Snow/rain expected today/tonight across PEI..

Tuesday, November 20th 6:30am.. A developing low pressure system located just south of Long Island this morning will track NE passing along the coast of NS to be located near Halifax just after midnight tonight then in the Cabot Strait by tomorrow morning. Snow from this system will begin mid/late afternoon today and change over to rain across eastern half of the island then back to snow before ending near dawn tomorrow. A ridge of high pressure briefly builds in Wednesday evening with partial clearing then Another area of low pressure moves across the region on Thursday morning with more light snow. This system moves east later Thursday but very cold air for this time of year will invade the island. Ti scold air will be very unstable over the relative warmer waters of the Gulf setting the stage for snow squalls where these northerly winds blow on shore. This activity will taper off on Friday as the winds change direction and becomes more westerly. A large area of high pressure passes south of the region Saturday night which should give quiet weather to the island for the Friday-Monday Time frame. Watching a potential system on Tuesday.

Precipitation.. Snow begins mid/late afternoon changing to rain est of Charlottetown for a few hours then back to snow after midnight ending near dawn. West of Charlottetown will be less rain and more snow with all snow for Prince county. The bulk of the snow in a swath across eastern NB/ Moncton/west of Charlottetown where 15-20 cms possible by tomorrow morning. East of Charlottetown 10-15 cms lowering to 5 c,ms for eastern Kings. Thursday into Friday morning could see another 15 cms for eastern half of the island in the onshore snow squall activity. Dry for later Friday through Monday.

Temperatures.. Basically below normal for the entire period with the core of the cold air Thursday and Friday.

Wind.. Light northerly today increasing to brisk northerly tonight then shifting to light-brisk westerly tomorrow afternoon. Winds then shift back to brisk NW for Thursday and Friday. Light westerlies for Saturday and Sunday.

Hazards.. Accumulating snow later today through tomorrow morning especially for Queens and Prince counties.  Snow squalls expected for Queens and Kings on Thursday into Friday. Winds will be brisk at times giving local blowing and drifting snow. Visibility could be low at times due heavy flurries.

Watches/warnings.. Snow fall warning in effect for Queens and Prince counties.

Forecast..

  • Today.. Flurries.. Snow beginning mid afternoon, light north winds, highs 0/+2
  • Tonight.. Snow changing to rain across eastern half, brisk north winds, temps steady 0/+2
  • Tomorrow.. Snow/rain ending near dawn then partial clearing, light-brisk NW west winds, highs +2 early then falling to -3 by suppertime.
  • Thursday.. Snow, brisk NW winds, highs -6
  • Friday.. Flurries ending, brisk NW winds, highs -6
  • Saturday.. Sunny, light west winds, highs _3
  • Sunday.. Sunny, light west winds, highs +2
  • Monday.. Sun and cloud, light NW winds, highs +2

 

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