Weather Alerts for Lower Kuskokwim Valley

Issued by the National Weather Service

       Flood Advisory              Flood Advisory      

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
LOWER KUSKOKWIM VALLEY

Areas Affected:
Matanuska Valley
Effective: Sat, 5/21 4:18pm Updated: Sat, 5/21 6:10pm Urgency: Expected
Expires: Sat, 5/21 10:00pm Severity:  Severe  Certainty: Likely

 
Details:
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM AKDT THIS
EVENING FOR HOT DRY AND WINDY CONDITIONS FOR THE MATANUSKA VALLEY...
* Winds...Southeast winds 10 to 20 mph with gusts up to 30 mph.
* TIMING...Until 10 PM this evening.
* Relative Humidity...As low as 13 percent.
* Temperatures...68 to 75 degrees.
* IMPACTS...Rapid ignition, growth and spread of fires will be
possible.
* ADDITIONAL DETAILS...Knik River winds are expected to remain
gusty out of the southeast through this evening with low min RH
values. Winds will subside late this evening with some RH
recovery overnight.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A red flag warning means that critical fire weather conditions
are imminent or occurring now, or will shortly. It is directed
toward fire agencies, and through them to the public.

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
LOWER KUSKOKWIM VALLEY

Areas Affected:
Copper River Basin
Effective: Sat, 5/21 4:18pm Updated: Sat, 5/21 6:10pm Urgency: Expected
Expires: Sat, 5/21 10:00pm Severity:  Severe  Certainty: Likely

 
Details:
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM AKDT THIS
EVENING FOR HOT DRY AND WINDY CONDITIONS FOR THE COPPER RIVER
BASIN...
* Winds...South-Southeast winds 10 to 20 mph with gusts up to 30 mph.
* TIMING...Until 10 PM this evening.
* Relative Humidity...As low as 15 percent.
* Temperatures...66 to 71 degrees.
* IMPACTS...Rapid ignition, growth and spread of fires will be
possible.
* ADDITIONAL DETAILS...The strongest sustained winds, gusts, and
lowest relative humidity values are expected along the
Richardson and Edgerton Highways, including along the Copper
River. Winds subside late this evening with some RH recovery
overnight.

Information:
A red flag warning means that critical fire weather conditions
are imminent or occurring now, or will shortly. It is directed
toward fire agencies, and through them to the public.

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
LOWER KUSKOKWIM VALLEY

Areas Affected:
Western Kenai Peninsula
Effective: Sat, 5/21 4:18pm Updated: Sat, 5/21 6:10pm Urgency: Expected
Expires: Sat, 5/21 10:00pm Severity:  Severe  Certainty: Likely

 
Details:
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM AKDT THIS
EVENING FOR HOT DRY AND WINDY CONDITIONS FOR NORTH OF CLAM GULCH...
* Winds...East winds 10 to 20 mph with gusts up to 30 mph.
* Where...Western Kenai Peninsula north of Clam Gulch.
* TIMING...Noon today until 10 PM this evening.
* Relative Humidity...As low as 12 percent.
* Temperatures...66 to 73 degrees.
* IMPACTS...Rapid ignition, growth and spread of fires will be
possible.
* ADDITIONAL DETAILS...Winds are expected to remain gusty out of
the east-southeast through this evening with low min RH values.
Winds will subside late evening with good RH recovery
overnight.

Information:
A red flag warning means that critical fire weather conditions
are imminent or occurring now, or will shortly. It is directed
toward fire agencies, and through them to the public.

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
LOWER KUSKOKWIM VALLEY

Areas Affected:
Eastern Alaska Range
Effective: Sat, 5/21 12:29pm Updated: Sat, 5/21 6:10pm Urgency: Expected
Expires: Sat, 5/21 10:00pm Severity:  Severe  Certainty: Likely

 
Details:
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM AKDT THIS
EVENING FOR EASTERN ALASKA RANGE...
* AFFECTED AREA...Along the Richardson Highway north of Donnelly Dome.
* TIMING...Until 10 PM.
* WINDS...South 15 to 25 mph with gusts up to 35 mph.
* HUMIDITY...As low as 15 percent.
* TEMPERATURES..60 to 70.
* IMPACTS...Rapid ignition, growth and spread of fires will be
possible.

Information:
A Red Flag Warning means that conditions are occurring or will
occur which could lead to the development of large and dangerous
fires. It is directed toward fire agencies, and through them, to
the public.
Please advise the appropriate officials or fire crews in the
field of this Red Flag Warning.

