Bellingham Cold Storage camera may not always point South!
When it does, Blanchard Mt is about 6mi SSE of the peak on the left.
Blanchard launch is   ↓  above and just to the left of the church steeple.  ↓
♥ Source Cam → Baker,Blanchard from Anacortes. | Cam location. | clear air shot | snow shows launch

Low elevation sounding analysis for 48.74N, 122.38W Near Lake Whatcom
♦Reverse Rows

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The atmosphere is Absolutely Unstable	The atmosphere is Conditionally Unstable	The Atmosphere is Absolutely Stable	The Atmosphere is Inverted
When the lapse is more negative than the near constant dry adiabatic lapse rate -9.8 C°/km. that is -3 C°/1000ft) or -5.5 F°/1000ft	When the lapse rate is between -4 C°/km   and   -9.8 C/km that is -1.2 C°/1000ft   and   -3 C°/1000ft or -2.16 F°/1000ft   and   -5.5 F°/1000ft	When the lapse rate is smaller negative than -4 C°/km that is -1.2 C°/1000ft or -2.16 F°/1000ft	When the lapse rate is positive, that is when the higher level air is warmer than the lower air.

 Overall stability will depend on moisture content.   More moisture → less cooling as the air rises → increasing instability.
To think about thermal soaring, remember that the higher the lapse rate the smaller the heating or mechanical trigger required to get air to start rising. Once rising, it will rise until it reaches the level where the temperature has dropped to the dew point and clouds form. Layers of air where the lapse rate becomes stable are called caps. It is possible for strong thermals to "break through" a cap and soaring can continue to much higher altitudes. There is often considerable turbulence associated with breaking through a cap. see JEFF HABY Thermodynamics Q&A
See also the skew-t soundings and text data with indicies at Unisys.
These are for KUIL Quiallute where they actually launch a real balloon.
TJ Olney
A fantastic glossary to help interpret the forecast discussions.