May 4, 2009
A flood of historic proportions began in Eagle along the Yukon River around 2 am on the morning of the 4th. In the week leading up to the flood, temperatures were unseasonably warm as a strong ridge of high pressure developed along the Alaska-Yukon border on April 27th and persisted until May 3rd. In fact, record high temperatures were either tied or broken on the 4 days preceding the flood. The record warmth caused side streams to fill the river channel before the ice on the river broke apart
Source: NOAA National Weather Service Storm Events Database (event 158425). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Upr Tanana Vly Fortymile County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.