Fri. Sep 20th, 2019

Fog fog go away, let that warm sun shine through!

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

    Forecast Issued 11:00 AM PDT Friday 20 September 2019 - Friday: A mix of sun and cloud. High 22. UV index 6 or high. Friday night: Partly cloudy. Fog patches developing before morning. Low 12. Saturday: Becoming cloudy in the morning. Rain beginning in the afternoon. Fog patches dissipating in the morning. High 19. UV index 2 or low. Saturday night: Rain. Low 14. Sunday: Showers. High 18. Sunday night: Clear. Low 7. Monday: Periods of rain. High 14. Monday night: Periods of rain. Low 11. Tuesday: Periods of rain. High 21. Tuesday night: Cloudy periods. Low 10. Wednesday: Cloudy with 60 percent chance of showers. High 16. Wednesday night: Cloudy periods. Low 9. Thursday: Cloudy with 60 percent chance of showers. High 16.

  • Current Conditions
    21.2° C
    1.2 ° C/hr
    101.86 kPa
    W 2 km/h
    gusting 8 km/h
    59 %
    Rain Rate
    0.0 mm/hr
    Wind Chill
    21.2° C
    Heat Index
    21.2° C
    12.9° C
    654 W/m2
    Last Updated: 13:05:00 PDT
    Click to Refresh or See All Conditions
  • Today's Almanac
    Rain since Midnight
    0.0 mm
    Continuous Rainfall (< 24hr gap)
    No Qualifying Rainfall mm
    Civil Rise
    Moon Phase
    Last quarter (63% full)
    Civil Set
    Day Length
    Day High
    21.4° C @ 11:42 Tdy.
    Day Low
    13.7° C @ 07:43 Tdy.
    Day High Rain Rate
    Day High Barometer
    101.87 kPa @ 12:28 Tdy.
    Day Low Barometer
    101.71 kPa @ 02:58 Tdy.
    Day Low Windchill
    13.7° C @ 07:43 Tdy.
    Day High Heat Index
    21.4° C @ 11:42 Tdy.
    Day High Wind Gust
    S 6km/h @ 10:35 Tdy.
    Day High Solar Radiation
    861W/m2 @ 11:26 Tdy.
    Day High UV Index
    4.7 @ 12:41 Tdy.

Monday, Tuesday and Wednesday are looking pretty fantastic if, and it’s a big if, we can shed the morning fog.

I’m using a product from the amazing UW slate this morning that predicts the moisture content of clouds from surface to 3000ft. This, I would think, should give a good indication of fog cover.

Here is the image for this morning 8AM. You can see moisture near the Valley and hanging around much of the island.


An even simpler and maybe more reliable measure is Relative humidity. Anytime you are over 90% humidity you have a pretty good chance to have fog or low cloud. (Right now as I type the station is reporting 98% humidity).

Here is the relative humidity for 8AM this morning. Blues are over 90%.


But does it go away you ask? Yup. By 11AM, the low cloud is nearly gone and relative humidity is dropping to the 60% range.


By 2PM we are below 50% humidity which should mean clear blue sky.


By 5PM we bottom out at around 40%. The grass should be dry and wholly mowable now. 🙂


So it’s going to be sunny? Yup. That means it will be warm too, but how warm?


The model has us topping out as high as 56°F, 13.3°C with points down the inlet getting even warmer!

And the next couple days? Less fog, more sun! There is no low cloud and humidity stays low in the mornings so tomorrow we should peak at…


That will be our peak for the week. Wednesday is set to come back to around 13°C for a high and Thursday some rain showers are likely to return with slightly lower temperatures.

A great start to the week!

2 thoughts on “Fog fog go away, let that warm sun shine through!

  1. That sounds great Chris! You realize everyone’s going to be holding you to this now! 🙂

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