(24-hour charts updated Friday, December 13, 2024 at 12:00PM Central).
The orginal ASP page is named Rosy, a nickname windsurfers from the Tri-Cities gave Roosevelt, a sailing site on the east end of the Columbia River gorge.
This first pair of sample charts, wind and temperature, is updated every
hour. The site location for these is randomly picked from a list
of five stations: RMTN,
KRLD, KMKT, PHOG, and PAQT. The two vertical lines and the data plotted to
the right of these are explained
in the help topic on the 24-hour charting option.
(Multi-day charts updated Friday, December 13, 2024 at 11:00AM Central).
In case you know someone who has moved to Alaska.
The following (three) 25-day pressure charts show the contrast between
sites in Alaska, Washington state, and Hawaii. This progression shows the
increase in diurnal pressure variation as the pressure sensor gets closer to
the equator. Here are a couple articles on this:
ScienceDaily and the
University of Wyoming.
This Washington state data (near Richland WA) shows a morning peak about
10am.
The Hawaii data shows the double-peak (10am and 10pm).
The chart below is a 10-day plot of pressure differentials along the
Columbia river in Washington. Delta-p data is often used by windsurfers
to forecast sailing conditions in the Columbia Gorge. As the west to east
pressure differentials rise, so do the summer west winds that blow against
the current in the river. These counter-current winds produce the smooth
swells that the windsurfers love.
This chart splits the pressure difference into two parts. Notice the
mid-day peaks in the west half (green) are commonly followed by a late-day
peak in the east half (red). Windsurfers sometimes travel east from Hood
River to follow the best winds in the Gorge that typically work their way east during
the day.
Many moons ago I lived in Richland WA. It was about an 80-minute drive from
there to the Roosevelt WA sailing site on the east end of the Gorge. It
often worked out well to take a couple hours of vacation and drive down and catch the
late-day peak.