# Persistent heat waves and weather advisories in US

> Live situation record from CLSTR: https://clstr.news/situations/us-central-severe-weather-threat
> Updated: 2026-09-04T16:00:33.000Z. Sources: 58. Developments: 23.

By mid-August, extreme heat and high humidity returned to Alabama. On August 11, the National Weather Service in Birmingham issued a Heat Advisory for August 12, with heat index values projected between 101 and 107 degrees in counties such as Tuscaloosa, Lamar, and Pickens. The Alabama Department of Public Health issued warnings regarding heat-related illnesses, including heat exhaustion and heat stroke, noting that heat stroke is a medical emergency that can cause body temperatures to rise to 106 degrees or higher within minutes. As the heat wave intensified, the National Weather Service issued advisories for much of the state, forecasting rising temperatures from August 14 through August 17. High temperatures were expected to reach triple digits in areas including Demopolis, Fayette, Huntsville, Jasper, and Tuscaloosa. Heat indices were projected to spike, with some areas potentially reaching 113 degrees. By August 16, the National Weather Service in Birmingham upgraded the situation, issuing an extreme heat warning in effect through 9 p.m. on Monday, August 17, warning that such long-duration heat with little overnight relief can be deadly. In response, the City of Birmingham activated multiple cooling stations across every quadrant of the city, including library branches and community organizations like Faith Chapel Care Center and One Roof. As of August 19, heat advisories remained in effect for parts of Alabama and the North Escambia area, with heat indices potentially climbing above 105 to 110 degrees. By late August, the National Weather Service in Birmingham warned of “dangerous heat” throughout the week, with West Alabama expected to experience “feels-like” temperatures between 99 and 104 degrees. In early September, hot and humid conditions persisted in Alabama, with heat indices projected to range between 105 and 109 degrees through the end of the week.

## Claims

- Heat‑index values near 110‑115 °F are forecast across the Midwest, South and Gulf‑Coast states through early next week. (corroborated by 3 sources)
- The National Weather Service issued extreme heat warnings for counties in Missouri and Kansas with heat‑index values up to 116 °F. (corroborated by 2 sources)
- The National Weather Service warned that overnight low temperatures in the Midwest remain in the upper 70s, limiting recovery from heat exposure. (corroborated by 2 sources)
- A cold front is forecast to move through the affected regions by Tuesday, bringing cooler temperatures and ending the extreme‑heat warnings. (corroborated by 2 sources)
- An extreme heat warning in the St. Louis metropolitan area included heat‑index values up to 110 °F. (corroborated by 2 sources)
- Heat‑related illnesses increase significantly during extreme heat and high humidity events. (corroborated by 2 sources)
- A heat dome trapping hot air over the central United States is expected to keep temperatures elevated for several days. (corroborated by 2 sources)
- Heat‑index values up to 116 °F were reported in northern Missouri and parts of Kansas. (corroborated by 2 sources)
- More than 100 million people across the central United States are under heat advisories or extreme‑heat warnings. (corroborated by 2 sources)
- Overnight low temperatures often remain in the upper 70s, limiting recovery from daytime heat. (corroborated by 2 sources)
- Heat‑related illnesses increase significantly during extreme heat events. (corroborated by 2 sources)
- An Extreme Heat Warning issued on July 27 covered northwest Arizona, southeast California and southern Nevada with temperatures expected between 108 °F and 120 °F. (single source)

## Timeline

### 2026-09-04: Alabama faces extreme heat with high indices and rising energy demand

Alabama faces extreme heat with indices near 110 degrees, prompting public health warnings and rising energy demands as residents manage heat-related illnesses and increased cooling costs.

3 sources. https://clstr.news/cluster/alabama-faces-extreme-heat-with-high-indices-and-rising-energy-demand

### 2026-09-02: Alabama faces extreme heat and mosquito disease risks

Alabama faces a dual threat this Labor Day weekend with dangerous heat index values exceeding 105 and increased mosquito-borne disease risks, including West Nile virus.

