The National Weather Service Storm Prediction Center issued fire weather outlooks on June 27, 2026, to identify specific areas across the continental United States where current fuel conditions and forecasted weather create a significant threat for wildfire ignition or spread.
Purpose of fire weather outlooks
According to data from Drought.gov, these outlooks are produced by the National Weather Service Storm Prediction Center to delineate regions where pre-existing fuel conditions, when combined with forecasted weather patterns, result in heightened wildfire risks. The product is specifically designed for use by the National Weather Service, as well as various federal, state, and local government agencies.
Understanding the 1-day forecast format
The 1-day fire weather outlook utilizes a categorical forecast that graphically depicts risk areas across the continental United States, supplemented by a text narrative to provide detailed context for potential hazards.
Defining specific risk severity categories
The National Weather Service identifies several specific designations used to communicate the severity of fire weather risks. These categories include elevated, critical, and extremely critical conditions, which are determined by forecasts for temperature, wind speed, and relative humidity.
Risks from dry thunderstorm activity
Additionally, the Storm Prediction Center issues forecasts for dry thunderstorm activity. These include both isolated dry thunderstorms and scattered (critical) dry thunderstorms. Both designations indicate a heightened risk of fire ignition caused by cloud-to-ground lightning, provided that a dry fuel bed is present in the area.
Impact of drought on wildfire
The relationship between drought and wildfire remains a primary focus of hazard planning. Drought conditions can cause fuels such as grasses and trees to dry out, making them more flammable and increasing the probability of both fire ignition and the rate at which a fire spreads.
Factors influencing large-scale wildfire frequency
According to the National Weather Service, several interacting factors influence the frequency of large-scale wildfires. These include temperature, soil moisture, humidity, wind speed, and the availability of vegetation or fuel.
The National Weather Service emphasizes that extreme weather events can interact or cascade, meaning one disaster event can trigger or change the probability of another. For instance, drought conditions often accompany extreme heat and can increase the likelihood of large-scale wildfires.
By incorporating drought data into multi-hazard planning, communities are able to consolidate resources and develop coordinated responses before a disaster occurs.
