An extremely critical fire weather danger is poised to impact the Four Corners region, encompassing eastern Utah, western Colorado, northeast Arizona, and northwest New Mexico. This heightened risk comes as several wildfires continue to burn across the western United States. Six states are currently under Red Flag Warnings for dangerous fire weather conditions, some of which are expected to persist through Sunday.
The current wildfire situation includes the Cottonwood Fire in Utah, which has consumed over 71,000 acres and remains uncontained. The Iron Fire has burned more than 40,000 acres and is 38% contained, while the Cherry Fire, a combination of two previous fires, has burned an estimated 20,000 acres and is also 0% contained.
The extreme risk area for Saturday is experiencing sustained winds of 25 to 35 mph with gusts up to 55 mph, coupled with relative humidity levels dipping into the single digits. These conditions, combined with incredibly dry vegetation, are creating a tinderbox environment conducive to rapid fire spread and extreme fire behavior. Existing wildfires could see significant growth, and new fires may ignite and spread quickly.
This critical fire weather develops after many western states, including Utah, recorded their lowest snowpack levels on record this past winter, leading to extreme drought conditions that further intensify the fire danger.
Elsewhere in the country, severe thunderstorms and flash flooding remain a concern. Heavy rain moved through parts of southern Kansas and northern Oklahoma on Saturday morning, prompting Flood Watches. Similar watches extend across areas including southeast Missouri, northeast Arkansas, West Virginia, and southern Ohio, with the potential for heavy rainfall continuing into Sunday.
Two main areas are facing severe weather threats: North Carolina, with a level 2 of 5 risk for damaging winds, and the northern High Plains, which has an enhanced risk of severe storms. The latter includes parts of west-central North Dakota, eastern Montana, and northwest South Dakota, with storms potentially producing damaging winds, large hail, and isolated tornadoes. A lesser threat of severe storms also extends into parts of Montana, the Dakotas, and western Nebraska.
Looking ahead, a significant heat wave is forecast to build in the central U.S. over the weekend and expand across the Midwest by early next week. Millions are expected to experience dangerously high temperatures, with heat index values potentially reaching the triple digits in many areas. By Monday, widespread highs in the 90s are predicted for the Midwest, with temperatures in the upper 90s expected in cities like Minneapolis. Chicago and Detroit are forecast to reach the mid-to-upper 90s by Tuesday and Wednesday. The East Coast, particularly along the I-95 corridor from Washington D.C. to New York, is also bracing for a heat wave beginning Tuesday, with temperatures remaining at or above 90 degrees through at least midweek. In contrast, the western U.S. is expected to see below-average temperatures persist through at least the first half of next week.