UAV Forecast provides a comprehensive forecast of flying conditions by combining weather data, visible GPS satellites, and solar flare (Kp) activity. It's completely free! Visit the new site here:

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Comment by dusl on March 20, 2015 at 6:14pm

nice work

Comment by Adam Kroll on March 20, 2015 at 7:22pm

Thats really useful, thanks for that. I can easily scroll down the page and see what day is best to go flying after work.  It would also be useful just for RC flying.

Comment by Gary McCray on March 20, 2015 at 7:59pm

Really Great Forecaster Lloyd,

It came up with my home location already in it and it's really easy to use.

You might clarify what Kp is on the page itself.

I think a lot of people don't know its how Solar radiation is forecast to affect the ionosphere that can interfere with GPS or radio communications.

Best Regards,


Comment by Nikola Rabchevsky on March 20, 2015 at 8:17pm

Nifty.  I'd like to know why it seems that you get the most GPS PRNs at around 5pm.

Comment by lloydm on March 20, 2015 at 10:37pm

The GPS satellites have a 24-hour orbital period, so they're in roughly the same place in the sky at the same time every day. Their orbits do change slightly over longer periods of time though so the number of visible satellites is not always the same, but it's usually pretty close.

Comment by Hugues on March 21, 2015 at 1:31am

Fantastic! Added to bookmarks.

Comment by Felix Meissner on March 21, 2015 at 2:11am

wow - that's really great! Thanks a lot!!

Comment by Alexey Dobrovolskiy on March 21, 2015 at 1:27pm
Hi, site doesn't work
Comment by DG on March 21, 2015 at 3:23pm

It says windy at my location, and it is. It also says "no" to fly for the next week! :(

Nice tool. I've been using a K-Index phone app, now this gives complete info in one spot.

Comment by Foxzilla on March 21, 2015 at 3:24pm

Works for me. This is great, I had been searching something like this earlier. Left a couple feat requests.


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