Tue. Aug 21st, 2018

Update Sat 4PM – Flood Warning downgraded to Watch – Flooding Rain Possible Monday after Sunday dry-out.

  • Vancouver Island Inland Sections Forecast - SPECIAL AIR QUALITY STATEMENT IN EFFECT
    Issued: 9:22 PM PDT Monday 20 August 2018

    Forecast Issued 4:00 PM PDT Monday 20 August 2018 - Monday night: Overcast. Widespread smoke. Low 11. Tuesday: Overcast. Widespread smoke. High 26. Humidex 31. UV index 3 or moderate. Tuesday night: Partly cloudy. Widespread smoke. Low 11. Wednesday: A mix of sun and cloud. High 27. Wednesday night: Cloudy periods. Low 12. Thursday: Sunny. High 23. Thursday night: Clear. Low 11. Friday: A mix of sun and cloud. High 24. Friday night: Cloudy periods. Low 12. Saturday: A mix of sun and cloud. High 20. Saturday night: Cloudy periods. Low 13. Sunday: A mix of sun and cloud. High 21.

  • Current Conditions
    Temperature
    14.2° C
    -0.9 ° C/hr
    Barometer
    101.8 kPa
    0.0
    Wind
    N/A 0.0 km/h
    gusting 0.0 km/h
    Humidity
    69 %
    Rain Rate
    0.0 mm/hr
    Wind Chill
    14.2° C
    Heat Index
    14.2° C
    Dewpoint
    8.6° C
    UV
    0.0
    Solar
    0 W/m2
    Last Updated: 2:50:00 PDT
    Click to Refresh or See All Conditions
  • Day Almanac
    Day's Rain
    0.0 mm
    Day ET
    0.0 mm mm
    Rain Storm
    NotAvailable mm
    Civil Rise
    05:44
    Moon Phase
    Waxing gibbous (79% full)
    Civil Set
    20:59
    Day Length
    13:22:16
    Day High
    17.2° C @ 00:00 Tdy.
    Day Low
    14.2° C @ 02:48 Tdy.
    Day High Rain Rate
    0.0mm/hr00:00
    Day High Barometer
    101.8 kPa @ 02:14 Tdy.
    Day Low Barometer
    101.75 kPa @ 00:00 Tdy.
    Day Low Windchill
    14.2° C @ 02:48 Tdy.
    Day High Heat Index
    17.2° C @ 00:00 Tdy.
    Day High Wind Gust
    S 0.0km/h @ 00:05 Tdy.
    Day High Solar Radiation
    0W/m2 @ 00:00 Tdy.
    Day High UV Index
    0.0 @ 00:00 Tdy.

Update Saturday 4PM

The River Forecast Centre just downgraded the Flood Warning for the Port Alberni and Central Vancouver Island Area to a Flood Watch.  This is good news in that it should indicate that the rivers will begin to recede tonight and hopefully more tomorrow after the rains end.

We still have Monday to deal with and I would be surprised if the Watch was downgraded further to a High Streamflow.  More likely is that the Watch will continue until the end of the rain events early next week.

Take care out there.

And if you’re bored… I got a new webcam!  It’s a live stream!  I am testing it right now.  It might go on and off.  It’s just my basement 🙂  The plan is to have this thing up on the roof for a full view of the Valley!

……….

The rains are starting to ease in the Valley as last night’s system has pushed through and left unsettled showers behind.

The rivers remain very high and the Somass is raging.  Flooding has occurred on Tseshaht reserve and they are sandbagging as well as evacuating some residents.  Flood Warning remains, check the BC River Forecast Centre for details and updates (there should be an update sometime this afternoon)

We should have a mostly dry afternoon and evening before a brief bit of showers invade around 11PM.

Rain Scale

screen-shot-2016-11-05-at-12-11-17-pm

The next major system will invade starting in the 6PM (PST) hour on Sunday.

screen-shot-2016-11-05-at-12-13-19-pm

Peak rain rates are forecast to occur in the 11PM Sunday-12AM Monday hour with rain rates of 4mm per hour (yellow) in the City and 8mm per hour (salmon) in the Sproat and deep Valley areas and  16mm per hour (blue) in the western mountains that drain into Sproat and Great Central Lakes..

screen-shot-2016-11-05-at-12-14-49-pm

The rain should end locally in the morning on Monday but will continue in the mountains most of the day in advance of another system on Tuesday.

Totals for the 24 hours between 4PM Sunday and 4PM Monday:

Port Alberni: up to 30mm (green)
Sproat Lake/Valley: up to 60mm (pink)
Western Mountain catchments: over 60 to 100+mm (black/red)

Rain Scale

screen-shot-2016-11-05-at-12-19-46-pm

The highest times of the rivers will be difficult to predict as the water filters down through the mountains and lakes but they are likely to get very high on Monday/Tuesday and further into next week.

Tides are building to the Full Moon on the 14th as well so we will need to keep an eye on the Tide tables to know when flooding might be at its worst.  The highest tide in the next 5 days is 9.2ft Saturday at 4:19PM and then 5AM and 4:20PM Sunday, 6AM and 5:20PM Monday.  The next 9ft tide is 5:20PM Wednesday.

screen-shot-2016-11-05-at-12-26-34-pm