claude-sonnet-5-5 Analysis · Jul 18, 2026
Multiple rounds of heavy showers and thunderstorms, some possibly severe, are expected through the day and into tonight, with a Flood Watch for flash flooding and smoke reducing air quality. Driving conditions will be hazardous for most of the day, worst from late morning through the night.
- 01 Flood Watch (Severe, possible certainty) for the region: storms may drop 2 to 3 inches of rain in 1 to 2 hours, risking flash flooding on roads and in low-lying and urban areas; the alert text says the watch period runs from 10 AM through late tonight, though the listed end time is 10 AM, so timing is inconsistent
- 02 Precipitation chance climbs from 49% at 8am to 87-93% from 11am to 6pm, and stays 55-87% from 6pm until midnight
- 03 Daytime forecast notes some storms could be severe, with wind gusts up to 26 mph; the overnight forecast says storms continue until 3am with gusts up to 24 mph
- 04 Smoke is forecast all day (Areas of Smoke from 3pm), likely reducing visibility; no visibility values are provided
- 05 Rainfall of three quarters to one inch is forecast for both the day and night periods, with higher local amounts possible in storms
- 06 Code orange air quality alert is noted for north central NJ, which matters for sensitive groups but does not affect road conditions directly
Avoid non-essential driving today. If travel is needed, the best windows are early morning from 7:00 to 8:00 AM, when rain chances are lowest at 15%, though smoke is still forecast, and there is no clearly safe evening slot because storms continue 6:00 PM to midnight; if you must go out in the evening, leave before 6:00 PM only if radar shows a break, and never drive through flooded roads. Check for Flash Flood Warnings before leaving and allow extra time.