Flood Advisory issued December 29 at 3:09AM AKST until December 29 at 7:15PM AKST by NWS Juneau AK
发布日期：2025-12-29T12:09+00:00
An atmospheric river is currently streaming moisture into the Petersburg Borough area, with several inches already fallen from heavy rains. With recent and past snowfall, heavy rains from the atmospheric river, and snow, ice, and other debris clogging storm drains, minor flooding is currently occurring. Moderate to heavy rain is expected to continue from this atmospheric river through Monday morning, which will continue to drive snowmelt in the surrounding areas. * WHAT...Flooding caused by rain and snowmelt continues. * WHERE...Petersburg and Mitkof Highway * WHEN...Until 715 PM AKST Monday. * IMPACTS...Water over roadways. Storm drains and ditches have become clogged with debris. * ADDITIONAL DETAILS... - At 307 AM AKST, emergency management reported rain and snowmelt are causing minor flooding. This is causing minor flooding from overflow of poor drainage areas due to ice, snow, and other debris clogging storm drains. Between 2.5 and 4.0 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible.
Flood Watch issued December 28 at 11:19PM AKST until December 29 at 3:00PM AKST by NWS Juneau AK
发布日期：2025-12-29T08:19+00:00
An atmospheric river continues to move into the panhandle tonight. Heavy rain, increasing temperatures, rising snow levels, and snowmelt could lead to minor flooding for ponding on roadways due to snow and other debris around storm drains. Additionally, heavy rain with snowmelt could lead to rapidly rising small streams. Rain accumulations for the remainder of the watch duration could be between 2.5-5.0 inches for the southern panhandle, with around a 10% chance to exceed these numbers. At this time, there is around a 60-80% chance to exceed 5 year 24 hour return intervals on Monday, with heaviest rates currently occurring. Areas near Metlakatla have currently achieved a 2 year return interval for 24 hours. Near Metlakatla and Ketchikan, with these rates, along with increased likelihood of wind gusts greater than 40 mph tonight and recent snowmelt, conditions isolated landslides in steep terrain are possible. For the central panhandle, including Petersburg and Wrangell, rain accumulations between 3.0-5.0 inches. Flooding in roadways from poor drainage and clogged storm drains is currently occurring in Petersburg. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...The following areas, Prince of Wales, Southern Inner Channels and Central Inner Channels. This includes the cities of Petersburg, Kake, Port Alexander, Craig, Klawock, Hydaburg, Coffman Cove, Thorne Bay, Wrangell, Ketchikan, And Metlakatla. * WHEN...Through Monday afternoon. * IMPACTS...Excessive runoff combined with snowmelt may result in flooding of rivers, creeks, streams, other low-lying areas and flood-prone locations. Ponding on roadways due to snow, ice, and other debris clogging storm drains is possible. * ADDITIONAL DETAILS... - National Weather Service Meteorologists are forecasting heavy rainfall on a primed snowpack, which may lead to increased runoff and landslides in prone areas. Heavy rain is currently falling on the existing snowpack as well as expected accumulating snow leading to increased runoff from high freezing levels. Stream flows in small streams have begun to increase quickly but is currently not expected to exceed bankfull conditions at this time. Rain accumulations after transitioning from snow to rain could be between 2.5-5.0 inches for the southern panhandle, and 1.5-3.0 inches for the central panhandle.
