Friday, November 13, 2009
Convective snow over the higher lowlands
There is snow falling in convective showers tonight. The air aloft is cool and heavy showers can drive the snow level down to the surface due to evaporation and melting.
The latest radar shows a strong band over the northern Sound...this is not your classical PS convergence zone, but rather a secondary convergence zone in the lee of Vancouver Island...something we don't talk about much. There is convergence and resulting upward motion between northerly flow moves southward down the Strait of Georgia and westerly inflow through the Strait. Check the wind plot below to see this.
Posted by Cliff Mass at 10:12 PM