740
WGAK87 PAJK 172023
FLSAJK

Flood Advisory
National Weather Service Juneau AK
1223 PM AKDT Wed Jul 17 2024

.Heavy rain has moved back into the region as the atmospheric river
affects the northern inner channels. This will cause rivers and
small streams to rise and go above minor flood stage through today
and tonight from the rainfall runoff. Most water levels are expected
to be below flood stage by Thursday morning but Mendenhall Lake and
River will lag behind the smaller streams and will not be below
flood stage until Thursday afternoon time frame. There is still no
indication that water is draining from Suicide Basin.

AKZ325-180430-
/O.CON.PAJK.FA.Y.0012.000000T0000Z-240718T1800Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
City and Borough of Juneau AK-
1223 PM AKDT Wed Jul 17 2024

...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 10 AM AKDT THURSDAY...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...Mendenhall Lake and River, Montana Creek and Jordan Creek
  near Areas Around Auke Lake, Montana Creek, Skaters Cabin Road,
  Mendenhall Campground, View Drive And Jordan Creek Mall.

* WHEN...Until 1000 AM AKDT Thursday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
  Some low-water crossings may become impassable. River or stream
  flows are elevated. Soils remain moist and excessive runoff will
  result in minor flooding of rivers, creeks, streams, other
  low-lying areas, and flood-prone locations.

* ADDITIONAL DETAILS...
  - At 1210 PM AKDT, satellite estimates and rain gauge data
    indicate heavy rain across the advisory area. Rapid river
    rises will cause minor flooding, especially near Montana
    Creek, and Jordan Creek. Water levels will rise more slowly
    and cause minor flooding along Mendenhall lake and Auke Lake.
    Between 1 and 1.5 inches of rain have fallen. The expected
    rainfall rate is 0.2 inches in 1 hour. Additional rainfall
    amounts of 1 to 1.75 inches are possible.

  - For Auke Lake near Auke Bay:
    At 11:00am the stage was 32.7 feet.
    Flood Stage is 33.0 feet.

    Impacts:
    At 33.0 feet: Water from the lake will inundate yards of
    homes along Auke Lake.

    At 34.0 feet: Water depths will be near 1.5 feet in yards of
    homes along Auke Lake with some water reaching into homes
    along the northwest side of the lake.


    For Jordan Creek near Juneau:
    At 12:00pm the stage was 9.3 feet.
    Flood Stage is 9.7 feet.
    Forecast: A crest around 10.2 feet is expected around 10:00pm
    Wednesday.
    Water levels will go above minor flood stage Wednesday
    afternoon.
    Water levels will go below minor flood stage Thursday
    morning.

    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.

    At 10.5 feet: There will be some inundation of structures and
    roads near Jordan Creek with more than one foot of water.
    Some residential homes and commercial offices along the creek
    will see significant flooding.


    For Montana Creek at Back Loop Bridge:
    At 11:00am the stage was 13.3 feet.
    Flood Stage is 14.5 feet.
    Forecast: A crest around 15.3 feet is expected around 10:00pm
    Wednesday.
    Water levels will go above minor flood stage Wednesday
    afternoon.
    Water levels will go below minor flood stage early Thursday
    morning.

    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.

    At 15.5 feet: Up to one half foot of water will flow over the
    low water crossing on Montana Creek Road after the community
    gardens. Water will approach and begin to inundate yards of
    residences along the Northwest side of Mendenhall Loop Road.


    For Mendenhall Lake :
    At 11:45am the stage was 6.8 feet.
    Flood Stage is 9.0 feet.
    Forecast: A crest around 9.1 feet is expected around 10:00am
    Thursday.
    Water levels will go above minor flood stage Wednesday night.
    Water levels will go below minor flood stage early Thursday
    afternoon.

    Impacts:
    At 6.7 feet: Nugget Falls trail begins to flood near the
    "causeway" at the end of the trail.

    At 7.7 feet: Nugget Falls trail begins to flood near the
    beginning of the trail. Along the Mendenhall River some
    sections will experience bank erosion resulting in dangerous
    tree fall. These conditions could make floating the river
    more hazardous with the higher water levels.

    At 9.0 feet: Water starts to cover Skaters Cabin Road between
    Skaters Cabin and West Glacier Trailhead, also water will
    flow into the Mendenhall Lake Campground.

    At 9.5 feet: Areas along View Dr will start to flood and
    cause minor flooding of yards. There will be 0.5 feet of
    water over the Skaters Cabin Road between Skaters Cabin and
    West Glacier Trailhead. Campsite 7 will be flooded with water
    starting to flow over the road between campsites 8 and 9 in
    the Mendenhall Campground.

  - The ongoing rains could swamp boats. Mariners should check their
  vessels immediately.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Stay tuned to further developments by listening to your local radio,
television, or NOAA Weather Radio for further information.

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 5845 13462 5844 13455 5843 13453 5843 13452
      5841 13453 5840 13454 5837 13455 5835 13456
      5835 13458 5835 13460 5838 13465


$$

aaron.jacobs