gpt-6-astra Analysis · Jul 21, 2026
Unsafe
HIGH RISK
gpt-6-astra
82% confidence
Summary
Driving on July 21 carries high risk from thunderstorms, heavy rainfall and possible flash flooding, particularly during the afternoon and evening. Early morning offers the lowest forecast precipitation risk; no evening period can be confidently considered safe.
Hourly Forecast
7 AM 19%
5 mph
8 AM 58%
8 mph
9 AM 60%
9 mph
10 AM 60%
10 mph
11 AM 75%
12 mph
12 PM 62%
10 mph
1 PM 75%
10 mph
2 PM 53%
9 mph
3 PM 50%
9 mph
4 PM 54%
9 mph
5 PM 76%
9 mph
6 PM 84%
8 mph
7 PM 98%
8 mph
8 PM 89%
8 mph
9 PM 90%
8 mph
10 PM 68%
8 mph
11 PM 60%
8 mph
Key Factors
- 01 The Flood Watch describes possible rainfall rates of 2–3 inches per hour and flooding of roads in low-lying and poor-drainage areas.
- 02 The watch headline extends through July 22 at 2:00 AM EDT, but its structured end time is July 21 at 6:00 AM EDT. This inconsistency creates uncertainty about alert validity; the forecasts independently support continued heavy-rain risk.
- 03 Daily forecasts indicate 1–2 inches of rain during the day and another 1–2 inches overnight, with some thunderstorms producing heavy rain.
- 04 The evening's highest precipitation probabilities occur from 5:00–10:00 PM EDT, ranging from 76% to 98%, increasing concern for ponding, hydroplaning and rain-obscured visibility.
- 05 Sustained winds are 5–12 mph and temperatures remain well above freezing. Visibility, storm gusts and actual road flooding are not provided.
Confidence
82%
Recommendation
Postpone nonessential travel, especially during the afternoon and 5:00–10:00 PM EDT. Morning: 7:00–8:00 AM EDT is the preferred window, with a 19% precipitation chance. Evening: 11:00 PM–midnight EDT is relatively less unfavorable, with a 60% precipitation chance, but thunderstorms and lingering flooding remain possible; use it only if necessary and after checking updated warnings and road closures. Slow down, increase following distance and never drive through floodwater.