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Old August 11th 14, 06:15 AM posted to rec.aviation.soaring
WaltWX[_2_]
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Posts: 310
Default US Rules change needed for devaluation of contest day

Tim and all...

Here's the Sat imagery, Radar for the last day at Nephi. The plus plots are the TP database. The label for the plot points is mangled due to a bug in the program.

Here are two radar loops from MTX (Salt Lake City radar): One is reflectivity at 0.5 deg (lowest) elevation angle; the other is for echo tops in thousands feet. The GOES 1km Vis photo follows that. Note that there was an outage of sat imagery between 130pm and 3pm MDT (1930z-2100z):

https://www.dropbox.com/s/pyze3df7tc...1_20140809.mp4

https://www.dropbox.com/s/lc7wtxh3lh...s_20140809.mp4

https://www.dropbox.com/s/zou6a4j9n9...s_20140809.mp4

One suggestion on how to get the most timely radar graphics. Install an app called "RadarScope" or "Radar Pro". It's the best app out there for NEXRAD radar imagery of professional quality (free and paid for version - Iphone, Ipad, Android). I recommend the paid for version ($4.99) because it has lightning data plots. Lightning data in the U.S. is proprietary and must be accessed with a subscription (even the NWS pays for it). The Pro version also has the latest 20 frames instead of 5 (they come in every 3-10 minutes). There is no PC version... just IOS and Android. The free version is minus lightning data and shows only last 5 frames.

I've used this on the ramp just before launch to help make a decision on which way storms are moving or developing. It's also good for deciding on whether or not to disassemble. Works great on a small screen PDA phone.

Walt Rogers WX