|Wind:||< 88 km/h|
|Vis:||> 400 m|
This is good weather. No travel restrictions apply.
High winds, low windchill or low visibility occurring or imminent. Travellers must check in with the firehouse prior to departure and again upon return. Recreational travel is prohibited.
|Wind:||> 100 km/h|
|Vis:||< 30 m|
Very high winds, very low windchill or very low visibility occurring or imminent. Travelling is prohibited, except for "mission critical" travel, with approval of the McMurdo Station brass.