gpt-6-astra Analysis · Mar 21, 2026
Safe
MEDIUM RISK
gpt-6-astra
86% confidence
Summary
Driving on March 21 is generally safe after morning fog clears, but dense fog makes early travel hazardous until 8 AM EDT. Later conditions are mostly dry, above freezing, and accompanied by modest winds.
Hourly Forecast
7 AM 0%
8 mph
8 AM 0%
9 mph
9 AM 0%
12 mph
10 AM 0%
13 mph
11 AM 0%
12 mph
12 PM 0%
12 mph
1 PM 0%
10 mph
2 PM 0%
9 mph
3 PM 0%
8 mph
4 PM 0%
8 mph
5 PM 1%
7 mph
6 PM 1%
7 mph
7 PM 1%
5 mph
8 PM 1%
2 mph
9 PM 2%
3 mph
10 PM 2%
3 mph
11 PM 2%
5 mph
Key Factors
- 01 The Dense Fog Advisory warns of visibility as low as one-quarter mile until 8 AM EDT; this hazard takes precedence over the hourly mostly sunny forecast.
- 02 The alert's structured end timestamp conflicts with its text; the headline and description both specify an 8 AM EDT expiration.
- 03 Hourly precipitation chances are 0–2% through midnight, with temperatures of 45–58°F and no forecast frozen precipitation.
- 04 Winds are 8–13 mph during the morning and weaken to 2–7 mph in the evening.
- 05 Hourly visibility and wind gust data are missing, so fog clearance and any gust-related risk cannot be confirmed.
Confidence
86%
Recommendation
Avoid driving before 8 AM EDT while the fog advisory applies, and delay longer if visibility remains poor. Prefer 9–11 AM EDT for morning travel, provided fog has cleared, and 6–8 PM EDT for evening travel. If driving in fog is unavoidable, slow down, use low-beam headlights, and increase following distance.