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WGAK69 PAFG 202037
FFAAFG

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Fairbanks AK
1237 PM AKDT Mon May 20 2024

AKZ825-210445-
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/00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yukon Delta Coast-
Including the cities of Emmonak, Alakanuk, Nunam Iqua, Kotlik,
Mountain Village, Hooper Bay, Scammon Bay, and Chevak
1237 PM AKDT Mon May 20 2024

...FLOOD WATCH FOR AN ICE JAM IN EFFECT THROUGH FRIDAY MORNING...

* WHAT...Flooding caused by an ice jam is possible.

* WHERE...The Yukon River from Mountain Village to the Yukon Delta
  Coast.

* WHEN...Through Friday morning.

* IMPACTS...Ice jams may result in flooding from Mountain Village to
  the Yukon Delta Coast. Low lying areas near Mountain Village could
  flood today through Tuesday. Low Lying areas downstream near
  Emmonak, Alakanuk, Nunam Iqua and Kotlik have potential to flood
  late Tuesday night through Friday. If an ice jam forms, water
  could rise rapidly.

* ADDITIONAL DETAILS...
  - The Yukon River broke up to past Mountain Village on Sunday
    May 19. The breakup front will likely reach Emmonak and
    Alakanuk between Tuesday night and Friday, based on historic
    trends. There is potential for flooding in Emmonak, Alakanuk,
    Nunam Iqua and Kotlik as breakup progresses. Though this year
    has mostly been a thermal breakup for the Yukon River, an ice
    jam did form and release May 19 downstream of Pilot Station
    which led to flooding. This run of ice could lead to high
    water downstream. In addition, satellite imagery depicts
    minimal degradation of shorefast ice along the Yukon Delta
    Coast. This may exacerbate the situation as shorefast ice
    could impede the breakup push and lead to backwater in
    communities closest to the coast.

  - Http://www.weather.gov/aprfc

  - 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 the Yukon River on the Yukon Delta
  move valuables to higher ground, stay alert and be prepared to
  take action.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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

&&

$$

AKZ826-210445-
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/00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lower Yukon River-
Including the cities of Russian Mission, Marshall, Pilot Station,
and St Marys
1237 PM AKDT Mon May 20 2024

...FLOOD WATCH FOR AN ICE JAM REMAINS IN EFFECT THROUGH TUESDAY
AFTERNOON...

* WHAT...Flooding caused by an ice jam is possible.

* WHERE...The Yukon River downstream of Pilot Station including near
  St Mary`s and Pitkas Point.

* WHEN...Through Tuesday afternoon.

* IMPACTS...Water levels are high at St. Mary`s and Pitkas Point. If
  another ice jam forms, water could rise further and cause flooding
  in low lying areas.

* ADDITIONAL DETAILS...
  - The ice jam downstream of Pilot Station released around 3:30
    pm Sunday afternoon, and the ice started moving at Mountain
    Village at 4:30 pm Sunday. Water levels at Mountain Village
    went up approximately 5 feet Sunday night. Water levels
    remain high at Mountain Village, St Mary`s and Pitkas Point
    today. If another ice jam forms, the water levels could rise
    and cause flooding of low lying areas.


  - Https://www.weather.gov/aprfc

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Pitkas Point and St. Mary`s residents should continue to monitor
river conditions through Tuesday morning as the ice and water
continue to move downstream. Significant rises in water levels
remain possible. Those living in areas prone to flooding should be
prepared to take action should flooding develop.

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

&&

$$