A period of rain and sleet is forecasted to turn to snow for a time tomorrow morning (21 November).
If it sticks, Jersey Met says 5mm of snow could be found in the upper parishes.
The alert calls for islanders to be cautious when out and about.
Temperatures are set to drop a couple degrees tomorrow too - with highs of 6 degrees expected.
The gov.je website forecasts it "feeling very cold", with strong F6 to F7 winds.
£22m Children's Services hub plans advancing
Guernsey's States will be asked to approve a new hub for Children's Services, costing up to £22 million.
Electricity companies sign four-year deal with EDF
Jersey and Guernsey Electricity have signed a new four year deal with French energy supplier EDF.
14 secondary Asian hornet nests found in Guernsey
Five separate Asian hornet nests have been traced and eliminated in the space of one week.
Gift to private schools could save Guernsey taxpayers £2.2m a year
Two Guernsey private school are being offered a gift that could save taxpayers £2.2m a year.
Beau Sejour closed after legionella detected
Beau Sejour has been closed after legionella bacteria was detected in the water system.
Scorecard for people in Guernsey to monitor their alcohol intake
Every household will get a scratchcard which will reveal whether their alcohol consumption is at the recommended safe level.
Plans to sell Guernsey rectory
St Martin's parish constables say repairs to the rectory building would be a financial burden on ratepayers.
Thousands of new species discovered in Guernsey’s freshwater habitats
Scientists say the results of Guernsey's first island-wide environmental DNA survey are "nothing short of incredible."
