Past 12 months vs historical extremes
Each of the last 12 months, ranked against the same month in all years
Each month is ranked against the same calendar month across the whole record (Junes against Junes), so seasonality doesn't skew the comparison — by its wettest single day and by its total precipitation, both from the wettest side. Months need at least 25 days of valid data to be ranked; the current in-progress month shows as “—”. Highlighted rows rank in that month's all-time top 10 on either measure.
Largest event of each year
When the biggest events happen
All-time top 10 events
1-day
2-day
3-day
Top 10 events · last 25 years
1-day
2-day
3-day
Events are non-overlapping: a single storm counts once per duration, not once per rolling window it spans. Multi-day totals require every day in the window to have valid data. The annual-maximum chart only includes years with at least 300 days of valid precipitation data, so partial years (including the current one) are excluded there but still appear in the past-12-months chart and can still enter the top-10 lists. The seasonal chart assigns each event to the month of its end date and splits the record at its midpoint year; era counts are raw, not adjusted for differing data completeness between eras.