{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf320 {\fonttbl\f0\fswiss\fcharset0 Helvetica;} {\colortbl;\red255\green255\blue255;} \margl1440\margr1440\vieww9000\viewh8400\viewkind0 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\ql\qnatural\pardirnatural \f0\fs24 \cf0 BKN cirrus and diamond dust\ -29.3 C\ 79% RH\ 6.8 kt @ 128 deg\ \ The diamond dust event is evolving. Bullets in clusters are getting longer and thinner and the clusters are clustering. An interesting halo event has also developed. A 22 deg halo of moderate brightness exists, but the solar elev. is < 22 deg, but the halo doesn't stop, it extends below the horizon. More interestingly, the halo appears to be the reflection off the surface and not the air near the observer. See photos. }