December 2, 2020

Valley Cloud today

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

    Forecast Issued 05:00 AM PST Wednesday 02 December 2020 - Wednesday: A mix of sun and cloud. Clearing this afternoon. Fog patches dissipating near noon. High plus 4. UV index 1 or low. Wednesday night: Clear. Increasing cloudiness late this evening. Low minus 1. Thursday: Cloudy. 60 percent chance of showers late in the morning and in the afternoon. High plus 4. Thursday night: Cloudy with 60 percent chance of showers. Low plus 4. Friday: A mix of sun and cloud. High 6. Friday night: Cloudy periods. Low plus 3. Saturday: A mix of sun and cloud. High 6. Saturday night: Cloudy periods. Low zero. Sunday: Cloudy with 60 percent chance of showers. High 7. Sunday night: Periods of rain. Low 7. Monday: Rain. High 9. Monday night: Rain. Low 6. Tuesday: Cloudy with 60 percent chance of showers. High 9.

The forecast today has a term I’ve never seen used:

Valley cloud. Fog patches dissipating this afternoon. High plus 5 except plus 1 areas of low cloud

In other words, the fog may lift but won’t clear completely everywhere and so it will stay cold in those areas. Great day for a trip over to the East Coast!
Update: I’ve modified the Freezing Level calculation a bit so that it only calculates it if the Cloud Base is above 900m(3000ft). Below that usually means it’s foggy and/or inversion effect and the calculation is no good anyway. Hopefully that doesn’t completely wipe out it’s usefulness, as we all know how often we have fog or Valley Cloud during the winter. 🙂

Update: I’ve just installed the “hardened” temp/humid sensor that I received from Davis. It’ll take it a little while to acclimatize completely but it seems to be operating fine, hopefully this is the last time I have to go up on the roof this winter.