With a nod to SRV it looks like the recent halo-CME (Coronal Mass Ejection) has significantly upset the space weather. Here is the latest plot.
Looks pretty interesting for those attempting to work in the super latitudes (far north like NS). We are just starting to head up the ramp on Cycle 24 of the 10.7 year solar cycle. The peak this time should be around mid 2013 but it's already becoming active. This one was a pretty big flare, actually two of them and both directed to the earth. The event happened on Aug 1st and should subside around Aug 6th, give or take a day.
I downloaded 6 hours of recent data from a Fairbanks, Alaska CORS and took a look at the raw plots. The data had an RMS of nearly 8 and I generally see 3 or less so that would imply that the data is going to be very noisy. I think you can safely do short base lines but units might have troubles with getting initialized and I would not want to try any long baselines. This would include using OPUS although I'm going to send in Fairbanks to OPUS and see what it spits out just for grins and giggles.
Do they make sunscreen for GPS units?
And you might have problems with cell phones or other electronic devices. Hopefully this time the electrical grid is better protected and they don't have any serious blackouts.