Greetings,

 

The low pressure system on the Ross Ice Shelf will continue to draw eastwards into Western Antarctica and decay over the next few days and progress to the NW. As the low decays, a weak high pressure system begins to develop on the northern half of the shelf. The weak high draws in moisture from the Ross Sea across the ice shelf. With stable conditions, weak winds, and high humidity, the setup is prone to lower cloud and fog development lingering for several days.

 

Monday: Expect overcast ceilings (less than 1000ft) to remain stagnant. Winds will be from the true NE to NW at 5-10 knots. Fog will persist throughout the day, restricting visibility from 1-3 miles, improving temporarily to 4-6 miles the middle of the day.

 

Tuesday: Low ceilings are likely to persist with a base of around 500ft. Visibility will likely be between 3-5 miles in fog, dropping in the evening as the temperatures decline slightly and the fog thickens, further restricting the visibility to less than a mile at times.  Winds will be light and variable.

 

Wednesday: Yet another day of low overcast ceilings and fog, though today the fog is likely to be thicker than yesterday, restricting visibility to ½ -3 miles. Occasional snow flurries will begin in the early morning and continue throughout the day. Winds will be from the NW at 3-8 knots.

 

Thank you,

 

Jenna Palmer