The Met Office has upgraded its weather warning for snow across Co Armagh to amber for later this afternoon.
The warning comes into effect from 3pm regarding gut through until 8am tomorrow morning.
Already this morning heavy snowfall is causing chaos on the roads, with the A28 Gosford Road into Armagh particularly bad.
A ambulance spokesman said: “It is only 10.30am and already ambulance crews have attended 10 RTCs today. Weather is due to get worse so please listen to weather reports and PSNI advice and stay safe.”
There was a crash on the Killylea Road in Armagh around 7.30am, while the Babridge Road in Rathfriland has been closed due to a lorry becoming trapped on the road.
Many schools have closed and are likely to remain closed tomorrow given the inclement forecast.
A Met Office spokesperson said: “Heavy, squally showers of snow will continue through Tuesday and Tuesday night, with longer spells of snow for a time, especially on Tuesday evening.
“Over the hills, snow will drift in the strong to gale force winds. A gradual improvement is likely on Wednesday for most areas.
“Travel delays on roads are likely, as are public transport cancellations, and some vehicles may become stranded, more especially on higher routes.
“There is a chance of power cuts, while services such as mobile phone coverage may be affected.
“Some rural communities seem likely to become cut off.
“In addition roads and pavements will turn icy, increasing the chances of accidents or injuries.”
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