National Weather Service United States Department of Commerce

An Average Flood Potential From Ice Jams and a Below Average Flood Potential From Spring Snowmelt

 

Conditions as of:  February 13, 2025  

 

Area Covered 

This Spring Flood and Water Resource Outlook is for the North Platte Hydrologic Service Area, which covers western and north central Nebraska. The river basins include: the North Platte and South Platte Rivers and the Platte River in western Nebraska, Frenchman Creek and Stinking Water Creek in southwest Nebraska, the Loup and Dismal Rivers in the Sandhills of Nebraska, and portions of the Elkhorn and Niobrara Rivers in north central Nebraska.

Current Flooding

To obtain the latest watches, warnings, statements, and advisories, go to the NWS North Platte National Water Prediction Service

Flood Outlook Summary

An average flood potential is expected from ice jamming. Below normal temperatures in February have resulted in ice covered rivers. Minor ice jamming is occurring along portions of the North Platte River including Lisco, Lewellen, and North Platte. Other rivers including the mainstem Platte River, Niobrara River, Elkhorn River, North Loup River, and Middle Loup River may also experience ice jamming. Below normal temperatures are forecast through February 22nd, with near to slightly above normal temperatures the third week of February.

A below average flood potential is expected from spring snowmelt. It has been a very dry winter so far this season. A recent snowfall event February 11th and 12th brought snow cover ranging from 1 to 3 inches across north central Nebraska, and from 3 to 6 inches across the central Sandhills into central and southwest Nebraska. 

The potential for rainfall induced flash flooding is not quantifiable. This type of flooding is most likely to occur during the later spring and summer months.

Snow Cover and Mountain Snowpack

As of February 13th, 1 to 3 inches of snow cover existed across north central Nebraska, and from 3 to 6 inches across the central Sandhills into central and southwest Nebraska. February, March and April are typically snowy months, so additional snowfall is likely.

The snowpack in the North Platte and South Platte River Basins in Colorado and Wyoming is currently near to slightly below average, with snow water equivalent ranging near 90 percent of average for the North Platte Basin and 97 percent of average for the South Platte Basin. A below average flood potential is expected from mountain snowmelt runoff.

Reservoir Conditions

Normal operations are ongoing at reservoirs along the North Platte River for this time of year. Releases from these dams have been limited through the winter months, with inflows generally coming from melting snow. Because of these operations, reservoir levels have risen through the winter months. The current reservoir storage across Wyoming, as well as Lake McConaughy, are below average for this time of the year.

Soil Conditions

Soil moisture was much below normal across much of western north central Nebraska. According to the U.S. Drought Monitor, abnormally dry to moderate drought conditions remained across  southwest Nebraska, which includes the Frenchman Creek Basin. Severe to extreme drought conditions persisted across the remainder of western and north central Nebraska. Soil temperature sensors indicate 4 inch soil temperatures range from 20 to 30 degrees. Frost depths ranged from 7 to 20 inches.

Calculated Soil Moisture Anomaly
Modeled Snow Moisture from Climate Prediction Center

 

Latest 1 Day
Soil Temperature
Latest 7 Day
Average Soil Temperature
One-day average soil temperatures Seven-day average soil temperatures
Soil Temperatures Data from University of Nebraska Lincoln Crop Watch

 

River and Lake Ice Conditions

Monthly average streamflow was average to above average across the central and northern Sandhills, including the Niobrara, Elkhorn and Loup River Basins. Average to much below average streamflow was indicated across the southeast panhandle and southwest Nebraska, including the Platte River Basin, and Frenchman Creek Basin. Lakes and rivers were currently frozen. 

Monthly Average Streamflow

 

 

Streamflow Mapping provided by the USGS

 

Seasonal Precipitation

Precipitation so far this water year, since October 1, 2024, was much below normal. Precipitation ranged from as little as a half inch to around 4 inches. These values are from 25 percent to around 75 percent of normal across north central and central Nebraska, to 90 to 110 percent of normal across portions of southwest Nebraska. 

Nebraska
Percent of Normal Precipitation since October 1
Nebraska
Precipitation since October 1
Image of Percent of Normal Precipitation for the Water Year Current Climate Summary Map
Precipitation Maps from the High Plains Climate Center

 

Precipitation and Temperature Outlook

Water temperatures in the tropical Pacific Ocean remain slightly below average, with weak La Nina conditions. The outlook indicates a 60 percent chance that neutral conditions may develop March through May. For the late winter and spring months, this weather pattern will typically favor near average temperatures with near to slightly below average precipitation across the Central Plains.


According to the Climate Prediction Center, as of February 13th, the latest 8 to 14 day outlook calls for above average temperatures with below average precipitation. 

8 - 14 Day Temperature Outlook 8 - 14 day Precipitation Outlook

 

The latest 30 day outlook for February calls for near to below average temperatures and below average precipitation.

Temperature Outlook Precipitation Outlook

 

According to the Climate Prediction Center, the latest 90 day outlook for February, March, and April indicates below average temperatures with near to below average precipitation going into this spring. 

Three Month Temperature Outlook Three Month Precipitation Outlook

 

More Outlooks are available at the Climate Prediction Center Temperature and Precipitation Outlooks webpage


 

Questions or Comments

If you have any questions or comments about this spring flood and water resource outlook please contact,

Kenneth Roberg
North Platte HSA Focal Point
National Weather Service
5250 East Lee Bird Drive
North Platte, NE 6910
Telephone 308-532-4936
E-mail kenneth.roberg@noaa.gov