| There would be isolated altocumulus castellanus cloud with the tops at 16 000 feet, giving 2 to 5 sm visibility in light rain showers and mist. |
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| Altocumulus castellanus cloud was presently in the Fort Liard area, and the ceiling in Fort Nelson had gone from 8000 feet agl to 3000 feet agl. |
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| There would be scattered embedded altocumulus castellanus and towering cumulus cloud with the tops at 20 000 feet, giving 1 to 3 sm visibility in rain showers and mist. |
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| Turbulent mixing, evidenced by alto-cumulus castellanus cloud over France, also took place en route and carried dust to high altitudes. |
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