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Alaska, Juneau Borough and Northern Admiralty Island

Areal Flood Warning

Statement as of 5:22 AM AKDT on July 01, 2016

Expires 12:15 PM EDT on July 02, 2016


... A Flood Warning from a Glacier-dammed lake outburst remains in
effect until 815 am akdt Saturday for Mendenhall Lake and river in
the central Inner Channels...

At 522 am akdt... based on reporting gauges a Glacier-dammed lake
outburst along the Mendenhall Lake and river is continuing. The
added water from the Glacier-dammed lake into the river system will
result in continued river rises through Friday evening. The river is
currently rising at around 2 inches per hour. Estimated suicide
Basin Lake level prior to release indicates that Mendenhall Lake and
river could see similar levels to the 2014 record event of 11.85
feet.

For the Mendenhall lake:
at 522 am akdt the stage was 8.5 feet.
Flood stage is 9.0 feet.
Forecast: 11.6 feet around 10 PM on July 1. Inherent uncertainty in
initial Glacial Lake volume will result in varying crest height and
timing with a chance of exceeding record levels.

Impacts:
at 9.1 feet: water covers West Glacier spur Road between
skaters cabin and West Glacier trailhead... also water will flow into
the Mendenhall Lake campground.
At 10.0 feet: water levels will inundate Mendenhall campground with
up to 3 feet of water covering low areas along with up to 1.5 feet
of water covering West Glacier spur Road. Portions of West Glacier
trail will be impassable.
At 11.0 feet: view drive will be flooded and impassable with
significant flooding to some homes in the area.

Please stay tuned to NOAA Weather Radio or your favorite local
weather news source for updates on this situation.

If you live near or along Mendenhall river system stay alert and be
prepared to take action.

The cold water temperatures can increase the threat of hypothermia
and lower the time required to cause hypothermia.

Precautionary/preparedness actions...

A Flood Warning means that flooding is imminent or occurring. All
interested parties should take necessary precautions immediately.


Lat... Lon 5850 13437 5843 13433 5835 13452 5834 13462
      5841 13465 5853 13455


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Weather Severe Map
Alabama - Air Quality Alert
Alaska - Areal Flood Warning , Special Statement , Record Report , Public Information Statement
Arizona - Areal Flood Warning , Air Quality Alert
California - Beach Hazard Statement , Public Information Statement
Colorado - Flash Flood Watch , Public Information Statement
Connecticut - Special Statement
Hawaii - Wind Advisory
Illinois - Flash Flood Watch , Beach Hazard Statement , Special Statement
Indiana - Beach Hazard Statement
Iowa - Public Information Statement
Kansas - Flash Flood Watch , Record Report , Public Information Statement
Kentucky - Public Information Statement
Louisiana - Flood Warning
Maryland - Special Statement , Public Information Statement
Massachusetts - Special Statement
Michigan - Beach Hazard Statement
Minnesota - Public Information Statement
Missouri - Flash Flood Watch
Montana - Record Report
Nebraska - Record Report , Public Information Statement
New York - Beach Hazard Statement
North Carolina - Special Statement
Ohio - Public Information Statement
Oklahoma - Flash Flood Warning , Areal Flood Advisory
Oregon - Public Information Statement
Pennsylvania - Public Information Statement
Rhode Island - Special Statement
South Carolina - Coastal Flood Advisory
Texas - Flood Warning , Special Statement , Special Statement, Air Quality Alert , Air Quality Alert
Utah - Flash Flood Watch
Washington - Public Information Statement
West Virginia - Public Information Statement
Wisconsin - Beach Hazard Statement , Public Information Statement
Wyoming - Record Report

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