An atmospheric river moved out of the north Pacific into the Gulf of Alaska September 25th and started to impact the northern half of the Southeast Alaska's panhandle. This event brought in very high amounts of moisture, winds and very warm temps through September 27th. These warm temps rose the freezing levels to be above 9 thousand feet to increase the amount of melt from glacier in headwaters of the Taiya River. Rain amounts from this event ranged from 3 to 5 inches in 36 hours. The heavy rain and high freezing levels produced significant amounts of runoff to cause moderate flood along the Taiya River near Skagway in Dyea and around the Jordan Creek area near Juneau from mid morning on September 26th through the morning of September 27th.
As the front moved through the area there was a wind shift in the afternoon hours of September 26th and with the ground very wet from the heavy rain caused a tree to fall which triggered a shallow landslide in downtown Juneau to damaged 3 homes. The heavy rain also triggered a landslide near mile marker 26 along the Haines Highway Monday afternoon and 2 near mile marker 31 along Glacier Highway in Juneau one around 1700AKST and then again in the early morning of September 27th.

Debris Flow in HAINES BOROUGH, ALASKA
From 26-SEP-22 08:00:00 to 26-SEP-22 23:00:00 (AKST-9)
Location: KLUKWAN
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

During the early morning hours of September 26th a large landslide came down along the Haines Highway around 23 mile and blocked the highway. AKDOT was on site by day break to assess the situation and begin to clear the material. The highway was reopened by the afternoon. Six hour rainfall amounts ranged from 0.50 to as much as 1.75 at higher elevation. This is after the area had been experiencing heavy rainfall.

Debris Flow in JUNEAU BOROUGH, ALASKA
From 26-SEP-22 17:00:00 to 26-SEP-22 22:00:00 (AKST-9)
Location: DOUGLAS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Around 1700AKST on September 26th there was a strong wind shift to the west after hours of strong southeast winds and heavy rain with 3 hour amounts of over 0.50 leading up to the event. The ground was saturated and the wind shift triggered a large tree to fall from steep terrain in downtown Juneau to produce a shallow landslide. The material hit 3 homes with one resting on the one below it. There was no one was injured but there was significant damage to the 3 homes that were impacted. The impact area was isolated with other residences in the area evacuated until the area was declared safe.

Debris Flow in JUNEAU BOROUGH, ALASKA
From 26-SEP-22 17:00:00 to 27-SEP-22 08:00:00 (AKST-9)
Location: DOUGLAS
Flood cause: Heavy Rain
Property damage: 18.80K
Crop damage: 0.00K
Reported by: Emergency Manager

AKDOT respond to a small shallow landslide around mile marker 31 along Glacier Highway which closed the highway for a period of time. The slide was reported around 1700AKST which was was the front went through the area and there was very high rain rates of over 0.50 in 3 hours after more than 2 in the previous 24 hours. The heavy rain persisted overnight and another small slide came down very close to the location of the first one the previous day. AKDOT was able to clear the material in a few hours to have the road back open.

Flood in TAIYA INLET, ALASKA
From 26-SEP-22 09:00:00 to 27-SEP-22 07:00:00 (AKST-9)
Location: SKAGWAY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

The Taiya River began to rise from the heavy rain and ice melt in the early evening of September 25th with it going above minor flood stage of 16.5 feet by the early morning of September 26th. As the heavy rain persisted along with enhanced runoff from the warm temperatures��in the headwaters the Taiya River rose rapidly right through the moderate flood stage of 17 feet and crested 18.84 feet in the afternoon hours of September 26th. The heavy rain moved passed the area in the evening and the river started to recede. The Taiya River went below moderate flooding by mid morning on September 27th and below minor flood stage in the early afternoon. The National Park Service closed the Chilkoot trail due to flooding impacts of thigh deep or higher swift cold water. There was also a significant��amount of flooding that closed the Dyea campground along with a house in Dyea that was surrounded by 2 feet of water. There was some damage from erosion��to the roads in Dyea, one in particular leading to the cemetery.

Flood in JUNEAU BOROUGH, ALASKA
From 26-SEP-22 22:00:00 to 27-SEP-22 04:00:00 (AKST-9)
Location: DOUGLAS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Jordan Creek in Juneau started to rise in response to the heavy rain through September 26th with it going over minor flood stage of 9.7 feet in the late evening hours. Water levels continued to rise at a fast pace from 12 hour rain of amounts of over 1.50 inches. The runoff from the heavy rain pushed Jordan Creek just above moderate flood stage and crested at 10.58 feet before receding below flood stage by the morning hours of September 27th. There was significant flooding of roads and parking lots around the Jordan Creek area and along Jordan Avenue. Some homes did put up sandbags to stop flood waters from coming into their homes with some water getting right up to other residences.