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Guest glenb

Hi,We have seen this CAVOK many times and have seen it defined as Ceiling and Visibility OK. Is there an

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"Ceiling And Visibility OK": No CB, no cloud with base less than 5000ft or below the highest minimum sector altitude, whichever is greater & visibility 10km or more & no weather of 'significance' i.e. DZ, RA, SN, SG, PL, IC, GR, GS, FG, BR, SA, DU, HZ, FU, VA, PO, SQ, FC, DS, SS ... and variants.


Devin Pollock
CYOW

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Hi,From the ASV Weather Guide:Although not used in US, Ceiling And Visibility OK replaces visibility, weather and clouds if: visibility >=10km;no cloud below 5000 ft (1500m) or below the highest minimum sector altitude, whichever is greater and no CB;and no precipitation, TS, DS, SS, MIFG, DRDU, DRSA, or DRSN.Is it possible to see clouds when CAVOK is reported?? YES it is!!Hope this helps,JimActiveSky Sales and Supporthttp://www.hifisim.com/images/asv_dev_team.jpg http://www.hifisim.com/images/asv_proud_supporter.jpg

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Guest glenb

Thanks,I did a search of the ASV Weather Guide looking for CAVOK but I it is not there but your definition is.

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