May 26, 2020

Couple wet days coming especially in mountains. Beware near streams.

  • Vancouver Island Inland Sections Forecast - No watches or warnings in effect.

    Forecast Issued 05:00 AM PDT Tuesday 26 May 2020 - Tuesday: Clearing this morning. High 22. UV index 8 or very high. Tuesday night: A few clouds. Low plus 4. Wednesday: Sunny. Becoming a mix of sun and cloud near noon. High 25. UV index 8 or very high. Wednesday night: Cloudy. Low 12. Thursday: Increasing cloudiness. High 25. Thursday night: Cloudy. Low 13. Friday: Sunny. High 23. Friday night: Clear. Low 10. Saturday: Cloudy. High 22. Saturday night: Cloudy periods. Low 10. Sunday: Cloudy. High 17. Sunday night: Cloudy. Low 9. Monday: Cloudy. High 17.

I will be busy at the City all day tomorrow so wanted to get this out after the night model run and before tomorrow morning.

The UWash model is pretty firm that we will get precipitation starting between 5AM and 8AM tomorrow.  It will be moving fairly quickly as you can see by the series of images.

3AM-5AM

wa_pcp3.12.0000

By 8AM the rain has moved well onshore but totals in Port Alberni are only up to 1mm.

wa_pcp3.15.0000

The model actually has us in a rain shadow for the rest of Thursday and overnight.  There might be some wind in the evening too. It doesn’t have rain returning to most of the Alberni Valley until between 8AM-11AM on Friday.

wa_pcp3.42.0000-2

The total precipitation for the two days is only 8mm.  But notice in the chart below that the West Coast mountains are predicted to get between 32-64mm. (pink) between Thursday and Saturday mornings.

wa_pcp48.60.0000-2

This could lead to high streamflows in places like the Somass, Taylor and Kennedy and other rivers and streams between the Inland sections and West Coast of Vancouver Island.  Please be cautious if you are near any streams.

I will end the post there.  There is some pretty interesting weather being predicted for Saturday that at this point looks like it will mainly affect the I5 corridor and Lower Mainland but we’ll take a closer look at that on Friday.

Have a great Thursday!  The greens in the garden will love this rain.