A warning is in place for the Detroit region as a second hot spell of July arrives. The heat advisory covers Tuesday afternoon and evening, with temperatures climbing to 90 degrees at the local airport on Monday. This marks the start of a stretch that could see three or more days above 90 degrees, which meteorologists call a heat wave.

The first July heat event in the area happened at the end of June and early July, when heat indices approached 110 degrees under an extreme warning. The current surge will not reach that level, but it still poses a serious risk because the nights stay warm and do not give people enough time to cool down.

During Monday night, skies stay clear with light southwest breezes. Overnight lows stay in the mid‑70s, so houses and streets remain warm. Warm nights raise the chance of heat‑related illness because the body has less time to recover before the next hot day.

Tuesday is expected to be the hottest. By noon, temperatures rise to about 98 degrees and the heat index climbs between 100 and 104. Because of this, a heat advisory is active from noon until 8 p. m. The day starts at 72 degrees in the morning, jumps to 84 by ten a. m. , and peaks near 97 at six p. m. Even after sunset, it stays uncomfortably warm.

What makes a heat advisory different from an extreme warning? An advisory is issued when the heat index reaches 100 degrees or more for at least three hours, or when several hot days and warm nights increase the danger of heat illness. An extreme warning is reserved for heat indices above 105 degrees or for nights that stay around 75 degrees, which can lead to cumulative heat stress. This week’s forecast just misses the extreme threshold but still warrants caution.

Wednesday and Thursday stay hot, with highs in the mid‑90s on Wednesday and lower 90s on Thursday. A light shower might arrive north of the city on Thursday, but most areas stay dry. By Friday, a weakening ridge allows more chances for showers and thunderstorms, which could bring relief before the weekend.

Heat is one of the deadliest weather hazards in the country. If you’re outside, stay hydrated, wear light clothing, and take breaks in shade or air‑conditioned spaces. Avoid hard work during the hottest part of the day, never leave children or pets in a car, and check on vulnerable neighbors. Know the signs of heat exhaustion—confusion, loss of consciousness, or no sweating—and call 911 if you see them.

The weather team will keep monitoring the situation and give updates as conditions change.


# Detroit Heat Advisory – July 2024

**A second hot spell has arrived, bringing a heat advisory for Tuesday afternoon and evening.**

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## Heat Advisory Details

| Time | Temperature (°F) | Heat Index (°F) |
|------|------------------|-----------------|
| Monday, 12 pm | 90 | – |
| Tuesday, noon | 98 | 100–104 |
| Tuesday, 6 pm | 97 | – |

- **Advisory period:** Noon to 8 p.m. Tuesday  
- **Mid‑night lows:** Mid‑70s, keeping streets warm and increasing heat‑related illness risk.  

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## What This Means

- **Heat Advisory**: Issued when the heat index reaches 100 °F or more for at least three hours, or when consecutive hot days and warm nights heighten danger.  
- **Extreme Warning**: Reserved for heat indices above 105 °F or nights around 75 °F that can cause cumulative stress.  
- *This week’s forecast falls just short of the extreme threshold but still warrants caution.*

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## Weekend Outlook

- **Wednesday & Thursday**: Highs in the mid‑90s (Wednesday) and lower 90s (Thursday).  
- **Thursday**: Possible light shower north of the city; most areas remain dry.  
- **Friday**: Weakening ridge may bring showers and thunderstorms—potential relief before the weekend.

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## Safety Tips

- Stay hydrated; drink water regularly.  
- Wear light, breathable clothing and seek shade or air‑conditioned spaces during peak heat.  
- Avoid strenuous activity in the hottest part of the day.  
- Never leave children or pets in a vehicle.  
- Check on vulnerable neighbors and be aware of heat exhaustion signs: confusion, loss of consciousness, or lack of sweating.  
- Call 911 if you suspect heat exhaustion.

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**The weather team will continue monitoring the situation and provide updates as conditions evolve.**



Heat Wave Warning Hits Detroit Area

Heat Advisory Details

What This Means

Actions

Time	Temperature (°F)	Heat Index (°F)
Monday, 12 pm	90	–
Tuesday, noon	98	100–104
Tuesday, 6 pm	97	–