gpt-5.5 Analysis · Jul 21, 2026
Unsafe
HIGH RISK
gpt-5.5
86% confidence
Summary
Driving conditions are hazardous on 2026-07-21 due to widespread showers and thunderstorms with heavy rain likely, especially this afternoon and evening. A Severe Flood Watch is in effect through late tonight, with flash flooding possible in poor drainage, urban, and low-lying areas.
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 Flood Watch in effect through late tonight, with flash flooding possible from excessive rainfall.
- 02 Showers and thunderstorms are likely or ongoing for most of the day, with the highest precipitation chances from late afternoon through evening, including 98% around 7–8 PM.
- 03 Some storms could produce heavy rain; the alert notes torrential rainfall rates of 2 to 3 inches per hour are possible.
- 04 Daily forecast indicates 1 to 2 inches of rain possible during the day and another 1 to 2 inches tonight.
- 05 Visibility data is not provided, but heavy rain and thunderstorms may reduce visibility and increase hydroplaning risk.
- 06 Winds are not a major hazard, generally 5 to 12 mph during the day and around 8 mph tonight.
Confidence
86%
Recommendation
Avoid nonessential driving today, especially during the worst period from about 1 PM through midnight, with particular caution from 5 PM to 10 PM. If travel is necessary, the relatively safer morning window is 7 AM to 8 AM before storms become more likely, and the least-bad evening option is after 10 PM, though thunderstorms and flood risk remain; never drive through flooded roads.