Downloading 192 atmosphere slices for 12 hours by 16 levels (15-20mb total)
|
Winds and Convergence Vertical Velocity at Constant Pressure levels Fraser ValleyC
All Fraser Valley RASP Forecasts (Static all browser friendly)
Just Fraser Valley Pressure Slices
 Windgrams Fraser Valley
Blipspots numeric site data:
Blipspots - Woodside Bridal and other Sitesa
Each image shows a constant pressure "height". As barometric pressure changes, the altitude above sea-level of any given pressure varies.
Each 10mb in height represents about 100 meters or 320 feet of altitude. 1000 mb pressure is usually between 0 and 350ft.
As overall pressure changes, these constant pressure heights will move up and down in altitude above sea level.
When the surface pressure is less than 1000mb, it is a fairly deep low pressure. Standard sea level pressure is 1013mb.
For a full explanation of pressure levels see Haby Hints.
The actual altitude for a given level can be estimated by where the
level hits the known mountains (the color is the same as the border of
the map). Blanchard is 2200' Stewart is 3000', Black is 4800. The
contour maps used by the forecasting model are smoothed and often
poor representations of important local features that make a big
difference in our ability to fly a given site on a given day.
|