As predicted by the POTRBLOG team on January 21st. "The evidence for such effects would be distributed and difficult to localize detections of fresh radioactive fallout" .
Radioactive Iodine is now being reported to have been detected in Europe during the time period in question. We expect that there will also be evidence of Plutonium 239 spallation.
See the detection report here:
Updates to follow:
Additional news reports are filtering out with further Jod-131 Iodine 131 detections in additional Nordic countries
Further news reports: Radioactive Iodine In The Air
News from the BarentsObserver
Measures radioactive iodine in Barents Region
The Barents news report indicates that iodine detections where in the NORTHERN Norway and NORTHERN Sweden. Under typical geomagnetic conditions Protons from Coronal Mass Ejections are directed towards the Earth's Poles, hence these might be expected to produce the first reports of radioactive iodines created by the spallation of Cesium 133 by Solar Protons.