Another fast moving wet system is expected for Tuesday into Tuesday night bringing more rain and wind for the southern panhandle. Total rainfall amounts will be around 1 to 3 inches with gusty winds up to 60 mph possible during the event. Freezing levels will be rising to 3000 to 5000 ft. Expect rapid rises on smaller area rivers and streams Tuesday into Tuesday night, but we are not expecting flooding at this time.
An atmospheric river with multiple surges of moisture has moved into the southern panhandle and will continue through Sunday evening. Heavy rain rates for Ketchikan, Metlakatla, and Prince of Wales Island are expected to continue into Sunday evening, with around a 40-60% chance for 3 hour rates exceeding 0.4 inches. High winds continue for the southern panhandle. The southern panhandle could see 1.0 to 2.0 additional inches of rainfall through late Sunday night.
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WHAT: Flooding caused by rain and snowmelt continues to be possible.
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WHERE: The following areas, Prince of Wales, Eastern Gulf Coast, 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, Hyder, And Metlakatla.
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WHEN: Through Monday morning.
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IMPACTS: Excessive runoff may result in flooding of rivers, creeks, streams, other low-lying areas and flood-prone locations. Storm drains and ditches may become clogged with debris.
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ADDITIONAL DETAILS:
- Around 3.5 to 7.5 inches of rain has fallen for Prince of Wales, Ketchikan, and Metlakatla and around 2.5 to 4.0 inches has fallen for Petersburg and Wrangell within the last 48 hours. Forecast rainfall amounts for Sunday night are around 1.0 to 2.0 inches for the central and southern panhandle, with locally higher amounts expected at higher terrain.
Areas with a pre-existing snowpack, both from recent accumulations as well as the deep, previous snowpack, may have additional runoff. Small streams and rivers were falling, but have risen again today. There is continued uncertainty for exceedence of flood stage based on how the snowpack at upper elevations will respond to the incoming rain. Ward Creek below Lake Connell Dam is currently experiencing minor flooding. Otherwise, current forecast reflects these rivers staying within their banks, however, uncertainty in snowpack depth, temperature, and runoff potential could lead to minor flooding. This combination of weather hazards could lead to possible isolated landslides along steep slopes.
An atmospheric river with multiple surges of moisture has moved into the southern panhandle and will continue through Sunday evening. Heavy rain rates for Ketchikan, Metlakatla, and Prince of Wales Island are expected to continue into Sunday evening, with around a 40-60% chance for 3 hour rates exceeding 0.4 inches. High winds continue for the southern panhandle. The southern panhandle could see 1.0 to 2.0 additional inches of rainfall through late Sunday night. * WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...The following areas, Prince of Wales, Eastern Gulf Coast, 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, Hyder, And Metlakatla. * WHEN...Through Monday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, other low-lying areas and flood-prone locations. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - Around 3.5 to 7.5 inches of rain has fallen for Prince of Wales, Ketchikan, and Metlakatla and around 2.5 to 4.0 inches has fallen for Petersburg and Wrangell within the last 48 hours. Forecast rainfall amounts for Sunday night are around 1.0 to 2.0 inches for the central and southern panhandle, with locally higher amounts expected at higher terrain. Areas with a pre-existing snowpack, both from recent accumulations as well as the deep, previous snowpack, may have additional runoff. Small streams and rivers were falling, but have risen again today. There is continued uncertainty for exceedence of flood stage based on how the snowpack at upper elevations will respond to the incoming rain. Ward Creek below Lake Connell Dam is currently experiencing minor flooding. Otherwise, current forecast reflects these rivers staying within their banks, however, uncertainty in snowpack depth, temperature, and runoff potential could lead to minor flooding. This combination of weather hazards could lead to possible isolated landslides along steep slopes.
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Flooding may occur in poor drainage areas. Storm drains should be kept clear of debris as much as possible. All residents on or near mountain slopes should be prepared for possible landslides. Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for further information.
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