2 sources. https://clstr.news/cluster/alabama-faces-extreme-heat-and-mosquito-disease-risks

### 2026-09-01: Heat wave impacts Alabama as Wake Forest issues campus updates

Alabama faces a heat wave with indices reaching 109 degrees, while Wake Forest University issues graduation deadlines and campus safety updates.

2 sources. https://clstr.news/cluster/heat-wave-impacts-alabama-as-wake-forest-issues-campus-updates

### 2026-08-31: Extreme heat warnings issued across Alabama and Pennsylvania

Extreme heat is impacting parts of the US, with dangerous “feels-like” temperatures in Alabama and a code red heat advisory issued for Allegheny County, Pennsylvania.

2 sources. https://clstr.news/cluster/extreme-heat-warnings-issued-across-alabama-and-pennsylvania

### 2026-08-19: Alabama and North Escambia face heat advisory and storm risks

Heat advisories are in effect for Alabama and North Escambia, with heat index values expected to reach between 105 and 110 degrees alongside potential afternoon thunderstorms.

2 sources. https://clstr.news/cluster/alabama-and-north-escambia-face-heat-advisory-and-storm-risks

### 2026-08-17: Birmingham activates cooling stations amid extreme heat

Birmingham has activated cooling stations across the city, including libraries and recreation centers, to protect residents from extreme heat and life-threatening temperatures.

2 sources. https://clstr.news/cluster/birmingham-activates-cooling-stations-amid-extreme-heat

### 2026-08-16: Alabama faces extreme heat warnings and dangerous temperatures

Alabama is under extreme heat warnings with heat index values potentially reaching 113 °F. Officials warn of deadly conditions for those without adequate cooling or hydration.

3 sources. https://clstr.news/cluster/alabama-faces-extreme-heat-warnings-and-dangerous-temperatures

### 2026-08-13: Alabama faces intense heat wave with triple-digit temperatures

Alabama faces an intense heat wave with temperatures expected to reach 100 degrees and heat indices climbing as high as 113 degrees through Monday.

2 sources. https://clstr.news/cluster/alabama-faces-dangerous-heat-wave-with-triple-digit-heat-indices

### 2026-08-11: Alabama faces extreme heat and heat-related health risks

Extreme heat and high humidity have triggered heat advisories across Alabama, with health officials warning of risks including heat exhaustion and life-threatening heat stroke.

3 sources. https://clstr.news/cluster/alabama-faces-extreme-heat-and-heat-related-health-risks

### 2026-07-30: Alabama Heat Advisory Ends as Cooler Weather Arrives

Alabama's heat advisory stays in place through July 30 with indices up to 112 °F; thunderstorms and possible flooding are forecast, but cooler weekend temps in the mid‑80s are expected, easing the heat risk.

2 sources. https://clstr.news/cluster/alabama-heat-advisory-ends-as-cooler-weather-arrives

### 2026-07-26: U.S. Heat Dome Drives Extreme Temperatures and Widespread Alerts

A heat dome over the U.S. pushes heat‑index values to 116 °F, puts >100 M people under warnings, strains power grids, and triggers health, agricultural and surf‑rescue concerns.

23 sources. https://clstr.news/cluster/alabama-gulf-coast-heat-wave-triggers-extreme-heat-warnings

### 2026-07-22: US Heat Advisories Spur Cooling Stations and Safety Alerts

Heat advisories in West Alabama and Santa Barbara County call for cooling stations, limit outdoor activity, and warn vulnerable groups of heat‑related illness risks.

2 sources. https://clstr.news/cluster/us-heat-advisories-spur-cooling-stations-and-safety-alerts

### 2026-07-16: Alabama and North Escambia Face Heat Wave and Scattered Storms

Alabama and North Escambia see low‑mid‑90°F highs, heat indexes over 100°F, and scattered thunderstorms through the weekend.

