National Weather Service United States Department of Commerce

Critical Fire Weather for a Large Part of the Central U.S.; Areas of Severe Thunderstorms

Gusty to high winds and low relative humidity will bring elevated to critical fire weather across large parts of the Great Plains and more localized parts of the Great Basin and central Rockies Thursday into Friday. Severe thunderstorms with large hail and damaging wind gusts are possible over the central Plains Thursday into this weekend. Read More >

The Hydrologic Ensemble Forecasting System (HEFS) is a probabilistic forecasting tool currently under development by the National Weather Service (NWS).  The goals of HEFS are to provide hydrologic forecasts including an analysis of “probable outcomes” and to minimize biases in the atmospheric models and in the hydrologic models.

Below is information about HEFS: