claude-sonnet-4-6 Analysis · Jun 22, 2026
A Flood Watch is in effect from 2 PM through late tonight, with severe thunderstorms, heavy rain of 1–2 inches expected, and near-certain precipitation (up to 99%) throughout the evening and overnight. Conditions will deteriorate significantly as the day progresses, making driving increasingly dangerous.
- 01 Active Flood Watch issued by NWS from 2:00 PM EDT June 22 through late tonight (June 23 at 6:00 AM EDT), citing flash flooding risk from rainfall rates of 1–2 inches per hour.
- 02 Severe thunderstorms are possible throughout the day, with some storms capable of producing heavy rain, per the daily forecast.
- 03 Precipitation probability rises sharply through the day: 42% by 10 AM, 55% by 11 AM, 64% by 2 PM, 81% by 5 PM, and reaches 99% by 6 PM and again at 8 PM.
- 04 Evening hours (6 PM–midnight) carry near-certain precipitation (91–99%) with thunderstorms, making road flooding highly likely.
- 05 Expected total rainfall of 1–2 inches during the daytime period and another 1–2 inches overnight dramatically increases urban and poor-drainage area flood risk.
- 06 Wind gusts up to 25 mph during the day could reduce vehicle stability and visibility during heavy downpours.
- 07 Humidity climbs to 90–97% by evening, further reducing visibility and road traction.
If driving is absolutely necessary, the safest morning window is between 7:00 AM and 9:00 AM EDT, when precipitation probability is still relatively low (14–27%) and conditions have not yet deteriorated. For evening travel, there is no safe window today — precipitation probability remains at 86–99% from 6 PM through midnight with active thunderstorms and flash flood risk. Avoid all non-essential driving from 2:00 PM EDT onward, especially in low-lying, urban, or flood-prone areas. Monitor NWS for Flash Flood Warnings that may be upgraded from the current Watch.