IDAHO FALLS — Flooding continues on the Portneuf River for Monday, March 20. The river is now at 9.2 feet causing minor flooding along the banks.
The river is expected to rise to 10.2 feet by next 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 moderate 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. Monday.
Idaho Falls and Rexburg
There is a 50 percent chance the Upper Snake River Plain will see significant rain and some isolated thunderstorms during the day. Highs of 50 to 60 are expected with northeast winds up to 10 mph. Rain and thunderstorms are also possible at night with lows of 34 to 41 degrees and continued wind.
Pocatello and Blackfoot
The Lower Snake River Plain will be cloudy today with scattered rain showers in the morning and isolated thunderstorms in the afternoon. Highs of 53 to 62 are expected with east winds of 10 mph. The chance for rain and thunderstorms continues into the night with lows of 35 to 42 degrees and north winds of 10 mph.
St. Anthony, Ashton, Island Park, Driggs, and Victor
The Upper Valley and Teton Valley will see scattered rain showers and numerous snow showers in the morning. Widespread rain showers and isolated thunderstorms are expected in the afternoon with highs of 46 to 54 degrees. Up to 2 inches of snow is possible. The chance for scattered rain showers continues at night with lows of 31 to 38 degrees.
Arco, Challis, and Mackay
Expect scattered rain and snow showers in the morning, which will increase in the afternoon. Snow accumulation of up to 2 inches is possible above 8,000 feet. Temperatures will reach between 46 to 56 degrees during the day. At night it will be mostly cloudy with scattered rain and snow showers and lows of 31 to 38 degrees.
Henry, Soda Springs, Downey, and Lava Hot Springs
The Caribou Highlands will be mostly cloudy today with scattered rain showers in the morning and isolated thunderstorms in the afternoon. Highs of 52 to 62 are expected. It’ll be mostly cloudy at night with some isolated rain showers and thunderstorms. Lows of 32 to 40 are expected.
Danica Lawrence, KSTU
Nate Eaton, EastIdahoNews.com
Bill Schiess, EastIdahoNews.com columnist