4 sources. https://clstr.news/cluster/alabama-and-north-escambia-face-heat-wave-and-scattered-storms

### 2026-07-06: Southern US heat wave drives temps above 100°F in Alabama and North Carolina

A Southern US heat wave brings temps above 100 °F in Alabama and NC; experts urge steady thermostats, proper AC maintenance, and energy‑saving tips.

6 sources. https://clstr.news/cluster/southern-us-heat-wave-drives-temps-above-100f-in-alabama-and-north-carolina

### 2026-07-01: Alabama Heat Advisory Extended Through Friday as Temperatures Near 90°F

Alabama extends its heat advisory through Friday as heat indices hit 114, with scattered thunderstorms expected; officials urge hydration, indoor shelter, and checking on vulnerable neighbors.

2 sources. https://clstr.news/cluster/alabama-heat-advisory-extended-through-friday-as-temperatures-near-90f

### 2026-06-28: Heat Waves and Flood Alerts Issued Across Several US States

Heat warnings hit Tennessee and Nebraska while flood advisories affect North Carolina and Illinois, prompting safety alerts and stranded‑vehicle rescues.

6 sources. https://clstr.news/cluster/tennessee-issues-heat-advisory-for-middle-region-and-lifts-flood-advisory-in-east

### 2026-06-27: Heat wave drives heat advisories across Alabama and Memphis

Heat advisories in Alabama and Memphis predict temperatures in the 90s with heat indices over 100°F, urging residents to stay hydrated and protect vulnerable groups.

4 sources. https://clstr.news/cluster/heat-wave-drives-heat-advisories-across-alabama-and-memphis

### 2026-06-15: Alabama faces heavy rain and flood risk as up to 7 inches forecast

Alabama is under a heavy rain outlook with 3‑7 inches expected, raising flood warnings through Friday.

2 sources. https://clstr.news/cluster/alabama-faces-heavy-rain-and-flood-risk-as-up-to-7-inches-forecast

### 2026-06-14: Severe Thunderstorms Sweep Middle Tennessee, Prompting Wind and Hail Warnings

Severe thunderstorms hit Middle Tennessee with winds up to 40 mph and hail, prompting warnings; Clarksville area faces showers, heat, then more storms later in the week.

3 sources. https://clstr.news/cluster/severe-thunderstorms-sweep-middle-tennessee-prompting-wind-and-hail-warnings

### 2026-06-09: Tennessee Flash Floods Prompt Warnings and Heat Advisory

Severe thunderstorms on June 9 caused flash‑flood warnings across West Tennessee and a brief heat advisory, while a moderate flood watch remains for Middle Tennessee.

2 sources. https://clstr.news/cluster/tennessee-flash-floods-prompt-warnings-and-heat-advisory

### 2026-06-08: Heavy Rain Triggers Flood Watch Across Alabama

Heavy rain across north and central Alabama has prompted flood watches, swollen runoff at Noccalula Falls, and a specific warning for Tuscaloosa County.

2 sources. https://clstr.news/cluster/heavy-rain-triggers-flood-watch-across-alabama

### 2026-05-31: Severe Thunderstorm Watches Hit Alabama, Mississippi and Arkansas

Severe thunderstorm watches and a Cache River flood warning affect Alabama, Mississippi, Arkansas, and the wider Mid‑South on June 1, 2026, with damaging winds, large hail and flash‑flood threats.

8 sources. https://clstr.news/cluster/severe-storms-and-tornado-risk-loom-over-nebraska-and-south-dakota

### 2026-05-03: Alabama and Midwest US face heightened severe weather risk

Alabama slight risk and the Midwest face strong winds, hail, tornadoes and flood rain this week.

4 sources. https://clstr.news/cluster/alabama-and-midwest-us-face-heightened-severe-weather-risk

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Cite as: Persistent heat waves and weather advisories in US. CLSTR, https://clstr.news/situations/us-central-severe-weather-threat