December 14, 2012 — from the NEXRAD RADAR station just north of Reno, Nevada — a large pulse of radio frequency energy was emitted , which in turn produced multiple actual HAIL returns detected by storm tracking.
(click to enlarge):
2km RADAR view from College of Dupage — showing the pulse out of west nevada (return in bright green, which then turned to white/red):
NEXRAD RADAR 100NMview (college of dupage feed):
At the same time of the pulse — Intellicast storm tracking picked up multiple returns of Hail :
High frequency pulse.. producing heating .. which in turn produces CCN (cloud condensation nuclei) .. Ions.. which form into water droplets…
then.. because its cold aloft where this is taking place.. the droplets cool into ice.. which is quickly detected as HAIL by the computer before it dissipates
more on RADAR heating the atmosphere here: