Sun. Aug 19th, 2018

The Warmup that Never Happened – The Freeze up that Will

  • Vancouver Island Inland Sections Forecast - SPECIAL AIR QUALITY STATEMENT IN EFFECT
    Issued: 3:34 PM PDT Saturday 18 August 2018

    Forecast Issued 4:00 PM PDT Saturday 18 August 2018 - Saturday night: Clear. Local smoke. Low 11. Sunday: Sunny. Local smoke. High 33. Humidex 36. UV index 7 or high. Sunday night: Clear. Local smoke. Low 12. Monday: Sunny. High 34. Monday night: Clear. Low 12. Tuesday: Sunny. High 34. Tuesday night: Clear. Low 13. Wednesday: Sunny. High 24. Wednesday night: Cloudy periods. Low 14. Thursday: Cloudy with 60 percent chance of showers. High 21. Thursday night: Cloudy periods. Low 13. Friday: A mix of sun and cloud. High 20.

  • Current Conditions
    Temperature
    22.4° C
    -1.7 ° C/hr
    Barometer
    101.82 kPa
    0.0
    Wind
    N/A 0.0 km/h
    gusting 3.2 km/h
    Humidity
    55 %
    Rain Rate
    0.0 mm/hr
    Wind Chill
    22.4° C
    Heat Index
    22.4° C
    Dewpoint
    12.9° C
    UV
    0.0
    Solar
    0 W/m2
    Last Updated: 20:35:00 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
    05:39
    Moon Phase
    First quarter (59% full)
    Civil Set
    21:05
    Day Length
    13:22:59
    Day High
    29.8° C @ 15:23 Tdy.
    Day Low
    11.7° C @ 06:30 Tdy.
    Day High Rain Rate
    0.0mm/hr00:00
    Day High Barometer
    102.42 kPa @ 07:58 Tdy.
    Day Low Barometer
    101.79 kPa @ 19:44 Tdy.
    Day Low Windchill
    11.7° C @ 06:30 Tdy.
    Day High Heat Index
    29.8° C @ 15:23 Tdy.
    Day High Wind Gust
    S 16.3km/h @ 16:05 Tdy.
    Day High Solar Radiation
    1220W/m2 @ 13:26 Tdy.
    Day High UV Index
    7.8 @ 13:25 Tdy.

So did we all enjoy yesterday’s little surprise? We might have another, perhaps more dangerous, surprise today and tomorrow. More below:

I know more than a few that didn’t enjoy yesterday.

What we had yesterday was what we were expecting a few weeks ago but never happened. A bunch of cold air got trapped in the Alberni Valley and instead of maybe a little wet snow flying followed by a bunch of rain, we got enough snow to cause 4 hours or so of chaos (5cm) and then a whole bunch of rain to turn it all into a flooding mess. Thankfully it doesn’t look like the City had any ill effects from the rapid melt.

Here are three temperature graphs from the Islandweather.ca network.
AlberniWeather.day.temperature
AlberniElementary.day.temperature

VIU.day.temperature

Alberniweather, Alberni Elementary School, and Vancouver Island University. The two Alberni stations show brief hints at warmth late on Tuesday but both quickly returned to their posts near or just above freezing (and so did the Airport). By contrast, VIU started warming much earlier in the day and hit over 7C around midnight and stayed there.

We got a couple little hints at the warm air that was flowing over our heads, but it just never happened. But wait, here’s something even more strange, look at the same graph from Maquinna Elementary:

Maquinna.day.temperature

Ah micro-climates… aren’t they fun?

The danger over the next day or so will be the freeze up. We are still hovering at just above freezing which means much of the snow never really melted especially the parts that did manage to get plowed and piled up.

That means it’s probably going to be melting all day and when the cold comes tonight and tomorrow it is going to freeze.

Beware of icy conditions on Thursday

The Cooldown should begin late Wednesday night. We should start around 0C Thursday Morning and go down from there.

slp.36.0000

There is also some residual moisture in the air which means there is a possibility we will get some more drizzle or flurries over the next 24 hours until things finally clear out and cool off. Thursday, Friday and Saturday all look like pretty clear, crisp winter days. Lets hope they turn out that way and that the ice isn’t too bad.

-6 on Friday! Brrr!