claude-opus-5 Analysis · Jul 21, 2026
Unsafe
HIGH RISK
claude-opus-5
85% confidence
Summary
A Flood Watch is in effect through late tonight with repeated showers and thunderstorms capable of torrential rain (2-3 inches per hour) and 1-2 inches of new rainfall. Flash flooding and hydroplaning are the main driving hazards, especially this afternoon and evening.
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 (Severe) issued 3:07AM EDT, flash flooding possible through late tonight July 22 at 2:00AM
- 02 Torrential rainfall rates of 2-3 inches per hour possible in stronger storms; 1-2 inches new rainfall day and again overnight
- 03 Precipitation probability climbs to 75-76% midday and 84-98% from 6pm-10pm, the worst period
- 04 Urban and poor-drainage roads prone to ponding and flooded underpasses
- 05 Thunderstorms bring sudden visibility loss and possible gusty downdrafts
- 06 Winds are light (5-12 mph), so crosswind risk is low; temperatures 68-82F mean no ice risk
- 07 No visibility values provided in the data, so fog/rain visibility impact is uncertain
Confidence
85%
Recommendation
Avoid non-essential driving today, especially 1pm-10pm when storms and flooding potential peak. If you must drive, the safest morning window is roughly 7:00-8:00am (only 19% precipitation chance), and the least-bad evening window is about 10:00-11:00pm as coverage eases to around 60-68%. Never drive through flooded roadways - turn around, don't drown - slow down for standing water, use headlights, and monitor for Flash Flood Warnings.