gpt-5.5 Analysis · Aug 20, 2026
Unsafe
HIGH RISK
gpt-5.5
86% confidence
Summary
Driving risk is high today due to a Severe Flood Watch from noon through late tonight with multiple rounds of showers and thunderstorms expected. The worst period appears to be afternoon through early evening, especially 2 PM–7 PM, when thunderstorm chances are highest and heavy rainfall could cause flash flooding.
Hourly Forecast
7 AM 1%
3 mph
8 AM 3%
3 mph
9 AM 3%
3 mph
10 AM 9%
3 mph
11 AM 14%
2 mph
12 PM 23%
3 mph
1 PM 32%
5 mph
2 PM 56%
6 mph
3 PM 69%
6 mph
4 PM 80%
6 mph
5 PM 76%
7 mph
6 PM 75%
6 mph
7 PM 57%
7 mph
8 PM 46%
6 mph
9 PM 38%
6 mph
10 PM 27%
5 mph
11 PM 17%
5 mph
Key Factors
- 01 Flood Watch in effect for today with flash flooding possible from excessive rainfall, especially in poor drainage, urban, low-lying, and flood-prone areas.
- 02 Showers and thunderstorms expected after noon, with hourly precipitation chances rising to 56–80% from 2 PM–6 PM and remaining elevated into the evening.
- 03 Forecast rainfall totals of 1–2 inches are possible during the day and another 1–2 inches tonight; alert notes localized 3–5 inches and rainfall rates of 1–3 inches per hour are possible.
- 04 Evening driving remains risky with showers and thunderstorms likely around 6 PM–8 PM and continued thunderstorm chances through late evening.
- 05 Winds are light at 2–7 mph and temperatures are well above freezing, so wind and ice are not major concerns.
- 06 Visibility values are not provided, so rain-related visibility impacts cannot be quantified; confidence is reduced slightly.
Confidence
86%
Recommendation
Avoid nonessential driving from noon through late evening, especially 2 PM–8 PM. Safer morning slot: 8 AM–11 AM, before storms develop and while precipitation chances are low. Safer evening slot: 10 PM–11 PM, when precipitation chances drop to around 27%, but continue to avoid flooded roads and monitor for warnings.