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.
Guernsey footballer Alex Scott called up to England squad
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Guernsey's skin cancer rates higher than England
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Deputies approve Guernsey's budget, with amendments
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Thousands for Guernsey and Jersey schools to boost active travel
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Personal reasons prompt Guernsey Deputy’s departure from ESC
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New Aurigny aircraft flies into Alderney
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Guernsey's Victor Hugo Centre reaches fundraising milestone and unveils sculpture
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