Flood Advisory  FLOOD ADVISORY   Flood Advisory
LOWER KUSKOKWIM VALLEY

Areas Affected:
Copper River Basin
Effective: Sat, 5/21 4:18pm Updated: Sat, 5/21 6:10pm Urgency: Expected
Expires: Sat, 5/21 10:00pm Severity: Minor Certainty: Likely

 
Details:
...FLOOD ADVISORY FOR SNOWMELT REMAINS IN EFFECT UNTIL 145 PM AKDT
MONDAY...
* WHAT...Flooding caused by snowmelt continues.
* WHERE...Including the following area, Copper River Basin.
* WHEN...Until 145 PM AKDT Monday.
* IMPACTS...Minor flooding of Moose Creek and low-lying and poor
drainage areas in Glennallen, minor flooding on the Gulkana River,
and flooding of the Lake Louise Road are occurring. Expect rises
and near-bankfull conditions on other rivers and streams in the
area, including the Gakona River.
* ADDITIONAL DETAILS...
- At 439 PM AKDT, river gauge reports indicate rises in water
levels from snowmelt in the advisory area. Minor flooding is
ongoing or expected to begin shortly.
- Above normal temperatures rising into the upper 60s this
weekend in the Copper River Basin will increase higher
elevation snowmelt. Much of the Eastern Alaska Range had a
record amount of snow on the ground for mid-May. Significant
snowmelt runoff this weekend will move down into rivers and
streams in the Northern Copper River Basin, including Moose
Creek in Glennallen, the Gulkana River, and into the Lake
Louise drainage basin.
On Thursday morning, DOT officials reported that Moose Creek
in Glennallen had jumped its bank and split into two channels
and is impacting roads and buildings in the Glennallen area
north of the Glenn Highway.
Water levels are climbing in the Lake Louise Road area due to
increasing snowmelt rates in the area. Water has overtopped
the road and has blocked access to the lodge and the
airstrip.
- For Gulkana River at Sourdough:
At 4:30pm the stage was 11.73 feet.
Flood Stage is 11.0 feet.
Forecast: A crest around 12.1 feet is expected around 4:00am
Monday.
- Http://www.weather.gov/safety/flood

Information:
Stay tuned to further developments by listening to your local radio,
television, or NOAA Weather Radio for further information.
Be aware of your surroundings and do not drive on flooded roads.

Flood Advisory  FLOOD ADVISORY   Flood Advisory
LOWER KUSKOKWIM VALLEY

Areas Affected:
Middle Tanana Valley - Upper Tanana Valley and the Fortymile Country
Effective: Sat, 5/21 4:18pm Updated: Sat, 5/21 6:10pm Urgency: Expected
Expires: Sat, 5/21 10:00pm Severity: Minor Certainty: Likely

 
Details:
...FLOOD ADVISORY FOR SNOWMELT IN EFFECT UNTIL 10 AM AKDT MONDAY...
...REPLACES FLOOD WATCH...
* WHAT...Minor flooding caused by snowmelt is expected.
* WHERE...Chena River from North Pole upstream to its headwaters.
* WHEN...Now through 1000 AM AKDT Monday.
* IMPACTS...Minor flooding in low-lying or flood-prone areas is
imminent or occurring.
* ADDITIONAL DETAILS...
- At 1221 PM AKDT, river gauge reports gradually rising river
levels on the Upper Chena. Impacts may be seen in low-lying
or flood prone areas along Chena Hot Springs Road (CHSR) past
milepost 26, as well as the Steamboat Landing area near North
Pole.
- For the Chena River near CHSR Mile 40 Bridge (UCHA2):
At 12:00pm on Saturday, the stage was 19.07 feet.
Forecast: A crest of 19.86 feet is expected around 10:00am
Sunday.
- For the latest river forecasts go to
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 Chena River upstream of North Pole
stay alert and be prepared to take action.

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

Flood Watch  FLOOD WATCH   Flood Watch
LOWER KUSKOKWIM VALLEY

Areas Affected:
Lower Yukon Valley
Effective: Sat, 5/21 4:18pm Updated: Sat, 5/21 6:10pm Urgency: Future
Expires: Sat, 5/21 10:00pm Severity:  Moderate  Certainty: Possible

 
Details:
...FLOOD WATCH FOR AN ICE JAM NOW IN EFFECT THROUGH SUNDAY EVENING...
* WHAT...Flooding caused by an ice jam continues to be possible.
* WHERE...The Yukon River from Grayling to Russian Mission, and
along the Innoko River from Shageluk to 20 miles upstream.
* WHEN...Through Sunday evening.
* IMPACTS...A large ice jam upriver from Grayling will release a
significant volume of water when the ice jam breaks. Residents in
Grayling, Anvik, Holy Cross, and Russian Mission will see a rapid
rise in water levels when the ice jam releases. Water levels may
rise to bankfull in some locations along with bank to bank runs of
ice moving downriver.
Additionally, the ice jam upriver from Grayling is causing a
significant amount of water to flow over the banks of the Yukon
River and into the Innoko River. River levels on the Innoko will
continue to rise while the ice jam is in place.
* ADDITIONAL DETAILS...
- The NWS is continuing to monitor an jam on the Yukon River
located approximately 7 miles upriver from Grayling. The
Yukon River is flowing overbank upriver from the ice jam for
nearly 70 miles and flooding low lying areas east of the
river, as well as spilling over into the Innoko River east of
the jam. This area of flooded backwater on the Innoko River
is about 15 miles upstream of Shageluk, and is gradually
moving downstream.

Information:
Residents are encouraged to monitor water levels along these areas
of the Yukon and Innoko Rivers, and to move items near the riverbank
to higher ground.



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