With WeatherSpork version 4.3.0, you now have the option of selecting FL450 as the upper limit on the clouds and weather display. The upper limit on earlier releases was restricted FL200. This will allow you to see winds (speed and direction) as well as clouds and advisories (G-AIRMETs and SIGMETs) that extend higher in the flight levels or FL450.
To change the altitude limit, go to the Route Profile view and simply tap or click on the black route button at the top. That will bring up the Route Profile settings. Scroll down in the settings window (shown below) to find the Maximum Altitude setting and select FL450 and tap or click Save. The other selections of 6,000 ft MSL, 12,000 ft MSL and FL200 will remain available.
This enhancement only affects the Route Profile view. The Meteogram view will still remain limited to a maximum altitude of FL200.
Weather Systems Engineer