Construction crew and excavators on a muddy site under heavy rain clouds

2022 Construction General Permit · California

Know before this happens.

QPE Assistant checks the NWS forecast for every one of your sites, every hour, and tells you and your inspectors when a Qualifying Precipitation Event is coming.

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One site free, no card. Featured during Stormwater Awareness Week 2025 and 2026.

Hourly

Every forecast, checked

We pull the 7-day NWS forecast for each site’s grid point every hour and apply the permit’s QPE thresholds.

72 h

Time to inspect

Turn on the pre-inspection window and every report highlights the 72 hours before a QPE, so crews know when to go.

Every

Update on record

Each hourly forecast is saved, so you can show what the forecast said and when.

The full walkthrough: the QPE rule, what to expect, common questions →