Unsettled Weather in the Southeast and West; Unseasonably Hot in the North-Central U.S.; Coastal Impacts Along the East Coast

Thunderstorms and heavy rainfall may produce isolated flash flooding along the southeast Atlantic coast the next several days. Showers and thunderstorms persist across portions of the Great Basin, Pacific Northwest, and northern Rockies. Unseasonably hot temperatures continue for much of the Plains and Midwest. High surf, dangerous rip currents, and coastal flooding continue along the East Coast. Read More >

Effective August 28, 2019, the National Weather Service (NWS) in North Platte, NE will change the flood category stages for the North Platte River at Lewellen (LEWN1).

All NWS flood warnings, flood statements, flood advisories, flood watches, probability outlooks, and NWS hydrographs on the Advanced Hydrologic Prediction Service (AHPS) will reference the new category levels. This change is part of a recent evaluation of the levels based on high water, flood events, and impacts over the past 10 years.

The new flood categories will be as follows (all values at level above gage zero datum) at the North Platte River at Lewellen:

New Flood Categories	Previous Flood Categories
Action Stage: 7.0 ft	Action Stage: 6.5 ft
Flood Stage: 8.0 ft	Flood Stage: 7.5 ft
Moderate Flood Stage: 9.0 ft	Moderate Flood Stage: 8.5 ft
Major Flood Stage: 10.0 ft	Major Flood Stage: 9.5 ft
Gage zero datum: 3286.992 ft above MSL NAVD88

The National Weather Service welcomes public feedback. If you have any questions or comments on this change, please contact:

Kenneth Roberg
Lead Forecaster/Hydrology Focal Point
(308) 532-4936
kenneth.roberg@noaa.gov

National Weather Service
5250 East Lee Bird Dr
North Platte, NE 69101

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Unsettled Weather in the Southeast and West; Unseasonably Hot in the North-Central U.S.; Coastal Impacts Along the East Coast

Lewellen River Flood Category Changes - Effective August 28, 2019