CITY AND BOROUGH OF JUNEAU — * WHAT...Nuisance flooding on roadways and small stream flooding caused by excessive rainfall continues.
* WHERE...Roadways within the Mendenhall Valley, areas around Montana Creek and Jordan Creek.
* WHEN...Until 130 AM AKDT Saturday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas. Ponding on roadways impacting the Friday morning commute. Some low-water crossings may become impassable.
* ADDITIONAL DETAILS... - At 441 AM AKDT, satellite estimates indicate heavy rain ongoing across the advisory area. Rapid river rises will cause nusiance flooding of roadways, poor drainage areas, and small streams reaching bankfull conditions, especially near Montana Creek And Jordan Creek. Between 1.5 and 2.5 inches of rain has fallen in the last 12 hours. The heaviest rainfall rates of 0.2 to 0.3 inches in 1 hour are expected through the next couple of hours before quickly diminishing into Friday morning. Additional rainfall amounts of 1 to 2 inches are possible. - For Jordan Creek near Juneau: At 4:00am the stage was 8.3 feet. Flood Stage is 9.7 feet. Forecast: A crest around 9.2 feet is expected around 9:00am Friday.
Impacts: At 9.2 feet: This is the stage when Jordan Creek is at bankfull and water will begin to inundate areas along the edges of the creek near Race Reality and Jordan Square. At 9.7 feet: Water will inundate the Jordan Square's front and back parking lots, around Jordan Creek office condominiums with up to one foot of water. Some residential driveways will be flooded and cut off.
For Montana Creek at Back Loop Bridge: At 12:00pm the stage was 11.2 feet. Flood Stage is 14.5 feet. Forecast: A crest around 14.5 feet is expected around 7:00am Friday.
Impacts: At 14.5 feet: Water begins flowing over the low water crossing on Montana Creek Road. Bankfull conditions at the gauge with water starting to inundate adjacent undeveloped fields along Mendenhall Loop Road.
Flooding in City and Borough of Juneau can cut off roads with little warning, damage homes near low-lying areas, and disrupt power and water service. Even a few inches of moving water can carry away a vehicle.
This report is based on information from NWS, monitored by Alert USA's verified emergency feed.
Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.
Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.
Alert USA is tracking this flood event and will update this report as verified information becomes available.
Verified by Alert USA • NWS