KETCHIKAN GATEWAY BOROUGH; ANNETTE ISLAND — A stronger atmospheric river continues to move over the panhandle Thursday evening, lasting through Friday morning. Multiple waves moving up will bring persistent moderate to heavy rain for much of the southern half of the panhandle, with the heaviest rain expected through Thursday night. Elevated gusty winds are expected alongside this heavier rainfall, with the strongest winds expected Thursday night. Prolonged periods of moderate to heavy rain will produce significant river rises with the potential for at least minor flooding. Gusty winds alongside the long duration heavy rainfall will bring a possibility of isolated landslides.
* WHAT...Flooding caused by excessive rainfall continues to be possible.
* WHERE...The following area, Southern Inner Channels. This includes the cities of Ketchikan And Metlakatla.
* WHEN...Through Friday afternoon.
* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, other low-lying areas and flood-prone locations. Street flooding and flooding of creeks and rivers are possible. Isolated landslides are possible in areas of steep terrain.
* ADDITIONAL DETAILS... - Rain totals between early Thursday morning and late Friday morning for the Ketchikan and Metlakatla area are still expected to be around 4 to 6 inches, with higher rain totals favoring southern facing mountain sides. Highest rain rates are currently expected through this evening, where rates could exceed 0.5 inches per hour.
We will continue to see winds of 25 to 35 mph with gusts to 55 mph at sea level, and exceeding 60 mph at elevation, with the highest winds expected Thursday night. With the multiple rounds of moderate to heavy rainfall and the elevated winds, there is possibility for isolated landslides along steep mountain slopes.
Flooding in Ketchikan Gateway Borough; Annette Island 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