gpt-5.5 Analysis · May 20, 2026
Safe
MEDIUM RISK
gpt-5.5
82% confidence
Summary
Driving is generally possible today, but heat and increasing showers/thunderstorms create moderate risk, especially from late afternoon into the evening. The safest conditions are in the morning before storms develop.
Hourly Forecast
7 AM 2%
6 mph
8 AM 2%
8 mph
9 AM 2%
9 mph
10 AM 2%
10 mph
11 AM 4%
10 mph
12 PM 10%
12 mph
1 PM 18%
12 mph
2 PM 29%
12 mph
3 PM 40%
13 mph
4 PM 52%
13 mph
5 PM 64%
12 mph
6 PM 65%
12 mph
7 PM 34%
9 mph
8 PM 45%
8 mph
9 PM 45%
8 mph
10 PM 63%
7 mph
11 PM 39%
7 mph
Key Factors
- 01 Heat Advisory in effect until 8:00 PM EDT with heat index values up to around 93–95°F, which can affect driver alertness and vehicle/passenger safety.
- 02 Showers and thunderstorms become possible after 1:00 PM EDT, with the highest storm risk around 5:00–7:00 PM and again around 10:00 PM.
- 03 Precipitation chances rise to 52–65% from 4:00–7:00 PM, with daily forecast indicating showers and thunderstorms likely and rainfall amounts up to a tenth to quarter inch possible.
- 04 Winds are moderate, generally 6–13 mph with gusts up to 23 mph, not a major hazard but could be noticeable in storms.
- 05 Visibility and road-surface condition details are not provided, so thunderstorm-related visibility reductions and wet roads are uncertain.
Confidence
82%
Recommendation
Morning safer driving window: 7:00–11:00 AM EDT, when conditions are sunny, winds are light to moderate, and precipitation chances are 2–4%. Evening safer driving window: 7:00–8:00 PM EDT is the least unfavorable evening slot, but storms remain possible; avoid 5:00–7:00 PM and 10:00–11:00 PM EDT when showers/thunderstorms are likely. Carry water, keep the vehicle cool, and do not drive through heavy rain or flooded roads.