Observing started about 30 minutes late tonight as debris clouds from
afternoon thunderstorms in the area had to clear out.
After that followed about 5 hours of very clear skies and good observing,
with seeing of around 1.5 arcsec. Just over a dozen blazars were observed
in this period. After midnight, a thunderstorm cell formed
unexpectedly and very quickly about 20 miles to the northeast of Kitt Peak.
Operations continued with a great light show from the storm.
At about 0230 local time, debris clouds from the dissipated storm
came over the observatory and
the dome was closed for about an hour. Three more targets were observed
in the final hour of the night.
