claude-opus-5-5 Analysis · Jul 28, 2026
A Flood Watch is in effect from 8 AM today through Wednesday evening, with thunderstorm chances rising from about 25% at 10 AM to 60-85% from 2 PM through 11 PM. Heavy downpours of 1-3 inches per hour could cause flash flooding and hydroplaning, especially this evening and tonight.
- 01 Flood Watch (Severe) in effect from 8 AM today through Wednesday 8 PM, with rainfall rates of 1 to 3 inches per hour possible and 2 to 5 inches total expected.
- 02 Precipitation chances climb steadily: 19-39% from 9 AM to 1 PM, 49% at 1 PM, 60-71% from 2 PM to 6 PM, and peak at 78-85% from 6 PM to 10 PM.
- 03 The worst period is 6 PM to 11 PM, with 1 to 2 inches of new rain possible overnight and some storms producing heavy rain. Expect ponding, flooded low-lying roads and poor visibility in downpours.
- 04 Thunderstorms bring lightning and sudden heavy rain. Gusts up to 22 mph are modest but may be stronger locally in storms.
- 05 Early morning is the most favorable window: 7-9 AM is mostly cloudy with only 11-14% precipitation chance and light winds, though 97-100% humidity may mean patchy low visibility.
- 06 Visibility data is not provided, and the alert's listed end time (8 AM today) conflicts with its text (through Wednesday evening). The text-stated window was used.
Morning: drive between 7 AM and 10 AM, ideally before 9 AM, when rain chances are lowest (11-19%). Evening: there is no genuinely safe window. If you must travel, the least-bad time is after 10-11 PM, when chances ease to about 59-71%, but flooding from earlier storms may linger. Avoid 2 PM to 10 PM if possible, especially 6-10 PM. Never drive through flooded roads (turn around, don't drown), slow down and increase following distance in rain, and monitor for Flash Flood Warnings.