Weather Alerts for Arco/Mud Lake Desert

Issued by the National Weather Service

River Flood Warning  RIVER FLOOD WARNING   River Flood Warning
ARCO/MUD LAKE DESERT

Areas Affected:
Butte - Custer
Effective: Sun, 6/4 11:40am Updated: Mon, 6/5 6:30am Urgency: Expected
Expires: Mon, 6/5 3:00pm Severity:  Moderate  Certainty: Likely

 
Details:
...The Flood Warning continues for the following rivers in Idaho...
Antelope Creek near Darlington affecting Custer and Butte
Counties.
.Warm temperatures and rainfall will melt ample snowpack and keep
Antelope creek in flood stage. There is around 19 inches of snow
still at the Smiley snotel.
Additional information is available at www.weather.gov/pocatello.
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...
* WHAT...The creek is currently  at minor flood stage and will
oscillate between action stage and minor dependent of rainfall and
diurnal melting.
* WHERE...Antelope Creek near Darlington.
* WHEN...Until further notice.
* IMPACTS...At 6.0 feet, Flooding possible along stretches of
Antelope Creek from the Grouse area downstream to the Big Lost
River.
* ADDITIONAL DETAILS...
- At 11:00 AM MDT Sunday the stage was 6.0 feet.
- Forecast...No forecast is available for this location.
- Flood stage is 6.0 feet.
- Flood History...This crest compares to a previous crest of
5.9 feet on 05/06/2022.
- http://www.weather.gov/safety/flood
&&
Fld   Observed
Location      Stg   Stg   Day/Time
Antelope Creek
Darlington    6.0   6.0   Sun 11 am MD
&&

Information:
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Caution is urged when walking near riverbanks.

River Flood Warning  RIVER FLOOD WARNING   River Flood Warning
ARCO/MUD LAKE DESERT

Areas Affected:
Fremont - Jefferson - Madison
Effective: Sun, 6/4 11:54am Updated: Mon, 6/5 6:30am Urgency: Expected
Expires: Mon, 6/5 3:00pm Severity:  Moderate  Certainty: Likely

 
Details:
...The Flood Warning continues for the following rivers in Idaho...
Henrys Fork near Rexburg affecting Madison, Jefferson and Fremont
Counties.
Additional information is available at www.weather.gov/pocatello.
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...
* WHAT...Minor flooding is possible.
* WHERE...Henrys Fork near Rexburg.
* WHEN...Until further notice.
* IMPACTS...At 9.5 feet, Minor flooding of farmland near the river
will occur between the confluence of the Snake River and upstream
to near St. Anthony. Lower Beaver Dick Park is under water and
some picnic shelters are inaccessible. Portions of Warm Slough
Access will be under water.
* ADDITIONAL DETAILS...
- At 11:15 AM MDT Sunday the stage was 9.1 feet.
- Forecast...The river is forecast to slowly drop below action
stage by tomorrow and then gradually increase later this week
going back into action stage and then approach flood stage.
- Flood stage is 9.5 feet.
- Flood History...This crest compares to a previous crest of
9.3 feet on 04/28/2012.
- http://www.weather.gov/safety/flood
&&
Fld   Observed           Forecasts (12 pm MDT)
Location   Stg   Stg   Day/Time     Mon   Tue   Wed
Henrys Fork
Rexburg    9.5   9.1   Sun 11 am MD 9.0   8.9   8.7
&&

Information:
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Caution is urged when walking near riverbanks.

Flash Flood Watch  FLASH FLOOD WATCH   Flash Flood Watch
ARCO/MUD LAKE DESERT

Areas Affected:
Blackfoot Mountains - Marsh and Arbon Highlands
Effective: Sat, 6/3 2:09pm Updated: Mon, 6/5 6:30am Urgency: Expected
Expires: Mon, 6/5 3:00pm Severity:  Severe  Certainty: Possible

 
Details:
...FLASH FLOOD WATCH FOR THE POTENTIAL FAILURE OF PORTNEUF DAM
SPILLWAY ON CHESTERFIELD RESERVOIR ON THE PORTNEUF RIVER REMAINS IN
EFFECT THROUGH MONDAY AFTERNOON...
* WHAT...Flash Flooding caused by a potential spillway failure is
possible at the Portneuf Dam on Chesterfield Reservoir.
* WHERE...A portion of southeast Idaho, including along the Portneuf
River downstream of Chesterfield Reservoir thorugh Pebble and
along Old Highway 30 south to Lava Hot Springs and downstream to
McCammon.
* WHEN...Through Monday afternoon.
* IMPACTS...Failure of the spillway may result in flash flooding of
low-lying areas below the dam, including areas that are already
experiencing flooding along the Portneuf River.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood

Information:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued. PLAN NOW so you will know
what to do in an emergency.
Officials remain on site closely monitoring the situation. Please
follow Caribou County Sheriffs Office on social media and consider
signing up for Caribou County Alert Sense for the latest information.

CoCoRaHS (Community Collaborative Rain, Hail and Snow Network) Station Number: ID-GM-5 Live Lightning Map - USA Boise Skywarn Spotter ID: DO21 AlertID Northwestern Weather Network Southwestern Weather Network

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