Weather Alerts for Lower Snake River Plain

Issued by the National Weather Service

Flood Warning  FLOOD WARNING   Flood Warning
LOWER SNAKE RIVER PLAIN

Areas Affected:
Bannock, ID
Effective: Thu, 4/25 2:22pm Updated: Thu, 4/25 5:55pm Urgency: Immediate
Expires: Fri, 4/26 3:00pm Severity:  Severe  Certainty: Observed

 
Details:
...The Flood Warning continues for the following rivers in Idaho...

Portneuf River at Topaz affecting Bannock County.

* WHAT...Minor flooding is occurring and minor flooding is forecast.
This approaches the flood of record.

* WHERE...Portneuf River at Topaz.

* WHEN...Until further notice.

* IMPACTS...At 4.0 feet, Lowland and crop field flooding possible
from Pebble Creek to Inkom.

* ADDITIONAL DETAILS...
- At 1:15 PM MDT Thursday the stage was 4.2 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 1:15 PM MDT Thursday was 4.3 feet.
- Forecast...The river will fall to 4.2 feet Saturday morning.
It will then rise to 4.4 feet Sunday evening. It will fall to
4.2 feet Thursday, May 02. It will then rise to 4.3 feet
Saturday, May 04. It will fall to 4.2 feet Sunday, May 05
then rise again.
- Flood stage is 4.0 feet.
- Flood History...This crest compares to a previous crest of
4.5 feet on 02/22/2017.
- http://www.weather.gov/safety/flood

Information:
Caution is urged when walking near riverbanks.

Motorists should not attempt to drive around barricades or drive
cars through flooded areas.

Additional information is available at www.weather.gov/pocatello.

Flood Warning  FLOOD WARNING   Flood Warning
LOWER SNAKE RIVER PLAIN

Areas Affected:
Bannock, ID
Effective: Thu, 4/25 2:20pm Updated: Thu, 4/25 5:55pm Urgency: Immediate
Expires: Fri, 4/26 3:00pm Severity:  Severe  Certainty: Observed

 
Details:
...The Flood Warning continues for the following rivers in Idaho...

Portneuf River at Pocatello affecting Bannock County.

* WHAT...Minor flooding is occurring and moderate flooding is
forecast for later today.

* WHERE...Portneuf River at Pocatello.

* WHEN...Until further notice.

* IMPACTS...At 8.5 feet, Sections of Sacajawea Park will be under
water and the trail is usually closed at this level. Marsh Creek
near Inkom may also be over its banks.
At 9.2 feet, Flooding of low lying agricultural land and pasture
will occur in the Inkom and Blackrock area. Lowland flooding is
likely along sections of the river between Portneuf Gap and the
Cheyenne Avenue Bridge in Pocatello.
At 9.4 feet, Water will encroach around sitting benches near the
river at the Pacific Recycling Trailhead.
At 10.0 feet, Significant flooding of agricultural land will occur
from the Inkom and Blackrock area. Lowland flooding will occur
along sections of the river in Pocatello from Portneuf Gap to the
Cheyenne Avenue Bridge and downstream of the concrete channel
beginning at Sacajawea Park.


* ADDITIONAL DETAILS...
- At 1:45 PM MDT Thursday the stage was 10.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 1:45 PM MDT Thursday was 10.0 feet.
- Forecast...The river is expected to rise to a crest of 11.0
feet Sunday morning.
- Flood stage is 8.5 feet.
- Flood History...This crest compares to a previous crest of
11.1 feet on 02/01/1911.
- http://www.weather.gov/safety/flood

Information:
Caution is urged when walking near riverbanks.

Motorists should not attempt to drive around barricades or drive
cars through flooded areas.

Additional information is available at www.weather.gov/pocatello.

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


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