A slightly different technique is to look at precipitation percentiles. If the top 10% of precipitation events are compared to the bottom 90% of events, a modest relationship between climate regime and precipitation concentration is evident. Stations in Southeast Alaska receive under 40% of their annual precipitation from the wettest 10% of days. The percentage increases with both latitude and longitude. I expected the pattern to be much more pronounced than it actually was. A study looking at Canadian heavy precipitation events had more dramatic geographical and temporal patterns. That study was the inspiration for this analysis. (Note: this table uses top 10% instead of top 10 events because the total number of events varies dramatically across the state.)
Finally, here is a temporal chart of the proportion of precipitation that falls during the heaviest 10% of events for the three largest cities in Alaska. A temporal pattern is difficult to ascertain.
Final note: When looking at data for all stations, the volume of missing data (and missing years) made a comprehensive analysis nearly impossible. Perhaps that would be a good grant-funded project.