snow overnight will deposit further layers of unstable 
windslab in sheltered summit gullies and corrie headwalls 
facing N through to E above 700m. In these areas avalanches 
will occur. The avalanche hazard will be High (Category 4).

CLIMBING CONDITIONS 

SNOW DISTRIBUTION: Fresh snow above 450m.

ICING: Thawing ice above 700m.

COMMENT: Thick new snow cover above 700m.



SOUTHERN CAIRNGORMS
AVALANCHE HAZARD 1500 HRS MON 4/1/99 
Snow showers and gale force SW winds have led to continued 
windslab build up on N to E facing slopes and sheltered gullies. 
Although this snow is wet with some consolidation taking place, 
the snow is only moderately to weakly bonded above 900m. The 
avalanche hazard on these aspects remains Considerable 
(Category 3) especially high up on steeper slopes. 
AVALANCHE HAZARD OUTLOOK TUE 5/1/99
Further deposits of snow will develop on N through to SE 
slopes and sheltered gully areas above 900m overnight.  During 
Tuesday drier weather, abating winds and freezing levels around 
the summits some consolidation will take place. However, at the 
tops of steeper slopes stability will remain poor, where the 
avalanche hazard will remain Considerable (Category 3).  


CLIMBING CONDITIONS 

SNOW DISTRIBUTION: Fresh snow above 600m, with 
drifting in storm force winds.
ICING: Lean ice conditions buried under soft snow.
COMMENT: Calmer conditions with freezing levels around 
the tops.
 


CREAG MEAGAIDH
AVALANCHE HAZARD 1500 HRS MON 4/1/99 
Persistent snow on very strong Westerly winds has caused deep 
accumulations of heavy and very unstable windslab to form on 
NW through to SE aspects above 750m. Fresh debris from two 
separate avalanches noted on East facing slopes of Sron a 
Ghoire. The avalanche hazard is High (Category 4).

AVALANCHE HAZARD OUTLOOK TUE 5/1/99
Further heavy snow and very strong Westerly winds overnight, 
will continue to load the very unstable windslab accumulations 
found on NW through to SE aspects above 750m. Open slopes 
as well as gullies and hollows will be affected. The avalanche 
hazard will remain High (Category 4) with avalanches occurring 
on the above mentioned aspects.


CLIMBING CONDITIONS 

SNOW DISTRIBUTION: New snow falling down to 600m. 
Deep snow on the tops.

ICING: Most likely still there but difficult to tell in today's 
(4/1/99) atrocious conditions.
COMMENT: Giant cornices are evident above the cliffs in the 
Creag Meagaidh region.




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