Icing forecast FIP vertical resolution

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lucius

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Aviationweather.org shows vertical resolution of the icing forecast product (FIP) in 3000 feet increments.

Leidos shows it in 1000 feet increments.

Is Leidos’ 1000 feet resolution just interpolated between the 3000 feet resolution or does the FIP computer model indeed produce a 1000 feet resolution product and Aviationweather.org is just not displaying at 1000 feet vertical resolution?

Thank you.
 
Aviationweather.org is not a valid website (today), do you have a correction for us?
Thanks.
 
thanks; I can't even find the icing product on 1800wxbrief.com - can't see it under maps or charts.
 
The icing forecast of AWC is at

Aviation Weather Center

How can the Aviation Weather Center help you? AWC provides comprehensive user-friendly aviation weather information.
aviationweather.gov aviationweather.gov

Leidos icing forecast is at https://www.1800wxbrief.com/Website/interactiveMap. You have to click the checkboxes of the product you are interested in, then have a slider for each 1000ft altitude.

1711057697949.png
 
Icing forecast are ok to alert you to the possibility of ice, but that’s about it.
 
PaulS said:
Icing forecast are ok to alert you to the possibility of ice, but that’s about it.
Click to expand...
Not sure how this answers the question about vertical resolution difference between AWC and Leidos. Can you explain? Thank you.
 
lucius said:
Not sure how this answers the question about vertical resolution difference between AWC and Leidos. Can you explain? Thank you.
Click to expand...
Well, to start they both have terrible horizontal resolution being guesses at best (although an educated guess), so vertical resolution is irrelevant. Trying to use these forecasts to thread between icing areas is nuts. Just understand that ice is a possibility, solicit pireps from atc, avoid those areas. Understand that icing conditions typically are very dynamic, an area that was reported by a pilot as negative ice can become moderate or worse in 15 minutes or less. This happened to me.

Icing for a small airplane will be different than icing for an airliner. Avoid precip, try to stay out of the clouds when temps are favorable for ice. If you mess around near ice, at minimum you should have a tks system, better yet a FIKI system. Even then, avoid ice unless you have a clear and sure exit if the ice you penetrate is worse than expected.

But the bottom line, and the reason for my comment, is the ice forecasts are just a little better than useless most of the time, they both suck.
 
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