DAILY FORECAST: Chance of rain, flooding begins on Portneuf river
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IDAHO FALLS — Flooding has begun on the Portneuf River near Pocatello for Sunday, March 19.
The river crested its banks Saturday night and has risen to 8.8 feet causing minor flooding along the banks.
The river is expected to rise to 10.2 feet by Sunday night causing moderate to significant flooding of agricultural land in the Inkom and Blackrock area. Lowland flooding also will occur along sections of the river in Pocatello from the Portnuef Gap to the Cheyenne Avenue Bridge and downstream of the concrete channel beginning at Sacajawea Park.
Flood advisories remain in effect for the following counties: Oneida, Blaine, Bingham, Bear Lake, Caribou and Minidoka.
NWS reports snow melt is causing flooding on U.S. Route 191 north of Malad between Devils Creek Reservoir and Power House Road.
Water has also been reported on State Highway 36 between Interstate 15 and Deep Creek Reservoir.
There is minor flooding of roads and basements in the following communities: Montpelier, Saint Charles, Dingle, Paris, Bloomington, Bern, Ovid, Border Summit, Pegram, Carey, Picabo, Gannett, Fish Haven, Aberdeen, Springfield, Moreland, Pingree, Taber and Sterling.
Flooded fields are being reported in the following counties: Caribou, Bear Lake, Bingham and Oneida.
The following cities also remain under a flood watch until Monday: Burley, Rupert, Heyburn, St. Anthony, Ashton, Island Park, Driggs, Victor, Pocatello, Malad City, Oakley, Rockland, Henry, Soda Springs, Downey, Lava Hot Springs, Preston, Montpelier, Hailey, Ketchum and Bellevue.
No major road closures are being reported as of 8 a.m. Sunday.
Idaho Falls and Rexburg
The Upper Snake River Plain will be party sunny today with isolated rain showers in the morning then scattered showers and thunderstorms in the afternoon. Temperatures will reach between 50 to 60 degrees with southwest winds of around 10 mph that will increase to between 15 to 25 mph in the afternoon. At night there is a 20 percent chance of rain and thunderstorms with lows of 34 to 43 degrees and continued wind.
Pocatello and Blackfoot
Pocatello, Blackfoot, Shelley and Firth will be mostly sunny today with isolated rain showers in the morning and significant cloud cover, scattered showers and thunderstorms in the afternoon. Highs of 53 to 63 are expected with southwest winds of 10 to 15 mph. At night there is a 40 percent chance of rain and thunderstorms with lows of 36 to 43 degrees. Southwest winds of 10 to 15 mph are expected during the night.
St. Anthony, Ashton, Island Park, Driggs, and Victor
The Upper Valley and Teton Valley will be cloudy today with scattered rain showers in the morning and isolated thunderstorms in the afternoon. Highs of 47 to 57 are expected with breezy conditions. At night there is a chance of rain and thunderstorms with lows of 33 to 40 degrees.
Arco, Challis, and Mackay
The Lost River area will be cloudy today with scattered rain and snow showers in the morning and thunderstorms predicted in the afternoon. Highs of 47 to 57 degrees are expected. It will remain cloudy at night with a chance of rain, snow and thunderstorms in the evening. Lows of 32 to 39 degrees are expected.
Henry, Soda Springs, Downey, and Lava Hot Springs
The Caribou Highlands will see cloudy conditions today with scattered rain showers and isolated thunderstorms. Highs of 52 to 62 degrees are expected. It’ll be mostly cloudy at night with a chance of rain and thunderstorms in the evening. Lows of 34 to 42 degrees at night.