Nampa Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth and road condition may be unsafe. Additional information is available at https://water.weather.gov/ahps2/ Stay tuned for further updates by listening to NOAA weather radio... or your local radio and TV stations.

Special Weather Statement issued May 14 at 10:57AM MDT by NWS Pocatello ID

At 1056 AM MDT, Doppler radar was tracking a strong thunderstorm 7 miles northwest of Blackfoot Reservoir, moving east at 30 mph. HAZARD...Wind gusts in excess of 45 mph and nickel size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to outdoor objects is possible. Locations impacted include... Wayan, northern Blackfoot Reservoir, Freedom, and Grays Lake.

Flood Advisory issued May 13 at 1:20PM MDT by NWS Pocatello ID

...The Flood Advisory continues for the following rivers in Idaho... Portneuf River at Topaz affecting Bannock County. .Warm temperatures are melting high mountain snowpack and increasing river flows. The stage of the Portneuf in this stretch is still very close to flood stage. * WHAT...Flooding caused by snowmelt continues. * 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 12:15 PM MDT Monday the stage was 3.9 feet. - Forecast...The river is expected to rise to a crest of 4.0 feet tomorrow morning. - Action stage is 3.5 feet. - Flood stage is 4.0 feet. - http://www.weather.gov/safety/flood

Flood Warning issued May 13 at 1:17PM MDT by NWS Pocatello ID

...The Flood Warning continues for the following rivers in Idaho... Portneuf River at Pocatello affecting Bannock County. .Warm temperatures will melt high mountain snowpack and increase river flows. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Portneuf River at Pocatello. * WHEN...Until further notice. * IMPACTS...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. * ADDITIONAL DETAILS... - At 11:45 AM MDT Monday the stage was 9.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:45 AM MDT Monday was 9.2 feet. - Forecast...The river is expected to rise to a crest of 9.2 feet Wednesday morning. - Flood stage is 8.5 feet. - Flood History...This crest compares to a previous crest of 9.3 feet on 04/27/2019. - http://www.weather.gov/safety/flood

Flood Warning issued May 13 at 10:00AM MDT by NWS Pocatello ID

...The Flood Warning continues for the following rivers in Idaho... Blackfoot River near Shelley (Wolverine Canyon) affecting Bingham County. .Snow melt and increased reservoir releases will cause the river flows to become high. The river stage in this stretch of the Blackfoot River is very close to flood stage, with more melting expected. Expect possible minor flooding downstream from the dam. * WHAT...No flooding is currently forecast. * WHERE...Blackfoot River near Shelley (Wolverine Canyon). * WHEN...Until further notice. * IMPACTS...At 8.5 feet, From the mouth of Wolverine Canyon upstream to the Blackfoot Dam, water flooding may be possible. Unimproved campgrounds may have water seeping or ponding in them along with strong flows at river's edge. Flat areas along the river and croplands may have water ponding. * ADDITIONAL DETAILS... - At 9:30 AM MDT Monday the stage was 8.4 feet. - Forecast...No forecast is available for this location. - Flood stage is 8.5 feet. - Flood History...This crest compares to a previous crest of 8.4 feet on 06/05/1983. - http://www.weather.gov/safety/flood

Flood Warning issued May 13 at 9:59AM MDT by NWS Pocatello ID

...The Flood Warning continues for the following rivers in Idaho... Blackfoot River near Blackfoot (Butte Rd-Ft Hall) affecting Bingham County. .Snow melt and increased reservoir releases will cause the river flows to become high. This stretch of the Blackfoot River is very close to flood stage, with the additional snow melt occurring. Expect possible minor flooding downstream from the dam. * WHAT...No flooding is currently forecast. * WHERE...Blackfoot River near Blackfoot (Butte Rd-Ft Hall). * WHEN...Until further notice. * IMPACTS...At 5.5 feet, Nearing bankfull from near Blackfoot downstream to the confluence with the Snake River. * ADDITIONAL DETAILS... - At 9:30 AM MDT Monday the stage was 5.5 feet. - Forecast...No forecast is available for this location. - Flood stage is 5.8 feet. - Flood History...This crest compares to a previous crest of 5.5 feet on 06/12/1984. - http://www.weather.gov/safety/flood