Not sure which 8-14 day outlook you are using but mine shows above average temps to the end of the month.
2011 is statistically very close to where we are now, but that year was very wet and cold all the way into June. Which is why Ron likely choose 2012 to compare to even though it is slightly below our snowpack level currently.
The difference in 3 to 3.5 inches of SWE is 3 days of 70+ temps or a week of 50+ on Banner anyway. So not going to affect the road that much.
In 2012 we launched on Marsh Creek on May 17th at about 7 feet on the gauge or 10K cfs. That was the second peak. First peak was on about 4/28 at 11K cfs.
So those of you are thinking this spring is going to be HUUUUGGEEE. May be disappointed. It will not be small but 138% of average with so many dry years averaged in doesn't mean as much to me as the SWE.
We did have a lot of depth of snow this year. A lot of it was considerable drier than we normally get. Which means not as much water coming out of it. We also had almost completely bare slopes virtually everywhere in central Idaho until early February. Maybe in the more protected environment of the Snotel site that won't show but it does affect runoff in that the slopes that were bare hold more water, melt off quicker and less water hits the river.
I started a spreadsheet so I don't have to keep going back to the Snotel site.
The upshot of all this is I am likely cancelling my May 19th as I have been invited on a June 1st that I think is likely we will be able to drive in to launch.
And fishing season is open then.....
Disclaimer: I make all this shit up. But I have been correct in my guesses more than I have been wrong. 2010 with its 9.5 foot peak did surprise but that was fueled by three days of hard rain. FWIW.
Find your bliss.