gpt-5.4 Analysis · Jul 4, 2026
Unsafe
HIGH RISK
gpt-5.4
89% confidence
Summary
Driving is most favorable this morning, but conditions become significantly riskier this afternoon and evening due to extreme heat and increasing chances of thunderstorms, some with heavy rain. The worst driving window is roughly 2 PM through late evening, especially after 8 PM.
Hourly Forecast
7 AM 2%
8 mph
8 AM 3%
9 mph
9 AM 4%
10 mph
10 AM 5%
12 mph
11 AM 6%
12 mph
12 PM 5%
12 mph
1 PM 3%
10 mph
2 PM 21%
10 mph
3 PM 36%
10 mph
4 PM 42%
10 mph
5 PM 44%
12 mph
6 PM 48%
10 mph
7 PM 50%
6 mph
8 PM 62%
3 mph
9 PM 44%
2 mph
10 PM 65%
2 mph
11 PM 56%
1 mph
Key Factors
- 01 Extreme Heat Warning is in effect until 8:00 PM EDT, with heat index values around 100 to 110 and air temperatures rising into the mid to upper 90s.
- 02 Thunderstorm chances begin after 2:00 PM and increase through the afternoon and evening.
- 03 Some storms could produce heavy rain, which can quickly reduce visibility and create hazardous road conditions.
- 04 Highest precipitation chances occur this evening and tonight, including likely thunderstorms around 8:00 PM to 11:00 PM.
- 05 Wind speeds are modest overall, so the main driving hazards are heat stress and thunderstorms rather than wind.
Confidence
89%
Recommendation
If you must drive, the safer morning slot is 7:00 AM to 10:00 AM EDT before peak heat and storms develop. For the evening, the relatively safer slot is 6:00 PM to 7:00 PM EDT, but use caution since thunderstorm risk is already present and conditions worsen after 8:00 PM; avoid driving from about 2:00 PM through late evening if possible.