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Post by TCU 2U2 on Mar 15, 2013 7:46:42 GMT -5
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Post by chachiman on Mar 16, 2013 15:44:00 GMT -5
Maybe difficult for the average person that does not know much about different types of precipitation, but I surely can tell them as a human weather observer for 20 years, I think I can tell just fine the difference between frozen, freezing, and liquid precipitation and definitely can tell when it is sleet or not lol.
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Post by hlsto2 on Mar 16, 2013 16:47:41 GMT -5
I think all pilots think that ASOS is determining pcpn on it's own. well...of course at atct sites and sites on AUTO this is partly true. We all know that asos can only detect rain and snow...and possibly freezing rain. Maybe if they knew that only at CWO sites the correct pcpn type will ALWAYS be entered into the present weather field.They need to know that ice pellets...hail...drizzle/freezing drizzle...snow grains...can only be detected by a human observer. I don't count atc folks as observers.
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w0x
New Member
Posts: 44
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Post by w0x on Mar 18, 2013 22:21:41 GMT -5
and IC also.
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Post by hlsto2 on Mar 19, 2013 0:38:47 GMT -5
IC..right. Never seen it as the most northern observing sites I have been are central georgia and north texas. Also, I think it is worth mentioning that ASOS cannot detect HZ BR or FG/FZFG. It makes the call based on a combination of temp/dewpont spread...visibility and below 0C for FZFG. Also...ASOS thinks BLDU is HZ. How many times I have seen an ATCT ASOS in a dustsorm allowing ASOS to report HZ. This contract tower up the street reported BR instead of BLDU once. But...hey...FAA says no degradation in service or safety!
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