TAF question
- Thread starter Captain
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eetrojan
Pattern Altitude
Does it change? I thought the cloud layers/ceilings were always coded in three digits representing hundreds of feet AGL.
SixPapaCharlie
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Sixer
I googled it and this was the only link I could find on the subject
http://www.pilotsofamerica.com/forum/showthread.php?t=76569
http://www.pilotsofamerica.com/forum/showthread.php?t=76569
jordane93
Touchdown! Greaser!
I've seen TAF's that have clouds up to 25,000 ft and as low as 100 ft.
poadeleted20
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TAF's will show clouds in 100-foot increments up to some point which I have forgetten, then only in 500-foot increments, then only in 1000-foot increments. IOW, while you may see 001-002-003, you'll never see 051-052-053, but you will see 050-055-060, and while you'll see 050-055-060, you wont see 150-155-160 (or something like that). I just don't remember exactly where the break points are where they shift the minimum reporting increments.
eetrojan
Pattern Altitude
If Ron's comments re increments relates to Captain's question, page 3-13 of Advisory Circular AC-0045G re Aviation Weather Services includes this table re "reportable values":
Page 7-19 says that "TAFs use the same weather codes found in METAR weather reports..."
Page 7-19 says that "TAFs use the same weather codes found in METAR weather reports..."
eetrojan
Pattern Altitude
And that statement is incorrect...but, not the first time the FAA got it wrong in an AC related to weather. For example, TCU (towering cumulus) is not used in a TAF although you may see it used in a surface observation. Moreover, increments of cloud heights (AGL) in a TAF are different than surface observations as shown below for TAFs...
Scott, is that table from a particular publication? Thanks!
Captain
Final Approach
And that statement is incorrect...but, not the first time the FAA got it wrong in an AC related to weather. For example, TCU (towering cumulus) is not used in a TAF although you may see it used in a surface observation. Moreover, increments of cloud heights (AGL) in a TAF are different than surface observations as shown below for TAFs...
Thank you. That exactly answers my question.